wine/gecko
0
0
Fork 0
mirror of https://gitlab.winehq.org/wine/wine-gecko.git synced 2024-09-13 09:24:08 -07:00
Code Issues Packages Projects Releases Wiki Activity
4a9dec68d7
gecko/editor/libeditor/base/nsEditor.cpp
Ehsan Akhgari 4a9dec68d7 Bug 414526 - Backspace at the beginning of a contenteditable element or delete at the end of one should not affect the rest of the contenteditable elements on the page; r=roc 
The main fix here involves the introduction of the nsHTMLEditor::IsNodeInActiveEditor
API.  This API returns true if the current selection in the document falls
inside the active editable section.  The patch adds a bunch of checks using
this API to various places in the code to make sure that editing operations do
not escape their editing host.

There are also some unrelated fixes to range promotion code which fix the
bugs that have existed in that code before, but because of the lack of this
check were not uncovered before.

This patch also removes the nsTextEditUtils::InBody API which only made sense
in designMode documents, and was insufficient for contenteditable elements.
2011-07-14 11:25:07 -04:00

5315 lines
157 KiB
C++
Raw Blame History

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is mozilla.org code.
*
* The Initial Developer of the Original Code is
* Netscape Communications Corporation.
* Portions created by the Initial Developer are Copyright (C) 1998
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Pierre Phaneuf <pp@ludusdesign.com>
* Daniel Glazman <glazman@netscape.com>
* Masayuki Nakano <masayuki@d-toybox.com>
* Mats Palmgren <matspal@gmail.com>
*
* Alternatively, the contents of this file may be used under the terms of
* either of the GNU General Public License Version 2 or later (the "GPL"),
* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#include "pratom.h"
#include "nsIDOMDocument.h"
#include "nsIDOMHTMLElement.h"
#include "nsIDOMNSHTMLElement.h"
#include "nsIDOMNSEvent.h"
#include "nsIMEStateManager.h"
#include "nsFocusManager.h"
#include "nsUnicharUtils.h"
#include "nsReadableUtils.h"
#include "nsIDOMText.h"
#include "nsIDOMElement.h"
#include "nsIDOMAttr.h"
#include "nsIDOMNode.h"
#include "nsIDOMDocumentFragment.h"
#include "nsIDOMNamedNodeMap.h"
#include "nsIDOMNodeList.h"
#include "nsIDOMRange.h"
#include "nsIDOMHTMLBRElement.h"
#include "nsIDocument.h"
#include "nsITransactionManager.h"
#include "nsIAbsorbingTransaction.h"
#include "nsIPresShell.h"
#include "nsISelection.h"
#include "nsISelectionPrivate.h"
#include "nsISelectionController.h"
#include "nsIEnumerator.h"
#include "nsEditProperty.h"
#include "nsIAtom.h"
#include "nsCaret.h"
#include "nsIWidget.h"
#include "nsIPlaintextEditor.h"
#include "nsIPrivateDOMEvent.h"
#include "nsGUIEvent.h"
#include "nsIFrame.h" // Needed by IME code
#include "nsCSSStyleSheet.h"
#include "nsIContent.h"
#include "nsServiceManagerUtils.h"
// transactions the editor knows how to build
#include "EditAggregateTxn.h"
#include "PlaceholderTxn.h"
#include "ChangeAttributeTxn.h"
#include "CreateElementTxn.h"
#include "InsertElementTxn.h"
#include "DeleteElementTxn.h"
#include "InsertTextTxn.h"
#include "DeleteTextTxn.h"
#include "DeleteRangeTxn.h"
#include "SplitElementTxn.h"
#include "JoinElementTxn.h"
#include "nsStyleSheetTxns.h"
#include "IMETextTxn.h"
#include "nsString.h"
#include "nsEditor.h"
#include "nsEditorUtils.h"
#include "nsEditorEventListener.h"
#include "nsISelectionDisplay.h"
#include "nsIInlineSpellChecker.h"
#include "nsINameSpaceManager.h"
#include "nsIHTMLDocument.h"
#include "nsIParserService.h"
#include "nsITransferable.h"
#include "nsComputedDOMStyle.h"
#include "nsTextEditUtils.h"
#include "mozilla/FunctionTimer.h"
#include "mozilla/Preferences.h"
#define NS_ERROR_EDITOR_NO_SELECTION NS_ERROR_GENERATE_FAILURE(NS_ERROR_MODULE_EDITOR,1)
#define NS_ERROR_EDITOR_NO_TEXTNODE NS_ERROR_GENERATE_FAILURE(NS_ERROR_MODULE_EDITOR,2)
#ifdef NS_DEBUG_EDITOR
static PRBool gNoisy = PR_FALSE;
#endif
#ifdef DEBUG
#include "nsIDOMHTMLDocument.h"
#endif
using namespace mozilla;
// Defined in nsEditorRegistration.cpp
extern nsIParserService *sParserService;
//---------------------------------------------------------------------------
//
// nsEditor: base editor class implementation
//
//---------------------------------------------------------------------------
nsEditor::nsEditor()
: mModCount(0)
, mFlags(0)
, mUpdateCount(0)
, mSpellcheckCheckboxState(eTriUnset)
, mPlaceHolderTxn(nsnull)
, mPlaceHolderName(nsnull)
, mPlaceHolderBatch(0)
, mSelState(nsnull)
, mSavedSel()
, mRangeUpdater()
, mAction(nsnull)
, mDirection(eNone)
, mIMETextNode(nsnull)
, mIMETextOffset(0)
, mIMEBufferLength(0)
, mInIMEMode(PR_FALSE)
, mIsIMEComposing(PR_FALSE)
, mShouldTxnSetSelection(PR_TRUE)
, mDidPreDestroy(PR_FALSE)
, mDidPostCreate(PR_FALSE)
, mDocDirtyState(-1)
, mDocWeak(nsnull)
, mPhonetic(nsnull)
, mLastKeypressEventWasTrusted(eTriUnset)
{
//initialize member variables here
}
nsEditor::~nsEditor()
{
NS_ASSERTION(!mDocWeak || mDidPreDestroy, "Why PreDestroy hasn't been called?");
mTxnMgr = nsnull;
delete mPhonetic;
}
NS_IMPL_CYCLE_COLLECTION_CLASS(nsEditor)
NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN(nsEditor)
NS_IMPL_CYCLE_COLLECTION_UNLINK_NSCOMPTR(mRootElement)
NS_IMPL_CYCLE_COLLECTION_UNLINK_NSCOMPTR(mInlineSpellChecker)
NS_IMPL_CYCLE_COLLECTION_UNLINK_NSCOMPTR(mTxnMgr)
NS_IMPL_CYCLE_COLLECTION_UNLINK_NSCOMPTR(mIMETextRangeList)
NS_IMPL_CYCLE_COLLECTION_UNLINK_NSCOMPTR(mIMETextNode)
NS_IMPL_CYCLE_COLLECTION_UNLINK_NSCOMARRAY(mActionListeners)
NS_IMPL_CYCLE_COLLECTION_UNLINK_NSCOMARRAY(mEditorObservers)
NS_IMPL_CYCLE_COLLECTION_UNLINK_NSCOMARRAY(mDocStateListeners)
NS_IMPL_CYCLE_COLLECTION_UNLINK_NSCOMPTR(mEventTarget)
NS_IMPL_CYCLE_COLLECTION_UNLINK_NSCOMPTR(mEventListener)
NS_IMPL_CYCLE_COLLECTION_UNLINK_END
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(nsEditor)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_NSCOMPTR(mRootElement)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_NSCOMPTR(mInlineSpellChecker)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_NSCOMPTR(mTxnMgr)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_NSCOMPTR(mIMETextRangeList)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_NSCOMPTR(mIMETextNode)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_NSCOMARRAY(mActionListeners)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_NSCOMARRAY(mEditorObservers)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_NSCOMARRAY(mDocStateListeners)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_NSCOMPTR(mEventTarget)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_NSCOMPTR(mEventListener)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(nsEditor)
NS_INTERFACE_MAP_ENTRY(nsIPhonetic)
NS_INTERFACE_MAP_ENTRY(nsISupportsWeakReference)
NS_INTERFACE_MAP_ENTRY(nsIEditorIMESupport)
NS_INTERFACE_MAP_ENTRY(nsIEditor)
NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsIEditor)
NS_INTERFACE_MAP_END
NS_IMPL_CYCLE_COLLECTING_ADDREF(nsEditor)
NS_IMPL_CYCLE_COLLECTING_RELEASE(nsEditor)
NS_IMETHODIMP
nsEditor::Init(nsIDOMDocument *aDoc, nsIContent *aRoot, nsISelectionController *aSelCon, PRUint32 aFlags)
{
NS_PRECONDITION(aDoc, "bad arg");
if (!aDoc)
return NS_ERROR_NULL_POINTER;
// First only set flags, but other stuff shouldn't be initialized now.
// Don't move this call after initializing mDocWeak.
// SetFlags() can check whether it's called during initialization or not by
// them. Note that SetFlags() will be called by PostCreate().
#ifdef DEBUG
nsresult rv =
#endif
SetFlags(aFlags);
NS_ASSERTION(NS_SUCCEEDED(rv), "SetFlags() failed");
mDocWeak = do_GetWeakReference(aDoc); // weak reference to doc
// HTML editors currently don't have their own selection controller,
// so they'll pass null as aSelCon, and we'll get the selection controller
// off of the presshell.
nsCOMPtr<nsISelectionController> selCon;
if (aSelCon) {
mSelConWeak = do_GetWeakReference(aSelCon); // weak reference to selectioncontroller
selCon = aSelCon;
} else {
nsCOMPtr<nsIPresShell> presShell = GetPresShell();
selCon = do_QueryInterface(presShell);
}
NS_ASSERTION(selCon, "Selection controller should be available at this point");
//set up root element if we are passed one.
if (aRoot)
mRootElement = do_QueryInterface(aRoot);
mUpdateCount=0;
/* initialize IME stuff */
mIMETextNode = nsnull;
mIMETextOffset = 0;
mIMEBufferLength = 0;
/* Show the caret */
selCon->SetCaretReadOnly(PR_FALSE);
selCon->SetDisplaySelection(nsISelectionController::SELECTION_ON);
selCon->SetSelectionFlags(nsISelectionDisplay::DISPLAY_ALL);//we want to see all the selection reflected to user
NS_POSTCONDITION(mDocWeak, "bad state");
// Make sure that the editor will be destroyed properly
mDidPreDestroy = PR_FALSE;
// Make sure that the ediotr will be created properly
mDidPostCreate = PR_FALSE;
return NS_OK;
}
NS_IMETHODIMP
nsEditor::PostCreate()
{
// Synchronize some stuff for the flags. SetFlags() will initialize
// something by the flag difference. This is first time of that, so, all
// initializations must be run. For such reason, we need to invert mFlags
// value first.
mFlags = ~mFlags;
nsresult rv = SetFlags(~mFlags);
NS_ENSURE_SUCCESS(rv, rv);
// These operations only need to happen on the first PostCreate call
if (!mDidPostCreate) {
mDidPostCreate = PR_TRUE;
// Set up listeners
CreateEventListeners();
rv = InstallEventListeners();
NS_ENSURE_SUCCESS(rv, rv);
// nuke the modification count, so the doc appears unmodified
// do this before we notify listeners
ResetModificationCount();
// update the UI with our state
NotifyDocumentListeners(eDocumentCreated);
NotifyDocumentListeners(eDocumentStateChanged);
}
// update nsTextStateManager and caret if we have focus
nsCOMPtr<nsIContent> focusedContent = GetFocusedContent();
if (focusedContent) {
nsCOMPtr<nsIPresShell> ps = GetPresShell();
NS_ASSERTION(ps, "no pres shell even though we have focus");
NS_ENSURE_TRUE(ps, NS_ERROR_UNEXPECTED);
nsPresContext* pc = ps->GetPresContext();
nsIMEStateManager::OnTextStateBlur(pc, nsnull);
nsIMEStateManager::OnTextStateFocus(pc, focusedContent);
nsCOMPtr<nsIDOMEventTarget> target = do_QueryInterface(focusedContent);
if (target) {
InitializeSelection(target);
}
}
return NS_OK;
}
/* virtual */
void
nsEditor::CreateEventListeners()
{
// Don't create the handler twice
if (!mEventListener) {
mEventListener = new nsEditorEventListener();
}
}
nsresult
nsEditor::InstallEventListeners()
{
NS_ENSURE_TRUE(mDocWeak && mEventListener,
NS_ERROR_NOT_INITIALIZED);
// Initialize the event target.
nsCOMPtr<nsIContent> rootContent = do_QueryInterface(GetRoot());
NS_ENSURE_TRUE(rootContent, NS_ERROR_NOT_AVAILABLE);
mEventTarget = do_QueryInterface(rootContent->GetParent());
NS_ENSURE_TRUE(mEventTarget, NS_ERROR_NOT_AVAILABLE);
nsEditorEventListener* listener =
reinterpret_cast<nsEditorEventListener*>(mEventListener.get());
return listener->Connect(this);
}
void
nsEditor::RemoveEventListeners()
{
if (!mDocWeak || !mEventListener) {
return;
}
reinterpret_cast<nsEditorEventListener*>(mEventListener.get())->Disconnect();
mEventTarget = nsnull;
}
PRBool
nsEditor::GetDesiredSpellCheckState()
{
// Check user override on this element
if (mSpellcheckCheckboxState != eTriUnset) {
return (mSpellcheckCheckboxState == eTriTrue);
}
// Check user preferences
PRInt32 spellcheckLevel = Preferences::GetInt("layout.spellcheckDefault", 1);
if (spellcheckLevel == 0) {
return PR_FALSE; // Spellchecking forced off globally
}
if (!CanEnableSpellCheck()) {
return PR_FALSE;
}
nsCOMPtr<nsIPresShell> presShell = GetPresShell();
if (presShell) {
nsPresContext* context = presShell->GetPresContext();
if (context && !context->IsDynamic()) {
return PR_FALSE;
}
}
// Check DOM state
nsCOMPtr<nsIContent> content = do_QueryInterface(GetRoot());
if (!content) {
return PR_FALSE;
}
if (content->IsRootOfNativeAnonymousSubtree()) {
content = content->GetParent();
}
nsCOMPtr<nsIDOMNSHTMLElement> element = do_QueryInterface(content);
if (!element) {
return PR_FALSE;
}
PRBool enable;
element->GetSpellcheck(&enable);
return enable;
}
NS_IMETHODIMP
nsEditor::PreDestroy(PRBool aDestroyingFrames)
{
if (mDidPreDestroy)
return NS_OK;
// Let spellchecker clean up its observers etc. It is important not to
// actually free the spellchecker here, since the spellchecker could have
// caused flush notifications, which could have gotten here if a textbox
// is being removed. Setting the spellchecker to NULL could free the
// object that is still in use! It will be freed when the editor is
// destroyed.
if (mInlineSpellChecker)
mInlineSpellChecker->Cleanup(aDestroyingFrames);
// tell our listeners that the doc is going away
NotifyDocumentListeners(eDocumentToBeDestroyed);
// Unregister event listeners
RemoveEventListeners();
mActionListeners.Clear();
mEditorObservers.Clear();
mDocStateListeners.Clear();
mInlineSpellChecker = nsnull;
mSpellcheckCheckboxState = eTriUnset;
mRootElement = nsnull;
mDidPreDestroy = PR_TRUE;
return NS_OK;
}
NS_IMETHODIMP
nsEditor::GetFlags(PRUint32 *aFlags)
{
*aFlags = mFlags;
return NS_OK;
}
NS_IMETHODIMP
nsEditor::SetFlags(PRUint32 aFlags)
{
if (mFlags == aFlags) {
return NS_OK;
}
PRBool spellcheckerWasEnabled = CanEnableSpellCheck();
mFlags = aFlags;
if (!mDocWeak) {
// If we're initializing, we shouldn't do anything now.
// SetFlags() will be called by PostCreate(),
// we should synchronize some stuff for the flags at that time.
return NS_OK;
}
// The flag change may cause the spellchecker state change
if (CanEnableSpellCheck() != spellcheckerWasEnabled) {
nsresult rv = SyncRealTimeSpell();
NS_ENSURE_SUCCESS(rv, rv);
}
// Might be changing editable state, so, we need to reset current IME state
// if we're focused and the flag change causes IME state change.
nsCOMPtr<nsIContent> focusedContent = GetFocusedContent();
if (focusedContent) {
// Use "enable" for the default value because if IME is disabled
// unexpectedly, it makes serious a11y problem.
PRUint32 newState = nsIContent::IME_STATUS_ENABLE;
nsresult rv = GetPreferredIMEState(&newState);
if (NS_SUCCEEDED(rv)) {
// NOTE: When the enabled state isn't going to be modified, this method
// is going to do nothing.
nsIMEStateManager::UpdateIMEState(newState, focusedContent);
}
}
return NS_OK;
}
NS_IMETHODIMP
nsEditor::GetIsDocumentEditable(PRBool *aIsDocumentEditable)
{
NS_ENSURE_ARG_POINTER(aIsDocumentEditable);
nsCOMPtr<nsIDOMDocument> doc;
GetDocument(getter_AddRefs(doc));
*aIsDocumentEditable = doc ? PR_TRUE : PR_FALSE;
return NS_OK;
}
NS_IMETHODIMP
nsEditor::GetDocument(nsIDOMDocument **aDoc)
{
NS_ENSURE_TRUE(aDoc, NS_ERROR_NULL_POINTER);
*aDoc = nsnull; // init out param
NS_PRECONDITION(mDocWeak, "bad state, mDocWeak weak pointer not initialized");
nsCOMPtr<nsIDOMDocument> doc = do_QueryReferent(mDocWeak);
NS_ENSURE_TRUE(doc, NS_ERROR_NOT_INITIALIZED);
NS_ADDREF(*aDoc = doc);
return NS_OK;
}
already_AddRefed<nsIPresShell>
nsEditor::GetPresShell()
{
NS_PRECONDITION(mDocWeak, "bad state, null mDocWeak");
nsCOMPtr<nsIDocument> doc = do_QueryReferent(mDocWeak);
NS_ENSURE_TRUE(doc, NULL);
nsCOMPtr<nsIPresShell> ps = doc->GetShell();
return ps.forget();
}
/* attribute string contentsMIMEType; */
NS_IMETHODIMP
nsEditor::GetContentsMIMEType(char * *aContentsMIMEType)
{
NS_ENSURE_ARG_POINTER(aContentsMIMEType);
*aContentsMIMEType = ToNewCString(mContentMIMEType);
return NS_OK;
}
NS_IMETHODIMP
nsEditor::SetContentsMIMEType(const char * aContentsMIMEType)
{
mContentMIMEType.Assign(aContentsMIMEType ? aContentsMIMEType : "");
return NS_OK;
}
NS_IMETHODIMP
nsEditor::GetSelectionController(nsISelectionController **aSel)
{
NS_ENSURE_TRUE(aSel, NS_ERROR_NULL_POINTER);
*aSel = nsnull; // init out param
nsCOMPtr<nsISelectionController> selCon;
if (mSelConWeak) {
selCon = do_QueryReferent(mSelConWeak);
} else {
nsCOMPtr<nsIPresShell> presShell = GetPresShell();
selCon = do_QueryInterface(presShell);
}
NS_ENSURE_TRUE(selCon, NS_ERROR_NOT_INITIALIZED);
NS_ADDREF(*aSel = selCon);
return NS_OK;
}
NS_IMETHODIMP
nsEditor::DeleteSelection(EDirection aAction)
{
return DeleteSelectionImpl(aAction);
}
NS_IMETHODIMP
nsEditor::GetSelection(nsISelection **aSelection)
{
NS_ENSURE_TRUE(aSelection, NS_ERROR_NULL_POINTER);
*aSelection = nsnull;
nsCOMPtr<nsISelectionController> selcon;
GetSelectionController(getter_AddRefs(selcon));
NS_ENSURE_TRUE(selcon, NS_ERROR_NOT_INITIALIZED);
return selcon->GetSelection(nsISelectionController::SELECTION_NORMAL, aSelection); // does an addref
}
NS_IMETHODIMP
nsEditor::DoTransaction(nsITransaction *aTxn)
{
#ifdef NS_DEBUG_EDITOR
if (gNoisy) { printf("Editor::DoTransaction ----------\n"); }
#endif
nsresult result = NS_OK;
if (mPlaceHolderBatch && !mPlaceHolderTxn)
{
// it's pretty darn amazing how many different types of pointers
// this transaction goes through here. I bet this is a record.
// We start off with an EditTxn since that's what the factory returns.
nsRefPtr<EditTxn> editTxn = new PlaceholderTxn();
if (!editTxn) { return NS_ERROR_OUT_OF_MEMORY; }
// Then we QI to an nsIAbsorbingTransaction to get at placeholder functionality
nsCOMPtr<nsIAbsorbingTransaction> plcTxn;
editTxn->QueryInterface(NS_GET_IID(nsIAbsorbingTransaction), getter_AddRefs(plcTxn));
// have to use line above instead of "plcTxn = do_QueryInterface(editTxn);"
// due to our broken interface model for transactions.
// save off weak reference to placeholder txn
mPlaceHolderTxn = do_GetWeakReference(plcTxn);
plcTxn->Init(mPlaceHolderName, mSelState, this);
mSelState = nsnull; // placeholder txn took ownership of this pointer
// finally we QI to an nsITransaction since that's what DoTransaction() expects
nsCOMPtr<nsITransaction> theTxn = do_QueryInterface(plcTxn);
DoTransaction(theTxn); // we will recurse, but will not hit this case in the nested call
if (mTxnMgr)
{
nsCOMPtr<nsITransaction> topTxn;
result = mTxnMgr->PeekUndoStack(getter_AddRefs(topTxn));
NS_ENSURE_SUCCESS(result, result);
if (topTxn)
{
plcTxn = do_QueryInterface(topTxn);
if (plcTxn)
{
// there is a palceholder transaction on top of the undo stack. It is
// either the one we just created, or an earlier one that we are now merging
// into. From here on out remember this placeholder instead of the one
// we just created.
mPlaceHolderTxn = do_GetWeakReference(plcTxn);
}
}
}
}
if (aTxn)
{
// XXX: Why are we doing selection specific batching stuff here?
