gecko/parser/html/nsHtml5TreeOperation.cpp

205 lines
7.3 KiB
C++

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=2 sw=2 et tw=78: */
/* ***** 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 Communicator client 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>
* Henri Sivonen <hsivonen@iki.fi>
*
* 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 "nsHtml5TreeOperation.h"
#include "nsContentUtils.h"
#include "nsNodeUtils.h"
#include "nsAttrName.h"
#include "nsHtml5TreeBuilder.h"
#include "nsIDOMMutationEvent.h"
#include "mozAutoDocUpdate.h"
#include "nsBindingManager.h"
#include "nsXBLBinding.h"
nsHtml5TreeOperation::nsHtml5TreeOperation()
: mOpCode(eTreeOpAppend)
{
MOZ_COUNT_CTOR(nsHtml5TreeOperation);
}
nsHtml5TreeOperation::~nsHtml5TreeOperation()
{
MOZ_COUNT_DTOR(nsHtml5TreeOperation);
}
nsresult
nsHtml5TreeOperation::Perform(nsHtml5TreeBuilder* aBuilder)
{
nsresult rv = NS_OK;
switch(mOpCode) {
case eTreeOpAppend: {
aBuilder->PostPendingAppendNotification(mParent, mNode);
rv = mParent->AppendChildTo(mNode, PR_FALSE);
return rv;
}
case eTreeOpDetach: {
aBuilder->FlushPendingAppendNotifications();
nsIContent* parent = mNode->GetParent();
if (parent) {
PRUint32 pos = parent->IndexOf(mNode);
NS_ASSERTION((pos >= 0), "Element not found as child of its parent");
rv = parent->RemoveChildAt(pos, PR_TRUE, PR_FALSE);
NS_ENSURE_SUCCESS(rv, rv);
}
return rv;
}
case eTreeOpAppendChildrenToNewParent: {
aBuilder->FlushPendingAppendNotifications();
PRUint32 childCount = mParent->GetChildCount();
PRBool didAppend = PR_FALSE;
while (mNode->GetChildCount()) {
nsCOMPtr<nsIContent> child = mNode->GetChildAt(0);
rv = mNode->RemoveChildAt(0, PR_TRUE, PR_FALSE);
NS_ENSURE_SUCCESS(rv, rv);
rv = mParent->AppendChildTo(child, PR_FALSE);
NS_ENSURE_SUCCESS(rv, rv);
didAppend = PR_TRUE;
}
if (didAppend) {
nsNodeUtils::ContentAppended(mParent, childCount);
}
return rv;
}
case eTreeOpFosterParent: {
nsIContent* parent = mTable->GetParent();
if (parent && parent->IsNodeOfType(nsINode::eELEMENT)) {
aBuilder->FlushPendingAppendNotifications();
PRUint32 pos = parent->IndexOf(mTable);
rv = parent->InsertChildAt(mNode, pos, PR_FALSE);
NS_ENSURE_SUCCESS(rv, rv);
nsNodeUtils::ContentInserted(parent, mNode, pos);
} else {
aBuilder->PostPendingAppendNotification(mParent, mNode);
rv = mParent->AppendChildTo(mNode, PR_FALSE);
}
return rv;
}
case eTreeOpAppendToDocument: {
aBuilder->FlushPendingAppendNotifications();
nsIDocument* doc = aBuilder->GetDocument();
PRUint32 childCount = doc->GetChildCount();
rv = doc->AppendChildTo(mNode, PR_FALSE);
NS_ENSURE_SUCCESS(rv, rv);
nsNodeUtils::ContentInserted(doc, mNode, childCount);
return rv;
}
case eTreeOpAddAttributes: {
// mNode holds the new attributes and mParent is the target
nsIDocument* document = mParent->GetCurrentDoc();
PRUint32 len = mNode->GetAttrCount();
for (PRUint32 i = 0; i < len; ++i) {
const nsAttrName* attrName = mNode->GetAttrNameAt(i);
nsIAtom* localName = attrName->LocalName();
PRInt32 nsuri = attrName->NamespaceID();
if (!mParent->HasAttr(nsuri, localName)) {
nsAutoString value;
mNode->GetAttr(nsuri, localName, value);
// the manual notification code is based on nsGenericElement
PRUint32 stateMask = PRUint32(mParent->IntrinsicState());
nsNodeUtils::AttributeWillChange(mParent,
nsuri,
localName,
static_cast<PRUint8>(nsIDOMMutationEvent::ADDITION));
mParent->SetAttr(nsuri, localName, attrName->GetPrefix(), value, PR_FALSE);
if (document || mParent->HasFlag(NODE_FORCE_XBL_BINDINGS)) {
nsIDocument* ownerDoc = mParent->GetOwnerDoc();
if (ownerDoc) {
nsRefPtr<nsXBLBinding> binding =
ownerDoc->BindingManager()->GetBinding(mParent);
if (binding) {
binding->AttributeChanged(localName, nsuri, PR_FALSE, PR_FALSE);
}
}
}
stateMask = stateMask ^ PRUint32(mParent->IntrinsicState());
if (stateMask && document) {
MOZ_AUTO_DOC_UPDATE(document, UPDATE_CONTENT_STATE, PR_TRUE);
document->ContentStatesChanged(mParent, nsnull, stateMask);
}
nsNodeUtils::AttributeChanged(mParent,
nsuri,
localName,
static_cast<PRUint8>(nsIDOMMutationEvent::ADDITION),
stateMask);
}
}
return rv;
}
case eTreeOpDoneAddingChildren: {
mNode->DoneAddingChildren(PR_FALSE);
return rv;
}
case eTreeOpDoneCreatingElement: {
mNode->DoneCreatingElement();
return rv;
}
case eTreeOpUpdateStyleSheet: {
aBuilder->UpdateStyleSheet(mNode);
return rv;
}
case eTreeOpProcessBase: {
rv = aBuilder->ProcessBase(mNode);
return rv;
}
case eTreeOpProcessMeta: {
rv = aBuilder->ProcessMeta(mNode);
return rv;
}
case eTreeOpProcessOfflineManifest: {
rv = aBuilder->ProcessOfflineManifest(mNode);
return rv;
}
case eTreeOpStartLayout: {
aBuilder->StartLayout(); // this causes a flush anyway
return rv;
}
default: {
NS_NOTREACHED("Bogus tree op");
}
}
return rv; // keep compiler happy
}