зеркало из https://github.com/mozilla/gecko-dev.git
401 строка
13 KiB
C++
401 строка
13 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
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* License Version 1.1 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.mozilla.org/NPL/
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*
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* Software distributed under the License is distributed on an "AS
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* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
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* implied. See the License for the specific language governing
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* rights and limitations under the License.
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*
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* The Original Code is Mozilla Communicator client code.
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*
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* The Initial Developer of the Original Code is Netscape Communications
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* Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All
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* Rights Reserved.
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*
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* Contributor(s):
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* Pierre Phaneuf <pp@ludusdesign.com>
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*/
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#include "nsIComponentManager.h"
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#include "nsEditorController.h"
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#include "nsIEditor.h"
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#include "nsIEditorMailSupport.h"
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#include "nsIFormControlFrame.h"
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#include "nsIDOMSelection.h"
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#include "nsIHTMLEditor.h"
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#include "nsISupportsPrimitives.h"
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#include "nsXPIDLString.h"
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#include "nsISelectionController.h"
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#include "nsIDocument.h"
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#include "nsIPresShell.h"
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#include "nsEditorCommands.h"
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#define kMaxStackCommandNameLength 128
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NS_IMPL_ADDREF(nsEditorController)
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NS_IMPL_RELEASE(nsEditorController)
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NS_INTERFACE_MAP_BEGIN(nsEditorController)
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NS_INTERFACE_MAP_ENTRY(nsIController)
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NS_INTERFACE_MAP_ENTRY(nsIEditorController)
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NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsIEditorController)
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NS_INTERFACE_MAP_END
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nsEditorController::nsEditorController()
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: mContent(NULL)
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, mEditor(NULL)
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{
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NS_INIT_REFCNT();
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}
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nsEditorController::~nsEditorController()
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{
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// if the singleton command manger has a refcount of 1 at this point, we need to
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// set it to null
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}
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NS_IMETHODIMP nsEditorController::Init()
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{
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nsresult rv;
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// get our ref to the singleton command manager
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rv = GetCommandManager(getter_AddRefs(mCommandManager));
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if (NS_FAILED(rv)) return rv;
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return rv;
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}
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#define NS_REGISTER_ONE_COMMAND(_cmdClass, _cmdName) \
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{ \
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_cmdClass* theCmd = new _cmdClass; \
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rv = RegisterOneCommand(NS_ConvertASCIItoUCS2(_cmdName).GetUnicode(), inCommandManager, theCmd); \
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}
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#define NS_REGISTER_FIRST_COMMAND(_cmdClass, _cmdName) \
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{ \
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_cmdClass* theCmd = new _cmdClass; \
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rv = RegisterOneCommand(NS_ConvertASCIItoUCS2(_cmdName).GetUnicode(), inCommandManager, theCmd); \
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#define NS_REGISTER_NEXT_COMMAND(_cmdClass, _cmdName) \
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rv = RegisterOneCommand(NS_ConvertASCIItoUCS2(_cmdName).GetUnicode(), inCommandManager, theCmd);
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#define NS_REGISTER_LAST_COMMAND(_cmdClass, _cmdName) \
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rv = RegisterOneCommand(NS_ConvertASCIItoUCS2(_cmdName).GetUnicode(), inCommandManager, theCmd); \