// XXX: Most entry points into the editor have auto variables that
// XXX: should trigger Begin/EndUpdateViewBatch() calls that will make
// XXX: these selection batch calls no-ops.
// XXX:
// XXX: I suspect that this was placed here to avoid multiple
// XXX: selection changed notifications from happening until after
// XXX: the transaction was done. I suppose that can still happen
// XXX: if an embedding application called DoTransaction() directly
// XXX: to pump its own transactions through the system, but in that
// XXX: case, wouldn't we want to use Begin/EndUpdateViewBatch() or
// XXX: its auto equivalent nsAutoUpdateViewBatch to ensure that
// XXX: selection listeners have access to accurate frame data?
// XXX:
// XXX: Note that if we did add Begin/EndUpdateViewBatch() calls
// XXX: we will need to make sure that they are disabled during
// XXX: the init of the editor for text widgets to avoid layout
// XXX: re-entry during initial reflow. - kin
// get the selection and start a batch change
nsCOMPtr<nsISelection>selection;
result = GetSelection(getter_AddRefs(selection));
NS_ENSURE_SUCCESS(result, result);
NS_ENSURE_TRUE(selection, NS_ERROR_NULL_POINTER);
nsCOMPtr<nsISelectionPrivate>selPrivate(do_QueryInterface(selection));
selPrivate->StartBatchChanges();
if (mTxnMgr) {
result = mTxnMgr->DoTransaction(aTxn);
}
else {
result = aTxn->DoTransaction();
}
if (NS_SUCCEEDED(result)) {
result = DoAfterDoTransaction(aTxn);
}
selPrivate->EndBatchChanges(); // no need to check result here, don't lose result of operation
}
NS_ENSURE_SUCCESS(result, result);
return result;
}
NS_IMETHODIMP
nsEditor::EnableUndo(PRBool aEnable)
{
nsresult result=NS_OK;
if (PR_TRUE==aEnable)
{
if (!mTxnMgr)
{
mTxnMgr = do_CreateInstance(NS_TRANSACTIONMANAGER_CONTRACTID, &result);
if (NS_FAILED(result) || !mTxnMgr) {
return NS_ERROR_NOT_AVAILABLE;
}
}
mTxnMgr->SetMaxTransactionCount(-1);
}
else
{ // disable the transaction manager if it is enabled
if (mTxnMgr)
{
mTxnMgr->Clear();
mTxnMgr->SetMaxTransactionCount(0);
}
}
return NS_OK;
}
NS_IMETHODIMP
nsEditor::GetTransactionManager(nsITransactionManager* *aTxnManager)
{
NS_ENSURE_ARG_POINTER(aTxnManager);
*aTxnManager = NULL;
NS_ENSURE_TRUE(mTxnMgr, NS_ERROR_FAILURE);
NS_ADDREF(*aTxnManager = mTxnMgr);
return NS_OK;
}
NS_IMETHODIMP
nsEditor::SetTransactionManager(nsITransactionManager *aTxnManager)
{
NS_ENSURE_TRUE(aTxnManager, NS_ERROR_FAILURE);
mTxnMgr = aTxnManager;
return NS_OK;
}
NS_IMETHODIMP
nsEditor::Undo(PRUint32 aCount)
{
#ifdef NS_DEBUG_EDITOR
if (gNoisy) { printf("Editor::Undo ----------\n"); }
#endif
nsresult result = NS_OK;
ForceCompositionEnd();
PRBool hasTxnMgr, hasTransaction = PR_FALSE;
CanUndo(&hasTxnMgr, &hasTransaction);
NS_ENSURE_TRUE(hasTransaction, result);
nsAutoRules beginRulesSniffing(this, kOpUndo, nsIEditor::eNone);
if ((nsITransactionManager *)nsnull!=mTxnMgr.get())
{
PRUint32 i=0;
for ( ; i<aCount; i++)
{
result = mTxnMgr->UndoTransaction();
if (NS_SUCCEEDED(result))
result = DoAfterUndoTransaction();
if (NS_FAILED(result))
break;
}
}
NotifyEditorObservers();
return result;
}
NS_IMETHODIMP nsEditor::CanUndo(PRBool *aIsEnabled, PRBool *aCanUndo)
{
NS_ENSURE_TRUE(aIsEnabled && aCanUndo, NS_ERROR_NULL_POINTER);
*aIsEnabled = ((PRBool)((nsITransactionManager *)0!=mTxnMgr.get()));
if (*aIsEnabled)
{
PRInt32 numTxns=0;
mTxnMgr->GetNumberOfUndoItems(&numTxns);
*aCanUndo = ((PRBool)(0!=numTxns));
}
else {
*aCanUndo = PR_FALSE;
}
return NS_OK;
}
NS_IMETHODIMP
nsEditor::Redo(PRUint32 aCount)
{
#ifdef NS_DEBUG_EDITOR
if (gNoisy) { printf("Editor::Redo ----------\n"); }
#endif
nsresult result = NS_OK;
PRBool hasTxnMgr, hasTransaction = PR_FALSE;
CanRedo(&hasTxnMgr, &hasTransaction);
NS_ENSURE_TRUE(hasTransaction, result);
nsAutoRules beginRulesSniffing(this, kOpRedo, nsIEditor::eNone);
if ((nsITransactionManager *)nsnull!=mTxnMgr.get())
{
PRUint32 i=0;
for ( ; i<aCount; i++)
{
result = mTxnMgr->RedoTransaction();
if (NS_SUCCEEDED(result))
result = DoAfterRedoTransaction();
if (NS_FAILED(result))
break;
}
}
NotifyEditorObservers();
return result;
}
NS_IMETHODIMP nsEditor::CanRedo(PRBool *aIsEnabled, PRBool *aCanRedo)
{
NS_ENSURE_TRUE(aIsEnabled && aCanRedo, NS_ERROR_NULL_POINTER);
*aIsEnabled = ((PRBool)((nsITransactionManager *)0!=mTxnMgr.get()));
if (*aIsEnabled)
{
PRInt32 numTxns=0;
mTxnMgr->GetNumberOfRedoItems(&numTxns);
*aCanRedo = ((PRBool)(0!=numTxns));
}
else {
*aCanRedo = PR_FALSE;
}
return NS_OK;
}
NS_IMETHODIMP
nsEditor::BeginTransaction()
{
BeginUpdateViewBatch();
if ((nsITransactionManager *)nsnull!=mTxnMgr.get())
{
mTxnMgr->BeginBatch();
}
return NS_OK;
}
NS_IMETHODIMP
nsEditor::EndTransaction()
{
if ((nsITransactionManager *)nsnull!=mTxnMgr.get())
{
mTxnMgr->EndBatch();
}
EndUpdateViewBatch();
return NS_OK;
}
// These two routines are similar to the above, but do not use
// the transaction managers batching feature. Instead we use
// a placeholder transaction to wrap up any further transaction
// while the batch is open. The advantage of this is that
// placeholder transactions can later merge, if needed. Merging
// is unavailable between transaction manager batches.
NS_IMETHODIMP
nsEditor::BeginPlaceHolderTransaction(nsIAtom *aName)
{
NS_PRECONDITION(mPlaceHolderBatch >= 0, "negative placeholder batch count!");
if (!mPlaceHolderBatch)
{
// time to turn on the batch
BeginUpdateViewBatch();
mPlaceHolderTxn = nsnull;
mPlaceHolderName = aName;
nsCOMPtr<nsISelection> selection;
nsresult res = GetSelection(getter_AddRefs(selection));
if (NS_SUCCEEDED(res)) {
mSelState = new nsSelectionState();
if (mSelState) {
mSelState->SaveSelection(selection);
}
}
}
mPlaceHolderBatch++;
return NS_OK;
}
NS_IMETHODIMP
nsEditor::EndPlaceHolderTransaction()
{
NS_PRECONDITION(mPlaceHolderBatch > 0, "zero or negative placeholder batch count when ending batch!");
if (mPlaceHolderBatch == 1)
{
nsCOMPtr<nsISelection>selection;
GetSelection(getter_AddRefs(selection));
nsCOMPtr<nsISelectionPrivate>selPrivate(do_QueryInterface(selection));
// By making the assumption that no reflow happens during the calls
// to EndUpdateViewBatch and ScrollSelectionIntoView, we are able to
// allow the selection to cache a frame offset which is used by the
// caret drawing code. We only enable this cache here; at other times,
// we have no way to know whether reflow invalidates it
// See bugs 35296 and 199412.
if (selPrivate) {
selPrivate->SetCanCacheFrameOffset(PR_TRUE);
}
{
// Hide the caret here to avoid hiding it twice, once in EndUpdateViewBatch
// and once in ScrollSelectionIntoView.
nsRefPtr<nsCaret> caret;
nsCOMPtr<nsIPresShell> presShell = GetPresShell();
if (presShell)
caret = presShell->GetCaret();
StCaretHider caretHider(caret);
// time to turn off the batch
EndUpdateViewBatch();
// make sure selection is in view
// After ScrollSelectionIntoView(), the pending notifications might be
// flushed and PresShell/PresContext/Frames may be dead. See bug 418470.
ScrollSelectionIntoView(PR_FALSE);
}
// cached for frame offset are Not available now
if (selPrivate) {
selPrivate->SetCanCacheFrameOffset(PR_FALSE);
}
if (mSelState)
{
// we saved the selection state, but never got to hand it to placeholder
// (else we ould have nulled out this pointer), so destroy it to prevent leaks.
delete mSelState;
mSelState = nsnull;
}
if (mPlaceHolderTxn) // we might have never made a placeholder if no action took place
{
nsCOMPtr<nsIAbsorbingTransaction> plcTxn = do_QueryReferent(mPlaceHolderTxn);
if (plcTxn)
{
plcTxn->EndPlaceHolderBatch();
}
else
{
// in the future we will check to make sure undo is off here,
// since that is the only known case where the placeholdertxn would disappear on us.
// For now just removing the assert.
}
// notify editor observers of action unless it is uncommitted IME
if (!mInIMEMode) NotifyEditorObservers();
}
}
mPlaceHolderBatch--;
return NS_OK;
}
NS_IMETHODIMP
nsEditor::ShouldTxnSetSelection(PRBool *aResult)
{
NS_ENSURE_TRUE(aResult, NS_ERROR_NULL_POINTER);
*aResult = mShouldTxnSetSelection;
return NS_OK;
}
NS_IMETHODIMP
nsEditor::SetShouldTxnSetSelection(PRBool aShould)
{
mShouldTxnSetSelection = aShould;
return NS_OK;
}
NS_IMETHODIMP
nsEditor::GetDocumentIsEmpty(PRBool *aDocumentIsEmpty)
{
*aDocumentIsEmpty = PR_TRUE;
nsIDOMElement *rootElement = GetRoot();
NS_ENSURE_TRUE(rootElement, NS_ERROR_NULL_POINTER);
PRBool hasChildNodes;
nsresult res = rootElement->HasChildNodes(&hasChildNodes);
*aDocumentIsEmpty = !hasChildNodes;
return res;
}
// XXX: the rule system should tell us which node to select all on (ie, the root, or the body)
NS_IMETHODIMP nsEditor::SelectAll()
{
if (!mDocWeak) { return NS_ERROR_NOT_INITIALIZED; }
ForceCompositionEnd();
nsCOMPtr<nsISelectionController> selCon;
GetSelectionController(getter_AddRefs(selCon));
NS_ENSURE_TRUE(selCon, NS_ERROR_NOT_INITIALIZED);
nsCOMPtr<nsISelection> selection;
nsresult result = selCon->GetSelection(nsISelectionController::SELECTION_NORMAL, getter_AddRefs(selection));
if (NS_SUCCEEDED(result) && selection)
{
result = SelectEntireDocument(selection);
}
return result;
}
NS_IMETHODIMP nsEditor::BeginningOfDocument()
{
if (!mDocWeak) { return NS_ERROR_NOT_INITIALIZED; }
// get the selection
nsCOMPtr<nsISelection> selection;
nsresult result = GetSelection(getter_AddRefs(selection));
NS_ENSURE_SUCCESS(result, result);
NS_ENSURE_TRUE(selection, NS_ERROR_NOT_INITIALIZED);
// get the root element
nsIDOMElement *rootElement = GetRoot();
NS_ENSURE_TRUE(rootElement, NS_ERROR_NULL_POINTER);
// find first editable thingy
nsCOMPtr<nsIDOMNode> firstNode;
result = GetFirstEditableNode(rootElement, address_of(firstNode));
if (firstNode)
{
// if firstNode is text, set selection to beginning of the text node
if (IsTextNode(firstNode))
{
result = selection->Collapse(firstNode, 0);
}
else
{ // otherwise, it's a leaf node and we set the selection just in front of it
nsCOMPtr<nsIDOMNode> parentNode;
result = firstNode->GetParentNode(getter_AddRefs(parentNode));
if (NS_FAILED(result)) { return result; }
if (!parentNode) { return NS_ERROR_NULL_POINTER; }
PRInt32 offsetInParent;
result = nsEditor::GetChildOffset(firstNode, parentNode, offsetInParent);
NS_ENSURE_SUCCESS(result, result);
result = selection->Collapse(parentNode, offsetInParent);
}
}
else
{
// just the root node, set selection to inside the root
result = selection->Collapse(rootElement, 0);
}
return result;
}
NS_IMETHODIMP
nsEditor::EndOfDocument()
{
if (!mDocWeak) { return NS_ERROR_NOT_INITIALIZED; }
nsresult res;
// get selection
nsCOMPtr<nsISelection> selection;
res = GetSelection(getter_AddRefs(selection));
NS_ENSURE_SUCCESS(res, res);
NS_ENSURE_TRUE(selection, NS_ERROR_NULL_POINTER);
// get the root element
nsIDOMElement *rootElement = GetRoot();
NS_ENSURE_TRUE(rootElement, NS_ERROR_NULL_POINTER);
nsCOMPtr<nsIDOMNode> node = do_QueryInterface(rootElement);
nsCOMPtr<nsIDOMNode> child;
NS_ASSERTION(node, "Invalid root element");
do {
node->GetLastChild(getter_AddRefs(child));
if (child) {
if (IsContainer(child)) {
node = child;
} else {
break;
}
}
} while (child);
PRUint32 length = 0;
res = GetLengthOfDOMNode(node, length);
NS_ENSURE_SUCCESS(res, res);
return selection->Collapse(node, (PRInt32)length);
}
NS_IMETHODIMP
nsEditor::GetDocumentModified(PRBool *outDocModified)
{
NS_ENSURE_TRUE(outDocModified, NS_ERROR_NULL_POINTER);
PRInt32 modCount = 0;
GetModificationCount(&modCount);
*outDocModified = (modCount != 0);
return NS_OK;
}
NS_IMETHODIMP
nsEditor::GetDocumentCharacterSet(nsACString &characterSet)
{
nsCOMPtr<nsIDocument> doc = do_QueryReferent(mDocWeak);
NS_ENSURE_TRUE(doc, NS_ERROR_UNEXPECTED);
characterSet = doc->GetDocumentCharacterSet();
return NS_OK;
}
NS_IMETHODIMP
nsEditor::SetDocumentCharacterSet(const nsACString& characterSet)
{
nsCOMPtr<nsIDocument> doc = do_QueryReferent(mDocWeak);
NS_ENSURE_TRUE(doc, NS_ERROR_UNEXPECTED);
doc->SetDocumentCharacterSet(characterSet);
return NS_OK;
}
NS_IMETHODIMP
nsEditor::Cut()
{
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP
nsEditor::CanCut(PRBool *aCanCut)
{
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP
nsEditor::Copy()
{
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP
nsEditor::CanCopy(PRBool *aCanCut)
{
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP
nsEditor::Paste(PRInt32 aSelectionType)
{
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP
nsEditor::PasteTransferable(nsITransferable *aTransferable)
{
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP
nsEditor::CanPaste(PRInt32 aSelectionType, PRBool *aCanPaste)
{
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP
nsEditor::CanPasteTransferable(nsITransferable *aTransferable, PRBool *aCanPaste)
{
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP
nsEditor::CanDrag(nsIDOMEvent *aEvent, PRBool *aCanDrag)
{
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP
nsEditor::DoDrag(nsIDOMEvent *aEvent)
{
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP
nsEditor::InsertFromDrop(nsIDOMEvent *aEvent)
{
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP
nsEditor::SetAttribute(nsIDOMElement *aElement, const nsAString & aAttribute, const nsAString & aValue)
{
nsRefPtr<ChangeAttributeTxn> txn;
nsresult result = CreateTxnForSetAttribute(aElement, aAttribute, aValue,
getter_AddRefs(txn));
if (NS_SUCCEEDED(result)) {
result = DoTransaction(txn);
}
return result;
}
NS_IMETHODIMP
nsEditor::GetAttributeValue(nsIDOMElement *aElement,
const nsAString & aAttribute,
nsAString & aResultValue,
PRBool *aResultIsSet)
{
NS_ENSURE_TRUE(aResultIsSet, NS_ERROR_NULL_POINTER);
*aResultIsSet=PR_FALSE;
nsresult result=NS_OK;
if (aElement)
{
nsCOMPtr<nsIDOMAttr> attNode;
result = aElement->GetAttributeNode(aAttribute, getter_AddRefs(attNode));
if ((NS_SUCCEEDED(result)) && attNode)
{
attNode->GetSpecified(aResultIsSet);
attNode->GetValue(aResultValue);
}
}
return result;
}
NS_IMETHODIMP
nsEditor::RemoveAttribute(nsIDOMElement *aElement, const nsAString& aAttribute)
{
nsRefPtr<ChangeAttributeTxn> txn;
nsresult result = CreateTxnForRemoveAttribute(aElement, aAttribute,
getter_AddRefs(txn));
if (NS_SUCCEEDED(result)) {
result = DoTransaction(txn);
}
return result;
}
NS_IMETHODIMP
nsEditor::MarkNodeDirty(nsIDOMNode* aNode)
{
// mark the node dirty.
nsCOMPtr<nsIContent> element (do_QueryInterface(aNode));
if (element)
element->SetAttr(kNameSpaceID_None, nsEditProperty::mozdirty,
EmptyString(), PR_FALSE);
return NS_OK;
}
NS_IMETHODIMP nsEditor::GetInlineSpellChecker(PRBool autoCreate,
nsIInlineSpellChecker ** aInlineSpellChecker)
{
NS_ENSURE_ARG_POINTER(aInlineSpellChecker);
if (mDidPreDestroy) {
// Don't allow people to get or create the spell checker once the editor
// is going away.
*aInlineSpellChecker = nsnull;
return autoCreate ? NS_ERROR_NOT_AVAILABLE : NS_OK;
}
nsresult rv;
if (!mInlineSpellChecker && autoCreate) {
mInlineSpellChecker = do_CreateInstance(MOZ_INLINESPELLCHECKER_CONTRACTID, &rv);
NS_ENSURE_SUCCESS(rv, rv);
}
if (mInlineSpellChecker) {
rv = mInlineSpellChecker->Init(this);
if (NS_FAILED(rv))
mInlineSpellChecker = nsnull;
NS_ENSURE_SUCCESS(rv, rv);
}
NS_IF_ADDREF(*aInlineSpellChecker = mInlineSpellChecker);
return NS_OK;
}
NS_IMETHODIMP nsEditor::SyncRealTimeSpell()
{
NS_TIME_FUNCTION;
PRBool enable = GetDesiredSpellCheckState();
nsCOMPtr<nsIInlineSpellChecker> spellChecker;
GetInlineSpellChecker(enable, getter_AddRefs(spellChecker));
if (spellChecker) {
spellChecker->SetEnableRealTimeSpell(enable);
}
return NS_OK;
}
NS_IMETHODIMP nsEditor::SetSpellcheckUserOverride(PRBool enable)
{
mSpellcheckCheckboxState = enable ? eTriTrue : eTriFalse;
return SyncRealTimeSpell();
}
NS_IMETHODIMP nsEditor::CreateNode(const nsAString& aTag,
nsIDOMNode * aParent,
PRInt32 aPosition,
nsIDOMNode ** aNewNode)
{
PRInt32 i;
nsAutoRules beginRulesSniffing(this, kOpCreateNode, nsIEditor::eNext);
for (i = 0; i < mActionListeners.Count(); i++)
mActionListeners[i]->WillCreateNode(aTag, aParent, aPosition);
nsRefPtr<CreateElementTxn> txn;
nsresult result = CreateTxnForCreateElement(aTag, aParent, aPosition,
getter_AddRefs(txn));
if (NS_SUCCEEDED(result))
{
result = DoTransaction(txn);
if (NS_SUCCEEDED(result))
{
result = txn->GetNewNode(aNewNode);
NS_ASSERTION((NS_SUCCEEDED(result)), "GetNewNode can't fail if txn::DoTransaction succeeded.");
}
}
mRangeUpdater.SelAdjCreateNode(aParent, aPosition);
for (i = 0; i < mActionListeners.Count(); i++)
mActionListeners[i]->DidCreateNode(aTag, *aNewNode, aParent, aPosition, result);
return result;
}
NS_IMETHODIMP nsEditor::InsertNode(nsIDOMNode * aNode,
nsIDOMNode * aParent,
PRInt32 aPosition)
{
PRInt32 i;
nsAutoRules beginRulesSniffing(this, kOpInsertNode, nsIEditor::eNext);
for (i = 0; i < mActionListeners.Count(); i++)
mActionListeners[i]->WillInsertNode(aNode, aParent, aPosition);
nsRefPtr<InsertElementTxn> txn;
nsresult result = CreateTxnForInsertElement(aNode, aParent, aPosition,
getter_AddRefs(txn));
if (NS_SUCCEEDED(result)) {
result = DoTransaction(txn);
}
mRangeUpdater.SelAdjInsertNode(aParent, aPosition);
for (i = 0; i < mActionListeners.Count(); i++)
mActionListeners[i]->DidInsertNode(aNode, aParent, aPosition, result);
return result;
}
NS_IMETHODIMP
nsEditor::SplitNode(nsIDOMNode * aNode,
PRInt32 aOffset,
nsIDOMNode **aNewLeftNode)
{
PRInt32 i;
nsAutoRules beginRulesSniffing(this, kOpSplitNode, nsIEditor::eNext);
for (i = 0; i < mActionListeners.Count(); i++)
mActionListeners[i]->WillSplitNode(aNode, aOffset);
nsRefPtr<SplitElementTxn> txn;
nsresult result = CreateTxnForSplitNode(aNode, aOffset, getter_AddRefs(txn));
if (NS_SUCCEEDED(result))
{
result = DoTransaction(txn);
if (NS_SUCCEEDED(result))
{
result = txn->GetNewNode(aNewLeftNode);
NS_ASSERTION((NS_SUCCEEDED(result)), "result must succeeded for GetNewNode");
}
}
mRangeUpdater.SelAdjSplitNode(aNode, aOffset, *aNewLeftNode);
for (i = 0; i < mActionListeners.Count(); i++)
{
nsIDOMNode *ptr = *aNewLeftNode;
mActionListeners[i]->DidSplitNode(aNode, aOffset, ptr, result);
}
return result;
}
NS_IMETHODIMP
nsEditor::JoinNodes(nsIDOMNode * aLeftNode,
nsIDOMNode * aRightNode,
nsIDOMNode * aParent)
{
PRInt32 i, offset;
nsAutoRules beginRulesSniffing(this, kOpJoinNode, nsIEditor::ePrevious);
// remember some values; later used for saved selection updating.
