зеркало из https://github.com/mozilla/gecko-dev.git
3036 строки
90 KiB
C++
3036 строки
90 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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*
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* The contents of this file are subject to the Netscape Public License
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* Version 1.0 (the "NPL"); you may not use this file except in
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* compliance with the NPL. You may obtain a copy of the NPL at
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* http://www.mozilla.org/NPL/
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*
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* Software distributed under the NPL is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
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* for the specific language governing rights and limitations under the
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* NPL.
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*
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* The Initial Developer of this code under the NPL is Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All Rights
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* Reserved.
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*/
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#include "nsIDOMDocument.h"
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#include "nsEditor.h"
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#include "nsIEditProperty.h" // to be removed XXX
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#include "nsIDOMText.h"
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#include "nsIDOMElement.h"
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#include "nsIDOMAttr.h"
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#include "nsIDOMNode.h"
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#include "nsIDOMNamedNodeMap.h"
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#include "nsIDOMNodeList.h"
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#include "nsIDOMRange.h"
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#include "nsIDocument.h"
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#include "nsIDiskDocument.h"
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#include "nsVector.h"
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#include "nsIServiceManager.h"
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#include "nsEditFactory.h"
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#include "nsTextEditFactory.h"
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#include "nsHTMLEditFactory.h"
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#include "nsEditorCID.h"
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#include "nsTransactionManagerCID.h"
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#include "nsITransactionManager.h"
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#include "nsIPresShell.h"
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#include "nsIViewManager.h"
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#include "nsIDOMSelection.h"
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#include "nsIEnumerator.h"
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#include "nsIAtom.h"
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#include "nsVoidArray.h"
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#include "nsISupportsArray.h"
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#include "nsICaret.h"
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#include "nsIEditActionListener.h"
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#include "nsIContent.h"
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#include "nsIContentIterator.h"
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#include "nsLayoutCID.h"
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// transactions the editor knows how to build
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#include "TransactionFactory.h"
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#include "EditAggregateTxn.h"
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#include "ChangeAttributeTxn.h"
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#include "CreateElementTxn.h"
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#include "InsertElementTxn.h"
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#include "DeleteElementTxn.h"
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#include "InsertTextTxn.h"
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#include "DeleteTextTxn.h"
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#include "DeleteRangeTxn.h"
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#include "SplitElementTxn.h"
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#include "JoinElementTxn.h"
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#include "nsIStringStream.h"
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#define HACK_FORCE_REDRAW 1
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#ifdef HACK_FORCE_REDRAW
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// INCLUDES FOR EVIL HACK TO FOR REDRAW
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// BEGIN
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#include "nsIViewManager.h"
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#include "nsIView.h"
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// END
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#endif
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// Drag & Drop, Clipboard
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#include "nsWidgetsCID.h"
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#include "nsIClipboard.h"
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#include "nsITransferable.h"
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#include "nsIGenericTransferable.h"
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#include "nsIDataFlavor.h"
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#include "nsIFormatConverter.h"
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// Drag & Drop, Clipboard Support
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static NS_DEFINE_CID(kCClipboardCID, NS_CLIPBOARD_CID);
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static NS_DEFINE_CID(kCGenericTransferableCID, NS_GENERICTRANSFERABLE_CID);
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static NS_DEFINE_IID(kCDataFlavorCID, NS_DATAFLAVOR_CID);
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static NS_DEFINE_IID(kCXIFFormatConverterCID, NS_XIFFORMATCONVERTER_CID);
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static NS_DEFINE_IID(kIContentIID, NS_ICONTENT_IID);
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static NS_DEFINE_IID(kIDOMTextIID, NS_IDOMTEXT_IID);
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static NS_DEFINE_IID(kIDOMElementIID, NS_IDOMELEMENT_IID);
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static NS_DEFINE_IID(kIDOMNodeIID, NS_IDOMNODE_IID);
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static NS_DEFINE_IID(kIDOMSelectionIID, NS_IDOMSELECTION_IID);
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static NS_DEFINE_IID(kIDOMRangeIID, NS_IDOMRANGE_IID);
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static NS_DEFINE_CID(kCRangeCID, NS_RANGE_CID);
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static NS_DEFINE_IID(kIDOMDocumentIID, NS_IDOMDOCUMENT_IID);
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static NS_DEFINE_IID(kIDocumentIID, NS_IDOCUMENT_IID);
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static NS_DEFINE_IID(kIPresShellIID, NS_IPRESSHELL_IID);
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static NS_DEFINE_IID(kIFactoryIID, NS_IFACTORY_IID);
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static NS_DEFINE_IID(kIEditFactoryIID, NS_IEDITORFACTORY_IID);
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static NS_DEFINE_IID(kITextEditFactoryIID, NS_ITEXTEDITORFACTORY_IID);
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static NS_DEFINE_IID(kIHTMLEditFactoryIID, NS_IHTMLEDITORFACTORY_IID);
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static NS_DEFINE_IID(kIEditorIID, NS_IEDITOR_IID);
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static NS_DEFINE_IID(kISupportsIID, NS_ISUPPORTS_IID);
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static NS_DEFINE_IID(kEditorCID, NS_EDITOR_CID);
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static NS_DEFINE_CID(kTextEditorCID, NS_TEXTEDITOR_CID);
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static NS_DEFINE_CID(kHTMLEditorCID, NS_HTMLEDITOR_CID);
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static NS_DEFINE_IID(kIContentIteratorIID, NS_ICONTENTITERTOR_IID);
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static NS_DEFINE_CID(kCContentIteratorCID, NS_CONTENTITERATOR_CID);
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// transaction manager
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static NS_DEFINE_IID(kITransactionManagerIID, NS_ITRANSACTIONMANAGER_IID);
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static NS_DEFINE_CID(kCTransactionManagerCID, NS_TRANSACTIONMANAGER_CID);
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// transactions
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static NS_DEFINE_IID(kEditAggregateTxnIID, EDIT_AGGREGATE_TXN_IID);
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static NS_DEFINE_IID(kInsertTextTxnIID, INSERT_TEXT_TXN_IID);
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static NS_DEFINE_IID(kDeleteTextTxnIID, DELETE_TEXT_TXN_IID);
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static NS_DEFINE_IID(kCreateElementTxnIID, CREATE_ELEMENT_TXN_IID);
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static NS_DEFINE_IID(kInsertElementTxnIID, INSERT_ELEMENT_TXN_IID);
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static NS_DEFINE_IID(kDeleteElementTxnIID, DELETE_ELEMENT_TXN_IID);
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static NS_DEFINE_IID(kDeleteRangeTxnIID, DELETE_RANGE_TXN_IID);
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static NS_DEFINE_IID(kChangeAttributeTxnIID,CHANGE_ATTRIBUTE_TXN_IID);
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static NS_DEFINE_IID(kSplitElementTxnIID, SPLIT_ELEMENT_TXN_IID);
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static NS_DEFINE_IID(kJoinElementTxnIID, JOIN_ELEMENT_TXN_IID);
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static NS_DEFINE_CID(kComponentManagerCID, NS_COMPONENTMANAGER_CID);
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static NS_DEFINE_CID(kCDOMRangeCID, NS_RANGE_CID);
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#ifdef XP_PC
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#define TRANSACTION_MANAGER_DLL "txmgr.dll"
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#else
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#ifdef XP_MAC
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#define TRANSACTION_MANAGER_DLL "TRANSACTION_MANAGER_DLL"
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#else // XP_UNIX
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#define TRANSACTION_MANAGER_DLL "libtxmgr.so"
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#endif
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#endif
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#define NS_ERROR_EDITOR_NO_SELECTION NS_ERROR_GENERATE_FAILURE(NS_ERROR_MODULE_EDITOR,1)
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#define NS_ERROR_EDITOR_NO_TEXTNODE NS_ERROR_GENERATE_FAILURE(NS_ERROR_MODULE_EDITOR,2)
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const char* nsEditor::kMOZEditorBogusNodeAttr="MOZ_EDITOR_BOGUS_NODE";
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const char* nsEditor::kMOZEditorBogusNodeValue="TRUE";
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#ifdef NS_DEBUG_EDITOR
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static PRBool gNoisy = PR_FALSE;
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#else
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static const PRBool gNoisy = PR_FALSE;
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#endif
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/* ----- TEST METHODS DECLARATIONS ----- */
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// Methods defined here are TEMPORARY
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//NS_IMETHODIMP GetColIndexForCell(nsIPresShell *aPresShell, nsIDOMNode *aCellNode, PRInt32 &aCellIndex);
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/* ----- END TEST METHOD DECLARATIONS ----- */
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PRInt32 nsEditor::gInstanceCount = 0;
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//monitor for the editor
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PRMonitor *getEditorMonitor() //if more than one person asks for the monitor at the same time for the FIRST time, we are screwed
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{
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static PRMonitor *ns_editlock = nsnull;
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if (nsnull == ns_editlock)
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{
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ns_editlock = (PRMonitor *)1; //how long will the next line take? lets cut down on the chance of reentrancy
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ns_editlock = PR_NewMonitor();
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}
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else if ((PRMonitor *)1 == ns_editlock)
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return getEditorMonitor();
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return ns_editlock;
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}
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nsIComponentManager* gCompMgr = NULL;
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/*
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we must be good providers of factories etc. this is where to put ALL editor exports
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*/
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//BEGIN EXPORTS
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extern "C" NS_EXPORT nsresult NSGetFactory(nsISupports * aServMgr,
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const nsCID & aClass,
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const char * aClassName,
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const char * aProgID,
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nsIFactory ** aFactory)
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{
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if (nsnull == aFactory) {
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return NS_ERROR_NULL_POINTER;
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}
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*aFactory = nsnull;
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nsresult rv;
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nsCOMPtr<nsIServiceManager> servMgr(do_QueryInterface(aServMgr, &rv));
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if (NS_FAILED(rv)) return rv;
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rv = servMgr->GetService(kComponentManagerCID, nsIComponentManager::GetIID(),
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(nsISupports**)&gCompMgr);
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if (NS_FAILED(rv)) return rv;
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rv = NS_NOINTERFACE;
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if (aClass.Equals(kEditorCID)) {
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rv = GetEditFactory(aFactory, aClass);
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if (NS_FAILED(rv)) goto done;
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}
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else if (aClass.Equals(kTextEditorCID)) {
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rv = GetTextEditFactory(aFactory, aClass);
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if (NS_FAILED(rv)) goto done;
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}
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else if (aClass.Equals(kHTMLEditorCID)) {
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rv = GetHTMLEditFactory(aFactory, aClass);
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if (NS_FAILED(rv)) goto done;
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}
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done:
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(void)servMgr->ReleaseService(kComponentManagerCID, gCompMgr);
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return rv;
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}
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extern "C" NS_EXPORT PRBool
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NSCanUnload(nsISupports* aServMgr)
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{
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return nsEditor::gInstanceCount; //I have no idea. I am copying code here
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}
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extern "C" NS_EXPORT nsresult
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NSRegisterSelf(nsISupports* aServMgr, const char *path)
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{
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nsresult rv;
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nsCOMPtr<nsIServiceManager> servMgr(do_QueryInterface(aServMgr, &rv));
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if (NS_FAILED(rv)) return rv;
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nsIComponentManager* compMgr;
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rv = servMgr->GetService(kComponentManagerCID,
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nsIComponentManager::GetIID(),
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(nsISupports**)&compMgr);
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if (NS_FAILED(rv)) return rv;
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rv = compMgr->RegisterComponent(kEditorCID, NULL, NULL, path,
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PR_TRUE, PR_TRUE);
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if (NS_FAILED(rv)) goto done;
