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gecko/layout/forms/nsFileControlFrame.cpp

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/* -*- 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):
* Mats Palmgren <mats.palmgren@bredband.net>
*
* 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 "nsFileControlFrame.h"
#include "nsIContent.h"
#include "prtypes.h"
#include "nsIAtom.h"
#include "nsPresContext.h"
#include "nsGkAtoms.h"
#include "nsWidgetsCID.h"
#include "nsIComponentManager.h"
#include "nsHTMLParts.h"
#include "nsIDOMHTMLInputElement.h"
#include "nsIFormControl.h"
#include "nsINameSpaceManager.h"
#include "nsCOMPtr.h"
#include "nsIDOMElement.h"
#include "nsIDOMDocument.h"
#include "nsIDocument.h"
#include "nsIDOMMouseListener.h"
#include "nsIPresShell.h"
#include "nsIDOMHTMLInputElement.h"
#include "nsXPCOM.h"
#include "nsISupportsPrimitives.h"
#include "nsIComponentManager.h"
#include "nsPIDOMWindow.h"
#include "nsIFilePicker.h"
#include "nsIDOMMouseEvent.h"
#include "nsINodeInfo.h"
#include "nsIDOMEventTarget.h"
#include "nsILocalFile.h"
#include "nsIFileControlElement.h"
#include "nsNodeInfoManager.h"
#include "nsContentCreatorFunctions.h"
#include "nsContentUtils.h"
#include "nsDisplayList.h"
#include "nsIDOMNSUIEvent.h"
#include "nsIDOMEventGroup.h"
#include "nsIDOM3EventTarget.h"
#include "nsIDOMNSHTMLInputElement.h"
#ifdef ACCESSIBILITY
#include "nsIAccessibilityService.h"
#endif
#include "nsIVariant.h"
#include "nsIContentPrefService.h"
#define SYNC_TEXT 0x1
#define SYNC_BUTTON 0x2
#define SYNC_BOTH 0x3
nsIFrame*
NS_NewFileControlFrame(nsIPresShell* aPresShell, nsStyleContext* aContext)
{
return new (aPresShell) nsFileControlFrame(aContext);
}
NS_IMPL_FRAMEARENA_HELPERS(nsFileControlFrame)
nsFileControlFrame::nsFileControlFrame(nsStyleContext* aContext):
nsBlockFrame(aContext),
mTextFrame(nsnull),
mCachedState(nsnull)
{
AddStateBits(NS_BLOCK_FLOAT_MGR);
}
nsFileControlFrame::~nsFileControlFrame()
{
if (mCachedState) {
delete mCachedState;
mCachedState = nsnull;
}
}
NS_IMETHODIMP
nsFileControlFrame::Init(nsIContent* aContent,
nsIFrame* aParent,
nsIFrame* aPrevInFlow)
{
nsresult rv = nsBlockFrame::Init(aContent, aParent, aPrevInFlow);
NS_ENSURE_SUCCESS(rv, rv);
mMouseListener = new MouseListener(this);
NS_ENSURE_TRUE(mMouseListener, NS_ERROR_OUT_OF_MEMORY);
return rv;
}
void
nsFileControlFrame::DestroyFrom(nsIFrame* aDestructRoot)
{
mTextFrame = nsnull;
ENSURE_TRUE(mContent);
// remove mMouseListener as a mouse event listener (bug 40533, bug 355931)
NS_NAMED_LITERAL_STRING(click, "click");
nsCOMPtr<nsIDOMEventGroup> systemGroup;
mContent->GetSystemEventGroup(getter_AddRefs(systemGroup));
nsCOMPtr<nsIDOM3EventTarget> dom3Browse = do_QueryInterface(mBrowse);
if (dom3Browse) {
dom3Browse->RemoveGroupedEventListener(click, mMouseListener, PR_FALSE,
systemGroup);
nsContentUtils::DestroyAnonymousContent(&mBrowse);
}
nsCOMPtr<nsIDOM3EventTarget> dom3TextContent =
do_QueryInterface(mTextContent);
if (dom3TextContent) {
dom3TextContent->RemoveGroupedEventListener(click, mMouseListener, PR_FALSE,
systemGroup);
nsContentUtils::DestroyAnonymousContent(&mTextContent);
}
mMouseListener->ForgetFrame();
nsBlockFrame::DestroyFrom(aDestructRoot);
}
nsresult
nsFileControlFrame::CreateAnonymousContent(nsTArray<nsIContent*>& aElements)
{
// Get the NodeInfoManager and tag necessary to create input elements
nsCOMPtr<nsIDocument> doc = mContent->GetDocument();
nsCOMPtr<nsINodeInfo> nodeInfo;
nodeInfo = doc->NodeInfoManager()->GetNodeInfo(nsGkAtoms::input, nsnull,
kNameSpaceID_XHTML);
// Create the text content
NS_NewHTMLElement(getter_AddRefs(mTextContent), nodeInfo, PR_FALSE);
if (!mTextContent)
return NS_ERROR_OUT_OF_MEMORY;
// Mark the element to be native anonymous before setting any attributes.