// find the offset between the nodes to be joined.
nsresult result = GetChildOffset(aRightNode, aParent, offset);
NS_ENSURE_SUCCESS(result, result);
// find the number of children of the lefthand node
PRUint32 oldLeftNodeLen;
result = GetLengthOfDOMNode(aLeftNode, oldLeftNodeLen);
NS_ENSURE_SUCCESS(result, result);
for (i = 0; i < mActionListeners.Count(); i++)
mActionListeners[i]->WillJoinNodes(aLeftNode, aRightNode, aParent);
nsRefPtr<JoinElementTxn> txn;
result = CreateTxnForJoinNode(aLeftNode, aRightNode, getter_AddRefs(txn));
if (NS_SUCCEEDED(result)) {
result = DoTransaction(txn);
}
mRangeUpdater.SelAdjJoinNodes(aLeftNode, aRightNode, aParent, offset, (PRInt32)oldLeftNodeLen);
for (i = 0; i < mActionListeners.Count(); i++)
mActionListeners[i]->DidJoinNodes(aLeftNode, aRightNode, aParent, result);
return result;
}
NS_IMETHODIMP nsEditor::DeleteNode(nsIDOMNode * aElement)
{
PRInt32 i, offset;
nsCOMPtr<nsIDOMNode> parent;
nsAutoRules beginRulesSniffing(this, kOpCreateNode, nsIEditor::ePrevious);
// save node location for selection updating code.
nsresult result = GetNodeLocation(aElement, address_of(parent), &offset);
NS_ENSURE_SUCCESS(result, result);
for (i = 0; i < mActionListeners.Count(); i++)
mActionListeners[i]->WillDeleteNode(aElement);
nsRefPtr<DeleteElementTxn> txn;
result = CreateTxnForDeleteElement(aElement, getter_AddRefs(txn));
if (NS_SUCCEEDED(result)) {
result = DoTransaction(txn);
}
for (i = 0; i < mActionListeners.Count(); i++)
mActionListeners[i]->DidDeleteNode(aElement, result);
return result;
}
///////////////////////////////////////////////////////////////////////////
// ReplaceContainer: replace inNode with a new node (outNode) which is contructed
// to be of type aNodeType. Put inNodes children into outNode.
// Callers responsibility to make sure inNode's children can
// go in outNode.
nsresult
nsEditor::ReplaceContainer(nsIDOMNode *inNode,
nsCOMPtr<nsIDOMNode> *outNode,
const nsAString &aNodeType,
const nsAString *aAttribute,
const nsAString *aValue,
PRBool aCloneAttributes)
{
NS_ENSURE_TRUE(inNode && outNode, NS_ERROR_NULL_POINTER);
nsCOMPtr<nsIDOMNode> parent;
PRInt32 offset;
nsresult res = GetNodeLocation(inNode, address_of(parent), &offset);
NS_ENSURE_SUCCESS(res, res);
// create new container
nsCOMPtr<nsIContent> newContent;
//new call to use instead to get proper HTML element, bug# 39919
res = CreateHTMLContent(aNodeType, getter_AddRefs(newContent));
nsCOMPtr<nsIDOMElement> elem = do_QueryInterface(newContent);
NS_ENSURE_SUCCESS(res, res);
*outNode = do_QueryInterface(elem);
// set attribute if needed
if (aAttribute && aValue && !aAttribute->IsEmpty())
{
res = elem->SetAttribute(*aAttribute, *aValue);
NS_ENSURE_SUCCESS(res, res);
}
if (aCloneAttributes)
{
nsCOMPtr<nsIDOMNode>newNode = do_QueryInterface(elem);
res = CloneAttributes(newNode, inNode);
NS_ENSURE_SUCCESS(res, res);
}
// notify our internal selection state listener
// (Note: A nsAutoSelectionReset object must be created
// before calling this to initialize mRangeUpdater)
nsAutoReplaceContainerSelNotify selStateNotify(mRangeUpdater, inNode, *outNode);
{
nsAutoTxnsConserveSelection conserveSelection(this);
nsCOMPtr<nsIDOMNode> child;
PRBool bHasMoreChildren;
inNode->HasChildNodes(&bHasMoreChildren);
while (bHasMoreChildren)
{
inNode->GetFirstChild(getter_AddRefs(child));
res = DeleteNode(child);
NS_ENSURE_SUCCESS(res, res);
res = InsertNode(child, *outNode, -1);
NS_ENSURE_SUCCESS(res, res);
inNode->HasChildNodes(&bHasMoreChildren);
}
}
// insert new container into tree
res = InsertNode( *outNode, parent, offset);
NS_ENSURE_SUCCESS(res, res);
// delete old container
return DeleteNode(inNode);
}
///////////////////////////////////////////////////////////////////////////
// RemoveContainer: remove inNode, reparenting its children into their
// the parent of inNode
//
nsresult
nsEditor::RemoveContainer(nsIDOMNode *inNode)
{
NS_ENSURE_TRUE(inNode, NS_ERROR_NULL_POINTER);
nsCOMPtr<nsIDOMNode> parent;
PRInt32 offset;
nsresult res = GetNodeLocation(inNode, address_of(parent), &offset);
NS_ENSURE_SUCCESS(res, res);
// loop through the child nodes of inNode and promote them
// into inNode's parent.
PRBool bHasMoreChildren;
inNode->HasChildNodes(&bHasMoreChildren);
nsCOMPtr<nsIDOMNodeList> nodeList;
res = inNode->GetChildNodes(getter_AddRefs(nodeList));
NS_ENSURE_SUCCESS(res, res);
NS_ENSURE_TRUE(nodeList, NS_ERROR_NULL_POINTER);
PRUint32 nodeOrigLen;
nodeList->GetLength(&nodeOrigLen);
// notify our internal selection state listener
nsAutoRemoveContainerSelNotify selNotify(mRangeUpdater, inNode, parent, offset, nodeOrigLen);
nsCOMPtr<nsIDOMNode> child;
while (bHasMoreChildren)
{
inNode->GetLastChild(getter_AddRefs(child));
res = DeleteNode(child);
NS_ENSURE_SUCCESS(res, res);
res = InsertNode(child, parent, offset);
NS_ENSURE_SUCCESS(res, res);
inNode->HasChildNodes(&bHasMoreChildren);
}
return DeleteNode(inNode);
}
///////////////////////////////////////////////////////////////////////////
// InsertContainerAbove: insert a new parent for inNode, returned in outNode,
// which is contructed to be of type aNodeType. outNode becomes
// a child of inNode's earlier parent.
// Callers responsibility to make sure inNode's can be child
// of outNode, and outNode can be child of old parent.
nsresult
nsEditor::InsertContainerAbove( nsIDOMNode *inNode,
nsCOMPtr<nsIDOMNode> *outNode,
const nsAString &aNodeType,
const nsAString *aAttribute,
const nsAString *aValue)
{
NS_ENSURE_TRUE(inNode && outNode, NS_ERROR_NULL_POINTER);
nsCOMPtr<nsIDOMNode> parent;
PRInt32 offset;
nsresult res = GetNodeLocation(inNode, address_of(parent), &offset);
NS_ENSURE_SUCCESS(res, res);
// create new container
nsCOMPtr<nsIContent> newContent;
//new call to use instead to get proper HTML element, bug# 39919
res = CreateHTMLContent(aNodeType, getter_AddRefs(newContent));
nsCOMPtr<nsIDOMElement> elem = do_QueryInterface(newContent);
NS_ENSURE_SUCCESS(res, res);
*outNode = do_QueryInterface(elem);
// set attribute if needed
if (aAttribute && aValue && !aAttribute->IsEmpty())
{
res = elem->SetAttribute(*aAttribute, *aValue);
NS_ENSURE_SUCCESS(res, res);
}
// notify our internal selection state listener
nsAutoInsertContainerSelNotify selNotify(mRangeUpdater);
// put inNode in new parent, outNode
res = DeleteNode(inNode);
NS_ENSURE_SUCCESS(res, res);
{
nsAutoTxnsConserveSelection conserveSelection(this);
res = InsertNode(inNode, *outNode, 0);
NS_ENSURE_SUCCESS(res, res);
}
// put new parent in doc
return InsertNode(*outNode, parent, offset);
}
///////////////////////////////////////////////////////////////////////////
// MoveNode: move aNode to {aParent,aOffset}
nsresult
nsEditor::MoveNode(nsIDOMNode *aNode, nsIDOMNode *aParent, PRInt32 aOffset)
{
NS_ENSURE_TRUE(aNode && aParent, NS_ERROR_NULL_POINTER);
nsCOMPtr<nsIDOMNode> oldParent;
PRInt32 oldOffset;
nsresult res = GetNodeLocation(aNode, address_of(oldParent), &oldOffset);
if (aOffset == -1)
{
PRUint32 unsignedOffset;
// magic value meaning "move to end of aParent"
res = GetLengthOfDOMNode(aParent, unsignedOffset);
NS_ENSURE_SUCCESS(res, res);
aOffset = (PRInt32)unsignedOffset;
}
// don't do anything if it's already in right place
if ((aParent == oldParent.get()) && (oldOffset == aOffset)) return NS_OK;
// notify our internal selection state listener
nsAutoMoveNodeSelNotify selNotify(mRangeUpdater, oldParent, oldOffset, aParent, aOffset);
// need to adjust aOffset if we are moving aNode further along in its current parent
if ((aParent == oldParent.get()) && (oldOffset < aOffset))
{
aOffset--; // this is because when we delete aNode, it will make the offsets after it off by one
}
// put aNode in new parent
res = DeleteNode(aNode);
NS_ENSURE_SUCCESS(res, res);
return InsertNode(aNode, aParent, aOffset);
}
NS_IMETHODIMP
nsEditor::AddEditorObserver(nsIEditorObserver *aObserver)
{
// we don't keep ownership of the observers. They must
// remove themselves as observers before they are destroyed.
NS_ENSURE_TRUE(aObserver, NS_ERROR_NULL_POINTER);
// Make sure the listener isn't already on the list
if (mEditorObservers.IndexOf(aObserver) == -1)
{
if (!mEditorObservers.AppendObject(aObserver))
return NS_ERROR_FAILURE;
}
return NS_OK;
}
NS_IMETHODIMP
nsEditor::RemoveEditorObserver(nsIEditorObserver *aObserver)
{
NS_ENSURE_TRUE(aObserver, NS_ERROR_FAILURE);
if (!mEditorObservers.RemoveObject(aObserver))
return NS_ERROR_FAILURE;
return NS_OK;
}
void nsEditor::NotifyEditorObservers(void)
{
for (PRInt32 i = 0; i < mEditorObservers.Count(); i++)
mEditorObservers[i]->EditAction();
}
NS_IMETHODIMP
nsEditor::AddEditActionListener(nsIEditActionListener *aListener)
{
NS_ENSURE_TRUE(aListener, NS_ERROR_NULL_POINTER);
// Make sure the listener isn't already on the list
if (mActionListeners.IndexOf(aListener) == -1)
{
if (!mActionListeners.AppendObject(aListener))
return NS_ERROR_FAILURE;
}
return NS_OK;
}
NS_IMETHODIMP
nsEditor::RemoveEditActionListener(nsIEditActionListener *aListener)
{
NS_ENSURE_TRUE(aListener, NS_ERROR_FAILURE);
if (!mActionListeners.RemoveObject(aListener))
return NS_ERROR_FAILURE;
return NS_OK;
}
NS_IMETHODIMP
nsEditor::AddDocumentStateListener(nsIDocumentStateListener *aListener)
{
NS_ENSURE_TRUE(aListener, NS_ERROR_NULL_POINTER);
if (mDocStateListeners.IndexOf(aListener) == -1)
{
if (!mDocStateListeners.AppendObject(aListener))
return NS_ERROR_FAILURE;
}
return NS_OK;
}
NS_IMETHODIMP
nsEditor::RemoveDocumentStateListener(nsIDocumentStateListener *aListener)
{
NS_ENSURE_TRUE(aListener, NS_ERROR_NULL_POINTER);
if (!mDocStateListeners.RemoveObject(aListener))
return NS_ERROR_FAILURE;
return NS_OK;
}
NS_IMETHODIMP nsEditor::OutputToString(const nsAString& aFormatType,
PRUint32 aFlags,
nsAString& aOutputString)
{
// these should be implemented by derived classes.
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP
nsEditor::OutputToStream(nsIOutputStream* aOutputStream,
const nsAString& aFormatType,
const nsACString& aCharsetOverride,
PRUint32 aFlags)
{
// these should be implemented by derived classes.
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP
nsEditor::DumpContentTree()
{
#ifdef DEBUG
nsCOMPtr<nsIContent> root = do_QueryInterface(mRootElement);
if (root) root->List(stdout);
#endif
return NS_OK;
}
NS_IMETHODIMP
nsEditor::DebugDumpContent()
{
#ifdef DEBUG
nsCOMPtr<nsIDOMHTMLDocument> doc = do_QueryReferent(mDocWeak);
NS_ENSURE_TRUE(doc, NS_ERROR_NOT_INITIALIZED);
nsCOMPtr<nsIDOMHTMLElement>bodyElem;
doc->GetBody(getter_AddRefs(bodyElem));
nsCOMPtr<nsIContent> content = do_QueryInterface(bodyElem);
if (content)
content->List();
#endif
return NS_OK;
}
NS_IMETHODIMP
nsEditor::DebugUnitTests(PRInt32 *outNumTests, PRInt32 *outNumTestsFailed)
{
#ifdef DEBUG
NS_NOTREACHED("This should never get called. Overridden by subclasses");
#endif
return NS_OK;
}
PRBool
nsEditor::ArePreservingSelection()
{
return !(mSavedSel.IsEmpty());
}
nsresult
nsEditor::PreserveSelectionAcrossActions(nsISelection *aSel)
{
mSavedSel.SaveSelection(aSel);
mRangeUpdater.RegisterSelectionState(mSavedSel);
return NS_OK;
}
nsresult
nsEditor::RestorePreservedSelection(nsISelection *aSel)
{
if (mSavedSel.IsEmpty()) return NS_ERROR_FAILURE;
mSavedSel.RestoreSelection(aSel);
StopPreservingSelection();
return NS_OK;
}
void
nsEditor::StopPreservingSelection()
{
mRangeUpdater.DropSelectionState(mSavedSel);
mSavedSel.MakeEmpty();
}
nsresult
nsEditor::BeginIMEComposition()
{
mInIMEMode = PR_TRUE;
if (mPhonetic) {
mPhonetic->Truncate(0);
}
return NS_OK;
}
nsresult
nsEditor::EndIMEComposition()
{
NS_ENSURE_TRUE(mInIMEMode, NS_OK); // nothing to do
nsresult rv = NS_OK;
// commit the IME transaction..we can get at it via the transaction mgr.
// Note that this means IME won't work without an undo stack!
if (mTxnMgr) {
nsCOMPtr<nsITransaction> txn;
rv = mTxnMgr->PeekUndoStack(getter_AddRefs(txn));
NS_ASSERTION(NS_SUCCEEDED(rv), "PeekUndoStack() failed");
nsCOMPtr<nsIAbsorbingTransaction> plcTxn = do_QueryInterface(txn);
if (plcTxn) {
rv = plcTxn->Commit();
NS_ASSERTION(NS_SUCCEEDED(rv),
"nsIAbsorbingTransaction::Commit() failed");
}
}
/* reset the data we need to construct a transaction */
mIMETextNode = nsnull;
mIMETextOffset = 0;
mIMEBufferLength = 0;
mInIMEMode = PR_FALSE;
mIsIMEComposing = PR_FALSE;
// notify editor observers of action
NotifyEditorObservers();
return rv;
}
NS_IMETHODIMP
nsEditor::GetPhonetic(nsAString& aPhonetic)
{
if (mPhonetic)
aPhonetic = *mPhonetic;
else
aPhonetic.Truncate(0);
return NS_OK;
}
static nsresult
GetEditorContentWindow(nsIDOMElement *aRoot, nsIWidget **aResult)
{
NS_ENSURE_TRUE(aRoot && aResult, NS_ERROR_NULL_POINTER);
*aResult = 0;
nsCOMPtr<nsIContent> content = do_QueryInterface(aRoot);
NS_ENSURE_TRUE(content, NS_ERROR_FAILURE);
// Not ref counted
nsIFrame *frame = content->GetPrimaryFrame();
NS_ENSURE_TRUE(frame, NS_ERROR_FAILURE);
*aResult = frame->GetNearestWidget();
NS_ENSURE_TRUE(*aResult, NS_ERROR_FAILURE);
NS_ADDREF(*aResult);
return NS_OK;
}
nsresult
nsEditor::GetWidget(nsIWidget **aWidget)
{
NS_ENSURE_TRUE(aWidget, NS_ERROR_NULL_POINTER);
*aWidget = nsnull;
nsCOMPtr<nsIWidget> widget;
nsresult res = GetEditorContentWindow(GetRoot(), getter_AddRefs(widget));
NS_ENSURE_SUCCESS(res, res);
NS_ENSURE_TRUE(widget, NS_ERROR_NOT_AVAILABLE);
NS_ADDREF(*aWidget = widget);
return NS_OK;
}
NS_IMETHODIMP
nsEditor::ForceCompositionEnd()
{
// We can test mInIMEMode and do some optimization for Mac and Window
// Howerver, since UNIX support over-the-spot, we cannot rely on that
// flag for Unix.
// We should use nsILookAndFeel to resolve this
#if defined(XP_MACOSX) || defined(XP_WIN) || defined(XP_OS2)
// XXXmnakano see bug 558976, ResetInputState() has two meaning which are
// "commit the composition" and "cursor is moved". This method name is
// "ForceCompositionEnd", so, ResetInputState() should be used only for the
// former here. However, ResetInputState() is also used for the latter here
// because even if we don't have composition, we call ResetInputState() on
// Linux. Currently, nsGtkIMModule can know the timing of the cursor move,
// so, the latter meaning should be gone and we should remove this #if.
if(! mInIMEMode)
return NS_OK;
#endif
nsCOMPtr<nsIWidget> widget;
nsresult res = GetWidget(getter_AddRefs(widget));
NS_ENSURE_SUCCESS(res, res);
if (widget) {
res = widget->ResetInputState();
NS_ENSURE_SUCCESS(res, res);
}
return NS_OK;
}
NS_IMETHODIMP
nsEditor::GetPreferredIMEState(PRUint32 *aState)
{
NS_ENSURE_ARG_POINTER(aState);
*aState = nsIContent::IME_STATUS_ENABLE;
if (IsReadonly() || IsDisabled()) {
*aState = nsIContent::IME_STATUS_DISABLE;
return NS_OK;
}
nsCOMPtr<nsIContent> content = do_QueryInterface(GetRoot());
NS_ENSURE_TRUE(content, NS_ERROR_FAILURE);
nsIFrame* frame = content->GetPrimaryFrame();
NS_ENSURE_TRUE(frame, NS_ERROR_FAILURE);
switch (frame->GetStyleUIReset()->mIMEMode) {
case NS_STYLE_IME_MODE_AUTO:
if (IsPasswordEditor())
*aState = nsIContent::IME_STATUS_PASSWORD;
break;
case NS_STYLE_IME_MODE_DISABLED:
// we should use password state for |ime-mode: disabled;|.
