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283 строки
8.7 KiB
Plaintext
283 строки
8.7 KiB
Plaintext
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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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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* Josh Aas <josh@mozilla.com>
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* Thomas K. Dyas <tom.dyas@gmail.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 the GNU General Public License Version 2 or later (the "GPL"), or
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* 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 "nsMenuGroupOwnerX.h"
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#include "nsMenuBarX.h"
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#include "nsMenuX.h"
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#include "nsMenuItemX.h"
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#include "nsMenuUtilsX.h"
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#include "nsCocoaUtils.h"
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#include "nsCocoaWindow.h"
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#include "nsCOMPtr.h"
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#include "nsString.h"
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#include "nsGUIEvent.h"
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#include "nsObjCExceptions.h"
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#include "nsHashtable.h"
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#include "nsThreadUtils.h"
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#include "mozilla/dom/Element.h"
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#include "nsIWidget.h"
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#include "nsIDocument.h"
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#include "nsIDOMDocument.h"
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#include "nsIDOMElement.h"
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#include "nsINode.h"
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namespace dom = mozilla::dom;
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NS_IMPL_ISUPPORTS1(nsMenuGroupOwnerX, nsIMutationObserver)
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nsMenuGroupOwnerX::nsMenuGroupOwnerX()
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: mCurrentCommandID(eCommand_ID_Last),
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mDocument(nsnull)
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{
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mContentToObserverTable.Init();
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mCommandToMenuObjectTable.Init();
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}
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nsMenuGroupOwnerX::~nsMenuGroupOwnerX()
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{
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// make sure we unregister ourselves as a document observer
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if (mDocument)
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mDocument->RemoveMutationObserver(this);
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}
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nsresult nsMenuGroupOwnerX::Create(nsIContent* aContent)
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{
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if (!aContent)
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return NS_ERROR_INVALID_ARG;
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mContent = aContent;
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nsIDocument* doc = aContent->OwnerDoc();
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if (!doc)
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return NS_ERROR_FAILURE;
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doc->AddMutationObserver(this);
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mDocument = doc;
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return NS_OK;
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}
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//
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// nsIMutationObserver
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//
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void nsMenuGroupOwnerX::CharacterDataWillChange(nsIDocument* aDocument,
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nsIContent* aContent,
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CharacterDataChangeInfo* aInfo)
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{
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}
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void nsMenuGroupOwnerX::CharacterDataChanged(nsIDocument* aDocument,
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nsIContent* aContent,
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CharacterDataChangeInfo* aInfo)
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{
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}
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void nsMenuGroupOwnerX::ContentAppended(nsIDocument* aDocument,
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nsIContent* aContainer,
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nsIContent* aFirstNewContent,
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PRInt32 /* unused */)
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{
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for (nsIContent* cur = aFirstNewContent; cur; cur = cur->GetNextSibling()) {
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ContentInserted(aDocument, aContainer, cur, 0);
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}
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}
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void nsMenuGroupOwnerX::NodeWillBeDestroyed(const nsINode * aNode)
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{
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// our menu bar node is being destroyed
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mDocument = nsnull;
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}
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void nsMenuGroupOwnerX::AttributeWillChange(nsIDocument* aDocument,
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dom::Element* aContent,
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PRInt32 aNameSpaceID,
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nsIAtom* aAttribute,
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PRInt32 aModType)
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{
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}
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void nsMenuGroupOwnerX::AttributeChanged(nsIDocument* aDocument,
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dom::Element* aElement,
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PRInt32 aNameSpaceID,
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nsIAtom* aAttribute,
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PRInt32 aModType)
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{
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nsCOMPtr<nsIMutationObserver> kungFuDeathGrip(this);
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nsChangeObserver* obs = LookupContentChangeObserver(aElement);
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if (obs)
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obs->ObserveAttributeChanged(aDocument, aElement, aAttribute);
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}
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void nsMenuGroupOwnerX::ContentRemoved(nsIDocument * aDocument,
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nsIContent * aContainer,
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nsIContent * aChild,
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PRInt32 aIndexInContainer,
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nsIContent * aPreviousSibling)
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{
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if (!aContainer) {
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return;
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}
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nsCOMPtr<nsIMutationObserver> kungFuDeathGrip(this);
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nsChangeObserver* obs = LookupContentChangeObserver(aContainer);
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if (obs)
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obs->ObserveContentRemoved(aDocument, aChild, aIndexInContainer);
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else if (aContainer != mContent) {
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// We do a lookup on the parent container in case things were removed
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// under a "menupopup" item. That is basically a wrapper for the contents
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// of a "menu" node.
