mirror of
https://github.com/mozilla/gecko-dev.git
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2069 lines
62 KiB
C++
2069 lines
62 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 "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 "nsIDOMNodeList.h"
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#include "nsIDOMRange.h"
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#include "nsIDocument.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 "nsICaret.h"
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#include "nsISelectionMgr.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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#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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//#define NEW_CLIPBOARD_SUPPORT
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#ifdef NEW_CLIPBOARD_SUPPORT
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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 "nsIDataFlavor.h"
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// Drag & Drop, Clipboard Support
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static NS_DEFINE_IID(kIClipboardIID, NS_ICLIPBOARD_IID);
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static NS_DEFINE_CID(kCClipboardCID, NS_CLIPBOARD_CID);
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static NS_DEFINE_IID(kITransferableIID, NS_ITRANSFERABLE_IID);
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static NS_DEFINE_CID(kCTransferableCID, NS_TRANSFERABLE_CID);
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#endif
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#endif
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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_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(kIEditorSupportIID, NS_IEDITORSUPPORT_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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#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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/* ----- 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->UnregisterFactory(kIEditFactoryIID, path);
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if (NS_FAILED(rv)) goto done;
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rv = compMgr->UnregisterFactory(kITextEditFactoryIID, path);
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if (NS_FAILED(rv)) goto done;
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rv = compMgr->UnregisterFactory(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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PR_EnterMonitor(getEditorMonitor());
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gInstanceCount++;
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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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NS_IF_RELEASE(mPresShell);
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NS_IF_RELEASE(mViewManager);
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}
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//BEGIN nsIEditor interface implementations
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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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if (aIID.Equals(kIEditorSupportIID)) {
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*aInstancePtr = (void*)(nsIEditorSupport*)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 = do_QueryInterface(aDoc);
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mPresShell = aPresShell;
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NS_ADDREF(mPresShell);
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mPresShell->GetViewManager(&mViewManager);
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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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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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}
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else {
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aCanRedo = PR_FALSE;
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}
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return NS_OK;
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}
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NS_IMETHODIMP
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nsEditor::SetProperties(nsVoidArray *aPropList)
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{
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return NS_OK;
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}
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NS_IMETHODIMP
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nsEditor::GetProperties(nsVoidArray *aPropList)
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{
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return NS_OK;