mTextContent->SetNativeAnonymous();
mTextContent->SetAttr(kNameSpaceID_None, nsGkAtoms::type,
NS_LITERAL_STRING("text"), PR_FALSE);
nsCOMPtr<nsIDOMHTMLInputElement> textControl = do_QueryInterface(mTextContent);
if (textControl) {
nsCOMPtr<nsIFileControlElement> fileControl = do_QueryInterface(mContent);
if (fileControl) {
// Initialize value when we create the content in case the value was set
// before we got here
nsAutoString value;
fileControl->GetDisplayFileName(value);
textControl->SetValue(value);
}
textControl->SetTabIndex(-1);
textControl->SetReadOnly(PR_TRUE);
}
if (!aElements.AppendElement(mTextContent))
return NS_ERROR_OUT_OF_MEMORY;
NS_NAMED_LITERAL_STRING(click, "click");
nsCOMPtr<nsIDOMEventGroup> systemGroup;
mContent->GetSystemEventGroup(getter_AddRefs(systemGroup));
nsCOMPtr<nsIDOM3EventTarget> dom3TextContent =
do_QueryInterface(mTextContent);
NS_ENSURE_STATE(dom3TextContent);
// Register as an event listener of the textbox
// to open file dialog on mouse click
dom3TextContent->AddGroupedEventListener(click, mMouseListener, PR_FALSE,
systemGroup);
// Create the browse button
NS_NewHTMLElement(getter_AddRefs(mBrowse), nodeInfo, PR_FALSE);
if (!mBrowse)
return NS_ERROR_OUT_OF_MEMORY;
// Mark the element to be native anonymous before setting any attributes.
mBrowse->SetNativeAnonymous();
mBrowse->SetAttr(kNameSpaceID_None, nsGkAtoms::type,
NS_LITERAL_STRING("button"), PR_FALSE);
nsCOMPtr<nsIDOMHTMLInputElement> fileContent = do_QueryInterface(mContent);
nsCOMPtr<nsIDOMHTMLInputElement> browseControl = do_QueryInterface(mBrowse);
if (fileContent && browseControl) {
PRInt32 tabIndex;
nsAutoString accessKey;
fileContent->GetAccessKey(accessKey);
browseControl->SetAccessKey(accessKey);
fileContent->GetTabIndex(&tabIndex);
browseControl->SetTabIndex(tabIndex);
}
if (!aElements.AppendElement(mBrowse))
return NS_ERROR_OUT_OF_MEMORY;
nsCOMPtr<nsIDOM3EventTarget> dom3Browse = do_QueryInterface(mBrowse);
NS_ENSURE_STATE(dom3Browse);
// Register as an event listener of the button
// to open file dialog on mouse click
dom3Browse->AddGroupedEventListener(click, mMouseListener, PR_FALSE,
systemGroup);
SyncAttr(kNameSpaceID_None, nsGkAtoms::size, SYNC_TEXT);
SyncAttr(kNameSpaceID_None, nsGkAtoms::disabled, SYNC_BOTH);
return NS_OK;
}
NS_QUERYFRAME_HEAD(nsFileControlFrame)
NS_QUERYFRAME_ENTRY(nsIAnonymousContentCreator)
NS_QUERYFRAME_ENTRY(nsIFormControlFrame)
NS_QUERYFRAME_TAIL_INHERITING(nsBlockFrame)
void
nsFileControlFrame::SetFocus(PRBool aOn, PRBool aRepaint)
{
}
/**
* This is called when our browse button is clicked
*/
NS_IMETHODIMP
nsFileControlFrame::MouseListener::MouseClick(nsIDOMEvent* aMouseEvent)
{
NS_ASSERTION(mFrame, "We should have been unregistered");
// only allow the left button
nsCOMPtr<nsIDOMMouseEvent> mouseEvent = do_QueryInterface(aMouseEvent);
nsCOMPtr<nsIDOMNSUIEvent> uiEvent = do_QueryInterface(aMouseEvent);
NS_ENSURE_STATE(uiEvent);
PRBool defaultPrevented = PR_FALSE;
uiEvent->GetPreventDefault(&defaultPrevented);
if (defaultPrevented) {
return NS_OK;
}
PRUint16 whichButton;
if (NS_FAILED(mouseEvent->GetButton(&whichButton)) || whichButton != 0) {
return NS_OK;
}
PRInt32 clickCount;
if (NS_FAILED(mouseEvent->GetDetail(&clickCount)) || clickCount > 1) {
return NS_OK;
}
nsresult result;
// Get parent nsIDOMWindowInternal object.