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rv = compMgr->RegisterComponent(kTextEditorCID, NULL, NULL, path,
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PR_TRUE, PR_TRUE);
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if (NS_FAILED(rv)) goto done;
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rv = compMgr->RegisterComponent(kHTMLEditorCID, NULL, NULL, path,
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PR_TRUE, PR_TRUE);
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done:
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(void)servMgr->ReleaseService(kComponentManagerCID, compMgr);
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return rv;
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}
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extern "C" NS_EXPORT nsresult
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NSUnregisterSelf(nsISupports* aServMgr, const char *path)
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{
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nsresult rv;
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nsCOMPtr<nsIServiceManager> servMgr(do_QueryInterface(aServMgr, &rv));
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if (NS_FAILED(rv)) return rv;
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nsIComponentManager* compMgr;
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rv = servMgr->GetService(kComponentManagerCID,
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nsIComponentManager::GetIID(),
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(nsISupports**)&compMgr);
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if (NS_FAILED(rv)) return rv;
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rv = compMgr->UnregisterComponent(kIEditFactoryIID, path);
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if (NS_FAILED(rv)) goto done;
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rv = compMgr->UnregisterComponent(kITextEditFactoryIID, path);
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if (NS_FAILED(rv)) goto done;
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rv = compMgr->UnregisterComponent(kIHTMLEditFactoryIID, path);
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done:
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(void)servMgr->ReleaseService(kComponentManagerCID, compMgr);
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return rv;
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}
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//END EXPORTS
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//class implementations are in order they are declared in nsEditor.h
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nsEditor::nsEditor()
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{
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//initialize member variables here
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NS_INIT_REFCNT();
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mIMEFirstTransaction=PR_FALSE;
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PR_EnterMonitor(getEditorMonitor());
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gInstanceCount++;
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mActionListeners = 0;
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PR_ExitMonitor(getEditorMonitor());
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}
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nsEditor::~nsEditor()
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{
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if (mActionListeners)
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{
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PRInt32 i;
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nsIEditActionListener *listener;
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for (i = 0; i < mActionListeners->Count(); i++)
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{
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listener = (nsIEditActionListener *)mActionListeners->ElementAt(i);
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NS_IF_RELEASE(listener);
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}
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delete mActionListeners;
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mActionListeners = 0;
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}
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}
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// BEGIN nsEditor core implementation
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NS_IMPL_ADDREF(nsEditor)
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NS_IMPL_RELEASE(nsEditor)
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NS_IMETHODIMP
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nsEditor::QueryInterface(REFNSIID aIID, void** aInstancePtr)
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{
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if (nsnull == aInstancePtr) {
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return NS_ERROR_NULL_POINTER;
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}
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if (aIID.Equals(kISupportsIID)) {
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nsIEditor *tmp = this;
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nsISupports *tmp2 = tmp;
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*aInstancePtr = (void*)tmp2;
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NS_ADDREF_THIS();
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return NS_OK;
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}
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if (aIID.Equals(kIEditorIID)) {
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*aInstancePtr = (void*)(nsIEditor*)this;
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NS_ADDREF_THIS();
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return NS_OK;
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}
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return NS_NOINTERFACE;
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}
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NS_IMETHODIMP
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nsEditor::GetDocument(nsIDOMDocument **aDoc)
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{
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if (!aDoc)
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return NS_ERROR_NULL_POINTER;
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*aDoc = nsnull; // init out param
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NS_PRECONDITION(mDoc, "bad state, null mDoc");
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if (!mDoc)
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return NS_ERROR_NOT_INITIALIZED;
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return mDoc->QueryInterface(kIDOMDocumentIID, (void **)aDoc);
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}
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nsresult
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nsEditor::GetPresShell(nsIPresShell **aPS)
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{
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if (!aPS)
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return NS_ERROR_NULL_POINTER;
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*aPS = nsnull; // init out param
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NS_PRECONDITION(mPresShell, "bad state, null mPresShell");
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if (!mPresShell)
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return NS_ERROR_NOT_INITIALIZED;
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return mPresShell->QueryInterface(kIPresShellIID, (void **)aPS);
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}
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NS_IMETHODIMP
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nsEditor::GetSelection(nsIDOMSelection **aSelection)
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{
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if (!aSelection)
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return NS_ERROR_NULL_POINTER;
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*aSelection = nsnull;
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nsresult result = mPresShell->GetSelection(aSelection); // does an addref
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return result;
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}
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NS_IMETHODIMP
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nsEditor::Init(nsIDOMDocument *aDoc, nsIPresShell* aPresShell)
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{
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NS_PRECONDITION(nsnull!=aDoc && nsnull!=aPresShell, "bad arg");
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if ((nsnull==aDoc) || (nsnull==aPresShell))
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return NS_ERROR_NULL_POINTER;
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mDoc = aDoc;
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mPresShell = aPresShell; // we don't addref the pres shell
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mPresShell->GetViewManager(&mViewManager);
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if (mViewManager){
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mViewManager->Release(); //we want a weak link
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}
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mUpdateCount=0;
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InsertTextTxn::ClassInit();
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/* Show the caret */
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nsCOMPtr<nsICaret> caret;
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if (NS_SUCCEEDED(mPresShell->GetCaret(getter_AddRefs(caret))))
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{
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caret->SetCaretVisible(PR_TRUE);
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caret->SetCaretReadOnly(PR_FALSE);
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}
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mPresShell->SetCaretEnabled(PR_TRUE);
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NS_POSTCONDITION(mDoc && mPresShell, "bad state");
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return NS_OK;
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}
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NS_IMETHODIMP
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nsEditor::EnableUndo(PRBool aEnable)
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{
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nsITransactionManager *txnMgr = 0;
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nsresult result=NS_OK;
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if (PR_TRUE==aEnable)
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{
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if (!mTxnMgr)
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{
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result = gCompMgr->CreateInstance(kCTransactionManagerCID,
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nsnull,
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kITransactionManagerIID, (void **)&txnMgr);
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if (NS_FAILED(result) || !txnMgr) {
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printf("ERROR: Failed to get TransactionManager instance.\n");
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return NS_ERROR_NOT_AVAILABLE;
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}
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mTxnMgr = do_QueryInterface(txnMgr); // CreateInstance refCounted the instance for us, remember it in an nsCOMPtr
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}
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}
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else
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{ // disable the transaction manager if it is enabled
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if (mTxnMgr)
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{
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mTxnMgr = do_QueryInterface(nsnull);
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}
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}
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return result;
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}
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NS_IMETHODIMP nsEditor::CanUndo(PRBool &aIsEnabled, PRBool &aCanUndo)
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{
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aIsEnabled = ((PRBool)((nsITransactionManager *)0!=mTxnMgr.get()));
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if (aIsEnabled)
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{
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PRInt32 numTxns=0;
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mTxnMgr->GetNumberOfUndoItems(&numTxns);
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aCanUndo = ((PRBool)(0==numTxns));
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}
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else {
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aCanUndo = PR_FALSE;
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}
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return NS_OK;
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}
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NS_IMETHODIMP nsEditor::CanRedo(PRBool &aIsEnabled, PRBool &aCanRedo)
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{
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aIsEnabled = ((PRBool)((nsITransactionManager *)0!=mTxnMgr.get()));
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if (aIsEnabled)
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{
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PRInt32 numTxns=0;
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mTxnMgr->GetNumberOfRedoItems(&numTxns);
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aCanRedo = ((PRBool)(0==numTxns));
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|
}
|
|
else {
|
|
aCanRedo = PR_FALSE;
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsEditor::SetProperties(nsVoidArray * aPropList)
|
|
{
|
|
return NS_OK;
|
|
}
|
|
|
|
|
|
|
|
NS_IMETHODIMP
|
|
nsEditor::GetProperties(nsVoidArray *aPropList)
|
|
{
|
|
return NS_OK;
|
|
}
|
|
|
|
|
|
NS_IMETHODIMP
|
|
nsEditor::SetAttribute(nsIDOMElement *aElement, const nsString& aAttribute, const nsString& aValue)
|
|
{
|
|
ChangeAttributeTxn *txn;
|
|
nsresult result = CreateTxnForSetAttribute(aElement, aAttribute, aValue, &txn);
|
|
if (NS_SUCCEEDED(result)) {
|
|
result = Do(txn);
|
|
}
|
|
return result;
|
|
}
|
|
|
|
|
|
NS_IMETHODIMP
|
|
nsEditor::CreateTxnForSetAttribute(nsIDOMElement *aElement,
|
|
const nsString& aAttribute,
|
|
const nsString& aValue,
|
|
ChangeAttributeTxn ** aTxn)
|
|
{
|
|
nsresult result = NS_ERROR_NULL_POINTER;
|
|
if (nsnull != aElement)
|
|
{
|
|
result = TransactionFactory::GetNewTransaction(kChangeAttributeTxnIID, (EditTxn **)aTxn);
|
|
if (NS_SUCCEEDED(result)) {
|
|
result = (*aTxn)->Init(this, aElement, aAttribute, aValue, PR_FALSE);
|
|
}
|
|
}
|
|
return result;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsEditor::GetAttributeValue(nsIDOMElement *aElement,
|
|
const nsString& aAttribute,
|
|
nsString& aResultValue,
|
|
PRBool& aResultIsSet)
|
|
{
|
|
aResultIsSet=PR_FALSE;
|
|
nsresult result=NS_OK;
|
|
if (nsnull!=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 nsString& aAttribute)
|
|
{
|
|
ChangeAttributeTxn *txn;
|
|
nsresult result = CreateTxnForRemoveAttribute(aElement, aAttribute, &txn);
|
|
if (NS_SUCCEEDED(result)) {
|
|
result = Do(txn);
|
|
}
|
|
return result;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsEditor::CreateTxnForRemoveAttribute(nsIDOMElement *aElement,
|
|
const nsString& aAttribute,
|
|
ChangeAttributeTxn ** aTxn)
|
|
{
|
|
nsresult result = NS_ERROR_NULL_POINTER;
|
|
if (nsnull != aElement)
|
|
{
|
|
result = TransactionFactory::GetNewTransaction(kChangeAttributeTxnIID, (EditTxn **)aTxn);
|
|
if (NS_SUCCEEDED(result))
|
|
{
|
|
nsAutoString value;
|
|
result = (*aTxn)->Init(this, aElement, aAttribute, value, PR_TRUE);
|
|
}
|
|
}
|
|
return result;
|
|
}
|
|
|
|
// Objects must be DOM elements
|
|
NS_IMETHODIMP
|
|
nsEditor::CopyAttributes(nsIDOMNode *aDestNode, nsIDOMNode *aSourceNode)
|
|
{
|
|
nsresult result=NS_OK;
|
|
|
|
if (!aDestNode || !aSourceNode)
|
|
return NS_ERROR_NULL_POINTER;
|
|
|
|
nsCOMPtr<nsIDOMElement> destElement = do_QueryInterface(aDestNode);
|
|
nsCOMPtr<nsIDOMElement> sourceElement = do_QueryInterface(aSourceNode);
|
|
if (!destElement || !sourceElement)
|
|
return NS_ERROR_NO_INTERFACE;
|
|
|
|
nsAutoString name;
|
|
nsAutoString value;
|
|
nsCOMPtr<nsIDOMNamedNodeMap> sourceAttributes;
|
|
sourceElement->GetAttributes(getter_AddRefs(sourceAttributes));
|
|
nsCOMPtr<nsIDOMNamedNodeMap> destAttributes;
|
|
destElement->GetAttributes(getter_AddRefs(destAttributes));
|
|
if (!sourceAttributes || !destAttributes)
|
|
return NS_ERROR_FAILURE;
|
|
|
|
PRUint32 sourceCount;
|
|
sourceAttributes->GetLength(&sourceCount);
|
|
PRUint32 i, destCount;
|
|
destAttributes->GetLength(&destCount);
|
|
nsIDOMNode* attrNode;
|
|
|
|
// Clear existing attributes
|
|
for (i = 0; i < destCount; i++)
|
|
{
|
|
if( NS_SUCCEEDED(destAttributes->Item(i, &attrNode)) && attrNode)
|
|
{
|
|
nsCOMPtr<nsIDOMAttr> destAttribute = do_QueryInterface(attrNode);
|
|
if (destAttribute)
|
|
{
|
|
nsCOMPtr<nsIDOMAttr> resultAttribute;
|
|
destElement->RemoveAttributeNode(destAttribute, getter_AddRefs(resultAttribute));
|
|
// Is the resultAttribute deleted automagically?
|
|
}
|
|
}
|
|
}
|
|
// Set just the attributes that the source element has
|
|
for (i = 0; i < sourceCount; i++)
|
|
{
|
|
if( NS_SUCCEEDED(sourceAttributes->Item(i, &attrNode)) && attrNode)
|
|
{
|
|
nsCOMPtr<nsIDOMAttr> sourceAttribute = do_QueryInterface(attrNode);
|
|
if (sourceAttribute)
|
|
{
|
|
nsString sourceAttrName;
|
|
if (NS_SUCCEEDED(sourceAttribute->GetName(sourceAttrName)))
|
|
{
|
|
nsString sourceAttrValue;
|
|
if (NS_SUCCEEDED(sourceAttribute->GetValue(sourceAttrValue)) &&
|
|
sourceAttrValue != "")
|
|
{
|
|
destElement->SetAttribute(sourceAttrName, sourceAttrValue);
|
|
} else {
|
|
// Do we ever get here?