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}
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NS_IMETHODIMP
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nsEditor::SetAttribute(nsIDOMElement *aElement, const nsString& aAttribute, const nsString& aValue)
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{
|
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ChangeAttributeTxn *txn;
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nsresult result = CreateTxnForSetAttribute(aElement, aAttribute, aValue, &txn);
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if (NS_SUCCEEDED(result)) {
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result = Do(txn);
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}
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return result;
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}
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|
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;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsEditor::InsertBreak()
|
|
{
|
|
return NS_OK;
|
|
}
|
|
|
|
|
|
//END nsIEditorInterfaces
|
|
|
|
|
|
//BEGIN nsEditor Private methods
|
|
|
|
NS_IMETHODIMP
|
|
nsEditor::GetFirstNodeOfType(nsIDOMNode *aStartNode, const nsString &aTag, nsIDOMNode **aResult)
|
|
{
|
|
nsresult result=NS_OK;
|
|
|
|
if (!mDoc)
|
|
return NS_ERROR_NULL_POINTER;
|
|
if (!aResult)
|
|
return NS_ERROR_NULL_POINTER;
|
|
|
|
/* If no node set, get root node */
|
|
nsCOMPtr<nsIDOMNode> node;
|
|
nsCOMPtr<nsIDOMElement> element;
|
|
|
|
if (nsnull==aStartNode)
|
|
{
|
|
mDoc->GetDocumentElement(getter_AddRefs(element));
|
|
result = element->QueryInterface(kIDOMNodeIID,getter_AddRefs(node));
|
|
if (NS_FAILED(result))
|
|
return result;
|
|
if (!node)
|
|
return NS_ERROR_NULL_POINTER;
|
|
}
|
|
else
|
|
node = do_QueryInterface(aStartNode);
|
|
|
|
*aResult = nsnull;
|
|
nsCOMPtr<nsIDOMNode> childNode;
|
|
result = node->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
|
|
{
|
|
nsresult result = GetFirstNodeOfType(childNode, aTag, aResult);
|
|
if (nsnull!=*aResult)
|
|
return result;
|
|
}
|
|
}
|
|
nsCOMPtr<nsIDOMNode> temp = childNode;
|
|
temp->GetNextSibling(getter_AddRefs(childNode));
|
|
}
|
|
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
|
|
|
|
NS_IMETHODIMP
|
|
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;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsEditor::Do(nsITransaction *aTxn)
|
|
{
|
|
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();
|
|
}
|
|
return result;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsEditor::Undo(PRUint32 aCount)
|
|
{
|
|
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();
|
|
}
|
|
return result;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsEditor::Redo(PRUint32 aCount)
|
|
{
|
|
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();
|
|
}
|
|
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();
|
|
}
|
|
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";
|
|
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>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(eLTR);
|
|
return res;
|
|
}
|
|
|
|
extern "C" NS_EXPORT nsISelectionMgr* GetSelectionMgr();
|
|
|
|
NS_IMETHODIMP nsEditor::Copy()
|
|
{
|
|
//printf("nsEditor::Copy\n");
|
|
|
|
// Get the nsSelectionMgr:
|
|
// XXX BWEEP BWEEP TEMPORARY!
|
|
// The selection mgr needs to be a service.
|
|
// See http://bugzilla.mozilla.org/show_bug.cgi?id=3509.
|
|
// In the meantime, so I'm not blocked on writing the rest of the code,
|
|
// nsSelectionMgr uses the egregious hack of a global variable:
|
|
nsISelectionMgr* selectionMgr = GetSelectionMgr();
|
|
if (!selectionMgr)
|
|
{
|
|
printf("Can't get selection mgr!\n");
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
//NS_ADD_REF(theSelectionMgr);
|
|
return mPresShell->DoCopy(selectionMgr);
|
|
}
|
|
|
|
NS_IMETHODIMP nsEditor::Paste()
|
|
{
|
|
//printf("nsEditor::Paste\n");
|
|
nsString stuffToPaste;
|
|
|
|
#ifdef NEW_CLIPBOARD_SUPPORT
|
|
nsIClipboard* clipboard = 0;
|
|
nsresult rv = nsServiceManager::GetService(kCClipboardCID,
|
|
kIClipboardIID,
|
|
(nsISupports **)&clipboard);
|
|
nsITransferable * trans = 0;
|
|
|
|
rv = nsComponentManager::CreateInstance(kCTransferableCID, nsnull, kITransferableIID, (void**) &trans);
|
|
if (nsnull != trans) {
|
|
//trans->AddDataFlavor("text/xif", "XIF Format");
|
|
trans->AddDataFlavor(kTextMime, "Text Format");
|
|
} else {
|
|
printf("nsEditor::Paste(), trans is null.\n");
|
|
}
|
|
|
|
if(clipboard) {
|
|
clipboard->SetData(trans, nsnull);
|
|
clipboard->GetClipboard();
|
|
} else {
|
|
printf("nsEditor::Paste(), clipboard instance is null.\n");
|
|
}
|
|
|
|
if(trans) {
|
|
trans->GetTransferString(stuffToPaste);
|
|
}
|
|
|
|
NS_IF_RELEASE(clipboard);
|
|
NS_IF_RELEASE(trans);
|
|
|
|
|
|
#else
|
|
|
|
// Get the nsSelectionMgr:
|
|
// XXX BWEEP BWEEP TEMPORARY!
|
|
// The selection mgr needs to be a service.
|
|
// See http://bugzilla.mozilla.org/show_bug.cgi?id=3509.