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}
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// static
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nsresult nsEditorController::RegisterEditorCommands(nsIControllerCommandManager *inCommandManager)
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{
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nsresult rv;
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// now register all our commands
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NS_REGISTER_ONE_COMMAND(nsUndoCommand, "cmd_undo");
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NS_REGISTER_ONE_COMMAND(nsRedoCommand, "cmd_redo");
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NS_REGISTER_ONE_COMMAND(nsCutCommand, "cmd_cut");
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NS_REGISTER_ONE_COMMAND(nsCopyCommand, "cmd_copy");
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NS_REGISTER_ONE_COMMAND(nsSelectAllCommand, "cmd_selectAll");
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NS_REGISTER_FIRST_COMMAND(nsPasteCommand, "cmd_paste");
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NS_REGISTER_LAST_COMMAND(nsPasteCommand, "cmd_pasteQuote");
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NS_REGISTER_FIRST_COMMAND(nsDeleteCommand, "cmd_delete");
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NS_REGISTER_NEXT_COMMAND(nsDeleteCommand, "cmd_deleteCharBackward");
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NS_REGISTER_NEXT_COMMAND(nsDeleteCommand, "cmd_deleteCharForward");
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NS_REGISTER_NEXT_COMMAND(nsDeleteCommand, "cmd_deleteWordBackward");
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NS_REGISTER_NEXT_COMMAND(nsDeleteCommand, "cmd_deleteWordForward");
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NS_REGISTER_NEXT_COMMAND(nsDeleteCommand, "cmd_deleteToBeginningOfLine");
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NS_REGISTER_LAST_COMMAND(nsDeleteCommand, "cmd_deleteToEndOfLine");
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NS_REGISTER_FIRST_COMMAND(nsSelectionMoveCommands, "cmd_scrollTop");
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NS_REGISTER_NEXT_COMMAND(nsSelectionMoveCommands, "cmd_scrollBottom");
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NS_REGISTER_NEXT_COMMAND(nsSelectionMoveCommands, "cmd_moveTop");
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NS_REGISTER_NEXT_COMMAND(nsSelectionMoveCommands, "cmd_moveBottom");
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NS_REGISTER_NEXT_COMMAND(nsSelectionMoveCommands, "cmd_selectTop");
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NS_REGISTER_NEXT_COMMAND(nsSelectionMoveCommands, "cmd_lineNext");
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NS_REGISTER_NEXT_COMMAND(nsSelectionMoveCommands, "cmd_linePrevious");
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NS_REGISTER_NEXT_COMMAND(nsSelectionMoveCommands, "cmd_selectLineNext");
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NS_REGISTER_NEXT_COMMAND(nsSelectionMoveCommands, "cmd_selectLinePrevious");
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NS_REGISTER_NEXT_COMMAND(nsSelectionMoveCommands, "cmd_charPrevious");
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NS_REGISTER_NEXT_COMMAND(nsSelectionMoveCommands, "cmd_charNext");
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NS_REGISTER_NEXT_COMMAND(nsSelectionMoveCommands, "cmd_selectCharPrevious");
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NS_REGISTER_NEXT_COMMAND(nsSelectionMoveCommands, "cmd_selectCharNext");
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NS_REGISTER_NEXT_COMMAND(nsSelectionMoveCommands, "cmd_beginLine");
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NS_REGISTER_NEXT_COMMAND(nsSelectionMoveCommands, "cmd_endLine");
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NS_REGISTER_NEXT_COMMAND(nsSelectionMoveCommands, "cmd_selectBeginLine");
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NS_REGISTER_NEXT_COMMAND(nsSelectionMoveCommands, "cmd_selectEndLine");
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NS_REGISTER_NEXT_COMMAND(nsSelectionMoveCommands, "cmd_wordPrevious");
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NS_REGISTER_NEXT_COMMAND(nsSelectionMoveCommands, "cmd_wordNext");
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NS_REGISTER_NEXT_COMMAND(nsSelectionMoveCommands, "cmd_selectWordPrevious");
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NS_REGISTER_NEXT_COMMAND(nsSelectionMoveCommands, "cmd_selectWordNext");
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NS_REGISTER_NEXT_COMMAND(nsSelectionMoveCommands, "cmd_scrollPageUp");
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NS_REGISTER_NEXT_COMMAND(nsSelectionMoveCommands, "cmd_scrollPageDown");
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NS_REGISTER_NEXT_COMMAND(nsSelectionMoveCommands, "cmd_scrollLineUp");
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NS_REGISTER_NEXT_COMMAND(nsSelectionMoveCommands, "cmd_scrollLineDown");
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NS_REGISTER_NEXT_COMMAND(nsSelectionMoveCommands, "cmd_movePageUp");
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NS_REGISTER_NEXT_COMMAND(nsSelectionMoveCommands, "cmd_movePageDown");
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NS_REGISTER_NEXT_COMMAND(nsSelectionMoveCommands, "cmd_selectPageUp");
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NS_REGISTER_LAST_COMMAND(nsSelectionMoveCommands, "cmd_selectPageDown");
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return NS_OK;
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}
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// static
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nsresult nsEditorController::RegisterOneCommand(const PRUnichar* aCommandName,
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nsIControllerCommandManager *inCommandManager,
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nsBaseCommand* aCommand)
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{