|
|
destElement->RemoveAttribute(sourceAttrName);
|
|
#if DEBUG_cmanske
|
|
printf("Attribute in NamedNodeMap has empty value in nsEditor::CopyAttributes()\n");
|
|
#endif
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
return result;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsEditor::InsertBreak()
|
|
{
|
|
return NS_OK;
|
|
}
|
|
|
|
|
|
//END nsIEditorInterfaces
|
|
|
|
|
|
//BEGIN nsEditor Private methods
|
|
|
|
|
|
NS_IMETHODIMP
|
|
nsEditor::Do(nsITransaction *aTxn)
|
|
{
|
|
if (gNoisy) { printf("Editor::Do ----------\n"); }
|
|
nsresult result = NS_OK;
|
|
nsCOMPtr<nsIDOMSelection>selection;
|
|
nsresult selectionResult = GetSelection(getter_AddRefs(selection));
|
|
if (NS_SUCCEEDED(selectionResult) && selection) {
|
|
selection->StartBatchChanges();
|
|
if (aTxn)
|
|
{
|
|
if (mTxnMgr) {
|
|
result = mTxnMgr->Do(aTxn);
|
|
}
|
|
else {
|
|
result = aTxn->Do();
|
|
}
|
|
}
|
|
selection->EndBatchChanges();
|
|
}
|
|
|
|
PRBool isTransientTransaction;
|
|
if (NS_SUCCEEDED(result) &&
|
|
NS_SUCCEEDED(aTxn->GetIsTransient(&isTransientTransaction) &&
|
|
!isTransientTransaction)) // don't count transient transactions
|
|
result = IncDocModCount(+1);
|
|
|
|
return result;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsEditor::Undo(PRUint32 aCount)
|
|
{
|
|
if (gNoisy) { printf("Editor::Undo ----------\n"); }
|
|
nsresult result = NS_OK;
|
|
nsCOMPtr<nsIDOMSelection>selection;
|
|
nsresult selectionResult = GetSelection(getter_AddRefs(selection));
|
|
if (NS_SUCCEEDED(selectionResult) && selection) {
|
|
selection->StartBatchChanges();
|
|
if ((nsITransactionManager *)nsnull!=mTxnMgr.get())
|
|
{
|
|
PRUint32 i=0;
|
|
for ( ; i<aCount; i++)
|
|
{
|
|
result = mTxnMgr->Undo();
|
|
if (NS_FAILED(result))
|
|
break;
|
|
}
|
|
}
|
|
selection->EndBatchChanges();
|
|
}
|
|
|
|
if (NS_SUCCEEDED(result))
|
|
result = IncDocModCount(-1); // all undoable transactions are non-transient
|
|
|
|
return result;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsEditor::Redo(PRUint32 aCount)
|
|
{
|
|
if (gNoisy) { printf("Editor::Redo ----------\n"); }
|
|
nsresult result = NS_OK;
|
|
nsCOMPtr<nsIDOMSelection>selection;
|
|
nsresult selectionResult = GetSelection(getter_AddRefs(selection));
|
|
if (NS_SUCCEEDED(selectionResult) && selection) {
|
|
selection->StartBatchChanges();
|
|
if ((nsITransactionManager *)nsnull!=mTxnMgr.get())
|
|
{
|
|
PRUint32 i=0;
|
|
for ( ; i<aCount; i++)
|
|
{
|
|
result = mTxnMgr->Redo();
|
|
if (NS_FAILED(result))
|
|
break;
|
|
}
|
|
}
|
|
selection->EndBatchChanges();
|
|
}
|
|
return result;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsEditor::BeginTransaction()
|
|
{
|
|
NS_PRECONDITION(mUpdateCount>=0, "bad state");
|
|
if (nsnull!=mViewManager)
|
|
{
|
|
if (0==mUpdateCount)
|
|
mViewManager->DisableRefresh();
|
|
mUpdateCount++;
|
|
}
|
|
if ((nsITransactionManager *)nsnull!=mTxnMgr.get())
|
|
{
|
|
mTxnMgr->BeginBatch();
|
|
}
|
|
nsCOMPtr<nsIDOMSelection>selection;
|
|
nsresult selectionResult = GetSelection(getter_AddRefs(selection));
|
|
if (NS_SUCCEEDED(selectionResult) && selection) {
|
|
selection->StartBatchChanges();
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsEditor::EndTransaction()
|
|
{
|
|
NS_PRECONDITION(mUpdateCount>0, "bad state");
|
|
if (nsnull!=mViewManager)
|
|
{
|
|
mUpdateCount--;
|
|
if (0==mUpdateCount)
|
|
mViewManager->EnableRefresh();
|
|
}
|
|
if ((nsITransactionManager *)nsnull!=mTxnMgr.get())
|
|
{
|
|
mTxnMgr->EndBatch();
|
|
}
|
|
nsCOMPtr<nsIDOMSelection>selection;
|
|
nsresult selectionResult = GetSelection(getter_AddRefs(selection));
|
|
if (NS_SUCCEEDED(selectionResult) && selection) {
|
|
selection->EndBatchChanges();
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP nsEditor::ScrollIntoView(PRBool aScrollToBegin)
|
|
{
|
|
return NS_OK;
|
|
}
|
|
|
|
// XXX: the rule system should tell us which node to select all on (ie, the root, or the body)
|
|
NS_IMETHODIMP nsEditor::SelectAll()
|
|
{
|
|
if (!mDoc || !mPresShell) { return NS_ERROR_NOT_INITIALIZED; }
|
|
|
|
nsCOMPtr<nsIDOMSelection> selection;
|
|
nsresult result = mPresShell->GetSelection(getter_AddRefs(selection));
|
|
if (NS_SUCCEEDED(result) && selection)
|
|
{
|
|
nsCOMPtr<nsIDOMNodeList>nodeList;
|
|
nsAutoString bodyTag = "body";
|
|
result = mDoc->GetElementsByTagName(bodyTag, getter_AddRefs(nodeList));
|
|
if ((NS_SUCCEEDED(result)) && nodeList)
|
|
{
|
|
PRUint32 count;
|
|
nodeList->GetLength(&count);
|
|
NS_ASSERTION(1==count, "there is not exactly 1 body in the document!");
|
|
nsCOMPtr<nsIDOMNode>bodyNode;
|
|
result = nodeList->Item(0, getter_AddRefs(bodyNode));
|
|
if ((NS_SUCCEEDED(result)) && bodyNode)
|
|
{
|
|
selection->Collapse(bodyNode, 0);
|
|
PRInt32 numBodyChildren=0;
|
|
nsCOMPtr<nsIDOMNode>lastChild;
|
|
result = bodyNode->GetLastChild(getter_AddRefs(lastChild));
|
|
if ((NS_SUCCEEDED(result)) && lastChild)
|
|
{
|
|
GetChildOffset(lastChild, bodyNode, numBodyChildren);
|
|
selection->Extend(bodyNode, numBodyChildren+1);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
return result;
|
|
}
|
|
|
|
NS_IMETHODIMP nsEditor::Cut()
|
|
{
|
|
//printf("nsEditor::Cut\n");
|
|
nsresult res = Copy();
|
|
if (NS_SUCCEEDED(res))
|
|
res = DeleteSelection(eDoNothing);
|
|
return res;
|
|
}
|
|
|
|
|
|
NS_IMETHODIMP nsEditor::Copy()
|
|
{
|
|
//printf("nsEditor::Copy\n");
|
|
|
|
return mPresShell->DoCopy();
|
|
}
|
|
|
|
NS_IMETHODIMP nsEditor::Paste()
|
|
{
|
|
//printf("nsEditor::Paste\n");
|
|
nsString stuffToPaste;
|
|
|
|
// Get Clipboard Service
|
|
nsIClipboard* clipboard;
|
|
nsresult rv = nsServiceManager::GetService(kCClipboardCID,
|
|
nsIClipboard::GetIID(),
|
|
(nsISupports **)&clipboard);
|
|
|
|
// Create generic Transferable for getting the data
|
|
nsCOMPtr<nsIGenericTransferable> genericTrans;
|
|
rv = nsComponentManager::CreateInstance(kCGenericTransferableCID, nsnull,
|
|
nsIGenericTransferable::GetIID(),
|
|
(void**) getter_AddRefs(genericTrans));
|
|
if (NS_OK == rv) {
|
|
// Get the nsITransferable interface for getting the data from the clipboard
|
|
nsCOMPtr<nsITransferable> trans(do_QueryInterface(genericTrans));
|
|
if (trans) {
|
|
nsCOMPtr<nsIDataFlavor> flavor;
|
|
|
|
// Create the desired DataFlavor for the type of data we want to get out of the transferable
|
|
rv = nsComponentManager::CreateInstance(kCDataFlavorCID, nsnull, nsIDataFlavor::GetIID(), (void**) getter_AddRefs(flavor));
|
|
if (NS_OK == rv) {
|
|
// Initialize the DataFlavor and set it into the GenericTransferable
|
|
flavor->Init(kTextMime, kTextMime);
|
|
|
|
//#define TEST_IS_DATA_FLAVOR_SUPPORTED 1
|
|
#ifdef TEST_IS_DATA_FLAVOR_SUPPORTED
|
|
// For testing IsDataFlavorSupported:
|
|
rv = trans->IsDataFlavorSupported(flavor);
|
|
if (!NS_SUCCEEDED(rv)) {
|
|
printf("\07>>>>>>>>>>>>> transferable doesn't support text data flavor\n");
|
|
//return rv;
|
|
}
|
|
#endif /* TEST_IS_DATA_FLAVOR_SUPPORTED */
|
|
|
|
genericTrans->AddDataFlavor(flavor);
|
|
|
|
// Get the Data from the clipboard
|
|
clipboard->GetData(trans);
|
|
|
|
// Now we ask the transferable for the data
|
|
// it still owns the data, we just have a pointer to it.
|
|
// If it can't support a "text" output of the data the call will fail
|
|
char *str = 0;
|
|
PRUint32 len;
|
|
if (NS_OK == trans->GetTransferData(flavor, (void **)&str, &len)) {
|
|
|
|
// Make adjustments for null terminated strings
|
|
if (str && len > 0) {
|
|
// stuffToPaste is ready for insertion into the content
|
|
stuffToPaste.SetString(str, len);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
nsServiceManager::ReleaseService(kCClipboardCID, clipboard);
|
|
|
|
//printf("Trying to insert '%s'\n", stuffToPaste.ToNewCString());
|
|
|
|
// Now let InsertText handle the hard stuff:
|
|
return InsertText(stuffToPaste);
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsEditor::AddEditActionListener(nsIEditActionListener *aListener)
|
|
{
|
|
if (!aListener)
|
|
return NS_ERROR_NULL_POINTER;
|
|
|
|
if (!mActionListeners)
|
|
{
|
|
mActionListeners = new nsVoidArray();
|
|
|
|
if (!mActionListeners)
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
}
|
|
|
|
if (!mActionListeners->AppendElement((void *)aListener))
|
|
return NS_ERROR_FAILURE;
|
|
|
|
NS_ADDREF(aListener);
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsEditor::RemoveEditActionListener(nsIEditActionListener *aListener)
|
|
{
|
|
if (!aListener || !mActionListeners)
|
|
return NS_ERROR_FAILURE;
|
|
|
|
if (!mActionListeners->RemoveElement((void *)aListener))
|
|
return NS_ERROR_FAILURE;
|
|
|
|
NS_IF_RELEASE(aListener);
|
|
|
|
if (mActionListeners->Count() < 1)
|
|
{
|
|
delete mActionListeners;
|
|
mActionListeners = 0;
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
|
|
nsString & nsIEditor::GetTextNodeTag()
|
|
{
|
|
static nsString gTextNodeTag("special text node tag");
|
|
return gTextNodeTag;
|
|
}
|
|
|
|
|
|
NS_IMETHODIMP nsEditor::CreateNode(const nsString& aTag,
|
|
nsIDOMNode * aParent,
|
|
PRInt32 aPosition,
|
|
nsIDOMNode ** aNewNode)
|
|
{
|
|
CreateElementTxn *txn;
|
|
nsresult result = CreateTxnForCreateElement(aTag, aParent, aPosition, &txn);
|
|
if (NS_SUCCEEDED(result))
|
|
{
|
|
result = Do(txn);
|
|
if (NS_SUCCEEDED(result))
|
|
{
|
|
result = txn->GetNewNode(aNewNode);
|
|
NS_ASSERTION((NS_SUCCEEDED(result)), "GetNewNode can't fail if txn::Do succeeded.");
|
|
}
|
|
}
|
|
return result;
|
|
}
|
|
|
|
NS_IMETHODIMP nsEditor::CreateTxnForCreateElement(const nsString& aTag,
|
|
nsIDOMNode *aParent,
|
|
PRInt32 aPosition,
|
|
CreateElementTxn ** aTxn)
|
|
{
|
|
nsresult result = NS_ERROR_NULL_POINTER;
|
|
if (nsnull != aParent)
|
|
{
|
|
result = TransactionFactory::GetNewTransaction(kCreateElementTxnIID, (EditTxn **)aTxn);
|
|
if (NS_SUCCEEDED(result)) {
|
|
result = (*aTxn)->Init(this, aTag, aParent, aPosition);
|
|
}
|
|
}
|
|
return result;
|
|
}
|
|
|
|
NS_IMETHODIMP nsEditor::InsertNode(nsIDOMNode * aNode,
|
|
nsIDOMNode * aParent,
|
|
PRInt32 aPosition)
|
|
{
|
|
PRInt32 i;
|
|
nsIEditActionListener *listener;
|
|
|
|
if (mActionListeners)
|
|
{
|
|
for (i = 0; i < mActionListeners->Count(); i++)
|
|
{
|
|
listener = (nsIEditActionListener *)mActionListeners->ElementAt(i);
|
|
if (listener)
|
|
listener->WillInsertNode(aNode, aParent, aPosition);
|
|
}
|
|
}
|
|
|
|
InsertElementTxn *txn;
|
|
nsresult result = CreateTxnForInsertElement(aNode, aParent, aPosition, &txn);
|
|
if (NS_SUCCEEDED(result)) {
|
|
result = Do(txn);
|
|
}
|
|
|
|
if (mActionListeners)
|
|
{
|
|
for (i = 0; i < mActionListeners->Count(); i++)
|
|
{
|
|
listener = (nsIEditActionListener *)mActionListeners->ElementAt(i);
|
|
if (listener)
|
|
listener->DidInsertNode(aNode, aParent, aPosition, result);
|
|
}
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
NS_IMETHODIMP nsEditor::CreateTxnForInsertElement(nsIDOMNode * aNode,
|
|
nsIDOMNode * aParent,
|
|
PRInt32 aPosition,