nsIContent* content = mFrame->GetContent();
nsCOMPtr<nsIDOMNSHTMLInputElement> inputElem = do_QueryInterface(content);
nsCOMPtr<nsIFileControlElement> fileControl = do_QueryInterface(content);
if (!content || !inputElem || !fileControl)
return NS_ERROR_FAILURE;
nsCOMPtr<nsIDocument> doc = content->GetDocument();
if (!doc)
return NS_ERROR_FAILURE;
// Get Loc title
nsXPIDLString title;
nsContentUtils::GetLocalizedString(nsContentUtils::eFORMS_PROPERTIES,
"FileUpload", title);
nsCOMPtr<nsIFilePicker> filePicker = do_CreateInstance("@mozilla.org/filepicker;1");
if (!filePicker)
return NS_ERROR_FAILURE;
nsPIDOMWindow* win = doc->GetWindow();
if (!win) {
return NS_ERROR_FAILURE;
}
PRBool multi;
result = inputElem->GetMultiple(&multi);
NS_ENSURE_SUCCESS(result, result);
result = filePicker->Init(win, title, multi ?
(PRInt16)nsIFilePicker::modeOpenMultiple :
(PRInt16)nsIFilePicker::modeOpen);
if (NS_FAILED(result))
return result;
// Set filter "All Files"
filePicker->AppendFilters(nsIFilePicker::filterAll);
// Set default directry and filename
nsAutoString defaultName;
nsCOMArray<nsIFile> oldFiles;
fileControl->GetFileArray(oldFiles);
if (oldFiles.Count()) {
// set directory
nsCOMPtr<nsIFile> parentFile;
oldFiles[0]->GetParent(getter_AddRefs(parentFile));
if (parentFile) {
nsCOMPtr<nsILocalFile> parentLocalFile = do_QueryInterface(parentFile, &result);
if (parentLocalFile) {
filePicker->SetDisplayDirectory(parentLocalFile);
}
}
// Unfortunately nsIFilePicker doesn't allow multiple files to be
// default-selected, so only select something by default if exactly
// one file was selected before.
if (oldFiles.Count() == 1) {
nsAutoString leafName;
oldFiles[0]->GetLeafName(leafName);
if (!leafName.IsEmpty()) {
filePicker->SetDefaultString(leafName);
}
}
} else {
// Attempt to retrieve the last used directory from the content pref service
nsCOMPtr<nsILocalFile> localFile = do_CreateInstance(NS_LOCAL_FILE_CONTRACTID);
if (!localFile)
return NS_ERROR_OUT_OF_MEMORY;
if (NS_SUCCEEDED(FetchLastUsedDirectory(doc->GetDocumentURI(), localFile)))
filePicker->SetDisplayDirectory(localFile);
}
// Tell our textframe to remember the currently focused value
mFrame->mTextFrame->InitFocusedValue();
// Open dialog
PRInt16 mode;
result = filePicker->Show(&mode);
if (NS_FAILED(result))
return result;
if (mode == nsIFilePicker::returnCancel)
return NS_OK;
if (!mFrame) {
// The frame got destroyed while the filepicker was up. Don't do
// anything here.