*aState = nsIContent::IME_STATUS_PASSWORD;
break;
case NS_STYLE_IME_MODE_ACTIVE:
*aState |= nsIContent::IME_STATUS_OPEN;
break;
case NS_STYLE_IME_MODE_INACTIVE:
*aState |= nsIContent::IME_STATUS_CLOSE;
break;
}
return NS_OK;
}
NS_IMETHODIMP
nsEditor::GetComposing(PRBool* aResult)
{
NS_ENSURE_ARG_POINTER(aResult);
*aResult = IsIMEComposing();
return NS_OK;
}
/* Non-interface, public methods */
NS_IMETHODIMP
nsEditor::GetRootElement(nsIDOMElement **aRootElement)
{
NS_ENSURE_ARG_POINTER(aRootElement);
NS_ENSURE_TRUE(mRootElement, NS_ERROR_NOT_AVAILABLE);
*aRootElement = mRootElement;
NS_ADDREF(*aRootElement);
return NS_OK;
}
/** All editor operations which alter the doc should be prefaced
* with a call to StartOperation, naming the action and direction */
NS_IMETHODIMP
nsEditor::StartOperation(PRInt32 opID, nsIEditor::EDirection aDirection)
{
mAction = opID;
mDirection = aDirection;
return NS_OK;
}
/** All editor operations which alter the doc should be followed
* with a call to EndOperation */
NS_IMETHODIMP
nsEditor::EndOperation()
{
mAction = nsnull;
mDirection = eNone;
return NS_OK;
}
NS_IMETHODIMP
nsEditor::CloneAttribute(const nsAString & aAttribute,
nsIDOMNode *aDestNode, nsIDOMNode *aSourceNode)
{
NS_ENSURE_TRUE(aDestNode && aSourceNode, NS_ERROR_NULL_POINTER);
nsCOMPtr<nsIDOMElement> destElement = do_QueryInterface(aDestNode);
nsCOMPtr<nsIDOMElement> sourceElement = do_QueryInterface(aSourceNode);
NS_ENSURE_TRUE(destElement && sourceElement, NS_ERROR_NO_INTERFACE);
nsAutoString attrValue;
PRBool isAttrSet;
nsresult rv = GetAttributeValue(sourceElement,
aAttribute,
attrValue,
&isAttrSet);
NS_ENSURE_SUCCESS(rv, rv);
if (isAttrSet)
rv = SetAttribute(destElement, aAttribute, attrValue);
else
rv = RemoveAttribute(destElement, aAttribute);
return rv;
}
// Objects must be DOM elements
NS_IMETHODIMP
nsEditor::CloneAttributes(nsIDOMNode *aDestNode, nsIDOMNode *aSourceNode)
{
NS_ENSURE_TRUE(aDestNode && aSourceNode, NS_ERROR_NULL_POINTER);
nsCOMPtr<nsIDOMElement> destElement = do_QueryInterface(aDestNode);
nsCOMPtr<nsIDOMElement> sourceElement = do_QueryInterface(aSourceNode);
NS_ENSURE_TRUE(destElement && sourceElement, NS_ERROR_NO_INTERFACE);
nsCOMPtr<nsIDOMNamedNodeMap> sourceAttributes;
sourceElement->GetAttributes(getter_AddRefs(sourceAttributes));
nsCOMPtr<nsIDOMNamedNodeMap> destAttributes;
destElement->GetAttributes(getter_AddRefs(destAttributes));
NS_ENSURE_TRUE(sourceAttributes && destAttributes, NS_ERROR_FAILURE);
nsAutoEditBatch beginBatching(this);
// Use transaction system for undo only if destination
// is already in the document
nsIDOMElement *rootElement = GetRoot();
NS_ENSURE_TRUE(rootElement, NS_ERROR_NULL_POINTER);
PRBool destInBody = PR_TRUE;
nsCOMPtr<nsIDOMNode> rootNode = do_QueryInterface(rootElement);
nsCOMPtr<nsIDOMNode> p = aDestNode;
while (p && p != rootNode)
{
nsCOMPtr<nsIDOMNode> tmp;
if (NS_FAILED(p->GetParentNode(getter_AddRefs(tmp))) || !tmp)
{
destInBody = PR_FALSE;
break;
}
p = tmp;
}
PRUint32 sourceCount;
sourceAttributes->GetLength(&sourceCount);
PRUint32 i, destCount;
destAttributes->GetLength(&destCount);
nsCOMPtr<nsIDOMNode> attrNode;
// Clear existing attributes
for (i = 0; i < destCount; i++)
{
// always remove item number 0 (first item in list)
if( NS_SUCCEEDED(destAttributes->Item(0, getter_AddRefs(attrNode))) && attrNode)
{
nsCOMPtr<nsIDOMAttr> destAttribute = do_QueryInterface(attrNode);
if (destAttribute)
{
nsAutoString str;
if (NS_SUCCEEDED(destAttribute->GetName(str)))
{
if (destInBody)
RemoveAttribute(destElement, str);
else
destElement->RemoveAttribute(str);
}
}
}
}
nsresult result = NS_OK;
// Set just the attributes that the source element has
for (i = 0; i < sourceCount; i++)
{
if( NS_SUCCEEDED(sourceAttributes->Item(i, getter_AddRefs(attrNode))) && attrNode)
{
nsCOMPtr<nsIDOMAttr> sourceAttribute = do_QueryInterface(attrNode);
if (sourceAttribute)
{
nsAutoString sourceAttrName;
if (NS_SUCCEEDED(sourceAttribute->GetName(sourceAttrName)))
{
nsAutoString sourceAttrValue;
/*
Presence of an attribute in the named node map indicates that it was set on the
element even if it has no value.
*/
if (NS_SUCCEEDED(sourceAttribute->GetValue(sourceAttrValue)))
{
if (destInBody) {
result = SetAttributeOrEquivalent(destElement, sourceAttrName, sourceAttrValue, PR_FALSE);
}
else {
// the element is not inserted in the document yet, we don't want to put a
// transaction on the UndoStack
result = SetAttributeOrEquivalent(destElement, sourceAttrName, sourceAttrValue, PR_TRUE);
}
} else {
// Do we ever get here?
#if DEBUG_cmanske
printf("Attribute in sourceAttribute has empty value in nsEditor::CloneAttributes()\n");
#endif
}
}
}
}
}
return result;
}
NS_IMETHODIMP nsEditor::ScrollSelectionIntoView(PRBool aScrollToAnchor)
{
nsCOMPtr<nsISelectionController> selCon;
if (NS_SUCCEEDED(GetSelectionController(getter_AddRefs(selCon))) && selCon)
{
PRInt16 region = nsISelectionController::SELECTION_FOCUS_REGION;
if (aScrollToAnchor)
region = nsISelectionController::SELECTION_ANCHOR_REGION;
selCon->ScrollSelectionIntoView(nsISelectionController::SELECTION_NORMAL,
region, 0);
}
return NS_OK;
}
NS_IMETHODIMP nsEditor::InsertTextImpl(const nsAString& aStringToInsert,
nsCOMPtr<nsIDOMNode> *aInOutNode,
PRInt32 *aInOutOffset,
nsIDOMDocument *aDoc)
{
// NOTE: caller *must* have already used nsAutoTxnsConserveSelection stack-based
// class to turn off txn selection updating. Caller also turned on rules sniffing
// if desired.
nsresult res;
NS_ENSURE_TRUE(aInOutNode && *aInOutNode && aInOutOffset && aDoc, NS_ERROR_NULL_POINTER);
if (!mInIMEMode && aStringToInsert.IsEmpty()) return NS_OK;
nsCOMPtr<nsIDOMText> nodeAsText = do_QueryInterface(*aInOutNode);
if (!nodeAsText && IsPlaintextEditor()) {
// In some cases, aInOutNode is the anonymous DIV, and aInOutOffset is 0.
// To avoid injecting unneeded text nodes, we first look to see if we have
// one available. In that case, we'll just adjust aInOutNode and aInOutOffset
// accordingly.
if (*aInOutNode == GetRoot() && *aInOutOffset == 0) {
nsCOMPtr<nsIDOMNode> possibleTextNode;
res = (*aInOutNode)->GetFirstChild(getter_AddRefs(possibleTextNode));
if (NS_SUCCEEDED(res)) {
nodeAsText = do_QueryInterface(possibleTextNode);
if (nodeAsText) {
*aInOutNode = possibleTextNode;
}
}
}
// In some other cases, aInOutNode is the anonymous DIV, and aInOutOffset points
// to the terminating mozBR. In that case, we'll adjust aInOutNode and aInOutOffset
// to the preceding text node, if any.
if (!nodeAsText && *aInOutNode == GetRoot() && *aInOutOffset > 0) {
nsCOMPtr<nsIDOMNodeList> children;
res = (*aInOutNode)->GetChildNodes(getter_AddRefs(children));
if (NS_SUCCEEDED(res)) {
nsCOMPtr<nsIDOMNode> possibleMozBRNode;
children->Item(*aInOutOffset, getter_AddRefs(possibleMozBRNode));
if (possibleMozBRNode && nsTextEditUtils::IsMozBR(possibleMozBRNode)) {
nsCOMPtr<nsIDOMNode> possibleTextNode;
res = children->Item(*aInOutOffset - 1, getter_AddRefs(possibleTextNode));
if (NS_SUCCEEDED(res)) {
nodeAsText = do_QueryInterface(possibleTextNode);
if (nodeAsText) {
PRUint32 length;
res = nodeAsText->GetLength(&length);
if (NS_SUCCEEDED(res)) {
*aInOutOffset = PRInt32(length);
*aInOutNode = possibleTextNode;
}
}
}
} else {
// The selection might be at the end of the last textnode child,
// in which case we can just append to the textnode in question.
nsCOMPtr<nsIDOMNode> possibleTextNode;
res = children->Item(*aInOutOffset - 1, getter_AddRefs(possibleTextNode));
nodeAsText = do_QueryInterface(possibleTextNode);
if (nodeAsText) {
PRUint32 length;
res = nodeAsText->GetLength(&length);
if (NS_SUCCEEDED(res)) {
*aInOutOffset = PRInt32(length);
*aInOutNode = possibleTextNode;
}
}
}
}
}
// Sometimes, aInOutNode is the mozBR element itself. In that case, we'll
// adjust the insertion point to the previous text node, if one exists, or
// to the parent anonymous DIV.
if (nsTextEditUtils::IsMozBR(*aInOutNode) && *aInOutOffset == 0) {
nsCOMPtr<nsIDOMNode> previous;
(*aInOutNode)->GetPreviousSibling(getter_AddRefs(previous));
nodeAsText = do_QueryInterface(previous);
if (nodeAsText) {
PRUint32 length;
res = nodeAsText->GetLength(&length);
if (NS_SUCCEEDED(res)) {
*aInOutOffset = PRInt32(length);
*aInOutNode = previous;
}
} else {
nsCOMPtr<nsIDOMNode> parent;
(*aInOutNode)->GetParentNode(getter_AddRefs(parent));
if (parent == GetRoot()) {
*aInOutNode = parent;
}
}
}
}
PRInt32 offset = *aInOutOffset;
if (mInIMEMode)
{
if (!nodeAsText)
{
// create a text node
res = aDoc->CreateTextNode(EmptyString(), getter_AddRefs(nodeAsText));
NS_ENSURE_SUCCESS(res, res);
NS_ENSURE_TRUE(nodeAsText, NS_ERROR_NULL_POINTER);
nsCOMPtr<nsIDOMNode> newNode = do_QueryInterface(nodeAsText);
// then we insert it into the dom tree
res = InsertNode(newNode, *aInOutNode, offset);
NS_ENSURE_SUCCESS(res, res);
offset = 0;
}
res = InsertTextIntoTextNodeImpl(aStringToInsert, nodeAsText, offset);
NS_ENSURE_SUCCESS(res, res);
}
else
{
if (nodeAsText)
{
// we are inserting text into an existing text node.
res = InsertTextIntoTextNodeImpl(aStringToInsert, nodeAsText, offset);
NS_ENSURE_SUCCESS(res, res);
*aInOutOffset += aStringToInsert.Length();
}
else
{
// we are inserting text into a non-text node
// first we have to create a textnode (this also populates it with the text)
res = aDoc->CreateTextNode(aStringToInsert, getter_AddRefs(nodeAsText));
NS_ENSURE_SUCCESS(res, res);
NS_ENSURE_TRUE(nodeAsText, NS_ERROR_NULL_POINTER);
nsCOMPtr<nsIDOMNode> newNode = do_QueryInterface(nodeAsText);
// then we insert it into the dom tree
res = InsertNode(newNode, *aInOutNode, offset);
NS_ENSURE_SUCCESS(res, res);
*aInOutNode = newNode;
*aInOutOffset = aStringToInsert.Length();
}
}
return res;
}
nsresult nsEditor::InsertTextIntoTextNodeImpl(const nsAString& aStringToInsert,
nsIDOMCharacterData *aTextNode,
PRInt32 aOffset,
PRBool aSuppressIME)
{
nsRefPtr<EditTxn> txn;
nsresult result = NS_OK;
PRBool isIMETransaction = PR_FALSE;
// aSuppressIME is used when editor must insert text, yet this text is not
// part of current ime operation. example: adjusting whitespace around an ime insertion.
if (mIMETextRangeList && mInIMEMode && !aSuppressIME)
{
if (!mIMETextNode)
{
mIMETextNode = aTextNode;
mIMETextOffset = aOffset;
}
PRUint16 len ;
len = mIMETextRangeList->GetLength();
if (len > 0)
{
nsCOMPtr<nsIPrivateTextRange> range;
for (PRUint16 i = 0; i < len; i++)
{
range = mIMETextRangeList->Item(i);
if (range)
{
PRUint16 type;
result = range->GetRangeType(&type);
if (NS_SUCCEEDED(result))
{
if (type == nsIPrivateTextRange::TEXTRANGE_RAWINPUT)
{
PRUint16 start, end;
result = range->GetRangeStart(&start);
if (NS_SUCCEEDED(result))
{
result = range->GetRangeEnd(&end);
if (NS_SUCCEEDED(result))
{
if (!mPhonetic)
mPhonetic = new nsString();
if (mPhonetic)
{
nsAutoString tmp(aStringToInsert);
tmp.Mid(*mPhonetic, start, end-start);
}
}
}
} // if
}
} // if
} // for
} // if
nsRefPtr<IMETextTxn> imeTxn;
result = CreateTxnForIMEText(aStringToInsert, getter_AddRefs(imeTxn));
txn = imeTxn;
isIMETransaction = PR_TRUE;
}
else
{
nsRefPtr<InsertTextTxn> insertTxn;
result = CreateTxnForInsertText(aStringToInsert, aTextNode, aOffset,
getter_AddRefs(insertTxn));
txn = insertTxn;
}
NS_ENSURE_SUCCESS(result, result);
// let listeners know what's up
PRInt32 i;
for (i = 0; i < mActionListeners.Count(); i++)
mActionListeners[i]->WillInsertText(aTextNode, aOffset, aStringToInsert);
// XXX we may not need these view batches anymore. This is handled at a higher level now I believe
BeginUpdateViewBatch();
result = DoTransaction(txn);
EndUpdateViewBatch();
mRangeUpdater.SelAdjInsertText(aTextNode, aOffset, aStringToInsert);
// let listeners know what happened
for (i = 0; i < mActionListeners.Count(); i++)
mActionListeners[i]->DidInsertText(aTextNode, aOffset, aStringToInsert, result);
// Added some cruft here for bug 43366. Layout was crashing because we left an
// empty text node lying around in the document. So I delete empty text nodes
// caused by IME. I have to mark the IME transaction as "fixed", which means
// that furure ime txns won't merge with it. This is because we don't want
// future ime txns trying to put their text into a node that is no longer in
// the document. This does not break undo/redo, because all these txns are
// wrapped in a parent PlaceHolder txn, and placeholder txns are already
// savvy to having multiple ime txns inside them.
// delete empty ime text node if there is one
if (isIMETransaction && mIMETextNode)
{
PRUint32 len;
mIMETextNode->GetLength(&len);
if (!len)
{
DeleteNode(mIMETextNode);
mIMETextNode = nsnull;
static_cast<IMETextTxn*>(txn.get())->MarkFixed(); // mark the ime txn "fixed"
}
}
return result;
}
NS_IMETHODIMP nsEditor::SelectEntireDocument(nsISelection *aSelection)
{
if (!aSelection) { return NS_ERROR_NULL_POINTER; }
nsIDOMElement *rootElement = GetRoot();
if (!rootElement) { return NS_ERROR_NOT_INITIALIZED; }
return aSelection->SelectAllChildren(rootElement);
}
nsresult nsEditor::GetFirstEditableNode(nsIDOMNode *aRoot, nsCOMPtr<nsIDOMNode> *outFirstNode)
{
NS_ENSURE_TRUE(aRoot && outFirstNode, NS_ERROR_NULL_POINTER);
nsresult rv = NS_OK;
*outFirstNode = nsnull;
nsCOMPtr<nsIDOMNode> node = GetLeftmostChild(aRoot);
if (node && !IsEditable(node))
{
nsCOMPtr<nsIDOMNode> next;
rv = GetNextNode(node, PR_TRUE, address_of(next));
node = next;
}
if (node != aRoot)
*outFirstNode = node;
return rv;
}
#ifdef XXX_DEAD_CODE
// jfrancis wants to keep this method around for reference
nsresult nsEditor::GetLastEditableNode(nsIDOMNode *aRoot, nsCOMPtr<nsIDOMNode> *outLastNode)
{
NS_ENSURE_TRUE(aRoot && outLastNode, NS_ERROR_NULL_POINTER);
nsresult rv = NS_OK;
*outLastNode = nsnull;
nsCOMPtr<nsIDOMNode> node = GetRightmostChild(aRoot);
if (node && !IsEditable(node))
{
nsCOMPtr<nsIDOMNode> next;
rv = GetPriorNode(node, PR_TRUE, address_of(next));
node = next;
}
if (node != aRoot)
*outLastNode = node;
return rv;
}
#endif
NS_IMETHODIMP
nsEditor::NotifyDocumentListeners(TDocumentListenerNotification aNotificationType)
{
PRInt32 numListeners = mDocStateListeners.Count();
if (!numListeners) // maybe there just aren't any.
return NS_OK;
nsCOMArray<nsIDocumentStateListener> listeners(mDocStateListeners);
nsresult rv = NS_OK;
PRInt32 i;
switch (aNotificationType)
{
case eDocumentCreated:
for (i = 0; i < numListeners;i++)
{
rv = listeners[i]->NotifyDocumentCreated();
if (NS_FAILED(rv))
break;
}
break;
case eDocumentToBeDestroyed:
for (i = 0; i < numListeners;i++)
{
rv = listeners[i]->NotifyDocumentWillBeDestroyed();
if (NS_FAILED(rv))
break;
}
break;
case eDocumentStateChanged:
{
PRBool docIsDirty;
rv = GetDocumentModified(&docIsDirty);
NS_ENSURE_SUCCESS(rv, rv);
if (docIsDirty == mDocDirtyState)
return NS_OK;
mDocDirtyState = (PRInt8)docIsDirty;
for (i = 0; i < numListeners;i++)
{
rv = listeners[i]->NotifyDocumentStateChanged(mDocDirtyState);
if (NS_FAILED(rv))
break;
}
}
break;
default:
NS_NOTREACHED("Unknown notification");
}
return rv;
}
NS_IMETHODIMP nsEditor::CreateTxnForInsertText(const nsAString & aStringToInsert,
nsIDOMCharacterData *aTextNode,
PRInt32 aOffset,
InsertTextTxn ** aTxn)
{
NS_ENSURE_TRUE(aTextNode && aTxn, NS_ERROR_NULL_POINTER);
nsresult rv;
nsRefPtr<InsertTextTxn> txn = new InsertTextTxn();
rv = txn->Init(aTextNode, aOffset, aStringToInsert, this);
if (NS_SUCCEEDED(rv))
{
txn.forget(aTxn);
}
return rv;
}
NS_IMETHODIMP nsEditor::DeleteText(nsIDOMCharacterData *aElement,
PRUint32 aOffset,
PRUint32 aLength)
{
nsRefPtr<DeleteTextTxn> txn;
nsresult result = CreateTxnForDeleteText(aElement, aOffset, aLength,
getter_AddRefs(txn));
nsAutoRules beginRulesSniffing(this, kOpDeleteText, nsIEditor::ePrevious);
if (NS_SUCCEEDED(result))
{
// let listeners know what's up
PRInt32 i;
for (i = 0; i < mActionListeners.Count(); i++)
mActionListeners[i]->WillDeleteText(aElement, aOffset, aLength);
result = DoTransaction(txn);
// let listeners know what happened
for (i = 0; i < mActionListeners.Count(); i++)
mActionListeners[i]->DidDeleteText(aElement, aOffset, aLength, result);
}
return result;
}
NS_IMETHODIMP nsEditor::CreateTxnForDeleteText(nsIDOMCharacterData *aElement,
PRUint32 aOffset,
PRUint32 aLength,
DeleteTextTxn **aTxn)
{
NS_ENSURE_TRUE(aElement, NS_ERROR_NULL_POINTER);
nsRefPtr<DeleteTextTxn> txn = new DeleteTextTxn();
nsresult rv = txn->Init(this, aElement, aOffset, aLength, &mRangeUpdater);
if (NS_SUCCEEDED(rv))
{
txn.forget(aTxn);
}
return rv;
}
NS_IMETHODIMP nsEditor::CreateTxnForSplitNode(nsIDOMNode *aNode,
PRUint32 aOffset,
SplitElementTxn **aTxn)
{
NS_ENSURE_TRUE(aNode, NS_ERROR_NULL_POINTER);
nsRefPtr<SplitElementTxn> txn = new SplitElementTxn();
nsresult rv = txn->Init(this, aNode, aOffset);
if (NS_SUCCEEDED(rv))
{
txn.forget(aTxn);
}
return rv;
}
NS_IMETHODIMP nsEditor::CreateTxnForJoinNode(nsIDOMNode *aLeftNode,
nsIDOMNode *aRightNode,
JoinElementTxn **aTxn)
{
NS_ENSURE_TRUE(aLeftNode && aRightNode, NS_ERROR_NULL_POINTER);
nsRefPtr<JoinElementTxn> txn = new JoinElementTxn();
nsresult rv = txn->Init(this, aLeftNode, aRightNode);
if (NS_SUCCEEDED(rv))
{
txn.forget(aTxn);
}
return rv;
}
// END nsEditor core implementation
// BEGIN nsEditor public helper methods
nsresult
nsEditor::SplitNodeImpl(nsIDOMNode * aExistingRightNode,
PRInt32 aOffset,
nsIDOMNode* aNewLeftNode,
nsIDOMNode* aParent)
{
#ifdef NS_DEBUG_EDITOR
if (gNoisy) { printf("SplitNodeImpl: left=%p, right=%p, offset=%d\n", (void*)aNewLeftNode, (void*)aExistingRightNode, aOffset); }
#endif
NS_ASSERTION(((nsnull!=aExistingRightNode) &&
(nsnull!=aNewLeftNode) &&
(nsnull!=aParent)),
"null arg");
nsresult result;
if ((nsnull!=aExistingRightNode) &&
(nsnull!=aNewLeftNode) &&
(nsnull!=aParent))
{
// get selection
nsCOMPtr<nsISelection> selection;
result = GetSelection(getter_AddRefs(selection));
NS_ENSURE_SUCCESS(result, result);
NS_ENSURE_TRUE(selection, NS_ERROR_NULL_POINTER);
// remember some selection points
nsCOMPtr<nsIDOMNode> selStartNode, selEndNode;
PRInt32 selStartOffset, selEndOffset;
result = GetStartNodeAndOffset(selection, getter_AddRefs(selStartNode), &selStartOffset);
if (NS_FAILED(result)) selStartNode = nsnull; // if selection is cleared, remember that
result = GetEndNodeAndOffset(selection, getter_AddRefs(selEndNode), &selEndOffset);
if (NS_FAILED(result)) selStartNode = nsnull; // if selection is cleared, remember that
nsCOMPtr<nsIDOMNode> resultNode;
result = aParent->InsertBefore(aNewLeftNode, aExistingRightNode, getter_AddRefs(resultNode));
//printf(" after insert\n"); content->List(); // DEBUG
if (NS_SUCCEEDED(result))
{
// split the children between the 2 nodes
// at this point, aExistingRightNode has all the children
// move all the children whose index is < aOffset to aNewLeftNode
if (0<=aOffset) // don't bother unless we're going to move at least one child
{
// if it's a text node, just shuffle around some text
nsCOMPtr<nsIDOMCharacterData> rightNodeAsText( do_QueryInterface(aExistingRightNode) );
nsCOMPtr<nsIDOMCharacterData> leftNodeAsText( do_QueryInterface(aNewLeftNode) );
if (leftNodeAsText && rightNodeAsText)
{
// fix right node
nsAutoString leftText;
rightNodeAsText->SubstringData(0, aOffset, leftText);
rightNodeAsText->DeleteData(0, aOffset);
// fix left node
leftNodeAsText->SetData(leftText);
// moose
}
else
{ // otherwise it's an interior node, so shuffle around the children
// go through list backwards so deletes don't interfere with the iteration
nsCOMPtr<nsIDOMNodeList> childNodes;
result = aExistingRightNode->GetChildNodes(getter_AddRefs(childNodes));
if ((NS_SUCCEEDED(result)) && (childNodes))
{
PRInt32 i=aOffset-1;
for ( ; ((NS_SUCCEEDED(result)) && (0<=i)); i--)
{
nsCOMPtr<nsIDOMNode> childNode;
result = childNodes->Item(i, getter_AddRefs(childNode));
if ((NS_SUCCEEDED(result)) && (childNode))
{
result = aExistingRightNode->RemoveChild(childNode, getter_AddRefs(resultNode));
//printf(" after remove\n"); content->List(); // DEBUG
if (NS_SUCCEEDED(result))
{
nsCOMPtr<nsIDOMNode> firstChild;
aNewLeftNode->GetFirstChild(getter_AddRefs(firstChild));
result = aNewLeftNode->InsertBefore(childNode, firstChild, getter_AddRefs(resultNode));
//printf(" after append\n"); content->List(); // DEBUG
}
}
}
}
}
// handle selection
nsCOMPtr<nsIPresShell> ps = GetPresShell();
if (ps)
ps->FlushPendingNotifications(Flush_Frames);
if (GetShouldTxnSetSelection())
{
// editor wants us to set selection at split point
selection->Collapse(aNewLeftNode, aOffset);
}
else if (selStartNode)
{
// else adjust the selection if needed. if selStartNode is null, then there was no selection.