|
|
InsertElementTxn ** aTxn)
|
|
{
|
|
nsresult result = NS_ERROR_NULL_POINTER;
|
|
if (aNode && aParent && aTxn)
|
|
{
|
|
result = TransactionFactory::GetNewTransaction(kInsertElementTxnIID, (EditTxn **)aTxn);
|
|
if (NS_SUCCEEDED(result)) {
|
|
result = (*aTxn)->Init(aNode, aParent, aPosition, this);
|
|
}
|
|
}
|
|
return result;
|
|
}
|
|
|
|
NS_IMETHODIMP nsEditor::DeleteNode(nsIDOMNode * aElement)
|
|
{
|
|
PRInt32 i;
|
|
nsIEditActionListener *listener;
|
|
|
|
if (mActionListeners)
|
|
{
|
|
for (i = 0; i < mActionListeners->Count(); i++)
|
|
{
|
|
listener = (nsIEditActionListener *)mActionListeners->ElementAt(i);
|
|
if (listener)
|
|
listener->WillDeleteNode(aElement);
|
|
}
|
|
}
|
|
|
|
DeleteElementTxn *txn;
|
|
nsresult result = CreateTxnForDeleteElement(aElement, &txn);
|
|
if (NS_SUCCEEDED(result)) {
|
|
result = Do(txn);
|
|
}
|
|
|
|
if (mActionListeners)
|
|
{
|
|
for (i = 0; i < mActionListeners->Count(); i++)
|
|
{
|
|
listener = (nsIEditActionListener *)mActionListeners->ElementAt(i);
|
|
if (listener)
|
|
listener->DidDeleteNode(aElement, result);
|
|
}
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
NS_IMETHODIMP nsEditor::CreateTxnForDeleteElement(nsIDOMNode * aElement,
|
|
DeleteElementTxn ** aTxn)
|
|
{
|
|
nsresult result = NS_ERROR_NULL_POINTER;
|
|
if (nsnull != aElement)
|
|
{
|
|
result = TransactionFactory::GetNewTransaction(kDeleteElementTxnIID, (EditTxn **)aTxn);
|
|
if (NS_SUCCEEDED(result)) {
|
|
result = (*aTxn)->Init(aElement);
|
|
}
|
|
}
|
|
return result;
|
|
}
|
|
|
|
NS_IMETHODIMP nsEditor::CreateAggregateTxnForDeleteSelection(nsIAtom *aTxnName, EditAggregateTxn **aAggTxn)
|
|
{
|
|
nsresult result = NS_ERROR_NULL_POINTER;
|
|
if (aAggTxn)
|
|
{
|
|
*aAggTxn = nsnull;
|
|
result = TransactionFactory::GetNewTransaction(kEditAggregateTxnIID, (EditTxn**)aAggTxn);
|
|
|
|
if (NS_FAILED(result) || !*aAggTxn) {
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
}
|
|
|
|
// Set the name for the aggregate transaction
|
|
(*aAggTxn)->SetName(aTxnName);
|
|
|
|
// Get current selection and setup txn to delete it,
|
|
// but only if selection exists (is not a collapsed "caret" state)
|
|
nsCOMPtr<nsIDOMSelection> selection;
|
|
result = mPresShell->GetSelection(getter_AddRefs(selection));
|
|
if (NS_SUCCEEDED(result) && selection)
|
|
{
|
|
PRBool collapsed;
|
|
result = selection->GetIsCollapsed(&collapsed);
|
|
if (NS_SUCCEEDED(result) && !collapsed) {
|
|
EditAggregateTxn *delSelTxn;
|
|
result = CreateTxnForDeleteSelection(nsIEditor::eDoNothing,
|
|
&delSelTxn);
|
|
if (NS_SUCCEEDED(result) && delSelTxn) {
|
|
(*aAggTxn)->AppendChild(delSelTxn);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
return result;
|
|
}
|
|
|
|
|
|
NS_IMETHODIMP
|
|
nsEditor::InsertText(const nsString& aStringToInsert)
|
|
{
|
|
EditAggregateTxn *aggTxn = nsnull;
|
|
// Create the "delete current selection" txn
|
|
nsresult result = CreateAggregateTxnForDeleteSelection(InsertTextTxn::gInsertTextTxnName, &aggTxn);
|
|
if ((NS_FAILED(result)) || (nsnull==aggTxn)) {
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
}
|
|
InsertTextTxn *txn;
|
|
result = CreateTxnForInsertText(aStringToInsert, nsnull, &txn); // insert at the current selection
|
|
if ((NS_SUCCEEDED(result)) && txn) {
|
|
aggTxn->AppendChild(txn);
|
|
result = Do(aggTxn);
|
|
}
|
|
else if (NS_ERROR_EDITOR_NO_SELECTION==result) {
|
|
result = DoInitialInsert(aStringToInsert);
|
|
}
|
|
else if (NS_ERROR_EDITOR_NO_TEXTNODE==result)
|
|
{
|
|
BeginTransaction();
|
|
nsCOMPtr<nsIDOMSelection> selection;
|
|
result = GetSelection(getter_AddRefs(selection));
|
|
if ((NS_SUCCEEDED(result)) && selection)
|
|
{
|
|
nsCOMPtr<nsIDOMNode> selectedNode;
|
|
PRInt32 offset;
|
|
result = selection->GetAnchorNode(getter_AddRefs(selectedNode));
|
|
if (NS_SUCCEEDED(result) && NS_SUCCEEDED(selection->GetAnchorOffset(&offset)) && selectedNode)
|
|
{
|
|
nsCOMPtr<nsIDOMNode> newNode;
|
|
result = CreateNode(GetTextNodeTag(), selectedNode, offset+1,
|
|
getter_AddRefs(newNode));
|
|
if (NS_SUCCEEDED(result) && newNode)
|
|
{
|
|
nsCOMPtr<nsIDOMCharacterData>newTextNode;
|
|
newTextNode = do_QueryInterface(newNode);
|
|
if (newTextNode)
|
|
{
|
|
nsAutoString placeholderText(" ");
|
|
newTextNode->SetData(placeholderText);
|
|
selection->Collapse(newNode, 0);
|
|
selection->Extend(newNode, 1);
|
|
result = InsertText(aStringToInsert);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
EndTransaction();
|
|
}
|
|
return result;
|
|
}
|
|
|
|
NS_IMETHODIMP nsEditor::CreateTxnForInsertText(const nsString & aStringToInsert,
|
|
nsIDOMCharacterData *aTextNode,
|
|
InsertTextTxn ** aTxn)
|
|
{
|
|
nsresult result;
|
|
PRInt32 offset;
|
|
nsCOMPtr<nsIDOMCharacterData> nodeAsText;
|
|
|
|
if (aTextNode) {
|
|
nodeAsText = do_QueryInterface(aTextNode);
|
|
offset = 0;
|
|
}
|
|
else
|
|
{
|
|
nsCOMPtr<nsIDOMSelection> selection;
|
|
result = mPresShell->GetSelection(getter_AddRefs(selection));
|
|
if ((NS_SUCCEEDED(result)) && selection)
|
|
{
|
|
result = NS_ERROR_UNEXPECTED;
|
|
nsCOMPtr<nsIEnumerator> enumerator;
|
|
enumerator = do_QueryInterface(selection);
|
|
if (enumerator)
|
|
{
|
|
enumerator->First();
|
|
nsISupports *currentItem;
|
|
result = enumerator->CurrentItem(¤tItem);
|
|
if ((NS_SUCCEEDED(result)) && (nsnull!=currentItem))
|
|
{
|
|
result = NS_ERROR_UNEXPECTED;
|
|
nsCOMPtr<nsIDOMRange> range( do_QueryInterface(currentItem) );
|
|
if (range)
|
|
{
|
|
nsCOMPtr<nsIDOMNode> node;
|
|
result = range->GetStartParent(getter_AddRefs(node));
|
|
if ((NS_SUCCEEDED(result)) && (node))
|
|
{
|
|
nodeAsText = do_QueryInterface(node);
|
|
range->GetStartOffset(&offset);
|
|
if (!nodeAsText) {
|
|
result = NS_ERROR_EDITOR_NO_TEXTNODE;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
result = NS_ERROR_EDITOR_NO_SELECTION;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
if (NS_SUCCEEDED(result) && nodeAsText)
|
|
{
|
|
result = TransactionFactory::GetNewTransaction(kInsertTextTxnIID, (EditTxn **)aTxn);
|
|
if (nsnull!=*aTxn) {
|
|
result = (*aTxn)->Init(nodeAsText, offset, aStringToInsert, mPresShell);
|
|
}
|
|
else {
|
|
result = NS_ERROR_OUT_OF_MEMORY;
|
|
}
|
|
}
|
|
return result;
|
|
}
|
|
|
|
// we're in the special situation where there is no selection. Insert the text
|
|
// at the beginning of the document.
|
|
// XXX: this is all logic that must be moved to the rule system
|
|
// for HTML, we create a text node on the body. That's what is done below
|
|
// for XML, we would create a text node on the root element.
|
|
// The rule system should be telling us which of these (or any other variant) to do.
|
|
/* this method should look something like
|
|
BeginTransaction()
|
|
mRule->GetNodeForInitialInsert(parentNode)
|
|
mRule->CreateInitialDocumentFragment(childNode)
|
|
InsertElement(childNode, parentNode)
|
|
find the first text node in childNode
|
|
insert the text there
|
|
*/
|
|
|
|
NS_IMETHODIMP nsEditor::DoInitialInsert(const nsString & aStringToInsert)
|
|
{
|
|
if (!mDoc) {
|
|
return NS_ERROR_NOT_INITIALIZED;
|
|
}
|
|
|
|
nsCOMPtr<nsIDOMNodeList>nodeList;
|
|
nsAutoString bodyTag = "body";
|
|
nsresult result = mDoc->GetElementsByTagName(bodyTag, getter_AddRefs(nodeList));
|
|
if ((NS_SUCCEEDED(result)) && nodeList)
|
|
{
|
|
PRUint32 count;
|
|
nodeList->GetLength(&count);
|
|
NS_ASSERTION(1==count, "there is not exactly 1 body in the document!");
|
|
nsCOMPtr<nsIDOMNode>node;
|
|
result = nodeList->Item(0, getter_AddRefs(node));
|
|
if ((NS_SUCCEEDED(result)) && node)
|
|
{ // now we've got the body tag.
|
|
// create transaction to insert the text node,
|
|
// and create a transaction to insert the text
|
|
CreateElementTxn *txn;
|
|
result = CreateTxnForCreateElement(GetTextNodeTag(), node, 0, &txn);
|
|
if ((NS_SUCCEEDED(result)) && txn)
|
|
{
|
|
result = Do(txn);
|
|
if (NS_SUCCEEDED(result))
|
|
{
|
|
nsCOMPtr<nsIDOMNode>newNode;
|
|
txn->GetNewNode(getter_AddRefs(newNode));
|
|
if ((NS_SUCCEEDED(result)) && newNode)
|
|
{
|
|
nsCOMPtr<nsIDOMCharacterData>newTextNode;
|
|
newTextNode = do_QueryInterface(newNode);
|
|
if (newTextNode)
|
|
{
|
|
InsertTextTxn *insertTxn;
|
|
result = CreateTxnForInsertText(aStringToInsert, newTextNode, &insertTxn);
|
|
if (NS_SUCCEEDED(result)) {
|
|
result = Do(insertTxn);
|
|
}
|
|
}
|
|
else {
|
|
result = NS_ERROR_UNEXPECTED;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
return result;
|
|
}
|
|
|
|
NS_IMETHODIMP nsEditor::DeleteText(nsIDOMCharacterData *aElement,
|
|
PRUint32 aOffset,
|
|
PRUint32 aLength)
|
|
{
|
|
DeleteTextTxn *txn;
|
|
nsresult result = CreateTxnForDeleteText(aElement, aOffset, aLength, &txn);
|
|
if (NS_SUCCEEDED(result)) {
|
|
result = Do(txn);
|
|
HACKForceRedraw();
|
|
}
|
|
return result;
|
|
}
|
|
|
|
|
|
NS_IMETHODIMP nsEditor::CreateTxnForDeleteText(nsIDOMCharacterData *aElement,
|
|
PRUint32 aOffset,
|
|
PRUint32 aLength,
|
|
DeleteTextTxn **aTxn)
|
|
{
|
|
nsresult result=NS_ERROR_NULL_POINTER;
|
|
if (nsnull != aElement)
|
|
{
|
|
result = TransactionFactory::GetNewTransaction(kDeleteTextTxnIID, (EditTxn **)aTxn);
|
|
if (NS_SUCCEEDED(result)) {
|
|
result = (*aTxn)->Init(this, aElement, aOffset, aLength);
|
|
}
|
|
}
|
|
return result;
|
|
}
|
|
|
|
|
|
NS_IMETHODIMP nsEditor::DeleteSelectionAndCreateNode(const nsString& aTag,
|
|
nsIDOMNode ** aNewNode)
|
|
{
|
|
nsCOMPtr<nsIDOMNode> parentSelectedNode;
|
|
PRInt32 offsetOfNewNode;
|
|
nsresult result = DeleteSelectionAndPrepareToCreateNode(parentSelectedNode,
|
|
offsetOfNewNode);
|
|
if (!NS_SUCCEEDED(result))
|
|
return result;
|
|
|
|
nsCOMPtr<nsIDOMNode> newNode;
|
|
result = CreateNode(aTag, parentSelectedNode, offsetOfNewNode,
|
|
getter_AddRefs(newNode));
|
|
|
|
*aNewNode = newNode;
|
|
|
|
// we want the selection to be just after the new node
|
|
nsCOMPtr<nsIDOMSelection> selection;
|
|
result = GetSelection(getter_AddRefs(selection));
|
|
if ((NS_SUCCEEDED(result)) && selection)
|
|
selection->Collapse(parentSelectedNode, offsetOfNewNode+1);
|
|
|
|
return result;
|
|
}
|
|
|
|
NS_IMETHODIMP nsEditor::DeleteSelectionAndPrepareToCreateNode(nsCOMPtr<nsIDOMNode> &parentSelectedNode, PRInt32& offsetOfNewNode)
|
|
{
|
|
nsresult result=NS_ERROR_NOT_INITIALIZED;
|
|
nsCOMPtr<nsIDOMSelection> selection;
|
|
result = GetSelection(getter_AddRefs(selection));
|
|
if ((NS_SUCCEEDED(result)) && selection)
|
|
{
|
|
PRBool collapsed;
|
|
result = selection->GetIsCollapsed(&collapsed);
|
|
if (NS_SUCCEEDED(result) && !collapsed)
|
|
{
|
|
result = DeleteSelection(nsIEditor::eDoNothing);
|
|
if (NS_FAILED(result)) {
|
|
return result;
|
|
}
|
|
// get the new selection
|
|
result = GetSelection(getter_AddRefs(selection));
|
|
if (NS_FAILED(result)) {
|
|
return result;
|
|
}
|
|
#ifdef NS_DEBUG
|
|
nsCOMPtr<nsIDOMNode>testSelectedNode;
|
|
nsresult debugResult = selection->GetAnchorNode(getter_AddRefs(testSelectedNode));
|
|
// no selection is ok.