|
|
// In the meantime, so I'm not blocked on writing the rest of the code,
|
|
// nsSelectionMgr uses the egregious hack of a global variable:
|
|
nsISelectionMgr* selectionMgr = GetSelectionMgr();
|
|
if (!selectionMgr)
|
|
{
|
|
printf("Can't get selection mgr!\n");
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
//NS_ADD_REF(theSelectionMgr);
|
|
|
|
// Now we have the selection mgr. Get its contents as text (for now):
|
|
selectionMgr->PasteTextBlocking(&stuffToPaste);
|
|
#endif
|
|
//printf("Trying to insert '%s'\n", stuffToPaste.ToNewCString());
|
|
|
|
// Now let InsertText handle the hard stuff:
|
|
return InsertText(stuffToPaste);
|
|
}
|
|
|
|
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)
|
|
{
|
|
InsertElementTxn *txn;
|
|
nsresult result = CreateTxnForInsertElement(aNode, aParent, aPosition, &txn);
|
|
if (NS_SUCCEEDED(result)) {
|
|
result = Do(txn);
|
|
}
|
|
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);
|
|
}
|
|
}
|
|
return result;
|
|
}
|
|
|
|
NS_IMETHODIMP nsEditor::DeleteNode(nsIDOMNode * aElement)
|
|
{
|
|
DeleteElementTxn *txn;
|
|
nsresult result = CreateTxnForDeleteElement(aElement, &txn);
|
|
if (NS_SUCCEEDED(result)) {
|
|
result = Do(txn);
|
|
}
|
|
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->IsCollapsed(&collapsed);
|
|
if (NS_SUCCEEDED(result) && !collapsed) {
|
|
EditAggregateTxn *delSelTxn;
|
|
result = CreateTxnForDeleteSelection(nsIEditor::eLTR, &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->GetAnchorNodeAndOffset(getter_AddRefs(selectedNode), &offset);
|
|
if ((NS_SUCCEEDED(result)) && 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,&result);
|
|
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))
|
|
{
|
|
result = NS_ERROR_UNEXPECTED;
|
|
nodeAsText = do_QueryInterface(node,&result);
|
|
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)
|
|
{
|
|
nsresult result=NS_ERROR_NOT_INITIALIZED;
|
|
nsCOMPtr<nsIDOMSelection> selection;
|
|
result = GetSelection(getter_AddRefs(selection));
|
|
if ((NS_SUCCEEDED(result)) && selection)
|
|
{
|
|
PRBool collapsed;
|
|
result = selection->IsCollapsed(&collapsed);
|
|
if (NS_SUCCEEDED(result) && !collapsed)
|
|
{
|
|
result = DeleteSelection(nsIEditor::eLTR);
|
|
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;
|
|
PRInt32 testOffset;
|
|
nsresult debugResult = selection->GetAnchorNodeAndOffset(getter_AddRefs(testSelectedNode), &testOffset);
|
|
// no selection is ok.
|
|
// if there is a selection, it must be collapsed
|
|
if (testSelectedNode)
|
|
{
|
|
PRBool testCollapsed;
|
|
debugResult = selection->IsCollapsed(&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
|
|
nsCOMPtr<nsIDOMNode> parentSelectedNode;
|
|
PRInt32 offsetOfSelectedNode;
|
|
result = selection->GetAnchorNodeAndOffset(getter_AddRefs(parentSelectedNode), &offsetOfSelectedNode);
|
|
if ((NS_SUCCEEDED(result)) && parentSelectedNode)
|
|
{
|
|
PRInt32 offsetOfNewNode;
|
|
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);
|
|
nsIEditorSupport::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 = nsIEditorSupport::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
|
|
nsIEditorSupport::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 = nsIEditorSupport::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
|
|
nsIEditorSupport::GetChildOffset(selectedNode, parentSelectedNode, offsetOfNewNode);
|
|
offsetOfNewNode++; // offsets are 0-based, and we need the index of the new node
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if (NS_SUCCEEDED(result))
|
|
{
|
|
nsCOMPtr<nsIDOMNode> newNode;
|
|
result = CreateNode(aTag, parentSelectedNode, offsetOfNewNode, getter_AddRefs(newNode));
|
|
// we want the selection to be just after the new node
|
|
selection->Collapse(parentSelectedNode, offsetOfNewNode+1);
|
|
*aNewNode = newNode;
|
|
}
|
|
}
|
|
else {
|
|
printf("InsertBreak into an empty document is not yet supported\n");
|
|
}
|
|
}
|
|
return result;
|
|
}
|
|
|
|
#define DELETE_SELECTION_DOESNT_GO_THROUGH_RANGE
|
|
|
|
NS_IMETHODIMP
|
|
nsEditor::DeleteSelection(nsIEditor::Direction aDir)
|
|
{
|
|
nsresult result;
|
|
#ifdef DELETE_SELECTION_DOESNT_GO_THROUGH_RANGE
|
|
EditAggregateTxn *txn;
|
|
result = CreateTxnForDeleteSelection(aDir, &txn);
|
|
if (NS_SUCCEEDED(result)) {
|
|
result = Do(txn);
|
|
}
|
|
#else
|
|
// XXX Warning, this should be moved to a transaction since
|
|
// calling it this way means undo won't work.
