зеркало из https://github.com/mozilla/gecko-dev.git
418 строки
12 KiB
C++
418 строки
12 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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*
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* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is mozilla.org code.
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*
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* The Initial Developer of the Original Code is
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* Netscape Communications Corporation.
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* Portions created by the Initial Developer are Copyright (C) 1998
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Simon Fraser <sfraser@netscape.com>
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* Michael Judge <mjudge@netscape.com>
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* Charles Manske <cmanske@netscape.com>
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either of the GNU General Public License Version 2 or later (the "GPL"),
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* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#include "nsIDOMWindow.h"
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#include "nsComposerCommandsUpdater.h"
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#include "nsComponentManagerUtils.h"
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#include "nsIDOMDocument.h"
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#include "nsISelection.h"
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#include "nsIScriptGlobalObject.h"
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#include "nsIInterfaceRequestorUtils.h"
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#include "nsString.h"
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#include "nsICommandManager.h"
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#include "nsPICommandUpdater.h"
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#include "nsIDocShell.h"
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#include "nsITransactionManager.h"
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nsComposerCommandsUpdater::nsComposerCommandsUpdater()
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: mDOMWindow(nsnull)
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, mDocShell(nsnull)
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, mDirtyState(eStateUninitialized)
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, mSelectionCollapsed(eStateUninitialized)
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, mFirstDoOfFirstUndo(PR_TRUE)
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{
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}
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nsComposerCommandsUpdater::~nsComposerCommandsUpdater()
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{
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}
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NS_IMPL_ISUPPORTS4(nsComposerCommandsUpdater, nsISelectionListener,
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nsIDocumentStateListener, nsITransactionListener, nsITimerCallback)
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#if 0
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#pragma mark -
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#endif
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NS_IMETHODIMP
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nsComposerCommandsUpdater::NotifyDocumentCreated()
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{
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// Trigger an nsIObserve notification that the document has been created
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UpdateOneCommand("obs_documentCreated");
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return NS_OK;
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}
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NS_IMETHODIMP
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nsComposerCommandsUpdater::NotifyDocumentWillBeDestroyed()
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{
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// cancel any outstanding udpate timer
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if (mUpdateTimer)
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{
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mUpdateTimer->Cancel();
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mUpdateTimer = nsnull;
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}
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// We can't call this right now; it is too late in some cases and the window
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// is already partially destructed (e.g. JS objects may be gone).
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#if 0
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// Trigger an nsIObserve notification that the document will be destroyed
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UpdateOneCommand("obs_documentWillBeDestroyed");
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#endif
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return NS_OK;
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}
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NS_IMETHODIMP
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nsComposerCommandsUpdater::NotifyDocumentStateChanged(PRBool aNowDirty)
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{
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// update document modified. We should have some other notifications for this too.
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return UpdateDirtyState(aNowDirty);
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}
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NS_IMETHODIMP
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nsComposerCommandsUpdater::NotifySelectionChanged(nsIDOMDocument *,
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nsISelection *, short)
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{
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return PrimeUpdateTimer();
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}
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#if 0
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#pragma mark -
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#endif
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NS_IMETHODIMP
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nsComposerCommandsUpdater::WillDo(nsITransactionManager *aManager,
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nsITransaction *aTransaction, PRBool *aInterrupt)
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{
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*aInterrupt = PR_FALSE;
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return NS_OK;
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}
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NS_IMETHODIMP
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nsComposerCommandsUpdater::DidDo(nsITransactionManager *aManager,
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nsITransaction *aTransaction, nsresult aDoResult)
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{
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// only need to update if the status of the Undo menu item changes.