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nsCOMPtr<nsIControllerCommand> editorCommand;
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NS_ADDREF(aCommand);
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nsresult rv = aCommand->QueryInterface(NS_GET_IID(nsIControllerCommand), getter_AddRefs(editorCommand));
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NS_RELEASE(aCommand);
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if (NS_FAILED(rv)) return rv;
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return inCommandManager->RegisterCommand(aCommandName, editorCommand); // this is the owning ref
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}
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NS_IMETHODIMP nsEditorController::SetContent(nsIHTMLContent *aContent)
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{
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// indiscriminately sets mContent, no ref counting here
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mContent = aContent;
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return NS_OK;
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}
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NS_IMETHODIMP nsEditorController::SetEditor(nsIEditor *aEditor)
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{
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// null editors are allowed
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mEditor = aEditor;
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return NS_OK;
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}
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/* =======================================================================
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* nsIController
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* ======================================================================= */
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NS_IMETHODIMP nsEditorController::IsCommandEnabled(const PRUnichar *aCommand, PRBool *aResult)
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{
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NS_ENSURE_ARG_POINTER(aCommand);
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NS_ENSURE_ARG_POINTER(aResult);
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*aResult = PR_FALSE;
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nsCOMPtr<nsIEditor> editor;
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NS_ENSURE_SUCCESS(GetEditor(getter_AddRefs(editor)), NS_ERROR_FAILURE);
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// a null editor is a legal state
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if (!editor)
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return NS_OK; // just say we don't handle the command
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if (!mCommandManager)
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{
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NS_ASSERTION(0, "No command handler!");
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return NS_ERROR_UNEXPECTED;
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}
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// find the command
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nsCOMPtr<nsIControllerCommand> commandHandler;
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mCommandManager->FindCommandHandler(aCommand, getter_AddRefs(commandHandler));
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if (!commandHandler)
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{
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#if DEBUG
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nsCAutoString msg("EditorController asked about a command that it does not handle -- ");
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msg.AppendWithConversion(aCommand);
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NS_WARNING(msg);
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#endif
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return NS_OK; // we don't handle this command
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}
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return commandHandler->IsCommandEnabled(aCommand, editor, aResult);
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}
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NS_IMETHODIMP nsEditorController::SupportsCommand(const PRUnichar *aCommand, PRBool *aResult)
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{
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NS_ENSURE_ARG_POINTER(aCommand);
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NS_ENSURE_ARG_POINTER(aResult);
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// XXX: need to check the readonly and disabled states
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*aResult = PR_FALSE;
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// find the command
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nsCOMPtr<nsIControllerCommand> commandHandler;
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mCommandManager->FindCommandHandler(aCommand, getter_AddRefs(commandHandler));
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*aResult = (commandHandler.get() != NULL);
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return NS_OK;
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}
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NS_IMETHODIMP nsEditorController::DoCommand(const PRUnichar *aCommand)
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{
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NS_ENSURE_ARG_POINTER(aCommand);
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nsCOMPtr<nsIEditor> editor;
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nsCOMPtr<nsISelectionController> selCont;
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NS_ENSURE_SUCCESS(GetEditor(getter_AddRefs(editor)), NS_ERROR_FAILURE);
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if (!editor)
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{ // Q: What does it mean if there is no editor?