|
|
nsCOMPtr<nsIDOMSelection> selection;
|
|
result = mPresShell->GetSelection(getter_AddRefs(selection));
|
|
if (NS_SUCCEEDED(result) && selection)
|
|
result = selection->DeleteFromDocument();
|
|
#endif
|
|
|
|
return result;
|
|
}
|
|
|
|
NS_IMETHODIMP nsEditor::CreateTxnForDeleteSelection(nsIEditor::Direction aDir,
|
|
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,&result);
|
|
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 aDir
|
|
result = CreateTxnForDeleteInsertionPoint(range, aDir, *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::Direction aDir,
|
|
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::eRTL==aDir) && (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, 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, &result);
|
|
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::eLTR==aDir) && (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, 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,&result);
|
|
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::eRTL==aDir) {
|
|
offset --;
|
|
}
|
|
DeleteTextTxn *txn;
|
|
result = CreateTxnForDeleteText(nodeAsText, offset, length, &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::GetPriorNode(nsIDOMNode *aCurrentNode, nsIDOMNode **aResultNode)
|
|
{
|
|
nsresult result;
|
|
*aResultNode = nsnull;
|
|
// 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)
|
|
return GetRightmostChild(*aResultNode, 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)
|
|
{
|
|
|
|
return GetRightmostChild(node, aResultNode);
|
|
}
|
|
}
|
|
} while ((NS_SUCCEEDED(result)) && parent);
|
|
|
|
return result;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsEditor::GetNextNode(nsIDOMNode *aCurrentNode, nsIDOMNode **aResultNode)
|
|
{
|
|
nsresult result;
|
|
*aResultNode = nsnull;
|
|
// if aCurrentNode has a left sibling, return that sibling's rightmost child (or itself if it has no children)
|
|
result = aCurrentNode->GetNextSibling(aResultNode);
|
|
if ((NS_SUCCEEDED(result)) && *aResultNode)
|
|
return GetLeftmostChild(*aResultNode, 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)
|
|
{
|
|
return GetLeftmostChild(node, aResultNode);
|
|
}
|
|
}
|
|
} while ((NS_SUCCEEDED(result)) && parent);
|
|
|
|
return result;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
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;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
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;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsEditor::SplitNode(nsIDOMNode * aNode,
|
|
PRInt32 aOffset,
|
|
nsIDOMNode **aNewLeftNode)
|
|
{
|
|
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");
|
|
}
|
|
}
|
|
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)
|
|
{
|
|
JoinElementTxn *txn;
|
|
nsresult result = CreateTxnForJoinNode(aLeftNode, aRightNode, &txn);
|
|
if (NS_SUCCEEDED(result)) {
|
|
result = Do(txn);
|
|
}
|
|
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;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsEditor::SplitNodeImpl(nsIDOMNode * aExistingRightNode,
|
|
PRInt32 aOffset,
|
|
nsIDOMNode* aNewLeftNode,
|
|
nsIDOMNode* aParent)
|
|
{
|
|
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));
|
|
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
|
|
nsCOMPtr<nsIDOMNodeList> childNodes;
|
|
result = aExistingRightNode->GetChildNodes(getter_AddRefs(childNodes));
|
|
if ((NS_SUCCEEDED(result)) && (childNodes))