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PRInt32 undoCount;
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aManager->GetNumberOfUndoItems(&undoCount);
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if (undoCount == 1)
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{
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if (mFirstDoOfFirstUndo)
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UpdateCommandGroup(NS_LITERAL_STRING("undo"));
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mFirstDoOfFirstUndo = 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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nsComposerCommandsUpdater::WillUndo(nsITransactionManager *aManager,
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nsITransaction *aTransaction,
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PRBool *aInterrupt)
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{
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*aInterrupt = PR_FALSE;
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return NS_OK;
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}
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NS_IMETHODIMP
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nsComposerCommandsUpdater::DidUndo(nsITransactionManager *aManager,
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nsITransaction *aTransaction,
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nsresult aUndoResult)
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{
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PRInt32 undoCount;
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aManager->GetNumberOfUndoItems(&undoCount);
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if (undoCount == 0)
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mFirstDoOfFirstUndo = PR_TRUE; // reset the state for the next do
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UpdateCommandGroup(NS_LITERAL_STRING("undo"));
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return NS_OK;
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}
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NS_IMETHODIMP
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nsComposerCommandsUpdater::WillRedo(nsITransactionManager *aManager,
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nsITransaction *aTransaction,
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PRBool *aInterrupt)
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{
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*aInterrupt = PR_FALSE;
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return NS_OK;
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}
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NS_IMETHODIMP
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nsComposerCommandsUpdater::DidRedo(nsITransactionManager *aManager,
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nsITransaction *aTransaction,
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nsresult aRedoResult)
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{
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UpdateCommandGroup(NS_LITERAL_STRING("undo"));
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return NS_OK;
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}
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NS_IMETHODIMP
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nsComposerCommandsUpdater::WillBeginBatch(nsITransactionManager *aManager,
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PRBool *aInterrupt)
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{
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*aInterrupt = PR_FALSE;
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return NS_OK;
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}
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NS_IMETHODIMP
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nsComposerCommandsUpdater::DidBeginBatch(nsITransactionManager *aManager,
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nsresult aResult)
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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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nsComposerCommandsUpdater::WillEndBatch(nsITransactionManager *aManager,
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PRBool *aInterrupt)
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{
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*aInterrupt = PR_FALSE;
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return NS_OK;
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}
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NS_IMETHODIMP
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nsComposerCommandsUpdater::DidEndBatch(nsITransactionManager *aManager,
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nsresult aResult)
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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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nsComposerCommandsUpdater::WillMerge(nsITransactionManager *aManager,
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nsITransaction *aTopTransaction,
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nsITransaction *aTransactionToMerge,
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PRBool *aInterrupt)
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{
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*aInterrupt = PR_FALSE;
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return NS_OK;
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}
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NS_IMETHODIMP
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nsComposerCommandsUpdater::DidMerge(nsITransactionManager *aManager,
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nsITransaction *aTopTransaction,
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nsITransaction *aTransactionToMerge,
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PRBool aDidMerge, nsresult aMergeResult)
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{
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return NS_OK;
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}
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#if 0
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#pragma mark -
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#endif
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nsresult
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nsComposerCommandsUpdater::Init(nsIDOMWindow* aDOMWindow)
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{
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NS_ENSURE_ARG(aDOMWindow);
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mDOMWindow = aDOMWindow;
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nsCOMPtr<nsIScriptGlobalObject> scriptObject(do_QueryInterface(aDOMWindow));
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if (scriptObject)
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{
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mDocShell = scriptObject->GetDocShell();
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}
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return NS_OK;
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}
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nsresult
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nsComposerCommandsUpdater::PrimeUpdateTimer()
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{
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if (!mUpdateTimer)
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{
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nsresult rv = NS_OK;
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mUpdateTimer = do_CreateInstance("@mozilla.org/timer;1", &rv);
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if (NS_FAILED(rv)) return rv;
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}
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const PRUint32 kUpdateTimerDelay = 150;
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return mUpdateTimer->InitWithCallback(NS_STATIC_CAST(nsITimerCallback*, this),
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kUpdateTimerDelay,
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nsITimer::TYPE_ONE_SHOT);
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}
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void nsComposerCommandsUpdater::TimerCallback()
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{
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// if the selection state has changed, update stuff
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PRBool isCollapsed = SelectionIsCollapsed();
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if (isCollapsed != mSelectionCollapsed)
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{
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UpdateCommandGroup(NS_LITERAL_STRING("select"));
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mSelectionCollapsed = isCollapsed;
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}
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// isn't this redundant with the UpdateCommandGroup above?
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// can we just nuke the above call? or create a meta command group?
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UpdateCommandGroup(NS_LITERAL_STRING("style"));
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}
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nsresult
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nsComposerCommandsUpdater::UpdateDirtyState(PRBool aNowDirty)
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{
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if (mDirtyState != aNowDirty)
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{
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UpdateCommandGroup(NS_LITERAL_STRING("save"));
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UpdateCommandGroup(NS_LITERAL_STRING("undo"));
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mDirtyState = aNowDirty;
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}
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return NS_OK;
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}
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nsresult
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nsComposerCommandsUpdater::UpdateCommandGroup(const nsAString& aCommandGroup)
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{
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if (!mDocShell) return NS_ERROR_FAILURE;
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nsCOMPtr<nsICommandManager> commandManager = do_GetInterface(mDocShell);
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nsCOMPtr<nsPICommandUpdater> commandUpdater = do_QueryInterface(commandManager);
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if (!commandUpdater) return NS_ERROR_FAILURE;
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// This hardcoded list of commands is temporary.