|
|
// if there is a selection, it must be collapsed
|
|
if (testSelectedNode)
|
|
{
|
|
PRBool testCollapsed;
|
|
debugResult = selection->GetIsCollapsed(&testCollapsed);
|
|
NS_ASSERTION((NS_SUCCEEDED(result)), "couldn't get a selection after deletion");
|
|
NS_ASSERTION(PR_TRUE==testCollapsed, "selection not reset after deletion");
|
|
}
|
|
#endif
|
|
}
|
|
// 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);
|
|
/* if the selection is a text node, split the text node if necesary
|
|
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
|
|
}
|
|
}
|
|
}
|
|
/* if the selection is not a text node, split the parent node if necesary
|
|
and compute where to put the new node
|
|
*/
|
|
else
|
|
{ // it's an interior node
|
|
nsCOMPtr<nsIDOMNodeList>parentChildList;
|
|
parentSelectedNode->GetChildNodes(getter_AddRefs(parentChildList));
|
|
if ((NS_SUCCEEDED(result)) && parentChildList)
|
|
{
|
|
result = parentChildList->Item(offsetOfSelectedNode, getter_AddRefs(selectedNode));
|
|
if ((NS_SUCCEEDED(result)) && selectedNode)
|
|
{
|
|
nsCOMPtr<nsIDOMCharacterData>selectedNodeAsText;
|
|
selectedNodeAsText = do_QueryInterface(selectedNode);
|
|
nsCOMPtr<nsIDOMNodeList>childList;
|
|
selectedNode->GetChildNodes(getter_AddRefs(childList));
|
|
if ((NS_SUCCEEDED(result)) && childList) {
|
|
childList->GetLength(&selectedNodeContentCount);
|
|
}
|
|
else {
|
|
return NS_ERROR_NULL_POINTER;
|
|
}
|
|
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 = 0; // insert new node as first child
|
|
}
|
|
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
|
|
}
|
|
else {
|
|
printf("InsertBreak into an empty document is not yet supported\n");
|
|
}
|
|
}
|
|
return result;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsEditor::DeleteSelection(nsIEditor::ECollapsedSelectionAction aAction)
|
|
{
|
|
nsresult result;
|
|
EditAggregateTxn *txn;
|
|
result = CreateTxnForDeleteSelection(aAction, &txn);
|
|
if (NS_SUCCEEDED(result)) {
|
|
result = Do(txn);
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
NS_IMETHODIMP nsEditor::CreateTxnForDeleteSelection(nsIEditor::ECollapsedSelectionAction aAction,
|
|
EditAggregateTxn ** aTxn)
|
|
{
|
|
if (!aTxn)
|
|
return NS_ERROR_NULL_POINTER;
|
|
*aTxn = nsnull;
|
|
|
|
nsresult result;
|
|
// allocate the out-param transaction
|
|
result = TransactionFactory::GetNewTransaction(kEditAggregateTxnIID, (EditTxn **)aTxn);
|
|
if (NS_FAILED(result)) {
|
|
return result;
|
|
}
|
|
nsCOMPtr<nsIDOMSelection> selection;
|
|
result = mPresShell->GetSelection(getter_AddRefs(selection));
|
|
if ((NS_SUCCEEDED(result)) && selection)
|
|
{
|
|
nsCOMPtr<nsIEnumerator> enumerator;
|
|
enumerator = do_QueryInterface(selection);
|
|
if (enumerator)
|
|
{
|
|
for (enumerator->First(); NS_OK!=enumerator->IsDone(); enumerator->Next())
|
|
{
|
|
nsISupports *currentItem=nsnull;
|
|
result = enumerator->CurrentItem(¤tItem);
|
|
if ((NS_SUCCEEDED(result)) && (currentItem))
|
|
{
|
|
nsCOMPtr<nsIDOMRange> range( do_QueryInterface(currentItem) );
|
|
PRBool isCollapsed;
|
|
range->GetIsCollapsed(&isCollapsed);
|
|
if (PR_FALSE==isCollapsed)
|
|
{
|
|
DeleteRangeTxn *txn;
|
|
result = TransactionFactory::GetNewTransaction(kDeleteRangeTxnIID, (EditTxn **)&txn);
|
|
if ((NS_SUCCEEDED(result)) && (nsnull!=txn))
|
|
{
|
|
txn->Init(this, range);
|
|
(*aTxn)->AppendChild(txn);
|
|
}
|
|
else
|
|
result = NS_ERROR_OUT_OF_MEMORY;
|
|
}
|
|
else
|
|
{ // we have an insertion point. delete the thing in front of it or behind it, depending on aAction
|
|
result = CreateTxnForDeleteInsertionPoint(range, aAction, *aTxn);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// if we didn't build the transaction correctly, destroy the out-param transaction so we don't leak it.
|
|
if (NS_FAILED(result))
|
|
{
|
|
NS_IF_RELEASE(*aTxn);
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
|
|
//XXX: currently, this doesn't handle edge conditions because GetNext/GetPrior are not implemented
|
|
NS_IMETHODIMP
|
|
nsEditor::CreateTxnForDeleteInsertionPoint(nsIDOMRange *aRange,
|
|
nsIEditor::ECollapsedSelectionAction
|
|
aAction,
|
|
EditAggregateTxn *aTxn)
|
|
{
|
|
nsCOMPtr<nsIDOMNode> node;
|
|
PRBool isFirst;
|
|
PRBool isLast;
|
|
PRInt32 offset;
|
|
//PRInt32 length=1;
|
|
|
|
// get the node and offset of the insertion point
|
|
nsresult result = aRange->GetStartParent(getter_AddRefs(node));
|
|
if (NS_FAILED(result))
|
|
return result;
|
|
result = aRange->GetStartOffset(&offset);
|
|
if (NS_FAILED(result))
|
|
return result;
|
|
|
|
// determine if the insertion point is at the beginning, middle, or end of the node
|
|
nsCOMPtr<nsIDOMCharacterData> nodeAsText;
|
|
nsCOMPtr<nsIDOMNode> selectedNode;
|
|
nodeAsText = do_QueryInterface(node);
|
|
|
|
if (nodeAsText)
|
|
{
|
|
PRUint32 count;
|
|
nodeAsText->GetLength(&count);
|
|
isFirst = PRBool(0==offset);
|
|
isLast = PRBool(count==(PRUint32)offset);
|
|
}
|
|
else
|
|
{
|
|
// get the child list and count
|
|
nsCOMPtr<nsIDOMNodeList>childList;
|
|
PRUint32 count=0;
|
|
result = node->GetChildNodes(getter_AddRefs(childList));
|
|
if ((NS_SUCCEEDED(result)) && childList)
|
|
{
|
|
childList->GetLength(&count);
|
|
childList->Item(offset, getter_AddRefs(selectedNode));
|
|
}
|
|
isFirst = PRBool(0==offset);
|
|
isLast = PRBool((count-1)==(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 ((nsIEditor::eDeleteLeft==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, getter_AddRefs(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;
|
|
priorNodeAsText = do_QueryInterface(priorNode);
|
|
if (priorNodeAsText)
|
|
{
|
|
PRUint32 length=0;
|
|
priorNodeAsText->GetLength(&length);
|
|
if (0<length)
|
|
{
|
|
DeleteTextTxn *txn;
|
|
result = CreateTxnForDeleteText(priorNodeAsText, length-1, 1, &txn);
|
|
if (NS_SUCCEEDED(result)) {
|
|
aTxn->AppendChild(txn);
|
|
}
|
|
}
|
|
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
|
|
DeleteElementTxn *txn;
|
|
result = CreateTxnForDeleteElement(priorNode, &txn);
|
|
if (NS_SUCCEEDED(result)) {
|
|
aTxn->AppendChild(txn);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
else if ((nsIEditor::eDeleteRight==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, getter_AddRefs(nextNode));
|
|
if ((NS_SUCCEEDED(result)) && nextNode)
|
|
{ // 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> nextNodeAsText;
|
|
nextNodeAsText = do_QueryInterface(nextNode);
|
|
if (nextNodeAsText)
|
|
{
|
|
PRUint32 length=0;
|
|
nextNodeAsText->GetLength(&length);
|
|
if (0<length)
|
|
{
|
|
DeleteTextTxn *txn;
|
|
result = CreateTxnForDeleteText(nextNodeAsText, 0, 1, &txn);
|
|
if (NS_SUCCEEDED(result)) {
|
|
aTxn->AppendChild(txn);
|
|
}
|
|
}
|
|
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
|
|
DeleteElementTxn *txn;
|
|
result = CreateTxnForDeleteElement(nextNode, &txn);
|
|
if (NS_SUCCEEDED(result)) {
|
|
aTxn->AppendChild(txn);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if (nodeAsText)
|
|
{ // we have text, so delete a char at the proper offset
|
|
if (nsIEditor::eDeleteLeft==aAction) {
|
|
offset --;
|
|
}
|
|
DeleteTextTxn *txn;
|
|
result = CreateTxnForDeleteText(nodeAsText, offset, 1, &txn);
|
|
if (NS_SUCCEEDED(result)) {
|
|
aTxn->AppendChild(txn);
|
|
}
|
|
}
|
|
else
|
|
{ // we're deleting a node
|
|
DeleteElementTxn *txn;
|
|
result = CreateTxnForDeleteElement(selectedNode, &txn);
|
|
if (NS_SUCCEEDED(result)) {
|
|
aTxn->AppendChild(txn);
|
|
}
|
|
}
|
|
}
|
|
return result;
|
|
}
|
|
|
|
|
|
NS_IMETHODIMP
|
|
nsEditor::SplitNode(nsIDOMNode * aNode,
|
|
PRInt32 aOffset,
|
|
nsIDOMNode **aNewLeftNode)
|
|
{
|
|
PRInt32 i;
|
|
nsIEditActionListener *listener;
|
|
|
|
if (mActionListeners)
|
|
{
|
|
for (i = 0; i < mActionListeners->Count(); i++)
|
|
{
|
|
listener = (nsIEditActionListener *)mActionListeners->ElementAt(i);
|
|
if (listener)
|
|
listener->WillSplitNode(aNode, aOffset);
|
|
}
|
|
}
|
|
|
|
SplitElementTxn *txn;
|
|
nsresult result = CreateTxnForSplitNode(aNode, aOffset, &txn);
|
|
if (NS_SUCCEEDED(result))
|
|
{
|
|
result = Do(txn);
|
|
if (NS_SUCCEEDED(result))
|
|
{
|
|
result = txn->GetNewNode(aNewLeftNode);
|
|
NS_ASSERTION((NS_SUCCEEDED(result)), "result must succeeded for GetNewNode");
|
|
}
|
|
}
|
|
|
|
if (mActionListeners)
|
|
{
|
|
for (i = 0; i < mActionListeners->Count(); i++)
|
|
{
|
|
listener = (nsIEditActionListener *)mActionListeners->ElementAt(i);
|
|
if (listener)
|
|
{
|
|
nsIDOMNode *ptr = (aNewLeftNode) ? *aNewLeftNode : 0;
|
|
listener->DidSplitNode(aNode, aOffset, ptr, result);
|
|
}
|
|
}
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
NS_IMETHODIMP nsEditor::CreateTxnForSplitNode(nsIDOMNode *aNode,
|
|
PRUint32 aOffset,
|
|
SplitElementTxn **aTxn)
|
|
{
|
|
nsresult result=NS_ERROR_NULL_POINTER;
|
|
if (nsnull != aNode)
|
|
{
|
|
result = TransactionFactory::GetNewTransaction(kSplitElementTxnIID, (EditTxn **)aTxn);
|
|
if (NS_SUCCEEDED(result)) {
|
|
result = (*aTxn)->Init(this, aNode, aOffset);
|
|
}
|
|
}
|
|
return result;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsEditor::JoinNodes(nsIDOMNode * aLeftNode,
|
|
nsIDOMNode * aRightNode,
|
|
nsIDOMNode * aParent)
|
|
{
|
|
PRInt32 i;
|
|
nsIEditActionListener *listener;
|
|
|
|
if (mActionListeners)
|
|
{
|
|
for (i = 0; i < mActionListeners->Count(); i++)
|
|
{
|
|
listener = (nsIEditActionListener *)mActionListeners->ElementAt(i);
|
|
if (listener)
|
|
listener->WillJoinNodes(aLeftNode, aRightNode, aParent);
|
|
}
|
|
}
|
|
|
|
JoinElementTxn *txn;
|
|
nsresult result = CreateTxnForJoinNode(aLeftNode, aRightNode, &txn);
|
|
if (NS_SUCCEEDED(result)) {
|
|
result = Do(txn);
|
|
}
|
|
|
|
if (mActionListeners)
|
|
{
|
|
for (i = 0; i < mActionListeners->Count(); i++)
|
|
{
|
|
listener = (nsIEditActionListener *)mActionListeners->ElementAt(i);
|
|
if (listener)
|
|
listener->DidJoinNodes(aLeftNode, aRightNode, aParent, result);
|
|
}
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
NS_IMETHODIMP nsEditor::CreateTxnForJoinNode(nsIDOMNode *aLeftNode,
|
|
nsIDOMNode *aRightNode,
|
|
JoinElementTxn **aTxn)
|
|
{
|
|
nsresult result=NS_ERROR_NULL_POINTER;
|
|
if ((nsnull != aLeftNode) && (nsnull != aRightNode))
|
|
{
|
|
result = TransactionFactory::GetNewTransaction(kJoinElementTxnIID, (EditTxn **)aTxn);
|
|