// HACK: this is overly simplified - multi-range selections need more work than this
if (selStartNode.get() == aExistingRightNode)
{
if (selStartOffset < aOffset)
{
selStartNode = aNewLeftNode;
}
else
{
selStartOffset -= aOffset;
}
}
if (selEndNode.get() == aExistingRightNode)
{
if (selEndOffset < aOffset)
{
selEndNode = aNewLeftNode;
}
else
{
selEndOffset -= aOffset;
}
}
selection->Collapse(selStartNode,selStartOffset);
selection->Extend(selEndNode,selEndOffset);
}
}
}
}
else
result = NS_ERROR_INVALID_ARG;
return result;
}
nsresult
nsEditor::JoinNodesImpl(nsIDOMNode * aNodeToKeep,
nsIDOMNode * aNodeToJoin,
nsIDOMNode * aParent,
PRBool aNodeToKeepIsFirst)
{
NS_ASSERTION(aNodeToKeep && aNodeToJoin && aParent, "null arg");
nsresult result = NS_OK;
if (aNodeToKeep && aNodeToJoin && aParent)
{
// get selection
nsCOMPtr<nsISelection> selection;
GetSelection(getter_AddRefs(selection));
NS_ENSURE_TRUE(selection, NS_ERROR_NULL_POINTER);
// remember some selection points
nsCOMPtr<nsIDOMNode> selStartNode, selEndNode;
PRInt32 selStartOffset, selEndOffset, joinOffset, keepOffset;
result = GetStartNodeAndOffset(selection, getter_AddRefs(selStartNode), &selStartOffset);
if (NS_FAILED(result)) selStartNode = nsnull;
result = GetEndNodeAndOffset(selection, getter_AddRefs(selEndNode), &selEndOffset);
// Joe or Kin should comment here on why the following line is not a copy/paste error
if (NS_FAILED(result)) selStartNode = nsnull;
nsCOMPtr<nsIDOMNode> leftNode;
if (aNodeToKeepIsFirst)
leftNode = aNodeToKeep;
else
leftNode = aNodeToJoin;
PRUint32 firstNodeLength;
result = GetLengthOfDOMNode(leftNode, firstNodeLength);
NS_ENSURE_SUCCESS(result, result);
nsCOMPtr<nsIDOMNode> parent;
result = GetNodeLocation(aNodeToJoin, address_of(parent), &joinOffset);
NS_ENSURE_SUCCESS(result, result);
result = GetNodeLocation(aNodeToKeep, address_of(parent), &keepOffset);
NS_ENSURE_SUCCESS(result, result);
// if selection endpoint is between the nodes, remember it as being
// in the one that is going away instead. This simplifies later selection
// adjustment logic at end of this method.
if (selStartNode)
{
if (selStartNode == parent)
{
if (aNodeToKeepIsFirst)
{
if ((selStartOffset > keepOffset) && (selStartOffset <= joinOffset))
{
selStartNode = aNodeToJoin;
selStartOffset = 0;
}
}
else
{
if ((selStartOffset > joinOffset) && (selStartOffset <= keepOffset))
{
selStartNode = aNodeToJoin;
selStartOffset = firstNodeLength;
}
}
}
if (selEndNode == parent)
{
if (aNodeToKeepIsFirst)
{
if ((selEndOffset > keepOffset) && (selEndOffset <= joinOffset))
{
selEndNode = aNodeToJoin;
selEndOffset = 0;
}
}
else
{
if ((selEndOffset > joinOffset) && (selEndOffset <= keepOffset))
{
selEndNode = aNodeToJoin;
selEndOffset = firstNodeLength;
}
}
}
}
// ok, ready to do join now.
// if it's a text node, just shuffle around some text
nsCOMPtr<nsIDOMCharacterData> keepNodeAsText( do_QueryInterface(aNodeToKeep) );
nsCOMPtr<nsIDOMCharacterData> joinNodeAsText( do_QueryInterface(aNodeToJoin) );
if (keepNodeAsText && joinNodeAsText)
{
nsAutoString rightText;
nsAutoString leftText;
if (aNodeToKeepIsFirst)
{
keepNodeAsText->GetData(leftText);
joinNodeAsText->GetData(rightText);
}
else
{
keepNodeAsText->GetData(rightText);
joinNodeAsText->GetData(leftText);
}
leftText += rightText;
keepNodeAsText->SetData(leftText);
}
else
{ // otherwise it's an interior node, so shuffle around the children
nsCOMPtr<nsIDOMNodeList> childNodes;
result = aNodeToJoin->GetChildNodes(getter_AddRefs(childNodes));
if ((NS_SUCCEEDED(result)) && (childNodes))
{
PRInt32 i; // must be signed int!
PRUint32 childCount=0;
nsCOMPtr<nsIDOMNode> firstNode; //only used if aNodeToKeepIsFirst is false
childNodes->GetLength(&childCount);
if (!aNodeToKeepIsFirst)
{ // remember the first child in aNodeToKeep, we'll insert all the children of aNodeToJoin in front of it
result = aNodeToKeep->GetFirstChild(getter_AddRefs(firstNode));
// GetFirstChild returns nsnull firstNode if aNodeToKeep has no children, that's ok.
}
nsCOMPtr<nsIDOMNode> resultNode;
// have to go through the list backwards to keep deletes from interfering with iteration
nsCOMPtr<nsIDOMNode> previousChild;
for (i=childCount-1; ((NS_SUCCEEDED(result)) && (0<=i)); i--)
{
nsCOMPtr<nsIDOMNode> childNode;
result = childNodes->Item(i, getter_AddRefs(childNode));
if ((NS_SUCCEEDED(result)) && (childNode))
{
if (aNodeToKeepIsFirst)
{ // append children of aNodeToJoin
//was result = aNodeToKeep->AppendChild(childNode, getter_AddRefs(resultNode));
result = aNodeToKeep->InsertBefore(childNode, previousChild, getter_AddRefs(resultNode));
previousChild = do_QueryInterface(childNode);
}
else
{ // prepend children of aNodeToJoin
result = aNodeToKeep->InsertBefore(childNode, firstNode, getter_AddRefs(resultNode));
firstNode = do_QueryInterface(childNode);
}
}
}
}
else if (!childNodes) {
result = NS_ERROR_NULL_POINTER;
}
}
if (NS_SUCCEEDED(result))
{ // delete the extra node
nsCOMPtr<nsIDOMNode> resultNode;
result = aParent->RemoveChild(aNodeToJoin, getter_AddRefs(resultNode));
if (GetShouldTxnSetSelection())
{
// editor wants us to set selection at join point
selection->Collapse(aNodeToKeep, firstNodeLength);
}
else if (selStartNode)
{
// and adjust the selection if needed
// HACK: this is overly simplified - multi-range selections need more work than this
PRBool bNeedToAdjust = PR_FALSE;
// check to see if we joined nodes where selection starts
if (selStartNode.get() == aNodeToJoin)
{
bNeedToAdjust = PR_TRUE;
selStartNode = aNodeToKeep;
if (aNodeToKeepIsFirst)
{
selStartOffset += firstNodeLength;
}
}
else if ((selStartNode.get() == aNodeToKeep) && !aNodeToKeepIsFirst)
{
bNeedToAdjust = PR_TRUE;
selStartOffset += firstNodeLength;
}
// check to see if we joined nodes where selection ends
if (selEndNode.get() == aNodeToJoin)
{
bNeedToAdjust = PR_TRUE;
selEndNode = aNodeToKeep;
if (aNodeToKeepIsFirst)
{
selEndOffset += firstNodeLength;
}
}
else if ((selEndNode.get() == aNodeToKeep) && !aNodeToKeepIsFirst)
{
bNeedToAdjust = PR_TRUE;
selEndOffset += firstNodeLength;
}
// adjust selection if needed
if (bNeedToAdjust)
{
selection->Collapse(selStartNode,selStartOffset);
selection->Extend(selEndNode,selEndOffset);
}
}
}
}
else
result = NS_ERROR_INVALID_ARG;
return result;
}
nsresult
nsEditor::GetChildOffset(nsIDOMNode *aChild, nsIDOMNode *aParent, PRInt32 &aOffset)
{
NS_ASSERTION((aChild && aParent), "bad args");
nsCOMPtr<nsIContent> content = do_QueryInterface(aParent);
nsCOMPtr<nsIContent> cChild = do_QueryInterface(aChild);
NS_ENSURE_TRUE(cChild && content, NS_ERROR_NULL_POINTER);
aOffset = content->IndexOf(cChild);
return NS_OK;
}
nsresult
nsEditor::GetNodeLocation(nsIDOMNode *inChild, nsCOMPtr<nsIDOMNode> *outParent, PRInt32 *outOffset)
{
NS_ASSERTION((inChild && outParent && outOffset), "bad args");
nsresult result = NS_ERROR_NULL_POINTER;
if (inChild && outParent && outOffset)
{
result = inChild->GetParentNode(getter_AddRefs(*outParent));
if ((NS_SUCCEEDED(result)) && (*outParent))
{
result = GetChildOffset(inChild, *outParent, *outOffset);
}
}
return result;
}
// returns the number of things inside aNode.
// If aNode is text, returns number of characters. If not, returns number of children nodes.
nsresult
nsEditor::GetLengthOfDOMNode(nsIDOMNode *aNode, PRUint32 &aCount)
{
aCount = 0;
if (!aNode) { return NS_ERROR_NULL_POINTER; }
nsresult result=NS_OK;
nsCOMPtr<nsIDOMCharacterData>nodeAsChar = do_QueryInterface(aNode);
if (nodeAsChar) {
nodeAsChar->GetLength(&aCount);
}
else
{
PRBool hasChildNodes;
aNode->HasChildNodes(&hasChildNodes);
if (hasChildNodes)
{
nsCOMPtr<nsIDOMNodeList>nodeList;
result = aNode->GetChildNodes(getter_AddRefs(nodeList));
if (NS_SUCCEEDED(result) && nodeList) {
nodeList->GetLength(&aCount);
}
}
}
return result;
}
nsresult
nsEditor::GetPriorNode(nsIDOMNode *aParentNode,
PRInt32 aOffset,
PRBool aEditableNode,
nsCOMPtr<nsIDOMNode> *aResultNode,
PRBool bNoBlockCrossing)
{
// just another version of GetPriorNode that takes a {parent, offset}
// instead of a node
if (!aParentNode || !aResultNode) { return NS_ERROR_NULL_POINTER; }
*aResultNode = nsnull;
// if we are at beginning of node, or it is a textnode, then just look before it
if (!aOffset || IsTextNode(aParentNode))
{
if (bNoBlockCrossing && IsBlockNode(aParentNode))
{
// if we aren't allowed to cross blocks, don't look before this block
return NS_OK;
}
return GetPriorNode(aParentNode, aEditableNode, aResultNode, bNoBlockCrossing);
}
// else look before the child at 'aOffset'
nsCOMPtr<nsIDOMNode> child = GetChildAt(aParentNode, aOffset);
if (child)
return GetPriorNode(child, aEditableNode, aResultNode, bNoBlockCrossing);
// unless there isn't one, in which case we are at the end of the node
// and want the deep-right child.
*aResultNode = GetRightmostChild(aParentNode, bNoBlockCrossing);
if (!*aResultNode || !aEditableNode || IsEditable(*aResultNode))
return NS_OK;
// restart the search from the non-editable node we just found
nsCOMPtr<nsIDOMNode> notEditableNode = do_QueryInterface(*aResultNode);
return GetPriorNode(notEditableNode, aEditableNode, aResultNode, bNoBlockCrossing);
}
nsresult
nsEditor::GetNextNode(nsIDOMNode *aParentNode,
PRInt32 aOffset,
PRBool aEditableNode,
nsCOMPtr<nsIDOMNode> *aResultNode,
PRBool bNoBlockCrossing)
{
// just another version of GetNextNode that takes a {parent, offset}
// instead of a node
if (!aParentNode || !aResultNode) { return NS_ERROR_NULL_POINTER; }
*aResultNode = nsnull;
// if aParentNode is a text node, use it's location instead
if (IsTextNode(aParentNode))
{
nsCOMPtr<nsIDOMNode> parent;
nsEditor::GetNodeLocation(aParentNode, address_of(parent), &aOffset);
aParentNode = parent;
aOffset++; // _after_ the text node
}
// look at the child at 'aOffset'
nsCOMPtr<nsIDOMNode> child = GetChildAt(aParentNode, aOffset);
if (child)
{
if (bNoBlockCrossing && IsBlockNode(child))
{
*aResultNode = child; // return this block
return NS_OK;
}
*aResultNode = GetLeftmostChild(child, bNoBlockCrossing);
if (!*aResultNode)
{
*aResultNode = child;
return NS_OK;
}
if (!IsDescendantOfBody(*aResultNode))
{
*aResultNode = nsnull;
return NS_OK;
}
if (!aEditableNode || IsEditable(*aResultNode))
return NS_OK;
// restart the search from the non-editable node we just found
nsCOMPtr<nsIDOMNode> notEditableNode = do_QueryInterface(*aResultNode);
return GetNextNode(notEditableNode, aEditableNode, aResultNode, bNoBlockCrossing);
}
// unless there isn't one, in which case we are at the end of the node
// and want the next one.
if (bNoBlockCrossing && IsBlockNode(aParentNode))
{
// don't cross out of parent block
return NS_OK;
}
return GetNextNode(aParentNode, aEditableNode, aResultNode, bNoBlockCrossing);
}
nsresult
nsEditor::GetPriorNode(nsIDOMNode *aCurrentNode,
PRBool aEditableNode,
nsCOMPtr<nsIDOMNode> *aResultNode,
PRBool bNoBlockCrossing)
{
nsresult result;
if (!aCurrentNode || !aResultNode) { return NS_ERROR_NULL_POINTER; }
*aResultNode = nsnull; // init out-param
if (IsRootNode(aCurrentNode))
{
// Don't allow traversal above the root node! This helps
// prevent us from accidentally editing browser content
// when the editor is in a text widget.
return NS_OK;
}
nsCOMPtr<nsIDOMNode> candidate;
result = GetPriorNodeImpl(aCurrentNode, aEditableNode, address_of(candidate), bNoBlockCrossing);
NS_ENSURE_SUCCESS(result, result);
if (!candidate)
{
// we could not find a prior node. return null.
return NS_OK;
}
else if (!aEditableNode) *aResultNode = candidate;
else if (IsEditable(candidate)) *aResultNode = candidate;
else
{ // restart the search from the non-editable node we just found
nsCOMPtr<nsIDOMNode> notEditableNode = do_QueryInterface(candidate);
return GetPriorNode(notEditableNode, aEditableNode, aResultNode, bNoBlockCrossing);
}
return result;
}
nsresult
nsEditor::GetPriorNodeImpl(nsIDOMNode *aCurrentNode,
PRBool aEditableNode,
nsCOMPtr<nsIDOMNode> *aResultNode,
PRBool bNoBlockCrossing)
{
// called only by GetPriorNode so we don't need to check params.
// if aCurrentNode has a left sibling, return that sibling's rightmost child (or itself if it has no children)
nsCOMPtr<nsIDOMNode> prevSibling;
nsresult result = aCurrentNode->GetPreviousSibling(getter_AddRefs(prevSibling));
if ((NS_SUCCEEDED(result)) && prevSibling)
{
if (bNoBlockCrossing && IsBlockNode(prevSibling))
{
// don't look inside prevsib, since it is a block
*aResultNode = prevSibling;
return NS_OK;
}
*aResultNode = GetRightmostChild(prevSibling, bNoBlockCrossing);
if (!*aResultNode)
{
*aResultNode = prevSibling;
return NS_OK;
}
if (!IsDescendantOfBody(*aResultNode))
{
*aResultNode = nsnull;
return NS_OK;
}
}
else
{
// otherwise, walk up the parent tree until there is a child that comes before
// the ancestor of aCurrentNode. Then return that node's rightmost child
nsCOMPtr<nsIDOMNode> parent = do_QueryInterface(aCurrentNode);
nsCOMPtr<nsIDOMNode> node, notEditableNode;
do {
node = parent;
result = node->GetParentNode(getter_AddRefs(parent));
if ((NS_SUCCEEDED(result)) && parent)
{
if (!IsDescendantOfBody(parent))
{
*aResultNode = nsnull;
return NS_OK;
}
if ((bNoBlockCrossing && IsBlockNode(parent)) || IsRootNode(parent))
{
// we are at front of block or root, do not step out
*aResultNode = nsnull;
return NS_OK;
}
result = parent->GetPreviousSibling(getter_AddRefs(node));
if ((NS_SUCCEEDED(result)) && node)
{
if (bNoBlockCrossing && IsBlockNode(node))
{
// prev sibling is a block, do not step into it
*aResultNode = node;
return NS_OK;
}
*aResultNode = GetRightmostChild(node, bNoBlockCrossing);
if (!*aResultNode) *aResultNode = node;
return NS_OK;
}
}
} while ((NS_SUCCEEDED(result)) && parent && !*aResultNode);
}
return result;
}
nsresult
nsEditor::GetNextNode(nsIDOMNode *aCurrentNode,
PRBool aEditableNode,
nsCOMPtr<nsIDOMNode> *aResultNode,
PRBool bNoBlockCrossing)
{
if (!aCurrentNode || !aResultNode) { return NS_ERROR_NULL_POINTER; }
*aResultNode = nsnull; // init out-param
if (IsRootNode(aCurrentNode))
{
// Don't allow traversal above the root node! This helps
// prevent us from accidentally editing browser content
// when the editor is in a text widget.
return NS_OK;
}
nsCOMPtr<nsIDOMNode> candidate;
nsresult result = GetNextNodeImpl(aCurrentNode, aEditableNode,
address_of(candidate), bNoBlockCrossing);
NS_ENSURE_SUCCESS(result, result);
if (!candidate)
{
// we could not find a next node. return null.
*aResultNode = nsnull;
return NS_OK;
}
else if (!aEditableNode) *aResultNode = candidate;
else if (IsEditable(candidate)) *aResultNode = candidate;
else
{ // restart the search from the non-editable node we just found
nsCOMPtr<nsIDOMNode> notEditableNode = do_QueryInterface(candidate);
return GetNextNode(notEditableNode, aEditableNode, aResultNode, bNoBlockCrossing);
}
return result;
}
nsresult
nsEditor::GetNextNodeImpl(nsIDOMNode *aCurrentNode,
PRBool aEditableNode,
nsCOMPtr<nsIDOMNode> *aResultNode,
PRBool bNoBlockCrossing)
{
// called only by GetNextNode so we don't need to check params.