// (This listener itself can't be destroyed because the event listener
// manager holds a strong reference to us while it fires the event.)
return NS_OK;
}
// Collect new selected filenames
nsTArray<nsString> newFileNames;
if (multi) {
nsCOMPtr<nsISimpleEnumerator> iter;
result = filePicker->GetFiles(getter_AddRefs(iter));
NS_ENSURE_SUCCESS(result, result);
nsCOMPtr<nsISupports> tmp;
PRBool prefSaved = PR_FALSE;
while (NS_SUCCEEDED(iter->GetNext(getter_AddRefs(tmp)))) {
nsCOMPtr<nsIFile> file = do_QueryInterface(tmp);
if (file) {
nsString unicodePath;
result = file->GetPath(unicodePath);
if (!unicodePath.IsEmpty()) {
newFileNames.AppendElement(unicodePath);
}
if (!prefSaved) {
// Store the last used directory using the content pref service
StoreLastUsedDirectory(doc->GetDocumentURI(), file);
prefSaved = PR_TRUE;
}
}
}
}
else {
nsCOMPtr<nsILocalFile> localFile;
result = filePicker->GetFile(getter_AddRefs(localFile));
if (localFile) {
nsString unicodePath;
result = localFile->GetPath(unicodePath);
if (!unicodePath.IsEmpty()) {
newFileNames.AppendElement(unicodePath);
}
// Store the last used directory using the content pref service
StoreLastUsedDirectory(doc->GetDocumentURI(), localFile);
}
}
// Set new selected files
if (!newFileNames.IsEmpty()) {
// Tell mTextFrame that this update of the value is a user initiated
// change. Otherwise it'll think that the value is being set by a script
// and not fire onchange when it should.
PRBool oldState = mFrame->mTextFrame->GetFireChangeEventState();
mFrame->mTextFrame->SetFireChangeEventState(PR_TRUE);
fileControl->SetFileNames(newFileNames);
mFrame->mTextFrame->SetFireChangeEventState(oldState);
// May need to fire an onchange here
mFrame->mTextFrame->CheckFireOnChange();
}
return NS_OK;
}
nsresult
nsFileControlFrame::FetchLastUsedDirectory(nsIURI* aURI, nsILocalFile* aFile)
{
// Attempt to get the CPS, if it's not present we'll just return
nsCOMPtr<nsIContentPrefService> contentPrefService =
do_GetService(NS_CONTENT_PREF_SERVICE_CONTRACTID);
if (!contentPrefService)
return NS_ERROR_NOT_AVAILABLE;
nsCOMPtr<nsIWritableVariant> uri = do_CreateInstance(NS_VARIANT_CONTRACTID);
if (!uri)
return NS_ERROR_OUT_OF_MEMORY;
uri->SetAsISupports(aURI);
NS_NAMED_LITERAL_STRING(prefName, "lastUploadDirectory");
// Get the last used directory, if it is stored
PRBool hasPref;
if (NS_SUCCEEDED(contentPrefService->HasPref(uri, prefName, &hasPref)) && hasPref) {
nsCOMPtr<nsIVariant> pref;
contentPrefService->GetPref(uri, prefName, getter_AddRefs(pref));
nsString prefStr;
pref->GetAsAString(prefStr);
return aFile->InitWithPath(prefStr);
}
return NS_OK;
}
void
nsFileControlFrame::StoreLastUsedDirectory(nsIURI* aURI, nsIFile* aFile)
{
// Attempt to get the CPS, if it's not present we'll just return
nsCOMPtr<nsIContentPrefService> contentPrefService =
do_GetService(NS_CONTENT_PREF_SERVICE_CONTRACTID);
if (!contentPrefService)
return;
nsCOMPtr<nsIWritableVariant> uri = do_CreateInstance(NS_VARIANT_CONTRACTID);
if (!uri)
return;
uri->SetAsISupports(aURI);
NS_NAMED_LITERAL_STRING(prefName, "lastUploadDirectory");
// Find the parent of aFile, and store it
nsCOMPtr<nsIFile> parentFile;