if (NS_SUCCEEDED(result)) {
|
|
result = (*aTxn)->Init(this, aLeftNode, aRightNode);
|
|
}
|
|
}
|
|
return result;
|
|
}
|
|
|
|
|
|
// END nsEditor core implementation
|
|
|
|
// BEGIN nsEditor public static helper methods
|
|
|
|
nsresult
|
|
nsEditor::SplitNodeImpl(nsIDOMNode * aExistingRightNode,
|
|
PRInt32 aOffset,
|
|
nsIDOMNode* aNewLeftNode,
|
|
nsIDOMNode* aParent)
|
|
{
|
|
|
|
if (gNoisy) { printf("SplitNodeImpl: left=%p, right=%p, offset=%d\n", aNewLeftNode, aExistingRightNode, aOffset); }
|
|
|
|
nsresult result;
|
|
NS_ASSERTION(((nsnull!=aExistingRightNode) &&
|
|
(nsnull!=aNewLeftNode) &&
|
|
(nsnull!=aParent)),
|
|
"null arg");
|
|
if ((nsnull!=aExistingRightNode) &&
|
|
(nsnull!=aNewLeftNode) &&
|
|
(nsnull!=aParent))
|
|
{
|
|
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
|
|
nsString leftText;
|
|
rightNodeAsText->SubstringData(0, aOffset, leftText);
|
|
rightNodeAsText->DeleteData(0, aOffset);
|
|
// fix left node
|
|
leftNodeAsText->SetData(leftText);
|
|
}
|
|
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
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
else
|
|
result = NS_ERROR_INVALID_ARG;
|
|
|
|
return result;
|
|
}
|
|
|
|
nsresult
|
|
nsEditor::JoinNodesImpl(nsIDOMNode * aNodeToKeep,
|
|
nsIDOMNode * aNodeToJoin,
|
|
nsIDOMNode * aParent,
|
|
PRBool aNodeToKeepIsFirst)
|
|
{
|
|
nsresult result;
|
|
NS_ASSERTION(((nsnull!=aNodeToKeep) &&
|
|
(nsnull!=aNodeToJoin) &&
|
|
(nsnull!=aParent)),
|
|
"null arg");
|
|
if ((nsnull!=aNodeToKeep) &&
|
|
(nsnull!=aNodeToJoin) &&
|
|
(nsnull!=aParent))
|
|
{
|
|
// 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)
|
|
{
|
|
nsString rightText;
|
|
nsString 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;
|
|
childNodes->GetLength(&childCount);
|
|
nsCOMPtr<nsIDOMNode> firstNode; //only used if aNodeToKeepIsFirst is false
|
|
if (PR_FALSE==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 (PR_TRUE==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
|
|
//was result = aNodeToKeep->InsertBefore(childNode, firstNode, getter_AddRefs(resultNode));
|
|
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));
|
|
}
|
|
}
|
|
else
|
|
result = NS_ERROR_INVALID_ARG;
|
|
|
|
return result;
|
|
}
|
|
|
|
nsresult
|
|
nsEditor::GetChildOffset(nsIDOMNode *aChild, nsIDOMNode *aParent, PRInt32 &aOffset)
|
|
{
|
|
NS_ASSERTION((aChild && aParent), "bad args");
|
|
nsresult result = NS_ERROR_NULL_POINTER;
|
|
if (aChild && aParent)
|
|
{
|
|
nsCOMPtr<nsIDOMNodeList> childNodes;
|
|
result = aParent->GetChildNodes(getter_AddRefs(childNodes));
|
|
if ((NS_SUCCEEDED(result)) && (childNodes))
|
|
{
|
|
PRInt32 i=0;
|
|
for ( ; NS_SUCCEEDED(result); i++)
|
|
{
|
|
nsCOMPtr<nsIDOMNode> childNode;
|
|
result = childNodes->Item(i, getter_AddRefs(childNode));
|
|
if ((NS_SUCCEEDED(result)) && (childNode))
|
|
{
|
|
if (childNode.get()==aChild)
|
|
{
|
|
aOffset = i;
|
|
break;
|
|
}
|
|
}
|
|
else if (!childNode)
|
|
result = NS_ERROR_NULL_POINTER;
|
|
}
|
|
}
|
|
else if (!childNodes)
|
|
result = NS_ERROR_NULL_POINTER;
|
|
}
|
|
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;
|
|
nodeAsChar = do_QueryInterface(aNode);
|
|
if (nodeAsChar) {
|
|
nodeAsChar->GetLength(&aCount);
|
|
}
|
|
else
|
|
{
|
|
PRBool hasChildNodes;
|
|
aNode->HasChildNodes(&hasChildNodes);
|
|
if (PR_TRUE==hasChildNodes)
|
|
{
|
|
nsCOMPtr<nsIDOMNodeList>nodeList;
|
|
result = aNode->GetChildNodes(getter_AddRefs(nodeList));
|
|
if (NS_SUCCEEDED(result) && nodeList) {
|
|
nodeList->GetLength(&aCount);
|
|
}
|
|
}
|
|
}
|
|
return result;
|
|
}
|
|
|
|
// content-based inline vs. block query
|
|
nsresult
|
|
nsEditor::IsNodeInline(nsIDOMNode *aNode, PRBool &aIsInline)
|
|
{
|
|
// this is a content-based implementation
|
|
if (!aNode) { return NS_ERROR_NULL_POINTER; }
|
|
|
|
nsresult result;
|
|
aIsInline = PR_FALSE;
|
|
nsCOMPtr<nsIDOMElement>element;
|
|
element = do_QueryInterface(aNode);
|
|
if (element)
|
|
{
|
|
nsAutoString tag;
|
|
result = element->GetTagName(tag);
|
|
if (NS_SUCCEEDED(result))
|
|
{
|
|
nsIAtom *tagAtom = NS_NewAtom(tag);
|
|
if (!tagAtom) { return NS_ERROR_NULL_POINTER; }
|
|
if (tagAtom==nsIEditProperty::a ||
|
|
tagAtom==nsIEditProperty::b ||
|
|
tagAtom==nsIEditProperty::big ||
|
|
tagAtom==nsIEditProperty::font ||
|
|
tagAtom==nsIEditProperty::i ||
|
|
tagAtom==nsIEditProperty::span ||
|
|
tagAtom==nsIEditProperty::small ||
|
|
tagAtom==nsIEditProperty::strike ||
|
|
tagAtom==nsIEditProperty::sub ||
|
|
tagAtom==nsIEditProperty::sup ||
|
|
tagAtom==nsIEditProperty::tt ||
|
|
tagAtom==nsIEditProperty::u )
|
|
{
|
|
aIsInline = PR_TRUE;
|
|
}
|
|
}
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
nsEditor::GetBlockParent(nsIDOMNode *aNode, nsIDOMElement **aBlockParent)
|
|
{
|
|
nsresult result = NS_OK;
|
|
if (!aBlockParent) {return NS_ERROR_NULL_POINTER;}
|
|
*aBlockParent = nsnull;
|
|
nsCOMPtr<nsIDOMNode>parent;
|
|
nsCOMPtr<nsIDOMNode>temp;
|
|
result = aNode->GetParentNode(getter_AddRefs(parent));
|
|
while (NS_SUCCEEDED(result) && parent)
|
|
{
|
|
PRBool isInline;
|
|
result = IsNodeInline(parent, isInline);
|
|
if (PR_FALSE==isInline)
|
|
{
|
|
parent->QueryInterface(nsIDOMElement::GetIID(), (void**)aBlockParent);
|
|
break;
|
|
}
|
|
result = parent->GetParentNode(getter_AddRefs(temp));
|
|
parent = do_QueryInterface(temp);
|
|
}
|
|
if (gNoisy) { printf("GetBlockParent for %p returning parent %p\n", aNode, *aBlockParent); }
|
|
return result;
|
|
}
|
|
|
|
nsresult
|
|
nsEditor::GetBlockSection(nsIDOMNode *aChild,
|
|
nsIDOMNode **aLeftNode,
|
|
nsIDOMNode **aRightNode)
|
|
{
|
|
nsresult result = NS_OK;
|
|
if (!aChild || !aLeftNode || !aRightNode) {return NS_ERROR_NULL_POINTER;}
|
|
*aLeftNode = aChild;
|
|
*aRightNode = aChild;
|
|
|
|
nsCOMPtr<nsIDOMNode>sibling;
|
|
result = aChild->GetPreviousSibling(getter_AddRefs(sibling));
|
|
while ((NS_SUCCEEDED(result)) && sibling)
|
|
{
|
|
PRBool isInline;
|
|
IsNodeInline(sibling, isInline);
|
|
if (PR_FALSE==isInline)
|
|
{
|
|
nsCOMPtr<nsIDOMCharacterData>nodeAsText = do_QueryInterface(sibling);
|
|
if (!nodeAsText) {
|
|
break;
|
|
}
|
|
// XXX: needs some logic to work for other leaf nodes besides text!
|
|
}
|
|
*aLeftNode = sibling;
|
|
result = (*aLeftNode)->GetPreviousSibling(getter_AddRefs(sibling));
|
|
}
|
|
NS_ADDREF((*aLeftNode));
|
|
// now do the right side
|
|
result = aChild->GetNextSibling(getter_AddRefs(sibling));
|
|
while ((NS_SUCCEEDED(result)) && sibling)
|
|
{
|
|
PRBool isInline;
|
|
IsNodeInline(sibling, isInline);
|
|
if (PR_FALSE==isInline)
|
|
{
|
|
nsCOMPtr<nsIDOMCharacterData>nodeAsText = do_QueryInterface(sibling);
|
|
if (!nodeAsText) {
|
|
break;
|
|
}
|
|
}
|
|
*aRightNode = sibling;
|
|
result = (*aRightNode)->GetNextSibling(getter_AddRefs(sibling));
|
|
}
|
|
NS_ADDREF((*aRightNode));
|
|
if (gNoisy) { printf("GetBlockSection returning %p %p\n",
|
|
(*aLeftNode), (*aRightNode)); }
|
|
|
|
return result;
|
|
}
|
|
|
|
nsresult
|
|
nsEditor::GetBlockSectionsForRange(nsIDOMRange *aRange, nsISupportsArray *aSections)
|
|
{
|
|
if (!aRange || !aSections) {return NS_ERROR_NULL_POINTER;}
|
|
|
|
nsresult result;
|
|
nsCOMPtr<nsIContentIterator>iter;
|
|
result = nsComponentManager::CreateInstance(kCContentIteratorCID, nsnull,
|
|
kIContentIteratorIID, getter_AddRefs(iter));
|
|
if ((NS_SUCCEEDED(result)) && iter)
|
|
{
|
|
nsCOMPtr<nsIDOMRange> lastRange;
|
|
iter->Init(aRange);
|
|
nsCOMPtr<nsIContent> currentContent;
|
|
iter->CurrentNode(getter_AddRefs(currentContent));
|
|
while (NS_COMFALSE == iter->IsDone())
|
|
{
|
|
nsCOMPtr<nsIDOMNode>currentNode = do_QueryInterface(currentContent);
|
|
if (currentNode)
|
|
{
|
|
nsCOMPtr<nsIAtom> currentContentTag;
|
|
currentContent->GetTag(*getter_AddRefs(currentContentTag));
|
|
// <BR> divides block content ranges. We can achieve this by nulling out lastRange
|
|
if (nsIEditProperty::br==currentContentTag.get())
|
|
{
|
|
lastRange = do_QueryInterface(nsnull);
|
|
}
|
|
else
|
|
{
|
|
PRBool isInlineOrText;
|
|
result = IsNodeInline(currentNode, isInlineOrText);
|
|
if (PR_FALSE==isInlineOrText)
|
|
{
|
|
PRUint16 nodeType;
|
|
currentNode->GetNodeType(&nodeType);
|
|
if (nsIDOMNode::TEXT_NODE == nodeType) {
|
|
isInlineOrText = PR_TRUE;
|
|
}
|
|
}
|
|
if (PR_TRUE==isInlineOrText)
|
|
{
|
|
nsCOMPtr<nsIDOMNode>leftNode;
|
|
nsCOMPtr<nsIDOMNode>rightNode;
|
|
result = GetBlockSection(currentNode,
|
|
getter_AddRefs(leftNode),
|
|
getter_AddRefs(rightNode));
|
|
if (gNoisy) {printf("currentNode %p has block content (%p,%p)\n", currentNode.get(), leftNode.get(), rightNode.get());}
|
|
if ((NS_SUCCEEDED(result)) && leftNode && rightNode)
|
|
{
|
|
// add range to the list if it doesn't overlap with the previous range
|
|
PRBool addRange=PR_TRUE;
|
|
if (lastRange)
|
|
{
|
|
nsCOMPtr<nsIDOMNode> lastStartNode;
|
|
nsCOMPtr<nsIDOMElement> blockParentOfLastStartNode;
|
|
lastRange->GetStartParent(getter_AddRefs(lastStartNode));
|
|
result = GetBlockParent(lastStartNode, getter_AddRefs(blockParentOfLastStartNode));
|
|
if ((NS_SUCCEEDED(result)) && blockParentOfLastStartNode)
|
|
{
|
|
if (gNoisy) {printf("lastStartNode %p has block parent %p\n", lastStartNode.get(), blockParentOfLastStartNode.get());}
|
|
nsCOMPtr<nsIDOMElement> blockParentOfLeftNode;
|
|
result = GetBlockParent(leftNode, getter_AddRefs(blockParentOfLeftNode));
|
|
if ((NS_SUCCEEDED(result)) && blockParentOfLeftNode)
|
|
{
|
|
if (gNoisy) {printf("leftNode %p has block parent %p\n", leftNode.get(), blockParentOfLeftNode.get());}
|
|
if (blockParentOfLastStartNode==blockParentOfLeftNode) {
|
|
addRange = PR_FALSE;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
if (PR_TRUE==addRange)
|
|
{
|
|
if (gNoisy) {printf("adding range, setting lastRange with start node %p\n", leftNode.get());}
|
|
nsCOMPtr<nsIDOMRange> range;
|
|
result = nsComponentManager::CreateInstance(kCRangeCID, nsnull,
|
|
kIDOMRangeIID, getter_AddRefs(range));
|
|
if ((NS_SUCCEEDED(result)) && range)
|
|
{ // initialize the range
|
|
range->SetStart(leftNode, 0);
|
|
range->SetEnd(rightNode, 0);
|
|
aSections->AppendElement(range);
|
|
lastRange = do_QueryInterface(range);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
/* do not check result here, and especially do not return the result code.