// if aCurrentNode has a right sibling, return that sibling's leftmost child (or itself if it has no children)
nsCOMPtr<nsIDOMNode> nextSibling;
nsresult result = aCurrentNode->GetNextSibling(getter_AddRefs(nextSibling));
if ((NS_SUCCEEDED(result)) && nextSibling)
{
if (bNoBlockCrossing && IsBlockNode(nextSibling))
{
// next sibling is a block, do not step into it
*aResultNode = nextSibling;
return NS_OK;
}
*aResultNode = GetLeftmostChild(nextSibling, bNoBlockCrossing);
if (!*aResultNode)
{
*aResultNode = nextSibling;
return NS_OK;
}
if (!IsDescendantOfBody(*aResultNode))
{
*aResultNode = nsnull;
return NS_OK;
}
}
else
{
// otherwise, walk up the parent tree until there is a child that comes after
// the ancestor of aCurrentNode. Then return that node's leftmost child
nsCOMPtr<nsIDOMNode> parent(do_QueryInterface(aCurrentNode));
nsCOMPtr<nsIDOMNode> node, notEditableNode;
do {
node = parent;
result = node->GetParentNode(getter_AddRefs(parent));
if ((NS_SUCCEEDED(result)) && parent)
{
if (!IsDescendantOfBody(parent))
{
*aResultNode = nsnull;
return NS_OK;
}
if ((bNoBlockCrossing && IsBlockNode(parent)) || IsRootNode(parent))
{
// we are at end of block or root, do not step out
*aResultNode = nsnull;
return NS_OK;
}
result = parent->GetNextSibling(getter_AddRefs(node));
if ((NS_SUCCEEDED(result)) && node)
{
if (bNoBlockCrossing && IsBlockNode(node))
{
// next sibling is a block, do not step into it
*aResultNode = node;
return NS_OK;
}
*aResultNode = GetLeftmostChild(node, bNoBlockCrossing);
if (!*aResultNode) *aResultNode = node;
return NS_OK;
}
}
} while ((NS_SUCCEEDED(result)) && parent);
}
return result;
}
nsCOMPtr<nsIDOMNode>
nsEditor::GetRightmostChild(nsIDOMNode *aCurrentNode,
PRBool bNoBlockCrossing)
{
NS_ENSURE_TRUE(aCurrentNode, nsnull);
nsCOMPtr<nsIDOMNode> resultNode, temp=aCurrentNode;
PRBool hasChildren;
aCurrentNode->HasChildNodes(&hasChildren);
while (hasChildren)
{
temp->GetLastChild(getter_AddRefs(resultNode));
if (resultNode)
{
if (bNoBlockCrossing && IsBlockNode(resultNode))
return resultNode;
resultNode->HasChildNodes(&hasChildren);
temp = resultNode;
}
else
hasChildren = PR_FALSE;
}
return resultNode;
}
nsCOMPtr<nsIDOMNode>
nsEditor::GetLeftmostChild(nsIDOMNode *aCurrentNode,
PRBool bNoBlockCrossing)
{
NS_ENSURE_TRUE(aCurrentNode, nsnull);
nsCOMPtr<nsIDOMNode> resultNode, temp=aCurrentNode;
PRBool hasChildren;
aCurrentNode->HasChildNodes(&hasChildren);
while (hasChildren)
{
temp->GetFirstChild(getter_AddRefs(resultNode));
if (resultNode)
{
if (bNoBlockCrossing && IsBlockNode(resultNode))
return resultNode;
resultNode->HasChildNodes(&hasChildren);
temp = resultNode;
}
else
hasChildren = PR_FALSE;
}
return resultNode;
}
PRBool
nsEditor::IsBlockNode(nsIDOMNode *aNode)
{
// stub to be overridden in nsHTMLEditor.
// screwing around with the class hierarchy here in order
// to not duplicate the code in GetNextNode/GetPrevNode
// across both nsEditor/nsHTMLEditor.
return PR_FALSE;
}
PRBool
nsEditor::CanContainTag(nsIDOMNode* aParent, const nsAString &aChildTag)
{
nsCOMPtr<nsIDOMElement> parentElement = do_QueryInterface(aParent);
NS_ENSURE_TRUE(parentElement, PR_FALSE);
nsAutoString parentStringTag;
parentElement->GetTagName(parentStringTag);
return TagCanContainTag(parentStringTag, aChildTag);
}
PRBool
nsEditor::TagCanContain(const nsAString &aParentTag, nsIDOMNode* aChild)
{
nsAutoString childStringTag;
if (IsTextNode(aChild))
{
childStringTag.AssignLiteral("#text");
}
else
{
nsCOMPtr<nsIDOMElement> childElement = do_QueryInterface(aChild);
NS_ENSURE_TRUE(childElement, PR_FALSE);
childElement->GetTagName(childStringTag);
}
return TagCanContainTag(aParentTag, childStringTag);
}
PRBool
nsEditor::TagCanContainTag(const nsAString &aParentTag, const nsAString &aChildTag)
{
return PR_TRUE;
}
PRBool
nsEditor::IsRootNode(nsIDOMNode *inNode)
{
NS_ENSURE_TRUE(inNode, PR_FALSE);
nsIDOMElement *rootElement = GetRoot();
nsCOMPtr<nsIDOMNode> rootNode = do_QueryInterface(rootElement);
return inNode == rootNode;
}
PRBool
nsEditor::IsDescendantOfBody(nsIDOMNode *inNode)
{
NS_ENSURE_TRUE(inNode, PR_FALSE);
nsIDOMElement *rootElement = GetRoot();
NS_ENSURE_TRUE(rootElement, PR_FALSE);
nsCOMPtr<nsIDOMNode> root = do_QueryInterface(rootElement);
if (inNode == root.get()) return PR_TRUE;
nsCOMPtr<nsIDOMNode> parent, node = do_QueryInterface(inNode);
do
{
node->GetParentNode(getter_AddRefs(parent));
if (parent == root) return PR_TRUE;
node = parent;
} while (parent);
return PR_FALSE;
}
PRBool
nsEditor::IsContainer(nsIDOMNode *aNode)
{
return aNode ? PR_TRUE : PR_FALSE;
}
PRBool
nsEditor::IsTextInDirtyFrameVisible(nsIDOMNode *aNode)
{
// virtual method
//
// If this is a simple non-html editor,
// the best we can do is to assume it's visible.
return PR_TRUE;
}
PRBool
nsEditor::IsEditable(nsIDOMNode *aNode)
{
NS_ENSURE_TRUE(aNode, PR_FALSE);
if (IsMozEditorBogusNode(aNode) || !IsModifiableNode(aNode)) return PR_FALSE;
// see if it has a frame. If so, we'll edit it.
// special case for textnodes: frame must have width.
nsCOMPtr<nsIContent> content = do_QueryInterface(aNode);
if (content)
{
nsIFrame *resultFrame = content->GetPrimaryFrame();
if (!resultFrame) // if it has no frame, it is not editable
return PR_FALSE;
NS_ASSERTION(content->IsNodeOfType(nsINode::eTEXT) ||
content->IsElement(),
"frame for non element-or-text?");
if (!content->IsNodeOfType(nsINode::eTEXT))
return PR_TRUE; // not a text node; has a frame
// test the textframe and all its non-fluid continuations
while (resultFrame) {
if (resultFrame->GetStateBits() & NS_FRAME_IS_DIRTY) // we can only trust width data for undirty frames
{
// In the past a comment said:
// "assume all text nodes with dirty frames are editable"
// Nowadays we use a virtual function, that assumes TRUE
// in the simple editor world,
// and uses enhanced logic to find out in the HTML world.
return IsTextInDirtyFrameVisible(aNode);
}
if (resultFrame->HasAnyNoncollapsedCharacters()) {
return PR_TRUE;
}
resultFrame = resultFrame->GetNextContinuation();
}
}
return PR_FALSE; // didn't pass any editability test
}
PRBool
nsEditor::IsMozEditorBogusNode(nsIDOMNode *aNode)
{
nsCOMPtr<nsIContent> element = do_QueryInterface(aNode);
return element &&
element->AttrValueIs(kNameSpaceID_None, kMOZEditorBogusNodeAttrAtom,
kMOZEditorBogusNodeValue, eCaseMatters);
}
nsresult
nsEditor::CountEditableChildren(nsIDOMNode *aNode, PRUint32 &outCount)
{
outCount = 0;
if (!aNode) { return NS_ERROR_NULL_POINTER; }
nsresult res=NS_OK;
PRBool hasChildNodes;
aNode->HasChildNodes(&hasChildNodes);
if (hasChildNodes)
{
nsCOMPtr<nsIDOMNodeList>nodeList;
res = aNode->GetChildNodes(getter_AddRefs(nodeList));
if (NS_SUCCEEDED(res) && nodeList)
{
PRUint32 i;
PRUint32 len;
nodeList->GetLength(&len);
for (i=0 ; i<len; i++)
{
nsCOMPtr<nsIDOMNode> child;
res = nodeList->Item((PRInt32)i, getter_AddRefs(child));
if ((NS_SUCCEEDED(res)) && (child))
{
if (IsEditable(child))
{
outCount++;
}
}
}
}
else if (!nodeList)
res = NS_ERROR_NULL_POINTER;
}
return res;
}
//END nsEditor static utility methods
NS_IMETHODIMP nsEditor::IncrementModificationCount(PRInt32 inNumMods)
{
PRUint32 oldModCount = mModCount;
mModCount += inNumMods;
if ((oldModCount == 0 && mModCount != 0)
|| (oldModCount != 0 && mModCount == 0))
NotifyDocumentListeners(eDocumentStateChanged);
return NS_OK;
}
NS_IMETHODIMP nsEditor::GetModificationCount(PRInt32 *outModCount)
{
NS_ENSURE_ARG_POINTER(outModCount);
*outModCount = mModCount;
return NS_OK;
}
NS_IMETHODIMP nsEditor::ResetModificationCount()
{
PRBool doNotify = (mModCount != 0);
mModCount = 0;
if (doNotify)
NotifyDocumentListeners(eDocumentStateChanged);
return NS_OK;
}
//END nsEditor Private methods
///////////////////////////////////////////////////////////////////////////
// GetTag: digs out the atom for the tag of this node
//
nsIAtom *
nsEditor::GetTag(nsIDOMNode *aNode)
{
nsCOMPtr<nsIContent> content = do_QueryInterface(aNode);
if (!content)
{
NS_ASSERTION(aNode, "null node passed to nsEditor::Tag()");
return nsnull;
}
return content->Tag();
}
///////////////////////////////////////////////////////////////////////////
// GetTagString: digs out string for the tag of this node
//
nsresult
nsEditor::GetTagString(nsIDOMNode *aNode, nsAString& outString)
{
if (!aNode)
{
NS_NOTREACHED("null node passed to nsEditor::GetTag()");
return NS_ERROR_NULL_POINTER;
}
nsIAtom *atom = GetTag(aNode);
if (!atom)
{
return NS_ERROR_FAILURE;
}
atom->ToString(outString);
return NS_OK;
}
///////////////////////////////////////////////////////////////////////////
// NodesSameType: do these nodes have the same tag?
//
PRBool
nsEditor::NodesSameType(nsIDOMNode *aNode1, nsIDOMNode *aNode2)
{
if (!aNode1 || !aNode2)
{
NS_NOTREACHED("null node passed to nsEditor::NodesSameType()");
return PR_FALSE;
}
return GetTag(aNode1) == GetTag(aNode2);
}
// IsTextOrElementNode: true if node of dom type element or text
//
PRBool
nsEditor::IsTextOrElementNode(nsIDOMNode *aNode)
{
if (!aNode)
{
NS_NOTREACHED("null node passed to IsTextOrElementNode()");
return PR_FALSE;
}
PRUint16 nodeType;
aNode->GetNodeType(&nodeType);
return ((nodeType == nsIDOMNode::ELEMENT_NODE) || (nodeType == nsIDOMNode::TEXT_NODE));
}
///////////////////////////////////////////////////////////////////////////
// IsTextNode: true if node of dom type text
//
PRBool
nsEditor::IsTextNode(nsIDOMNode *aNode)
{
if (!aNode)
{
NS_NOTREACHED("null node passed to IsTextNode()");
return PR_FALSE;
}
PRUint16 nodeType;
aNode->GetNodeType(&nodeType);
return (nodeType == nsIDOMNode::TEXT_NODE);
}
///////////////////////////////////////////////////////////////////////////
// GetIndexOf: returns the position index of the node in the parent
//
PRInt32
nsEditor::GetIndexOf(nsIDOMNode *parent, nsIDOMNode *child)
{
nsCOMPtr<nsINode> parentNode = do_QueryInterface(parent);
NS_PRECONDITION(parentNode, "null parentNode in nsEditor::GetIndexOf");
NS_PRECONDITION(parentNode->IsNodeOfType(nsINode::eCONTENT) ||
parentNode->IsNodeOfType(nsINode::eDOCUMENT),
"The parent node must be an element node or a document node");
nsCOMPtr<nsIContent> cChild = do_QueryInterface(child);
NS_PRECONDITION(cChild, "null content in nsEditor::GetIndexOf");
return parentNode->IndexOf(cChild);
}
///////////////////////////////////////////////////////////////////////////
// GetChildAt: returns the node at this position index in the parent
//
nsCOMPtr<nsIDOMNode>
nsEditor::GetChildAt(nsIDOMNode *aParent, PRInt32 aOffset)
{
nsCOMPtr<nsIDOMNode> resultNode;
nsCOMPtr<nsIContent> parent = do_QueryInterface(aParent);
NS_ENSURE_TRUE(parent, resultNode);
resultNode = do_QueryInterface(parent->GetChildAt(aOffset));
return resultNode;
}
///////////////////////////////////////////////////////////////////////////
// GetNodeAtRangeOffsetPoint: returns the node at this position in a range,
// assuming that aParentOrNode is the node itself if it's a text node, or
// the node's parent otherwise.
//
nsCOMPtr<nsIDOMNode>
nsEditor::GetNodeAtRangeOffsetPoint(nsIDOMNode* aParentOrNode, PRInt32 aOffset)
{
if (IsTextNode(aParentOrNode)) {
return aParentOrNode;
}
return GetChildAt(aParentOrNode, aOffset);
}
///////////////////////////////////////////////////////////////////////////
// GetStartNodeAndOffset: returns whatever the start parent & offset is of
// the first range in the selection.
nsresult
nsEditor::GetStartNodeAndOffset(nsISelection *aSelection,
nsIDOMNode **outStartNode,
PRInt32 *outStartOffset)
{
NS_ENSURE_TRUE(outStartNode && outStartOffset && aSelection, NS_ERROR_NULL_POINTER);
*outStartNode = nsnull;
*outStartOffset = 0;
nsCOMPtr<nsISelectionPrivate>selPrivate(do_QueryInterface(aSelection));
nsCOMPtr<nsIEnumerator> enumerator;
nsresult result = selPrivate->GetEnumerator(getter_AddRefs(enumerator));
NS_ENSURE_SUCCESS(result, result);
NS_ENSURE_TRUE(enumerator, NS_ERROR_FAILURE);
enumerator->First();
nsCOMPtr<nsISupports> currentItem;
result = enumerator->CurrentItem(getter_AddRefs(currentItem));
NS_ENSURE_SUCCESS(result, result);
nsCOMPtr<nsIDOMRange> range( do_QueryInterface(currentItem) );
NS_ENSURE_TRUE(range, NS_ERROR_FAILURE);
result = range->GetStartContainer(outStartNode);
NS_ENSURE_SUCCESS(result, result);
result = range->GetStartOffset(outStartOffset);
NS_ENSURE_SUCCESS(result, result);
return NS_OK;
}
///////////////////////////////////////////////////////////////////////////
// GetEndNodeAndOffset: returns whatever the end parent & offset is of
// the first range in the selection.
nsresult
nsEditor::GetEndNodeAndOffset(nsISelection *aSelection,
nsIDOMNode **outEndNode,
PRInt32 *outEndOffset)
{
NS_ENSURE_TRUE(outEndNode && outEndOffset, NS_ERROR_NULL_POINTER);
*outEndNode = nsnull;
nsCOMPtr<nsISelectionPrivate>selPrivate(do_QueryInterface(aSelection));
nsCOMPtr<nsIEnumerator> enumerator;
nsresult result = selPrivate->GetEnumerator(getter_AddRefs(enumerator));
if (NS_FAILED(result) || !enumerator)
return NS_ERROR_FAILURE;
enumerator->First();
nsCOMPtr<nsISupports> currentItem;
if (NS_FAILED(enumerator->CurrentItem(getter_AddRefs(currentItem))))
return NS_ERROR_FAILURE;
nsCOMPtr<nsIDOMRange> range( do_QueryInterface(currentItem) );
NS_ENSURE_TRUE(range, NS_ERROR_FAILURE);
if (NS_FAILED(range->GetEndContainer(outEndNode)))
return NS_ERROR_FAILURE;
if (NS_FAILED(range->GetEndOffset(outEndOffset)))
return NS_ERROR_FAILURE;
return NS_OK;
}
///////////////////////////////////////////////////////////////////////////
// IsPreformatted: checks the style info for the node for the preformatted
// text style.
nsresult
nsEditor::IsPreformatted(nsIDOMNode *aNode, PRBool *aResult)
{
nsCOMPtr<nsIContent> content = do_QueryInterface(aNode);
NS_ENSURE_TRUE(aResult && content, NS_ERROR_NULL_POINTER);
nsCOMPtr<nsIPresShell> ps = GetPresShell();
NS_ENSURE_TRUE(ps, NS_ERROR_NOT_INITIALIZED);
// Look at the node (and its parent if it's not an element), and grab its style context
nsRefPtr<nsStyleContext> elementStyle;
if (!content->IsElement()) {
content = content->GetParent();
}
if (content && content->IsElement()) {
elementStyle = nsComputedDOMStyle::GetStyleContextForElement(content->AsElement(),
nsnull,
ps);
}
if (!elementStyle)
{
// Consider nodes without a style context to be NOT preformatted:
// For instance, this is true of JS tags inside the body (which show
// up as #text nodes but have no style context).
*aResult = PR_FALSE;
return NS_OK;
}
const nsStyleText* styleText = elementStyle->GetStyleText();
*aResult = styleText->WhiteSpaceIsSignificant();
return NS_OK;
}
///////////////////////////////////////////////////////////////////////////
// SplitNodeDeep: this splits a node "deeply", splitting children as
// appropriate. The place to split is represented by
// a dom point at {splitPointParent, splitPointOffset}.
// That dom point must be inside aNode, which is the node to
// split. outOffset is set to the offset in the parent of aNode where
// the split terminates - where you would want to insert
// a new element, for instance, if that's why you were splitting
// the node.
//
nsresult
nsEditor::SplitNodeDeep(nsIDOMNode *aNode,
nsIDOMNode *aSplitPointParent,
PRInt32 aSplitPointOffset,
PRInt32 *outOffset,
PRBool aNoEmptyContainers,
nsCOMPtr<nsIDOMNode> *outLeftNode,
nsCOMPtr<nsIDOMNode> *outRightNode)
{
NS_ENSURE_TRUE(aNode && aSplitPointParent && outOffset, NS_ERROR_NULL_POINTER);
nsCOMPtr<nsIDOMNode> tempNode, parentNode;
PRInt32 offset = aSplitPointOffset;
nsresult res;
if (outLeftNode) *outLeftNode = nsnull;
if (outRightNode) *outRightNode = nsnull;
nsCOMPtr<nsIDOMNode> nodeToSplit = do_QueryInterface(aSplitPointParent);
while (nodeToSplit)
{
// need to insert rules code call here to do things like
// not split a list if you are after the last <li> or before the first, etc.
// for now we just have some smarts about unneccessarily splitting
// textnodes, which should be universal enough to put straight in
// this nsEditor routine.
nsCOMPtr<nsIDOMCharacterData> nodeAsText = do_QueryInterface(nodeToSplit);
PRUint32 len;
PRBool bDoSplit = PR_FALSE;
res = GetLengthOfDOMNode(nodeToSplit, len);
NS_ENSURE_SUCCESS(res, res);
if (!(aNoEmptyContainers || nodeAsText) || (offset && (offset != (PRInt32)len)))
{
bDoSplit = PR_TRUE;
res = SplitNode(nodeToSplit, offset, getter_AddRefs(tempNode));
NS_ENSURE_SUCCESS(res, res);
if (outRightNode) *outRightNode = nodeToSplit;
if (outLeftNode) *outLeftNode = tempNode;
}
res = nodeToSplit->GetParentNode(getter_AddRefs(parentNode));
NS_ENSURE_SUCCESS(res, res);
NS_ENSURE_TRUE(parentNode, NS_ERROR_FAILURE);
if (!bDoSplit && offset) // must be "end of text node" case, we didn't split it, just move past it
{
offset = GetIndexOf(parentNode, nodeToSplit) +1;
if (outLeftNode) *outLeftNode = nodeToSplit;
}
else
{
offset = GetIndexOf(parentNode, nodeToSplit);
if (outRightNode) *outRightNode = nodeToSplit;
}
if (nodeToSplit.get() == aNode) // we split all the way up to (and including) aNode; we're done
break;
nodeToSplit = parentNode;
}
if (!nodeToSplit)
{
NS_NOTREACHED("null node obtained in nsEditor::SplitNodeDeep()");
return NS_ERROR_FAILURE;
}
*outOffset = offset;
return NS_OK;
}
///////////////////////////////////////////////////////////////////////////
// JoinNodeDeep: this joins two like nodes "deeply", joining children as
// appropriate.
nsresult
nsEditor::JoinNodeDeep(nsIDOMNode *aLeftNode,
nsIDOMNode *aRightNode,
nsCOMPtr<nsIDOMNode> *aOutJoinNode,
PRInt32 *outOffset)
{
NS_ENSURE_TRUE(aLeftNode && aRightNode && aOutJoinNode && outOffset, NS_ERROR_NULL_POINTER);
// while the rightmost children and their descendants of the left node
// match the leftmost children and their descendants of the right node
// join them up. Can you say that three times fast?
nsCOMPtr<nsIDOMNode> leftNodeToJoin = do_QueryInterface(aLeftNode);
nsCOMPtr<nsIDOMNode> rightNodeToJoin = do_QueryInterface(aRightNode);
nsCOMPtr<nsIDOMNode> parentNode,tmp;
nsresult res = NS_OK;
rightNodeToJoin->GetParentNode(getter_AddRefs(parentNode));
while (leftNodeToJoin && rightNodeToJoin && parentNode &&
NodesSameType(leftNodeToJoin, rightNodeToJoin))
{
// adjust out params
PRUint32 length;
if (IsTextNode(leftNodeToJoin))
{
nsCOMPtr<nsIDOMCharacterData>nodeAsText;
nodeAsText = do_QueryInterface(leftNodeToJoin);
nodeAsText->GetLength(&length);
}
else
{
res = GetLengthOfDOMNode(leftNodeToJoin, length);
NS_ENSURE_SUCCESS(res, res);
}
*aOutJoinNode = rightNodeToJoin;
*outOffset = length;
// do the join
res = JoinNodes(leftNodeToJoin, rightNodeToJoin, parentNode);
NS_ENSURE_SUCCESS(res, res);
if (IsTextNode(parentNode)) // we've joined all the way down to text nodes, we're done!
return NS_OK;
else
{
// get new left and right nodes, and begin anew
parentNode = rightNodeToJoin;
leftNodeToJoin = GetChildAt(parentNode, length-1);
rightNodeToJoin = GetChildAt(parentNode, length);
// skip over non-editable nodes
while (leftNodeToJoin && !IsEditable(leftNodeToJoin))
{
leftNodeToJoin->GetPreviousSibling(getter_AddRefs(tmp));
leftNodeToJoin = tmp;
}
if (!leftNodeToJoin) break;
while (rightNodeToJoin && !IsEditable(rightNodeToJoin))
{
rightNodeToJoin->GetNextSibling(getter_AddRefs(tmp));
rightNodeToJoin = tmp;
}
if (!rightNodeToJoin) break;
}
}
return res;
}
nsresult nsEditor::BeginUpdateViewBatch()
{
NS_PRECONDITION(mUpdateCount >= 0, "bad state");
if (0 == mUpdateCount)
{
// Turn off selection updates and notifications.
nsCOMPtr<nsISelection> selection;
GetSelection(getter_AddRefs(selection));
if (selection)
{
nsCOMPtr<nsISelectionPrivate> selPrivate(do_QueryInterface(selection));
selPrivate->StartBatchChanges();
}
// Turn off view updating.
nsCOMPtr<nsIPresShell> ps = GetPresShell();
if (ps) {
nsCOMPtr<nsIViewManager> viewManager = ps->GetViewManager();
if (viewManager) {
mBatch.BeginUpdateViewBatch(viewManager);
}
}
}
mUpdateCount++;
return NS_OK;
}
nsresult nsEditor::EndUpdateViewBatch()
{
NS_PRECONDITION(mUpdateCount > 0, "bad state");
if (mUpdateCount <= 0)
{
mUpdateCount = 0;
return NS_ERROR_FAILURE;
}
mUpdateCount--;
if (0 == mUpdateCount)
{
// Hide the caret with an StCaretHider. By the time it goes out
// of scope and tries to show the caret, reflow and selection changed
// notifications should've happened so the caret should have enough info
// to draw at the correct position.
nsRefPtr<nsCaret> caret;
nsCOMPtr<nsIPresShell> presShell = GetPresShell();
if (presShell)
caret = presShell->GetCaret();
StCaretHider caretHider(caret);
PRUint32 flags = 0;
GetFlags(&flags);
// Turn view updating back on.