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nsCOMPtr<nsIContent> parent = aContainer->GetParent();
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if (parent) {
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obs = LookupContentChangeObserver(parent);
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if (obs)
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obs->ObserveContentRemoved(aDocument, aChild, aIndexInContainer);
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}
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}
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}
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void nsMenuGroupOwnerX::ContentInserted(nsIDocument * aDocument,
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nsIContent * aContainer,
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nsIContent * aChild,
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PRInt32 /* unused */)
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{
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if (!aContainer) {
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return;
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}
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nsCOMPtr<nsIMutationObserver> kungFuDeathGrip(this);
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nsChangeObserver* obs = LookupContentChangeObserver(aContainer);
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if (obs)
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obs->ObserveContentInserted(aDocument, aContainer, aChild);
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else if (aContainer != mContent) {
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// We do a lookup on the parent container in case things were removed
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// under a "menupopup" item. That is basically a wrapper for the contents
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// of a "menu" node.
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nsCOMPtr<nsIContent> parent = aContainer->GetParent();
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if (parent) {
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obs = LookupContentChangeObserver(parent);
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if (obs)
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obs->ObserveContentInserted(aDocument, aContainer, aChild);
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}
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}
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}
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void nsMenuGroupOwnerX::ParentChainChanged(nsIContent *aContent)
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{
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}
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// For change management, we don't use a |nsSupportsHashtable| because
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// we know that the lifetime of all these items is bounded by the
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// lifetime of the menubar. No need to add any more strong refs to the
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// picture because the containment hierarchy already uses strong refs.
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void nsMenuGroupOwnerX::RegisterForContentChanges(nsIContent *aContent,
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nsChangeObserver *aMenuObject)
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{
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mContentToObserverTable.Put(aContent, aMenuObject);
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}
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void nsMenuGroupOwnerX::UnregisterForContentChanges(nsIContent *aContent)
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{
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mContentToObserverTable.Remove(aContent);
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}
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nsChangeObserver* nsMenuGroupOwnerX::LookupContentChangeObserver(nsIContent* aContent)
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{
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nsChangeObserver * result;
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if (mContentToObserverTable.Get(aContent, &result))
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return result;
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else
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return nsnull;
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}
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// Given a menu item, creates a unique 4-character command ID and
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// maps it to the item. Returns the id for use by the client.
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PRUint32 nsMenuGroupOwnerX::RegisterForCommand(nsMenuItemX* inMenuItem)
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{
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// no real need to check for uniqueness. We always start afresh with each
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// window at 1. Even if we did get close to the reserved Apple command id's,
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// those don't start until at least ' ', which is integer 538976288. If
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// we have that many menu items in one window, I think we have other
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// problems.
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// make id unique
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++mCurrentCommandID;
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mCommandToMenuObjectTable.Put(mCurrentCommandID, inMenuItem);
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return mCurrentCommandID;
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}
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// Removes the mapping between the given 4-character command ID
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// and its associated menu item.
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void nsMenuGroupOwnerX::UnregisterCommand(PRUint32 inCommandID)
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{
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mCommandToMenuObjectTable.Remove(inCommandID);
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}
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nsMenuItemX* nsMenuGroupOwnerX::GetMenuItemForCommandID(PRUint32 inCommandID)
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{
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nsMenuItemX * result;
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if (mCommandToMenuObjectTable.Get(inCommandID, &result))
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return result;
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else
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return nsnull;
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}
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