|
|
{
|
|
PRInt32 i=0;
|
|
for ( ; ((NS_SUCCEEDED(result)) && (i<aOffset)); i++)
|
|
{
|
|
nsCOMPtr<nsIDOMNode> childNode;
|
|
result = childNodes->Item(i, getter_AddRefs(childNode));
|
|
if ((NS_SUCCEEDED(result)) && (childNode))
|
|
{
|
|
result = aExistingRightNode->RemoveChild(childNode, getter_AddRefs(resultNode));
|
|
if (NS_SUCCEEDED(result))
|
|
{
|
|
result = aNewLeftNode->AppendChild(childNode, getter_AddRefs(resultNode));
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
else
|
|
result = NS_ERROR_INVALID_ARG;
|
|
|
|
return result;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
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))
|
|
{
|
|
PRUint32 i;
|
|
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;
|
|
for (i=0; ((NS_SUCCEEDED(result)) && (i<childCount)); i++)
|
|
{
|
|
nsCOMPtr<nsIDOMNode> childNode;
|
|
result = childNodes->Item(i, getter_AddRefs(childNode));
|
|
if ((NS_SUCCEEDED(result)) && (childNode))
|
|
{
|
|
if (PR_TRUE==aNodeToKeepIsFirst)
|
|
{ // append children of aNodeToJoin
|
|
result = aNodeToKeep->AppendChild(childNode, getter_AddRefs(resultNode));
|
|
}
|
|
else
|
|
{ // prepend children of aNodeToJoin
|
|
result = aNodeToKeep->InsertBefore(childNode, firstNode, getter_AddRefs(resultNode));
|
|
}
|
|
}
|
|
}
|
|
}
|
|
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 nsIEditorSupport::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;
|
|
}
|
|
|
|
|
|
//END nsEditor Private methods
|
|
|
|
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!!!
|
|
nsIPresShell* shell = nsnull;
|
|
|
|
GetPresShell(&shell);
|
|
if (nsnull != shell) {
|
|
nsIViewManager* viewmgr = nsnull;;
|
|
nsIView* view = nsnull;
|
|
|
|
shell->GetViewManager(&viewmgr);
|
|
if (nsnull != viewmgr) {
|
|
viewmgr->GetRootView(view);
|
|
if (nsnull != view) {
|
|
viewmgr->UpdateView(view,nsnull,NS_VMREFRESH_IMMEDIATE);
|
|
}
|
|
NS_RELEASE(viewmgr);
|
|
}
|
|
}
|
|
// 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;
|
|
}
|
|
|
|
|
|
//END nsEditor Private methods
|
|
|
|
/* ----- TEST METHODS ----- */
|
|
// Methods defined here are TEMPORARY
|
|
|
|
/* ORIGINAL version by Steve - KEEP FOR REFERENCE
|
|
NS_IMETHODIMP GetColIndexForCell(nsIPresShell *aPresShell, nsIDOMNode *aCellNode, PRInt32 &aCellIndex)
|
|
{
|
|
aCellIndex=0; // initialize out param
|
|
nsresult result = NS_ERROR_FAILURE; // we return an error unless we get the index
|
|
if ((nsnull!=aCellNode) && (nsnull!=aPresShell))
|
|
{ // get the content interface
|
|
nsCOMPtr<nsIContent> nodeAsContent(aCellNode);
|
|
if (nodeAsContent)
|
|
{ // get the frame from the content interface
|
|
nsISupports *layoutObject=nsnull; // frames are not ref counted, so don't use an nsCOMPtr
|
|
result = aPresShell->GetLayoutObjectFor(nodeAsContent, &layoutObject);
|
|
if ((NS_SUCCEEDED(result)) && (nsnull!=layoutObject))
|
|
{ // get the table cell interface from the frame
|
|
nsITableCellLayout *cellLayoutObject=nsnull; // again, frames are not ref-counted
|
|
result = layoutObject->QueryInterface(nsITableCellLayout::GetIID(), (void**)(&cellLayoutObject));
|
|
if ((NS_SUCCEEDED(result)) && (nsnull!=cellLayoutObject))
|
|
{ // get the index
|
|
result = cellLayoutObject->GetColIndex(aCellIndex);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
else {
|
|
result = NS_ERROR_NULL_POINTER;
|
|
}
|
|
return result;
|
|
}
|
|
*/
|
|
|
|
/* ----- END TEST METHODS ----- */
|
|
|
|
|
|
|
|
|
|
|