PRUint32 updateFlag = NS_VMREFRESH_IMMEDIATE;
// If we're doing async updates, use NS_VMREFRESH_DEFERRED here, so that
// the reflows we caused will get processed before the invalidates.
if (flags & nsIPlaintextEditor::eEditorUseAsyncUpdatesMask) {
updateFlag = NS_VMREFRESH_DEFERRED;
}
mBatch.EndUpdateViewBatch(updateFlag);
// Turn selection updating and notifications back on.
nsCOMPtr<nsISelection>selection;
GetSelection(getter_AddRefs(selection));
if (selection) {
nsCOMPtr<nsISelectionPrivate>selPrivate(do_QueryInterface(selection));
selPrivate->EndBatchChanges();
}
}
return NS_OK;
}
PRBool
nsEditor::GetShouldTxnSetSelection()
{
return mShouldTxnSetSelection;
}
NS_IMETHODIMP
nsEditor::DeleteSelectionImpl(nsIEditor::EDirection aAction)
{
nsCOMPtr<nsISelection>selection;
nsresult res = GetSelection(getter_AddRefs(selection));
NS_ENSURE_SUCCESS(res, res);
nsRefPtr<EditAggregateTxn> txn;
nsCOMPtr<nsIDOMNode> deleteNode;
PRInt32 deleteCharOffset = 0, deleteCharLength = 0;
res = CreateTxnForDeleteSelection(aAction, getter_AddRefs(txn),
getter_AddRefs(deleteNode),
&deleteCharOffset, &deleteCharLength);
nsCOMPtr<nsIDOMCharacterData> deleteCharData(do_QueryInterface(deleteNode));
if (NS_SUCCEEDED(res))
{
nsAutoRules beginRulesSniffing(this, kOpDeleteSelection, aAction);
PRInt32 i;
// Notify nsIEditActionListener::WillDelete[Selection|Text|Node]
if (!deleteNode)
for (i = 0; i < mActionListeners.Count(); i++)
mActionListeners[i]->WillDeleteSelection(selection);
else if (deleteCharData)
for (i = 0; i < mActionListeners.Count(); i++)
mActionListeners[i]->WillDeleteText(deleteCharData, deleteCharOffset, 1);
else
for (i = 0; i < mActionListeners.Count(); i++)
mActionListeners[i]->WillDeleteNode(deleteNode);
// Delete the specified amount
res = DoTransaction(txn);
// Notify nsIEditActionListener::DidDelete[Selection|Text|Node]
if (!deleteNode)
for (i = 0; i < mActionListeners.Count(); i++)
mActionListeners[i]->DidDeleteSelection(selection);
else if (deleteCharData)
for (i = 0; i < mActionListeners.Count(); i++)
mActionListeners[i]->DidDeleteText(deleteCharData, deleteCharOffset, 1, res);
else
for (i = 0; i < mActionListeners.Count(); i++)
mActionListeners[i]->DidDeleteNode(deleteNode, res);
}
return res;
}
// XXX: error handling in this routine needs to be cleaned up!
NS_IMETHODIMP
nsEditor::DeleteSelectionAndCreateNode(const nsAString& aTag,
nsIDOMNode ** aNewNode)
{
nsCOMPtr<nsIDOMNode> parentSelectedNode;
PRInt32 offsetOfNewNode;
nsresult result = DeleteSelectionAndPrepareToCreateNode(parentSelectedNode,
offsetOfNewNode);
NS_ENSURE_SUCCESS(result, result);
nsCOMPtr<nsIDOMNode> newNode;
result = CreateNode(aTag, parentSelectedNode, offsetOfNewNode,
getter_AddRefs(newNode));
// XXX: ERROR_HANDLING check result, and make sure aNewNode is set correctly in success/failure cases
*aNewNode = newNode;
NS_IF_ADDREF(*aNewNode);
// we want the selection to be just after the new node
nsCOMPtr<nsISelection> selection;
result = GetSelection(getter_AddRefs(selection));
NS_ENSURE_SUCCESS(result, result);
NS_ENSURE_TRUE(selection, NS_ERROR_NULL_POINTER);
return selection->Collapse(parentSelectedNode, offsetOfNewNode+1);
}
/* Non-interface, protected methods */
nsresult
nsEditor::GetIMEBufferLength(PRInt32* length)
{
*length = mIMEBufferLength;
return NS_OK;
}
void
nsEditor::SetIsIMEComposing(){
// We set mIsIMEComposing according to mIMETextRangeList.
nsCOMPtr<nsIPrivateTextRange> rangePtr;
PRUint16 listlen, type;
mIsIMEComposing = PR_FALSE;
listlen = mIMETextRangeList->GetLength();
for (PRUint16 i = 0; i < listlen; i++)
{
rangePtr = mIMETextRangeList->Item(i);
if (!rangePtr) continue;
nsresult result = rangePtr->GetRangeType(&type);
if (NS_FAILED(result)) continue;
if ( type == nsIPrivateTextRange::TEXTRANGE_RAWINPUT ||
type == nsIPrivateTextRange::TEXTRANGE_CONVERTEDTEXT ||
type == nsIPrivateTextRange::TEXTRANGE_SELECTEDRAWTEXT ||
type == nsIPrivateTextRange::TEXTRANGE_SELECTEDCONVERTEDTEXT )
{
mIsIMEComposing = PR_TRUE;
#ifdef DEBUG_IME
printf("nsEditor::mIsIMEComposing = PR_TRUE\n");
#endif
break;
}
}
return;
}
PRBool
nsEditor::IsIMEComposing() {
return mIsIMEComposing;
}
NS_IMETHODIMP
nsEditor::DeleteSelectionAndPrepareToCreateNode(nsCOMPtr<nsIDOMNode> &parentSelectedNode, PRInt32& offsetOfNewNode)
{
nsresult result=NS_ERROR_NOT_INITIALIZED;
nsCOMPtr<nsISelection> selection;
result = GetSelection(getter_AddRefs(selection));
NS_ENSURE_SUCCESS(result, result);
NS_ENSURE_TRUE(selection, NS_ERROR_NULL_POINTER);
PRBool collapsed;
result = selection->GetIsCollapsed(&collapsed);
if (NS_SUCCEEDED(result) && !collapsed)
{
result = DeleteSelection(nsIEditor::eNone);
if (NS_FAILED(result)) {
return result;
}
// get the new selection
result = GetSelection(getter_AddRefs(selection));
if (NS_FAILED(result)) {
return result;
}
nsCOMPtr<nsIDOMNode> selectedNode;
selection->GetAnchorNode(getter_AddRefs(selectedNode));
// no selection is ok.
// if there is a selection, it must be collapsed
if (selectedNode)
{
PRBool testCollapsed = PR_FALSE;
selection->GetIsCollapsed(&testCollapsed);
if (!testCollapsed) {
result = selection->CollapseToEnd();
NS_ENSURE_SUCCESS(result, result);
}
}
}
// split the selected node
PRInt32 offsetOfSelectedNode;
result = selection->GetAnchorNode(getter_AddRefs(parentSelectedNode));
if (NS_SUCCEEDED(result) && NS_SUCCEEDED(selection->GetAnchorOffset(&offsetOfSelectedNode)) && parentSelectedNode)
{
nsCOMPtr<nsIDOMNode> selectedNode;
PRUint32 selectedNodeContentCount=0;
nsCOMPtr<nsIDOMCharacterData>selectedParentNodeAsText;
selectedParentNodeAsText = do_QueryInterface(parentSelectedNode);
offsetOfNewNode = offsetOfSelectedNode;
/* if the selection is a text node, split the text node if necessary
and compute where to put the new node
*/
if (selectedParentNodeAsText)
{
PRInt32 indexOfTextNodeInParent;
selectedNode = do_QueryInterface(parentSelectedNode);
selectedNode->GetParentNode(getter_AddRefs(parentSelectedNode));
selectedParentNodeAsText->GetLength(&selectedNodeContentCount);
GetChildOffset(selectedNode, parentSelectedNode, indexOfTextNodeInParent);
if ((offsetOfSelectedNode!=0) && (((PRUint32)offsetOfSelectedNode)!=selectedNodeContentCount))
{
nsCOMPtr<nsIDOMNode> newSiblingNode;
result = SplitNode(selectedNode, offsetOfSelectedNode, getter_AddRefs(newSiblingNode));
// now get the node's offset in it's parent, and insert the new tag there
if (NS_SUCCEEDED(result)) {
result = GetChildOffset(selectedNode, parentSelectedNode, offsetOfNewNode);
}
}
else
{ // determine where to insert the new node
if (0==offsetOfSelectedNode) {
offsetOfNewNode = indexOfTextNodeInParent; // insert new node as previous sibling to selection parent
}
else { // insert new node as last child
GetChildOffset(selectedNode, parentSelectedNode, offsetOfNewNode);
offsetOfNewNode++; // offsets are 0-based, and we need the index of the new node
}
}
}
// Here's where the new node was inserted
}
#ifdef DEBUG
else {
printf("InsertLineBreak into an empty document is not yet supported\n");
}
#endif
return result;
}
NS_IMETHODIMP
nsEditor::DoAfterDoTransaction(nsITransaction *aTxn)
{
nsresult rv = NS_OK;
PRBool isTransientTransaction;
rv = aTxn->GetIsTransient(&isTransientTransaction);
NS_ENSURE_SUCCESS(rv, rv);
if (!isTransientTransaction)
{
// we need to deal here with the case where the user saved after some
// edits, then undid one or more times. Then, the undo count is -ve,
// but we can't let a do take it back to zero. So we flip it up to
// a +ve number.
PRInt32 modCount;
GetModificationCount(&modCount);
if (modCount < 0)
modCount = -modCount;
rv = IncrementModificationCount(1); // don't count transient transactions
}
return rv;
}
NS_IMETHODIMP
nsEditor::DoAfterUndoTransaction()
{
nsresult rv = NS_OK;
rv = IncrementModificationCount(-1); // all undoable transactions are non-transient
return rv;
}
NS_IMETHODIMP
nsEditor::DoAfterRedoTransaction()
{
return IncrementModificationCount(1); // all redoable transactions are non-transient
}
NS_IMETHODIMP
nsEditor::CreateTxnForSetAttribute(nsIDOMElement *aElement,
const nsAString& aAttribute,
const nsAString& aValue,
ChangeAttributeTxn ** aTxn)
{
NS_ENSURE_TRUE(aElement, NS_ERROR_NULL_POINTER);
nsRefPtr<ChangeAttributeTxn> txn = new ChangeAttributeTxn();
nsresult rv = txn->Init(this, aElement, aAttribute, aValue, PR_FALSE);
if (NS_SUCCEEDED(rv))
{
txn.forget(aTxn);
}
return rv;
}
NS_IMETHODIMP
nsEditor::CreateTxnForRemoveAttribute(nsIDOMElement *aElement,
const nsAString& aAttribute,
ChangeAttributeTxn ** aTxn)
{
NS_ENSURE_TRUE(aElement, NS_ERROR_NULL_POINTER);
nsRefPtr<ChangeAttributeTxn> txn = new ChangeAttributeTxn();
nsresult rv = txn->Init(this, aElement, aAttribute, EmptyString(), PR_TRUE);
if (NS_SUCCEEDED(rv))
{
txn.forget(aTxn);
}
return rv;
}
NS_IMETHODIMP nsEditor::CreateTxnForCreateElement(const nsAString& aTag,
nsIDOMNode *aParent,
PRInt32 aPosition,
CreateElementTxn ** aTxn)
{
NS_ENSURE_TRUE(aParent, NS_ERROR_NULL_POINTER);
nsRefPtr<CreateElementTxn> txn = new CreateElementTxn();
nsresult rv = txn->Init(this, aTag, aParent, aPosition);
if (NS_SUCCEEDED(rv))
{
txn.forget(aTxn);
}
return rv;
}
NS_IMETHODIMP nsEditor::CreateTxnForInsertElement(nsIDOMNode * aNode,
nsIDOMNode * aParent,
PRInt32 aPosition,
InsertElementTxn ** aTxn)
{
NS_ENSURE_TRUE(aNode && aParent, NS_ERROR_NULL_POINTER);
nsRefPtr<InsertElementTxn> txn = new InsertElementTxn();
nsresult rv = txn->Init(aNode, aParent, aPosition, this);
if (NS_SUCCEEDED(rv))
{
txn.forget(aTxn);
}
return rv;
}
NS_IMETHODIMP nsEditor::CreateTxnForDeleteElement(nsIDOMNode * aElement,
DeleteElementTxn ** aTxn)
{
NS_ENSURE_TRUE(aElement, NS_ERROR_NULL_POINTER);
nsRefPtr<DeleteElementTxn> txn = new DeleteElementTxn();
nsresult rv = txn->Init(this, aElement, &mRangeUpdater);
if (NS_SUCCEEDED(rv))
{
txn.forget(aTxn);
}
return rv;
}
NS_IMETHODIMP
nsEditor::CreateTxnForIMEText(const nsAString& aStringToInsert,
IMETextTxn ** aTxn)
{
NS_ASSERTION(aTxn, "illegal value- null ptr- aTxn");
nsRefPtr<IMETextTxn> txn = new IMETextTxn();
nsresult rv = txn->Init(mIMETextNode, mIMETextOffset, mIMEBufferLength,
mIMETextRangeList, aStringToInsert, this);
if (NS_SUCCEEDED(rv))
{
txn.forget(aTxn);
}
return rv;
}
NS_IMETHODIMP
nsEditor::CreateTxnForAddStyleSheet(nsCSSStyleSheet* aSheet, AddStyleSheetTxn* *aTxn)
{
nsRefPtr<AddStyleSheetTxn> txn = new AddStyleSheetTxn();
nsresult rv = txn->Init(this, aSheet);
if (NS_SUCCEEDED(rv))
{
txn.forget(aTxn);
}
return rv;
}
NS_IMETHODIMP
nsEditor::CreateTxnForRemoveStyleSheet(nsCSSStyleSheet* aSheet, RemoveStyleSheetTxn* *aTxn)
{
nsRefPtr<RemoveStyleSheetTxn> txn = new RemoveStyleSheetTxn();
nsresult rv = txn->Init(this, aSheet);
if (NS_SUCCEEDED(rv))
{
txn.forget(aTxn);
}
return rv;
}
NS_IMETHODIMP
nsEditor::CreateTxnForDeleteSelection(nsIEditor::EDirection aAction,
EditAggregateTxn ** aTxn,
nsIDOMNode ** aNode,
PRInt32 *aOffset,
PRInt32 *aLength)
{
NS_ENSURE_TRUE(aTxn, NS_ERROR_NULL_POINTER);
*aTxn = nsnull;
nsRefPtr<EditAggregateTxn> aggTxn;
nsCOMPtr<nsISelectionController> selCon;
GetSelectionController(getter_AddRefs(selCon));
NS_ENSURE_TRUE(selCon, NS_ERROR_NOT_INITIALIZED);
nsCOMPtr<nsISelection> selection;
nsresult result = selCon->GetSelection(nsISelectionController::SELECTION_NORMAL,
getter_AddRefs(selection));
if ((NS_SUCCEEDED(result)) && selection)
{
// Check whether the selection is collapsed and we should do nothing:
PRBool isCollapsed;
result = (selection->GetIsCollapsed(&isCollapsed));
if (NS_SUCCEEDED(result) && isCollapsed && aAction == eNone)
return NS_OK;
// allocate the out-param transaction
aggTxn = new EditAggregateTxn();
nsCOMPtr<nsISelectionPrivate>selPrivate(do_QueryInterface(selection));
nsCOMPtr<nsIEnumerator> enumerator;
result = selPrivate->GetEnumerator(getter_AddRefs(enumerator));
if (NS_SUCCEEDED(result) && enumerator)
{
for (enumerator->First(); NS_OK!=enumerator->IsDone(); enumerator->Next())
{
nsCOMPtr<nsISupports> currentItem;
result = enumerator->CurrentItem(getter_AddRefs(currentItem));
if ((NS_SUCCEEDED(result)) && (currentItem))
{
nsCOMPtr<nsIDOMRange> range( do_QueryInterface(currentItem) );
range->GetCollapsed(&isCollapsed);
if (!isCollapsed)
{
nsRefPtr<DeleteRangeTxn> txn = new DeleteRangeTxn();
if (txn)
{
txn->Init(this, range, &mRangeUpdater);
aggTxn->AppendChild(txn);
}
else
result = NS_ERROR_OUT_OF_MEMORY;
}
// Same with range as with selection; if it is collapsed and action
// is eNone, do nothing.
else if (aAction != eNone)
{ // we have an insertion point. delete the thing in front of it or behind it, depending on aAction
result = CreateTxnForDeleteInsertionPoint(range, aAction, aggTxn, aNode, aOffset, aLength);
}
}
}
}
}
// Only set the outparam if building the txn was a success, otherwise
// we let the aggregation txn be destroyed when the refptr goes out of scope
if (NS_SUCCEEDED(result))
{
aggTxn.forget(aTxn);
}
return result;
}
nsresult
nsEditor::CreateTxnForDeleteCharacter(nsIDOMCharacterData *aData,
PRUint32 aOffset,
nsIEditor::EDirection aDirection,
DeleteTextTxn **aTxn)
{
NS_ASSERTION(aDirection == eNext || aDirection == ePrevious,
"invalid direction");
nsAutoString data;
aData->GetData(data);
PRUint32 segOffset = aOffset, segLength = 1;
if (aDirection == eNext) {
if (segOffset + 1 < data.Length() &&
NS_IS_HIGH_SURROGATE(data[segOffset]) &&
NS_IS_LOW_SURROGATE(data[segOffset+1])) {
// delete both halves of the surrogate pair
++segLength;
}
} else if (aOffset > 0) {
--segOffset;
if (segOffset > 0 &&
NS_IS_LOW_SURROGATE(data[segOffset]) &&
NS_IS_HIGH_SURROGATE(data[segOffset-1])) {
++segLength;
--segOffset;
}
} else {
return NS_ERROR_FAILURE;
}
return CreateTxnForDeleteText(aData, segOffset, segLength, aTxn);
}
//XXX: currently, this doesn't handle edge conditions because GetNext/GetPrior are not implemented
NS_IMETHODIMP
nsEditor::CreateTxnForDeleteInsertionPoint(nsIDOMRange *aRange,
nsIEditor::EDirection aAction,
EditAggregateTxn *aTxn,
nsIDOMNode **aNode,
PRInt32 *aOffset,
PRInt32 *aLength)
{
NS_ASSERTION(aAction != eNone, "invalid action");
// get the node and offset of the insertion point
nsCOMPtr<nsIDOMNode> node;
nsresult result = aRange->GetStartContainer(getter_AddRefs(node));
NS_ENSURE_SUCCESS(result, result);
PRInt32 offset;
result = aRange->GetStartOffset(&offset);
NS_ENSURE_SUCCESS(result, result);
// determine if the insertion point is at the beginning, middle, or end of the node
nsCOMPtr<nsIDOMCharacterData> nodeAsText = do_QueryInterface(node);
PRUint32 count=0;
if (nodeAsText)
nodeAsText->GetLength(&count);
else
{
// get the child list and count
nsCOMPtr<nsIDOMNodeList>childList;
result = node->GetChildNodes(getter_AddRefs(childList));
if ((NS_SUCCEEDED(result)) && childList)
childList->GetLength(&count);
}
PRBool isFirst = (0 == offset);
PRBool isLast = (count == (PRUint32)offset);
// XXX: if isFirst && isLast, then we'll need to delete the node
// as well as the 1 child
// build a transaction for deleting the appropriate data
// XXX: this has to come from rule section
if ((ePrevious==aAction) && (PR_TRUE==isFirst))
{ // we're backspacing from the beginning of the node. Delete the first thing to our left
nsCOMPtr<nsIDOMNode> priorNode;
result = GetPriorNode(node, PR_TRUE, address_of(priorNode));
if ((NS_SUCCEEDED(result)) && priorNode)
{ // there is a priorNode, so delete it's last child (if text content, delete the last char.)