|
|
* we rely on iter->IsDone to tell us when the iteration is complete
|
|
*/
|
|
iter->Next();
|
|
iter->CurrentNode(getter_AddRefs(currentContent));
|
|
}
|
|
}
|
|
return result;
|
|
}
|
|
|
|
nsresult
|
|
nsEditor::IntermediateNodesAreInline(nsIDOMRange *aRange,
|
|
nsIDOMNode *aStartNode,
|
|
PRInt32 aStartOffset,
|
|
nsIDOMNode *aEndNode,
|
|
PRInt32 aEndOffset,
|
|
PRBool &aResult)
|
|
{
|
|
aResult = PR_TRUE; // init out param. we assume the condition is true unless we find a node that violates it
|
|
if (!aStartNode || !aEndNode || !aRange) { return NS_ERROR_NULL_POINTER; }
|
|
|
|
nsCOMPtr<nsIContentIterator>iter;
|
|
nsresult result;
|
|
result = nsComponentManager::CreateInstance(kCContentIteratorCID, nsnull,
|
|
kIContentIteratorIID, getter_AddRefs(iter));
|
|
//XXX: maybe CreateInstance is expensive, and I should keep around a static iter?
|
|
// as long as this method can't be called recursively or re-entrantly!
|
|
|
|
if ((NS_SUCCEEDED(result)) && iter)
|
|
{
|
|
nsCOMPtr<nsIContent>startContent;
|
|
startContent = do_QueryInterface(aStartNode);
|
|
nsCOMPtr<nsIContent>endContent;
|
|
endContent = do_QueryInterface(aEndNode);
|
|
if (startContent && endContent)
|
|
{
|
|
iter->Init(aRange);
|
|
nsCOMPtr<nsIContent> content;
|
|
iter->CurrentNode(getter_AddRefs(content));
|
|
while (NS_COMFALSE == iter->IsDone())
|
|
{
|
|
if ((content.get() != startContent.get()) &&
|
|
(content.get() != endContent.get()))
|
|
{
|
|
nsCOMPtr<nsIDOMNode>currentNode;
|
|
currentNode = do_QueryInterface(content);
|
|
PRBool isInline=PR_FALSE;
|
|
IsNodeInline(currentNode, isInline);
|
|
if (PR_FALSE==isInline)
|
|
{
|
|
nsCOMPtr<nsIDOMCharacterData>nodeAsText;
|
|
nodeAsText = do_QueryInterface(currentNode);
|
|
if (!nodeAsText) // text nodes don't count in this check, so ignore them
|
|
{
|
|
aResult = PR_FALSE;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
/* do not check result here, and especially do not return the result code.
|
|
* we rely on iter->IsDone to tell us when the iteration is complete
|
|
*/
|
|
iter->Next();
|
|
iter->CurrentNode(getter_AddRefs(content));
|
|
}
|
|
}
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
|
|
nsresult
|
|
nsEditor::GetPriorNode(nsIDOMNode *aCurrentNode,
|
|
PRBool aEditableNode,
|
|
nsIDOMNode **aResultNode)
|
|
{
|
|
nsresult result;
|
|
if (!aCurrentNode || !aResultNode) { return NS_ERROR_NULL_POINTER; }
|
|
|
|
*aResultNode = nsnull; // init out-param
|
|
|
|
// if aCurrentNode has a left sibling, return that sibling's rightmost child (or itself if it has no children)
|
|
result = aCurrentNode->GetPreviousSibling(aResultNode);
|
|
if ((NS_SUCCEEDED(result)) && *aResultNode)
|
|
{
|
|
result = GetRightmostChild(*aResultNode, aResultNode);
|
|
if (NS_FAILED(result)) { return result; }
|
|
if (PR_FALSE==aEditableNode) {
|
|
return result;
|
|
}
|
|
if (PR_TRUE==IsEditable(*aResultNode)) {
|
|
return result;
|
|
}
|
|
else
|
|
{ // restart the search from the non-editable node we just found
|
|
nsCOMPtr<nsIDOMNode> notEditableNode = do_QueryInterface(*aResultNode);
|
|
return GetPriorNode(notEditableNode, aEditableNode, aResultNode);
|
|
}
|
|
}
|
|
|
|
// otherwise, walk up the parent change 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);
|
|
do {
|
|
nsCOMPtr<nsIDOMNode> node(parent);
|
|
result = node->GetParentNode(getter_AddRefs(parent));
|
|
if ((NS_SUCCEEDED(result)) && parent)
|
|
{
|
|
result = parent->GetPreviousSibling(getter_AddRefs(node));
|
|
if ((NS_SUCCEEDED(result)) && node)
|
|
{
|
|
result = GetRightmostChild(node, aResultNode);
|
|
if (NS_FAILED(result)) { return result; }
|
|
if (PR_FALSE==aEditableNode) {
|
|
return result;
|
|
}
|
|
if (PR_TRUE==IsEditable(*aResultNode)) {
|
|
return result;
|
|
}
|
|
else
|
|
{ // restart the search from the non-editable node we just found
|
|
nsCOMPtr<nsIDOMNode> notEditableNode = do_QueryInterface(*aResultNode);
|
|
return GetPriorNode(notEditableNode, aEditableNode, aResultNode);
|
|
}
|
|
}
|
|
}
|
|
} while ((NS_SUCCEEDED(result)) && parent);
|
|
|
|
return result;
|
|
}
|
|
|
|
nsresult
|
|
nsEditor::GetNextNode(nsIDOMNode *aCurrentNode,
|
|
PRBool aEditableNode,
|
|
nsIDOMNode **aResultNode)
|
|
{
|
|
nsresult result;
|
|
*aResultNode = nsnull;
|
|
// if aCurrentNode has a right sibling, return that sibling's leftmost child (or itself if it has no children)
|
|
result = aCurrentNode->GetNextSibling(aResultNode);
|
|
if ((NS_SUCCEEDED(result)) && *aResultNode)
|
|
{
|
|
result = GetLeftmostChild(*aResultNode, aResultNode);
|
|
if (NS_FAILED(result)) { return result; }
|
|
if (PR_FALSE==aEditableNode) {
|
|
return result;
|
|
}
|
|
if (PR_TRUE==IsEditable(*aResultNode)) {
|
|
return result;
|
|
}
|
|
else
|
|
{ // restart the search from the non-editable node we just found
|
|
nsCOMPtr<nsIDOMNode> notEditableNode = do_QueryInterface(*aResultNode);
|
|
return GetNextNode(notEditableNode, aEditableNode, aResultNode);
|
|
}
|
|
}
|
|
|
|
// otherwise, walk up the parent change 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));
|
|
do {
|
|
nsCOMPtr<nsIDOMNode> node(parent);
|
|
result = node->GetParentNode(getter_AddRefs(parent));
|
|
if ((NS_SUCCEEDED(result)) && parent)
|
|
{
|
|
result = parent->GetNextSibling(getter_AddRefs(node));
|
|
if ((NS_SUCCEEDED(result)) && node)
|
|
{
|
|
result = GetLeftmostChild(node, aResultNode);
|
|
if (NS_FAILED(result)) { return result; }
|
|
if (PR_FALSE==aEditableNode) {
|
|
return result;
|
|
}
|
|
if (PR_TRUE==IsEditable(*aResultNode)) {
|
|
return result;
|
|
}
|
|
else
|
|
{ // restart the search from the non-editable node we just found
|
|
nsCOMPtr<nsIDOMNode> notEditableNode = do_QueryInterface(*aResultNode);
|
|
return GetNextNode(notEditableNode, aEditableNode, aResultNode);
|
|
}
|
|
}
|
|
}
|
|
} while ((NS_SUCCEEDED(result)) && parent);
|
|
|
|
return result;
|
|
}
|
|
|
|
nsresult
|
|
nsEditor::GetRightmostChild(nsIDOMNode *aCurrentNode, nsIDOMNode **aResultNode)
|
|
{
|
|
nsresult result = NS_OK;
|
|
nsCOMPtr<nsIDOMNode> resultNode(do_QueryInterface(aCurrentNode));
|
|
PRBool hasChildren;
|
|
resultNode->HasChildNodes(&hasChildren);
|
|
while ((NS_SUCCEEDED(result)) && (PR_TRUE==hasChildren))
|
|
{
|
|
nsCOMPtr<nsIDOMNode> temp(resultNode);
|
|
temp->GetLastChild(getter_AddRefs(resultNode));
|
|
resultNode->HasChildNodes(&hasChildren);
|
|
}
|
|
|
|
if (NS_SUCCEEDED(result)) {
|
|
*aResultNode = resultNode;
|
|
NS_ADDREF(*aResultNode);
|
|
}
|
|
return result;
|
|
}
|
|
|
|
nsresult
|
|
nsEditor::GetLeftmostChild(nsIDOMNode *aCurrentNode, nsIDOMNode **aResultNode)
|
|
{
|
|
nsresult result = NS_OK;
|
|
nsCOMPtr<nsIDOMNode> resultNode(do_QueryInterface(aCurrentNode));
|
|
PRBool hasChildren;
|
|
resultNode->HasChildNodes(&hasChildren);
|
|
while ((NS_SUCCEEDED(result)) && (PR_TRUE==hasChildren))
|
|
{
|
|
nsCOMPtr<nsIDOMNode> temp(resultNode);
|
|
temp->GetFirstChild(getter_AddRefs(resultNode));
|
|
resultNode->HasChildNodes(&hasChildren);
|
|
}
|
|
|
|
if (NS_SUCCEEDED(result)) {
|
|
*aResultNode = resultNode;
|
|
NS_ADDREF(*aResultNode);
|
|
}
|
|
return result;
|
|
}
|
|
|
|
PRBool
|
|
nsEditor::NodeIsType(nsIDOMNode *aNode, nsIAtom *aTag)
|
|
{
|
|
nsCOMPtr<nsIDOMElement>element;
|
|
element = do_QueryInterface(aNode);
|
|
if (element)
|
|
{
|
|
nsAutoString tag;
|
|
element->GetTagName(tag);
|
|
if (tag.Equals(aTag->GetUnicode()))
|
|
{
|
|
return PR_TRUE;
|
|
}
|
|
}
|
|
return PR_FALSE;
|
|
}
|
|
|
|
PRBool
|
|
nsEditor::IsEditable(nsIDOMNode *aNode)
|
|
{
|
|
if (!aNode) return PR_FALSE;
|
|
nsCOMPtr<nsIDOMElement>element;
|
|
element = do_QueryInterface(aNode);
|
|
if (element)
|
|
{
|
|
nsAutoString att(kMOZEditorBogusNodeAttr);
|
|
nsAutoString val;
|
|
(void)element->GetAttribute(att, val);
|
|
if (val.Equals(kMOZEditorBogusNodeValue)) {
|
|
return PR_FALSE;
|
|
}
|
|
else {
|
|
return PR_TRUE;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
nsCOMPtr<nsIDOMCharacterData>text;
|
|
text = do_QueryInterface(aNode);
|
|
if (text)
|
|
{
|
|
nsAutoString data;
|
|
text->GetData(data);
|
|
PRUint32 length = data.Length();
|
|
if (0==length) {
|
|
return PR_FALSE;
|
|
}
|
|
// if the node contains only newlines, it's not editable
|
|
PRUint32 i;
|
|
for (i=0; i<length; i++)
|
|
{
|
|
if ('\n'!=data.CharAt(0)) {
|
|
return PR_TRUE;
|
|
}
|
|
}
|
|
return PR_FALSE;
|
|
}
|
|
}
|
|
return PR_TRUE;
|
|
}
|
|
|
|
//END nsEditor static utility methods
|
|
|
|
|
|
NS_IMETHODIMP nsEditor::IncDocModCount(PRInt32 inNumMods)
|
|
{
|
|
if (!mDoc) return NS_ERROR_NOT_INITIALIZED;
|
|
|
|
nsCOMPtr<nsIDiskDocument> diskDoc = do_QueryInterface(mDoc);
|
|
if (diskDoc)
|
|
diskDoc->IncrementModCount(inNumMods);
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
|
|
NS_IMETHODIMP nsEditor::GetDocModCount(PRInt32 &outModCount)
|
|
{
|
|
if (!mDoc) return NS_ERROR_NOT_INITIALIZED;
|
|
|
|
nsCOMPtr<nsIDiskDocument> diskDoc = do_QueryInterface(mDoc);
|
|
if (diskDoc)
|
|
diskDoc->GetModCount(&outModCount);
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
|
|
NS_IMETHODIMP nsEditor::ResetDocModCount()
|
|
{
|
|
if (!mDoc) return NS_ERROR_NOT_INITIALIZED;
|
|
|
|
nsCOMPtr<nsIDiskDocument> diskDoc = do_QueryInterface(mDoc);
|
|
if (diskDoc)
|
|
diskDoc->ResetModCount();
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
|
|
void nsEditor::HACKForceRedraw()
|
|
{
|
|
#ifdef HACK_FORCE_REDRAW
|
|
// XXXX: Horrible hack! We are doing this because
|
|
// of an error in Gecko which is not rendering the
|
|
// document after a change via the DOM - gpk 2/11/99
|
|
// BEGIN HACK!!!