nsString unicodePath;
aFile->GetParent(getter_AddRefs(parentFile));
parentFile->GetPath(unicodePath);
if (!unicodePath.IsEmpty()) {
nsCOMPtr<nsIWritableVariant> prefValue = do_CreateInstance(NS_VARIANT_CONTRACTID);
if (!prefValue)
return;
prefValue->SetAsAString(unicodePath);
contentPrefService->SetPref(uri, prefName, prefValue);
}
}
nscoord
nsFileControlFrame::GetMinWidth(nsIRenderingContext *aRenderingContext)
{
nscoord result;
DISPLAY_MIN_WIDTH(this, result);
// Our min width is our pref width
result = GetPrefWidth(aRenderingContext);
return result;
}
NS_IMETHODIMP nsFileControlFrame::Reflow(nsPresContext* aPresContext,
nsHTMLReflowMetrics& aDesiredSize,
const nsHTMLReflowState& aReflowState,
nsReflowStatus& aStatus)
{
DO_GLOBAL_REFLOW_COUNT("nsFileControlFrame");
DISPLAY_REFLOW(aPresContext, this, aReflowState, aDesiredSize, aStatus);
aStatus = NS_FRAME_COMPLETE;
if (mState & NS_FRAME_FIRST_REFLOW) {
mTextFrame = GetTextControlFrame(aPresContext, this);
NS_ENSURE_TRUE(mTextFrame, NS_ERROR_UNEXPECTED);
if (mCachedState) {
mTextFrame->SetFormProperty(nsGkAtoms::value, *mCachedState);
delete mCachedState;
mCachedState = nsnull;
}
}
// nsBlockFrame takes care of all our reflow
return nsBlockFrame::Reflow(aPresContext, aDesiredSize, aReflowState,
aStatus);
}
nsNewFrame*
nsFileControlFrame::GetTextControlFrame(nsPresContext* aPresContext, nsIFrame* aStart)
{
nsNewFrame* result = nsnull;
#ifndef DEBUG_NEWFRAME
// find the text control frame.
nsIFrame* childFrame = aStart->GetFirstChild(nsnull);
while (childFrame) {
// see if the child is a text control
nsCOMPtr<nsIFormControl> formCtrl =
do_QueryInterface(childFrame->GetContent());
if (formCtrl && formCtrl->GetType() == NS_FORM_INPUT_TEXT) {
result = (nsNewFrame*)childFrame;
}
// if not continue looking
nsNewFrame* frame = GetTextControlFrame(aPresContext, childFrame);
if (frame)
result = frame;
childFrame = childFrame->GetNextSibling();
}
return result;
#else
return nsnull;
#endif
}
PRIntn
nsFileControlFrame::GetSkipSides() const
{
return 0;
}
void
nsFileControlFrame::SyncAttr(PRInt32 aNameSpaceID, nsIAtom* aAttribute,
PRInt32 aWhichControls)
{
nsAutoString value;
if (mContent->GetAttr(aNameSpaceID, aAttribute, value)) {
if (aWhichControls & SYNC_TEXT && mTextContent) {
mTextContent->SetAttr(aNameSpaceID, aAttribute, value, PR_TRUE);
}
if (aWhichControls & SYNC_BUTTON && mBrowse) {
mBrowse->SetAttr(aNameSpaceID, aAttribute, value, PR_TRUE);
}
} else {
if (aWhichControls & SYNC_TEXT && mTextContent) {
mTextContent->UnsetAttr(aNameSpaceID, aAttribute, PR_TRUE);
}
if (aWhichControls & SYNC_BUTTON && mBrowse) {
mBrowse->UnsetAttr(aNameSpaceID, aAttribute, PR_TRUE);
}
}
}
NS_IMETHODIMP
nsFileControlFrame::AttributeChanged(PRInt32 aNameSpaceID,
nsIAtom* aAttribute,
PRInt32 aModType)
{
// propagate disabled to text / button inputs
if (aNameSpaceID == kNameSpaceID_None) {
if (aAttribute == nsGkAtoms::disabled) {
SyncAttr(aNameSpaceID, aAttribute, SYNC_BOTH);
// propagate size to text
} else if (aAttribute == nsGkAtoms::size) {
SyncAttr(aNameSpaceID, aAttribute, SYNC_TEXT);
} else if (aAttribute == nsGkAtoms::tabindex) {
SyncAttr(aNameSpaceID, aAttribute, SYNC_BUTTON);
}
}