// if it has no children, delete it
nsCOMPtr<nsIDOMCharacterData> priorNodeAsText = do_QueryInterface(priorNode);
if (priorNodeAsText)
{
PRUint32 length=0;
priorNodeAsText->GetLength(&length);
if (0<length)
{
nsRefPtr<DeleteTextTxn> txn;
result = CreateTxnForDeleteCharacter(priorNodeAsText, length,
ePrevious, getter_AddRefs(txn));
if (NS_SUCCEEDED(result)) {
aTxn->AppendChild(txn);
NS_ADDREF(*aNode = priorNode);
*aOffset = txn->GetOffset();
*aLength = txn->GetNumCharsToDelete();
}
}
else
{ // XXX: can you have an empty text node? If so, what do you do?
printf("ERROR: found a text node with 0 characters\n");
result = NS_ERROR_UNEXPECTED;
}
}
else
{ // priorNode is not text, so tell it's parent to delete it
nsRefPtr<DeleteElementTxn> txn;
result = CreateTxnForDeleteElement(priorNode, getter_AddRefs(txn));
if (NS_SUCCEEDED(result)) {
aTxn->AppendChild(txn);
NS_ADDREF(*aNode = priorNode);
}
}
}
}
else if ((nsIEditor::eNext==aAction) && (PR_TRUE==isLast))
{ // we're deleting from the end of the node. Delete the first thing to our right
nsCOMPtr<nsIDOMNode> nextNode;
result = GetNextNode(node, PR_TRUE, address_of(nextNode));
if ((NS_SUCCEEDED(result)) && nextNode)
{ // there is a nextNode, so delete it's first child (if text content, delete the first char.)
// if it has no children, delete it
nsCOMPtr<nsIDOMCharacterData> nextNodeAsText = do_QueryInterface(nextNode);
if (nextNodeAsText)
{
PRUint32 length=0;
nextNodeAsText->GetLength(&length);
if (0<length)
{
nsRefPtr<DeleteTextTxn> txn;
result = CreateTxnForDeleteCharacter(nextNodeAsText, 0, eNext,
getter_AddRefs(txn));
if (NS_SUCCEEDED(result)) {
aTxn->AppendChild(txn);
NS_ADDREF(*aNode = nextNode);
*aOffset = txn->GetOffset();
*aLength = txn->GetNumCharsToDelete();
}
}
else
{ // XXX: can you have an empty text node? If so, what do you do?
printf("ERROR: found a text node with 0 characters\n");
result = NS_ERROR_UNEXPECTED;
}
}
else
{ // nextNode is not text, so tell it's parent to delete it
nsRefPtr<DeleteElementTxn> txn;
result = CreateTxnForDeleteElement(nextNode, getter_AddRefs(txn));
if (NS_SUCCEEDED(result)) {
aTxn->AppendChild(txn);
NS_ADDREF(*aNode = nextNode);
}
}
}
}
else
{
if (nodeAsText)
{ // we have text, so delete a char at the proper offset
nsRefPtr<DeleteTextTxn> txn;
result = CreateTxnForDeleteCharacter(nodeAsText, offset, aAction,
getter_AddRefs(txn));
if (NS_SUCCEEDED(result)) {
aTxn->AppendChild(txn);
NS_ADDREF(*aNode = node);
*aOffset = txn->GetOffset();
*aLength = txn->GetNumCharsToDelete();
}
}
else
{ // we're either deleting a node or some text, need to dig into the next/prev node to find out
nsCOMPtr<nsIDOMNode> selectedNode;
if (ePrevious==aAction)
{
result = GetPriorNode(node, offset, PR_TRUE, address_of(selectedNode));
}
else if (eNext==aAction)
{
result = GetNextNode(node, offset, PR_TRUE, address_of(selectedNode));
}
if (NS_FAILED(result)) { return result; }
if (selectedNode)
{
nsCOMPtr<nsIDOMCharacterData> selectedNodeAsText =
do_QueryInterface(selectedNode);
if (selectedNodeAsText)
{ // we are deleting from a text node, so do a text deletion
PRUint32 position = 0; // default for forward delete
if (ePrevious==aAction)
{
selectedNodeAsText->GetLength(&position);
}
nsRefPtr<DeleteTextTxn> delTextTxn;
result = CreateTxnForDeleteCharacter(selectedNodeAsText, position,
aAction,
getter_AddRefs(delTextTxn));
if (NS_FAILED(result)) { return result; }
if (!delTextTxn) { return NS_ERROR_NULL_POINTER; }
aTxn->AppendChild(delTextTxn);
NS_ADDREF(*aNode = selectedNode);
*aOffset = delTextTxn->GetOffset();
*aLength = delTextTxn->GetNumCharsToDelete();
}
else
{
nsRefPtr<DeleteElementTxn> delElementTxn;
result = CreateTxnForDeleteElement(selectedNode,
getter_AddRefs(delElementTxn));
if (NS_FAILED(result)) { return result; }
if (!delElementTxn) { return NS_ERROR_NULL_POINTER; }
aTxn->AppendChild(delElementTxn);
NS_ADDREF(*aNode = selectedNode);
}
}
}
}
return result;
}
nsresult
nsEditor::CreateRange(nsIDOMNode *aStartParent, PRInt32 aStartOffset,
nsIDOMNode *aEndParent, PRInt32 aEndOffset,
nsIDOMRange **aRange)
{
nsresult result;
result = CallCreateInstance("@mozilla.org/content/range;1", aRange);
NS_ENSURE_SUCCESS(result, result);
NS_ENSURE_TRUE(*aRange, NS_ERROR_NULL_POINTER);
result = (*aRange)->SetStart(aStartParent, aStartOffset);
if (NS_SUCCEEDED(result))
result = (*aRange)->SetEnd(aEndParent, aEndOffset);
if (NS_FAILED(result))
{
NS_RELEASE((*aRange));
*aRange = 0;
}
return result;
}
nsresult
nsEditor::AppendNodeToSelectionAsRange(nsIDOMNode *aNode)
{
NS_ENSURE_TRUE(aNode, NS_ERROR_NULL_POINTER);
nsCOMPtr<nsISelection> selection;
nsresult res = GetSelection(getter_AddRefs(selection));
NS_ENSURE_SUCCESS(res, res);
if(!selection) return NS_ERROR_FAILURE;
nsCOMPtr<nsIDOMNode> parentNode;
res = aNode->GetParentNode(getter_AddRefs(parentNode));
NS_ENSURE_SUCCESS(res, res);
NS_ENSURE_TRUE(parentNode, NS_ERROR_NULL_POINTER);
PRInt32 offset;
res = GetChildOffset(aNode, parentNode, offset);
NS_ENSURE_SUCCESS(res, res);
nsCOMPtr<nsIDOMRange> range;
res = CreateRange(parentNode, offset, parentNode, offset+1, getter_AddRefs(range));
NS_ENSURE_SUCCESS(res, res);
NS_ENSURE_TRUE(range, NS_ERROR_NULL_POINTER);
return selection->AddRange(range);
}
nsresult nsEditor::ClearSelection()
{
nsCOMPtr<nsISelection> selection;
nsresult res = nsEditor::GetSelection(getter_AddRefs(selection));
NS_ENSURE_SUCCESS(res, res);
NS_ENSURE_TRUE(selection, NS_ERROR_FAILURE);
return selection->RemoveAllRanges();
}
nsresult
nsEditor::CreateHTMLContent(const nsAString& aTag, nsIContent** aContent)
{
nsCOMPtr<nsIDOMDocument> tempDoc;
GetDocument(getter_AddRefs(tempDoc));
nsCOMPtr<nsIDocument> doc = do_QueryInterface(tempDoc);
NS_ENSURE_TRUE(doc, NS_ERROR_FAILURE);
// XXX Wallpaper over editor bug (editor tries to create elements with an
// empty nodename).
if (aTag.IsEmpty()) {
NS_ERROR("Don't pass an empty tag to nsEditor::CreateHTMLContent, "
"check caller.");
return NS_ERROR_FAILURE;
}
return doc->CreateElem(aTag, nsnull, kNameSpaceID_XHTML, PR_FALSE, aContent);
}
nsresult
nsEditor::SetAttributeOrEquivalent(nsIDOMElement * aElement,
const nsAString & aAttribute,
const nsAString & aValue,
PRBool aSuppressTransaction)
{
return SetAttribute(aElement, aAttribute, aValue);
}
nsresult
nsEditor::RemoveAttributeOrEquivalent(nsIDOMElement * aElement,
const nsAString & aAttribute,
PRBool aSuppressTransaction)
{
return RemoveAttribute(aElement, aAttribute);
}
nsresult
nsEditor::HandleKeyPressEvent(nsIDOMKeyEvent* aKeyEvent)
{
// NOTE: When you change this method, you should also change:
// * editor/libeditor/text/tests/test_texteditor_keyevent_handling.html
// * editor/libeditor/html/tests/test_htmleditor_keyevent_handling.html
//
// And also when you add new key handling, you need to change the subclass's
// HandleKeyPressEvent()'s switch statement.
nsKeyEvent* nativeKeyEvent = GetNativeKeyEvent(aKeyEvent);
NS_ENSURE_TRUE(nativeKeyEvent, NS_ERROR_UNEXPECTED);
NS_ASSERTION(nativeKeyEvent->message == NS_KEY_PRESS,
"HandleKeyPressEvent gets non-keypress event");
// if we are readonly or disabled, then do nothing.
if (IsReadonly() || IsDisabled()) {
// consume backspace for disabled and readonly textfields, to prevent
// back in history, which could be confusing to users
if (nativeKeyEvent->keyCode == nsIDOMKeyEvent::DOM_VK_BACK_SPACE) {
aKeyEvent->PreventDefault();
}
return NS_OK;
}
switch (nativeKeyEvent->keyCode) {
case nsIDOMKeyEvent::DOM_VK_META:
case nsIDOMKeyEvent::DOM_VK_SHIFT:
case nsIDOMKeyEvent::DOM_VK_CONTROL:
case nsIDOMKeyEvent::DOM_VK_ALT:
aKeyEvent->PreventDefault(); // consumed
return NS_OK;
case nsIDOMKeyEvent::DOM_VK_BACK_SPACE:
if (nativeKeyEvent->isControl || nativeKeyEvent->isAlt ||
nativeKeyEvent->isMeta) {
return NS_OK;
}
DeleteSelection(nsIEditor::ePrevious);
aKeyEvent->PreventDefault(); // consumed
return NS_OK;
case nsIDOMKeyEvent::DOM_VK_DELETE:
// on certain platforms (such as windows) the shift key
// modifies what delete does (cmd_cut in this case).
// bailing here to allow the keybindings to do the cut.
if (nativeKeyEvent->isShift || nativeKeyEvent->isControl ||
nativeKeyEvent->isAlt || nativeKeyEvent->isMeta) {
return NS_OK;
}
DeleteSelection(nsIEditor::eNext);
aKeyEvent->PreventDefault(); // consumed
return NS_OK;
}
return NS_OK;
}
nsresult
nsEditor::HandleInlineSpellCheck(PRInt32 action,
nsISelection *aSelection,
nsIDOMNode *previousSelectedNode,
PRInt32 previousSelectedOffset,
nsIDOMNode *aStartNode,
PRInt32 aStartOffset,
nsIDOMNode *aEndNode,
PRInt32 aEndOffset)
{
return mInlineSpellChecker ? mInlineSpellChecker->SpellCheckAfterEditorChange(action,
aSelection,
previousSelectedNode,
previousSelectedOffset,
aStartNode,
aStartOffset,
aEndNode,
aEndOffset) : NS_OK;
}
already_AddRefed<nsIContent>
nsEditor::FindSelectionRoot(nsINode *aNode)
{
nsCOMPtr<nsIContent> rootContent = do_QueryInterface(GetRoot());
return rootContent.forget();
}
nsresult
nsEditor::InitializeSelection(nsIDOMEventTarget* aFocusEventTarget)
{
nsCOMPtr<nsINode> targetNode = do_QueryInterface(aFocusEventTarget);
NS_ENSURE_TRUE(targetNode, NS_ERROR_INVALID_ARG);
nsCOMPtr<nsIContent> selectionRootContent = FindSelectionRoot(targetNode);
if (!selectionRootContent) {
return NS_OK;
}
nsCOMPtr<nsIDocument> targetDoc = do_QueryInterface(aFocusEventTarget);
PRBool isTargetDoc =
targetNode->IsNodeOfType(nsINode::eDOCUMENT) &&
targetNode->HasFlag(NODE_IS_EDITABLE);
nsCOMPtr<nsISelection> selection;
nsresult rv = GetSelection(getter_AddRefs(selection));
NS_ENSURE_SUCCESS(rv, rv);
nsCOMPtr<nsIPresShell> presShell = GetPresShell();
NS_ENSURE_TRUE(presShell, NS_ERROR_NOT_INITIALIZED);
nsCOMPtr<nsISelectionController> selCon;
rv = GetSelectionController(getter_AddRefs(selCon));
NS_ENSURE_SUCCESS(rv, rv);
nsCOMPtr<nsISelectionPrivate> selectionPrivate =
do_QueryInterface(selection);
NS_ENSURE_TRUE(selectionPrivate, NS_ERROR_UNEXPECTED);
// Init the caret
nsRefPtr<nsCaret> caret = presShell->GetCaret();
NS_ENSURE_TRUE(caret, NS_ERROR_UNEXPECTED);
caret->SetIgnoreUserModify(PR_FALSE);
caret->SetCaretDOMSelection(selection);
selCon->SetCaretReadOnly(IsReadonly());
selCon->SetCaretEnabled(PR_TRUE);
// Init selection
selCon->SetDisplaySelection(nsISelectionController::SELECTION_ON);
selCon->RepaintSelection(nsISelectionController::SELECTION_NORMAL);
// If the computed selection root isn't root content, we should set it
// as selection ancestor limit. However, if that is root element, it means
// there is not limitation of the selection, then, we must set NULL.
// NOTE: If we set a root element to the ancestor limit, some selection
// methods don't work fine.
if (selectionRootContent->GetParent()) {
selectionPrivate->SetAncestorLimiter(selectionRootContent);
} else {
selectionPrivate->SetAncestorLimiter(nsnull);
}
// XXX What case needs this?
if (isTargetDoc) {
PRInt32 rangeCount;
selection->GetRangeCount(&rangeCount);
if (rangeCount == 0) {
BeginningOfDocument();
}
}
return NS_OK;
}
nsIDOMElement *
nsEditor::GetRoot()
{
if (!mRootElement)
{
nsCOMPtr<nsIDOMElement> root;
// Let GetRootElement() do the work
GetRootElement(getter_AddRefs(root));
}
return mRootElement;
}
NS_IMETHODIMP
nsEditor::SwitchTextDirection()
{
// Get the current root direction from its frame
nsIDOMElement *rootElement = GetRoot();
nsresult rv;
// If we don't have an explicit direction, determine our direction
// from the content's direction
if (!(mFlags & (nsIPlaintextEditor::eEditorLeftToRight |
nsIPlaintextEditor::eEditorRightToLeft))) {
nsCOMPtr<nsIContent> content = do_QueryInterface(rootElement, &rv);
NS_ENSURE_SUCCESS(rv, rv);
nsIFrame* frame = content->GetPrimaryFrame();
NS_ENSURE_TRUE(frame, NS_ERROR_FAILURE);
// Set the flag here, to enable us to use the same code path below.
// It will be flipped before returning from the function.
if (frame->GetStyleVisibility()->mDirection == NS_STYLE_DIRECTION_RTL) {
mFlags |= nsIPlaintextEditor::eEditorRightToLeft;
} else {
mFlags |= nsIPlaintextEditor::eEditorLeftToRight;
}
}
// Apply the opposite direction
if (mFlags & nsIPlaintextEditor::eEditorRightToLeft) {
NS_ASSERTION(!(mFlags & nsIPlaintextEditor::eEditorLeftToRight),
"Unexpected mutually exclusive flag");
mFlags &= ~nsIPlaintextEditor::eEditorRightToLeft;
mFlags |= nsIPlaintextEditor::eEditorLeftToRight;
rv = rootElement->SetAttribute(NS_LITERAL_STRING("dir"), NS_LITERAL_STRING("ltr"));
} else if (mFlags & nsIPlaintextEditor::eEditorLeftToRight) {
NS_ASSERTION(!(mFlags & nsIPlaintextEditor::eEditorRightToLeft),
"Unexpected mutually exclusive flag");
mFlags |= nsIPlaintextEditor::eEditorRightToLeft;
mFlags &= ~nsIPlaintextEditor::eEditorLeftToRight;
rv = rootElement->SetAttribute(NS_LITERAL_STRING("dir"), NS_LITERAL_STRING("rtl"));
}
return rv;
}
#if DEBUG_JOE
void
nsEditor::DumpNode(nsIDOMNode *aNode, PRInt32 indent)
{
PRInt32 i;
for (i=0; i<indent; i++)
printf(" ");
nsCOMPtr<nsIDOMElement> element = do_QueryInterface(aNode);
nsCOMPtr<nsIDOMDocumentFragment> docfrag = do_QueryInterface(aNode);
if (element || docfrag)
{
if (element)
{
nsAutoString tag;
element->GetTagName(tag);
printf("<%s>\n", NS_LossyConvertUTF16toASCII(tag).get());
}
else
{
printf("<document fragment>\n");
}
nsCOMPtr<nsIDOMNodeList> childList;
aNode->GetChildNodes(getter_AddRefs(childList));
NS_ENSURE_TRUE(childList, NS_ERROR_NULL_POINTER);
PRUint32 numChildren;
childList->GetLength(&numChildren);
nsCOMPtr<nsIDOMNode> child, tmp;
aNode->GetFirstChild(getter_AddRefs(child));
for (i=0; i<numChildren; i++)
{
DumpNode(child, indent+1);
child->GetNextSibling(getter_AddRefs(tmp));
child = tmp;
}
}
else if (IsTextNode(aNode))
{
nsCOMPtr<nsIDOMCharacterData> textNode = do_QueryInterface(aNode);
nsAutoString str;
textNode->GetData(str);
nsCAutoString cstr;
LossyCopyUTF16toASCII(str, cstr);
cstr.ReplaceChar('\n', ' ');
printf("<textnode> %s\n", cstr.get());
}
}
#endif
PRBool
nsEditor::IsModifiableNode(nsIDOMNode *aNode)
{
return PR_TRUE;
}
nsKeyEvent*
nsEditor::GetNativeKeyEvent(nsIDOMKeyEvent* aDOMKeyEvent)
{
nsCOMPtr<nsIPrivateDOMEvent> privDOMEvent = do_QueryInterface(aDOMKeyEvent);
NS_ENSURE_TRUE(privDOMEvent, nsnull);
nsEvent* nativeEvent = privDOMEvent->GetInternalNSEvent();
NS_ENSURE_TRUE(nativeEvent, nsnull);
NS_ENSURE_TRUE(nativeEvent->eventStructType == NS_KEY_EVENT, nsnull);
return static_cast<nsKeyEvent*>(nativeEvent);
}
already_AddRefed<nsIContent>
nsEditor::GetFocusedContent()
{
nsCOMPtr<nsIDOMEventTarget> piTarget = GetDOMEventTarget();
if (!piTarget) {
return nsnull;
}
nsFocusManager* fm = nsFocusManager::GetFocusManager();
NS_ENSURE_TRUE(fm, nsnull);
nsCOMPtr<nsIContent> content = fm->GetFocusedContent();
return SameCOMIdentity(content, piTarget) ? content.forget() : nsnull;
}
PRBool
nsEditor::IsActiveInDOMWindow()
{
nsCOMPtr<nsIDOMEventTarget> piTarget = GetDOMEventTarget();
if (!piTarget) {
return PR_FALSE;
}
nsFocusManager* fm = nsFocusManager::GetFocusManager();
NS_ENSURE_TRUE(fm, PR_FALSE);
nsCOMPtr<nsIDocument> doc = do_QueryReferent(mDocWeak);
nsPIDOMWindow* ourWindow = doc->GetWindow();
nsCOMPtr<nsPIDOMWindow> win;
nsIContent* content =
nsFocusManager::GetFocusedDescendant(ourWindow, PR_FALSE,
getter_AddRefs(win));
return SameCOMIdentity(content, piTarget);
}
PRBool
nsEditor::IsAcceptableInputEvent(nsIDOMEvent* aEvent)
{
// If the event is trusted, the event should always cause input.
nsCOMPtr<nsIDOMNSEvent> NSEvent = do_QueryInterface(aEvent);
NS_ENSURE_TRUE(NSEvent, PR_FALSE);
PRBool isTrusted;
nsresult rv = NSEvent->GetIsTrusted(&isTrusted);
NS_ENSURE_SUCCESS(rv, PR_FALSE);
if (isTrusted) {
return PR_TRUE;
}
// Otherwise, we shouldn't handle any input events when we're not an active
// element of the DOM window.
return IsActiveInDOMWindow();
}
NS_IMETHODIMP
nsEditor::GetLastKeypressEventTrusted(PRBool *aWasTrusted)
{
NS_ENSURE_ARG_POINTER(aWasTrusted);
if (mLastKeypressEventWasTrusted == eTriUnset) {
return NS_ERROR_UNEXPECTED;
}
*aWasTrusted = (mLastKeypressEventWasTrusted == eTriTrue);
return NS_OK;
}
void
nsEditor::BeginKeypressHandling(nsIDOMNSEvent* aEvent)
{
NS_ASSERTION(mLastKeypressEventWasTrusted == eTriUnset, "How come our status is not clear?");
if (aEvent) {
PRBool isTrusted = PR_FALSE;
aEvent->GetIsTrusted(&isTrusted);
mLastKeypressEventWasTrusted = isTrusted ? eTriTrue : eTriFalse;
}
}
Reference in New Issue View Git Blame Copy Permalink