|
|
nsCOMPtr<nsIPresShell> shell;
|
|
|
|
GetPresShell(getter_AddRefs(shell));
|
|
if (shell) {
|
|
nsCOMPtr<nsIViewManager> viewmgr;
|
|
|
|
shell->GetViewManager(getter_AddRefs(viewmgr));
|
|
if (viewmgr) {
|
|
nsIView* view;
|
|
viewmgr->GetRootView(view); // views are not refCounted
|
|
if (view) {
|
|
viewmgr->UpdateView(view,nsnull,NS_VMREFRESH_IMMEDIATE);
|
|
}
|
|
}
|
|
}
|
|
// END HACK
|
|
#endif
|
|
}
|
|
|
|
|
|
NS_IMETHODIMP nsEditor::GetLayoutObject(nsIDOMNode *aNode, nsISupports **aLayoutObject)
|
|
{
|
|
nsresult result = NS_ERROR_FAILURE; // we return an error unless we get the index
|
|
if( mPresShell != nsnull )
|
|
{
|
|
if ((nsnull!=aNode))
|
|
{ // get the content interface
|
|
nsCOMPtr<nsIContent> nodeAsContent( do_QueryInterface(aNode) );
|
|
if (nodeAsContent)
|
|
{ // get the frame from the content interface
|
|
nsISupports *layoutObject=nsnull; // frames are not ref counted, so don't use an nsCOMPtr
|
|
*aLayoutObject = nsnull;
|
|
return (NS_SUCCEEDED(mPresShell->GetLayoutObjectFor(nodeAsContent, &layoutObject)));
|
|
}
|
|
}
|
|
else {
|
|
result = NS_ERROR_NULL_POINTER;
|
|
}
|
|
}
|
|
return result;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsEditor::BeginComposition(void)
|
|
{
|
|
|
|
if ((nsITransactionManager *)nsnull!=mTxnMgr.get())
|
|
{
|
|
#ifdef DEBUG_tague
|
|
printf("nsEditor::StartComposition -- begin batch.\n");
|
|
#endif
|
|
mTxnMgr->BeginBatch();
|
|
}
|
|
|
|
if (!mIMESelectionRange)
|
|
{
|
|
nsresult result = nsComponentManager::CreateInstance(kCDOMRangeCID, nsnull,
|
|
nsIDOMRange::GetIID(),
|
|
getter_AddRefs(mIMESelectionRange));
|
|
if (NS_FAILED(result))
|
|
{
|
|
mTxnMgr->EndBatch();
|
|
return result;
|
|
}
|
|
}
|
|
|
|
mIMEFirstTransaction=PR_TRUE;
|
|
|
|
return NS_OK;
|
|
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsEditor::EndComposition(void)
|
|
{
|
|
if ((nsITransactionManager *)nsnull!=mTxnMgr.get())
|
|
{
|
|
#ifdef DEBUG_tague
|
|
printf("nsEditor::EndComposition -- end batch.\n");
|
|
#endif
|
|
mTxnMgr->EndBatch();
|
|
mIMEFirstTransaction=PR_TRUE;
|
|
return NS_OK;
|
|
}
|
|
|
|
// mIMESelectionRange = nsCOMPtr<nsIDOMRange>();
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsEditor::SetCompositionString(const nsString& aCompositionString)
|
|
{
|
|
|
|
|
|
if (mIMEFirstTransaction==PR_TRUE) {
|
|
mIMEFirstTransaction = PR_FALSE;
|
|
} else {
|
|
// printf("Undo!\n");
|
|
// mTxnMgr->Undo();
|
|
nsCOMPtr<nsIDOMSelection> selection;
|
|
nsresult result;
|
|
|
|
result = mPresShell->GetSelection(getter_AddRefs(selection));
|
|
|
|
if (NS_FAILED(result))
|
|
{
|
|
EndTransaction();
|
|
return result;
|
|
}
|
|
|
|
nsCOMPtr<nsIDOMNode> node;
|
|
PRInt32 offset;
|
|
|
|
result = mIMESelectionRange->GetStartParent(getter_AddRefs(node));
|
|
result = mIMESelectionRange->GetStartOffset(&offset);
|
|
|
|
result = selection->Collapse(node, offset);
|
|
|
|
|
|
result = mIMESelectionRange->GetEndParent(getter_AddRefs(node));
|
|
result = mIMESelectionRange->GetEndOffset(&offset);
|
|
|
|
result = selection->Extend(node, offset);
|
|
}
|
|
#ifdef DEBUG_tague
|
|
printf("nsEditor::SetCompositionString: string=%s\n",aCompositionString);
|
|
#endif
|
|
return SetPreeditText(aCompositionString);
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsEditor::DebugDumpContent() const
|
|
{
|
|
nsCOMPtr<nsIContent>content;
|
|
nsCOMPtr<nsIDOMNodeList>nodeList;
|
|
nsAutoString bodyTag = "body";
|
|
mDoc->GetElementsByTagName(bodyTag, getter_AddRefs(nodeList));
|
|
if (nodeList)
|
|
{
|
|
PRUint32 count;
|
|
nodeList->GetLength(&count);
|
|
NS_ASSERTION(1==count, "there is not exactly 1 body in the document!");
|
|
nsCOMPtr<nsIDOMNode>bodyNode;
|
|
nodeList->Item(0, getter_AddRefs(bodyNode));
|
|
if (bodyNode) {
|
|
content = do_QueryInterface(bodyNode);
|
|
}
|
|
}
|
|
content->List();
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
nsEditor::GetFirstNodeOfType(nsIDOMNode *aStartNode,
|
|
const nsString &aTag,
|
|
nsIDOMNode **aResult)
|
|
{
|
|
nsresult result=NS_OK;
|
|
|
|
if (!aStartNode)
|
|
return NS_ERROR_NULL_POINTER;
|
|
if (!aResult)
|
|
return NS_ERROR_NULL_POINTER;
|
|
|
|
nsCOMPtr<nsIDOMElement> element;
|
|
*aResult = nsnull;
|
|
nsCOMPtr<nsIDOMNode> childNode;
|
|
result = aStartNode->GetFirstChild(getter_AddRefs(childNode));
|
|
while (childNode)
|
|
{
|
|
result = childNode->QueryInterface(kIDOMNodeIID,getter_AddRefs(element));
|
|
nsAutoString tag;
|
|
if (NS_SUCCEEDED(result) && (element))
|
|
{
|
|
element->GetTagName(tag);
|
|
if (PR_TRUE==aTag.Equals(tag))
|
|
{
|
|
return (childNode->QueryInterface(kIDOMNodeIID,(void **) aResult)); // does the addref
|
|
}
|
|
else
|
|
{
|
|
result = GetFirstNodeOfType(childNode, aTag, aResult);
|
|
if (nsnull!=*aResult)
|
|
return result;
|
|
}
|
|
}
|
|
nsCOMPtr<nsIDOMNode> temp = childNode;
|
|
temp->GetNextSibling(getter_AddRefs(childNode));
|
|
}
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
nsresult
|
|
nsEditor::GetFirstTextNode(nsIDOMNode *aNode, nsIDOMNode **aRetNode)
|
|
{
|
|
if (!aNode || !aRetNode)
|
|
{
|
|
NS_NOTREACHED("GetFirstTextNode Failed");
|
|
return NS_ERROR_NULL_POINTER;
|
|
}
|
|
|
|
PRUint16 mType;
|
|
PRBool mCNodes;
|
|
|
|
nsCOMPtr<nsIDOMNode> answer;
|
|
|
|
aNode->GetNodeType(&mType);
|
|
|
|
if (nsIDOMNode::ELEMENT_NODE == mType) {
|
|
if (NS_SUCCEEDED(aNode->HasChildNodes(&mCNodes)) && PR_TRUE == mCNodes)
|
|
{
|
|
nsCOMPtr<nsIDOMNode> node1;
|
|
nsCOMPtr<nsIDOMNode> node2;
|
|
|
|
if (!NS_SUCCEEDED(aNode->GetFirstChild(getter_AddRefs(node1))))
|
|
{
|
|
NS_NOTREACHED("GetFirstTextNode Failed");
|
|
}
|
|
while(!answer && node1)
|
|
{
|
|
GetFirstTextNode(node1, getter_AddRefs(answer));
|
|
node1->GetNextSibling(getter_AddRefs(node2));
|
|
node1 = node2;
|
|
}
|
|
}
|
|
}
|
|
else if (nsIDOMNode::TEXT_NODE == mType) {
|
|
answer = do_QueryInterface(aNode);
|
|
}
|
|
|
|
// OK, now return the answer, if any
|
|
*aRetNode = answer;
|
|
if (*aRetNode)
|
|
NS_IF_ADDREF(*aRetNode);
|
|
else
|
|
return NS_ERROR_FAILURE;
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
|
|
//END nsEditor Private methods
|
|
|
|
NS_IMETHODIMP nsEditor::DoInitialPreeeditInsert(const nsString& aStringToInsert)
|
|
{
|
|
if (!mDoc) {
|
|
return NS_ERROR_NOT_INITIALIZED;
|
|
}
|
|
|
|
nsCOMPtr<nsIDOMNodeList>nodeList;
|
|
nsAutoString bodyTag = "body";
|
|
nsresult result = mDoc->GetElementsByTagName(bodyTag, getter_AddRefs(nodeList));
|
|
if ((NS_SUCCEEDED(result)) && nodeList)
|
|
{
|
|
PRUint32 count;
|
|
nodeList->GetLength(&count);
|
|
NS_ASSERTION(1==count, "there is not exactly 1 body in the document!");
|
|
nsCOMPtr<nsIDOMNode>node;
|
|
result = nodeList->Item(0, getter_AddRefs(node));
|
|
if ((NS_SUCCEEDED(result)) && node)
|
|
{ // now we've got the body tag.
|
|
// create transaction to insert the text node,
|
|
// and create a transaction to insert the text
|
|
CreateElementTxn *txn;
|
|
result = CreateTxnForCreateElement(GetTextNodeTag(), node, 0, &txn);
|
|
if ((NS_SUCCEEDED(result)) && txn)
|
|
{
|
|
result = Do(txn);
|
|
if (NS_SUCCEEDED(result))
|
|
{
|
|
nsCOMPtr<nsIDOMNode>newNode;
|
|
txn->GetNewNode(getter_AddRefs(newNode));
|
|
if ((NS_SUCCEEDED(result)) && newNode)
|
|
{
|
|
nsCOMPtr<nsIDOMCharacterData>newTextNode;
|
|
newTextNode = do_QueryInterface(newNode);
|
|
if (newTextNode)
|
|
{
|
|
InsertTextTxn *insertTxn;
|
|
result = CreateTxnForInsertText(aStringToInsert, newTextNode, &insertTxn);
|
|
if (NS_SUCCEEDED(result)) {
|
|
result = Do(insertTxn);
|
|
}
|
|
}
|
|
else {
|
|
result = NS_ERROR_UNEXPECTED;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
return result;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsEditor::SetPreeditText(const nsString& aStringToInsert)
|
|
{
|
|
nsresult result;
|
|
|
|
//EditAggregateTxn *aggTxn = nsnull;
|
|
// Create the "delete current selection" txn
|
|
nsCOMPtr<nsIDOMSelection> selection;
|
|
|
|
BeginTransaction();
|
|
|
|
result = mPresShell->GetSelection(getter_AddRefs(selection));
|
|
|
|
if (NS_SUCCEEDED(result) && selection)
|
|
{
|
|
PRBool collapsed;
|
|
result = selection->GetIsCollapsed(&collapsed);
|
|
if (NS_SUCCEEDED(result) && !collapsed) {
|
|
EditAggregateTxn *delSelTxn;
|
|
// XXX should this be eDoNothing instead of eDeleteRight?
|
|
result = CreateTxnForDeleteSelection(nsIEditor::eDeleteRight,
|
|
&delSelTxn);
|
|
if (NS_SUCCEEDED(result) && delSelTxn) {
|
|
result = Do(delSelTxn);
|
|
|
|
if (NS_FAILED(result)) {
|
|
EndTransaction();
|
|
return result;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
result = mPresShell->GetSelection(getter_AddRefs(selection));
|
|
|
|
if (NS_FAILED(result))
|
|
{
|
|
EndTransaction();
|
|
return result;
|
|
}
|
|
|
|
nsCOMPtr<nsIDOMRange> startRange;
|
|
nsCOMPtr<nsIDOMRange> endRange;
|
|
|
|
result = selection->GetRangeAt(0, getter_AddRefs(startRange));
|
|
|
|
if (NS_FAILED(result))
|
|
{
|
|
EndTransaction();
|
|
return result;
|
|
}
|
|
|
|
InsertTextTxn *txn;
|
|
result = CreateTxnForInsertText(aStringToInsert, nsnull, &txn); // insert at the current selection
|
|
if ((NS_SUCCEEDED(result)) && txn) {
|
|
result = Do(txn);
|
|
}
|
|
else if (NS_ERROR_EDITOR_NO_SELECTION==result) {
|
|
result = DoInitialInsert(aStringToInsert);
|
|
}
|
|
else if (NS_ERROR_EDITOR_NO_TEXTNODE==result)
|
|
{
|
|
result = GetSelection(getter_AddRefs(selection));
|
|
if ((NS_SUCCEEDED(result)) && selection)
|
|
{
|
|
nsCOMPtr<nsIDOMNode> selectedNode;
|
|
PRInt32 offset;
|
|
result = selection->GetAnchorNode(getter_AddRefs(selectedNode));
|
|
if (NS_SUCCEEDED(result) && NS_SUCCEEDED(selection->GetAnchorOffset(&offset)) && selectedNode)
|
|
{
|
|
nsCOMPtr<nsIDOMNode> newNode;
|
|
result = CreateNode(GetTextNodeTag(), selectedNode, offset+1,
|
|
getter_AddRefs(newNode));
|
|
if (NS_SUCCEEDED(result) && newNode)
|
|
{
|
|
nsCOMPtr<nsIDOMCharacterData>newTextNode;
|
|
newTextNode = do_QueryInterface(newNode);
|
|
if (newTextNode)
|
|
{
|
|
nsAutoString placeholderText(" ");
|
|
newTextNode->SetData(placeholderText);
|
|
selection->Collapse(newNode, 0);
|
|
selection->Extend(newNode, 1);
|
|
result = SetPreeditText(aStringToInsert);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
}
|
|
|
|
result = mPresShell->GetSelection(getter_AddRefs(selection));
|
|
|
|
if (NS_FAILED(result))
|
|
{
|
|
EndTransaction();
|
|
return result;
|
|
}
|
|
|
|
result = selection->GetRangeAt(0, getter_AddRefs(endRange));
|
|
|
|
nsCOMPtr<nsIDOMNode> node;
|
|
PRInt32 offset;
|
|
|
|
startRange->GetStartParent(getter_AddRefs(node));
|
|
startRange->GetStartOffset(&offset);
|
|
mIMESelectionRange->SetStart(node, offset);
|
|
|
|
endRange->GetStartParent(getter_AddRefs(node));
|
|
endRange->GetStartOffset(&offset);
|
|
mIMESelectionRange->SetEnd(node, offset);
|
|
|
|
EndTransaction();
|
|
HACKForceRedraw();
|
|
return result;
|
|
}
|
|
|