return nsBlockFrame::AttributeChanged(aNameSpaceID, aAttribute, aModType);
}
PRBool
nsFileControlFrame::IsLeaf() const
{
return PR_TRUE;
}
#ifdef NS_DEBUG
NS_IMETHODIMP
nsFileControlFrame::GetFrameName(nsAString& aResult) const
{
return MakeFrameName(NS_LITERAL_STRING("FileControl"), aResult);
}
#endif
nsresult
nsFileControlFrame::SetFormProperty(nsIAtom* aName,
const nsAString& aValue)
{
if (nsGkAtoms::value == aName) {
if (mTextFrame) {
mTextFrame->SetValue(aValue);
} else {
if (mCachedState) delete mCachedState;
mCachedState = new nsString(aValue);
NS_ENSURE_TRUE(mCachedState, NS_ERROR_OUT_OF_MEMORY);
}
}
return NS_OK;
}
nsresult
nsFileControlFrame::GetFormProperty(nsIAtom* aName, nsAString& aValue) const
{
aValue.Truncate(); // initialize out param
if (nsGkAtoms::value == aName) {
nsCOMPtr<nsIFileControlElement> fileControl =
do_QueryInterface(mContent);
if (fileControl) {
fileControl->GetDisplayFileName(aValue);
}
}
return NS_OK;
}
NS_IMETHODIMP
nsFileControlFrame::BuildDisplayList(nsDisplayListBuilder* aBuilder,
const nsRect& aDirtyRect,
const nsDisplayListSet& aLists)
{
// box-shadow
if (GetStyleBorder()->mBoxShadow) {
nsresult rv = aLists.BorderBackground()->AppendNewToTop(new (aBuilder)
nsDisplayBoxShadowOuter(this));
NS_ENSURE_SUCCESS(rv, rv);
}
// Our background is inherited to the text input, and we don't really want to
// paint it or out padding and borders (which we never have anyway, per
// styles in forms.css) -- doing it just makes us look ugly in some cases and
// has no effect in others.
nsDisplayListCollection tempList;
nsresult rv = nsBlockFrame::BuildDisplayList(aBuilder, aDirtyRect, tempList);
if (NS_FAILED(rv))
return rv;
tempList.BorderBackground()->DeleteAll();
// Clip height only
nsRect clipRect(aBuilder->ToReferenceFrame(this), GetSize());
clipRect.width = GetOverflowRect().XMost();
rv = OverflowClip(aBuilder, tempList, aLists, clipRect);
NS_ENSURE_SUCCESS(rv, rv);
// Disabled file controls don't pass mouse events to their children, so we
// put an invisible item in the display list above the children
// just to catch events
// REVIEW: I'm not sure why we do this, but that's what nsFileControlFrame::
// GetFrameForPoint was doing
if (mContent->HasAttr(kNameSpaceID_None, nsGkAtoms::disabled) &&
IsVisibleForPainting(aBuilder)) {
nsDisplayItem* item = new (aBuilder) nsDisplayEventReceiver(this);
if (!item)
return NS_ERROR_OUT_OF_MEMORY;
aLists.Content()->AppendToTop(item);
}
return DisplaySelectionOverlay(aBuilder, aLists);
}
#ifdef ACCESSIBILITY
NS_IMETHODIMP nsFileControlFrame::GetAccessible(nsIAccessible** aAccessible)
{
// Accessible object exists just to hold onto its children, for later shutdown
nsCOMPtr<nsIAccessibilityService> accService = do_GetService("@mozilla.org/accessibilityService;1");
if (accService) {
return accService->CreateHTMLGenericAccessible(static_cast<nsIFrame*>(this), aAccessible);
}
return NS_ERROR_FAILURE;
}
#endif
////////////////////////////////////////////////////////////
// Mouse listener implementation
NS_IMPL_ISUPPORTS2(nsFileControlFrame::MouseListener,
nsIDOMMouseListener,
nsIDOMEventListener)
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