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// This code should use nsIControllerCommandGroup.
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if (aCommandGroup.EqualsLiteral("undo"))
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{
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commandUpdater->CommandStatusChanged("cmd_undo");
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commandUpdater->CommandStatusChanged("cmd_redo");
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}
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else if (aCommandGroup.EqualsLiteral("select") ||
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aCommandGroup.EqualsLiteral("style"))
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{
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commandUpdater->CommandStatusChanged("cmd_bold");
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commandUpdater->CommandStatusChanged("cmd_italic");
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commandUpdater->CommandStatusChanged("cmd_underline");
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commandUpdater->CommandStatusChanged("cmd_tt");
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commandUpdater->CommandStatusChanged("cmd_strikethrough");
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commandUpdater->CommandStatusChanged("cmd_superscript");
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commandUpdater->CommandStatusChanged("cmd_subscript");
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commandUpdater->CommandStatusChanged("cmd_nobreak");
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commandUpdater->CommandStatusChanged("cmd_em");
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commandUpdater->CommandStatusChanged("cmd_strong");
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commandUpdater->CommandStatusChanged("cmd_cite");
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commandUpdater->CommandStatusChanged("cmd_abbr");
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commandUpdater->CommandStatusChanged("cmd_acronym");
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commandUpdater->CommandStatusChanged("cmd_code");
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commandUpdater->CommandStatusChanged("cmd_samp");
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commandUpdater->CommandStatusChanged("cmd_var");
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commandUpdater->CommandStatusChanged("cmd_increaseFont");
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commandUpdater->CommandStatusChanged("cmd_decreaseFont");
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commandUpdater->CommandStatusChanged("cmd_paragraphState");
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commandUpdater->CommandStatusChanged("cmd_fontFace");
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commandUpdater->CommandStatusChanged("cmd_fontColor");
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commandUpdater->CommandStatusChanged("cmd_backgroundColor");
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commandUpdater->CommandStatusChanged("cmd_highlight");
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}
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else if (aCommandGroup.EqualsLiteral("save"))
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{
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// save commands (most are not in C++)
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commandUpdater->CommandStatusChanged("cmd_setDocumentModified");
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commandUpdater->CommandStatusChanged("cmd_save");
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}
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return NS_OK;
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}
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nsresult
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nsComposerCommandsUpdater::UpdateOneCommand(const char *aCommand)
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{
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if (!mDocShell) return NS_ERROR_FAILURE;
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nsCOMPtr<nsICommandManager> commandManager = do_GetInterface(mDocShell);
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nsCOMPtr<nsPICommandUpdater> commandUpdater = do_QueryInterface(commandManager);
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if (!commandUpdater) return NS_ERROR_FAILURE;
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commandUpdater->CommandStatusChanged(aCommand);
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return NS_OK;
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}
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PRBool
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nsComposerCommandsUpdater::SelectionIsCollapsed()
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{
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if (!mDOMWindow) return PR_TRUE;
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nsCOMPtr<nsISelection> domSelection;
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if (NS_SUCCEEDED(mDOMWindow->GetSelection(getter_AddRefs(domSelection))) && domSelection)
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{
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PRBool selectionCollapsed = PR_FALSE;
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domSelection->GetIsCollapsed(&selectionCollapsed);
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return selectionCollapsed;
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}
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NS_WARNING("nsComposerCommandsUpdater::SelectionIsCollapsed - no domSelection");
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return PR_FALSE;
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}
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#if 0
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#pragma mark -
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#endif
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nsresult
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nsComposerCommandsUpdater::Notify(nsITimer *timer)
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{
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NS_ASSERTION(timer == mUpdateTimer.get(), "Hey, this ain't my timer!");
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TimerCallback();
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return NS_OK;
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}
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#if 0
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#pragma mark -
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#endif
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nsresult
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NS_NewComposerCommandsUpdater(nsISelectionListener** aInstancePtrResult)
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{
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nsComposerCommandsUpdater* newThang = new nsComposerCommandsUpdater;
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if (!newThang)
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return NS_ERROR_OUT_OF_MEMORY;
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return newThang->QueryInterface(NS_GET_IID(nsISelectionListener),
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(void **)aInstancePtrResult);
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}
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