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// A: It means we've never had focus, so we can't do anything
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return NS_OK;
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}
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// find the command
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nsCOMPtr<nsIControllerCommand> commandHandler;
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mCommandManager->FindCommandHandler(aCommand, getter_AddRefs(commandHandler));
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if (!commandHandler)
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{
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#if DEBUG
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nsCAutoString msg("EditorController asked to do a command that it does not handle -- ");
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msg.AppendWithConversion(aCommand);
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NS_WARNING(msg);
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#endif
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return NS_OK; // we don't handle this command
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}
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return commandHandler->DoCommand(aCommand, editor);
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}
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NS_IMETHODIMP nsEditorController::OnEvent(const PRUnichar *aEventName)
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{
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NS_ENSURE_ARG_POINTER(aEventName);
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return NS_OK;
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}
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NS_IMETHODIMP nsEditorController::GetEditor(nsIEditor ** aEditor)
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{
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NS_ENSURE_ARG_POINTER(aEditor);
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if (mEditor)
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{
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*aEditor = mEditor;
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NS_ADDREF(*aEditor);
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return NS_OK;
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}
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return NS_OK;
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}
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NS_IMETHODIMP nsEditorController::GetSelectionController(nsISelectionController ** aSelCon)
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{
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nsCOMPtr<nsIEditor>editor;
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nsresult result = GetEditor(getter_AddRefs(editor));
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if (NS_FAILED(result) || !editor)
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return result ? result : NS_ERROR_FAILURE;
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nsCOMPtr<nsIPresShell> presShell;
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result = editor->GetPresShell(getter_AddRefs(presShell));
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if (NS_FAILED(result) || !presShell)
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return result ? result : NS_ERROR_FAILURE;
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nsCOMPtr<nsISelectionController> selController = do_QueryInterface(presShell);
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if (selController)
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{
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*aSelCon = selController;
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NS_ADDREF(*aSelCon);
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return NS_OK;
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}
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return NS_ERROR_FAILURE;
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/*
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NS_ENSURE_ARG_POINTER(aSelCon);
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nsCOMPtr<nsIDocument> doc;
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mContent->GetDocument(*getter_AddRefs(doc));
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*aSelCon = nsnull;
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if (doc)
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{
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PRInt32 i = doc->GetNumberOfShells();
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if (i == 0)
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return NS_ERROR_FAILURE;
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nsCOMPtr<nsIPresShell> presShell = getter_AddRefs(doc->GetShellAt(0));
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nsCOMPtr<nsISelectionController> selController = do_QueryInterface(presShell);
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if (selController)
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{
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*aSelCon = selController;
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(*aSelCon)->AddRef();
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return NS_OK;
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}
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}
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return NS_ERROR_FAILURE;
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*/
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}
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NS_IMETHODIMP nsEditorController::GetFrame(nsIGfxTextControlFrame **aFrame)
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{
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NS_ENSURE_ARG_POINTER(aFrame);
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//DEPRICATED. WILL REMOVE LATER
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/*
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*aFrame = nsnull;
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NS_ENSURE_STATE(mContent);
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nsIFormControlFrame *frame = nsnull;
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NS_ENSURE_SUCCESS(
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nsGenericHTMLElement::GetPrimaryFrame(mContent, frame),
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NS_ERROR_FAILURE
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);
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if (!frame) { return NS_ERROR_FAILURE; }
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NS_ENSURE_SUCCESS(
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frame->QueryInterface(NS_GET_IID(nsIGfxTextControlFrame), (void**)aFrame),
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NS_ERROR_FAILURE
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);
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*/
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return NS_OK;
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}
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PRBool nsEditorController::IsEnabled()
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{
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return PR_TRUE; // XXX: need to implement this
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/*
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PRUint32 flags=0;
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NS_ENSURE_SUCCESS(mEditor->GetFlags(&flags), NS_ERROR_FAILURE);
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check eEditorReadonlyBit and eEditorDisabledBit
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*/
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}
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#ifdef XP_MAC
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#pragma mark -
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#endif
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nsWeakPtr nsEditorController::sCommandManager = NULL;
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// static
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nsresult nsEditorController::GetCommandManager(nsIControllerCommandManager* *outCommandManager)
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{
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NS_ENSURE_ARG_POINTER(outCommandManager);
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nsCOMPtr<nsIControllerCommandManager> cmdManager = do_QueryReferent(sCommandManager);
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if (!cmdManager)
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{
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nsresult rv;
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cmdManager = do_CreateInstance("component://netscape/rdf/controller-command-manager", &rv);
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if (NS_FAILED(rv)) return rv;
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// register the commands. This just happens once per instance
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rv = nsEditorController::RegisterEditorCommands(cmdManager);
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if (NS_FAILED(rv)) return rv;
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// save the singleton in our static weak reference
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sCommandManager = getter_AddRefs(NS_GetWeakReference(cmdManager, &rv));
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if (NS_FAILED(rv)) return rv;
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}
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NS_ADDREF(*outCommandManager = cmdManager);
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return NS_OK;
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}
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