/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- * * The contents of this file are subject to the Netscape Public * License Version 1.1 (the "License"); you may not use this file * except in compliance with the License. You may obtain a copy of * the License at http://www.mozilla.org/NPL/ * * Software distributed under the License is distributed on an "AS * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or * implied. See the License for the specific language governing * rights and limitations under the License. * * The Original Code is mozilla.org code. * * The Initial Developer of the Original Code is Netscape * Communications Corporation. Portions created by Netscape are * Copyright (C) 1998 Netscape Communications Corporation. All * Rights Reserved. * * Contributor(s): */ #ifndef nsInterfaceState_h__ #define nsInterfaceState_h__ #include "nsISelectionListener.h" #include "nsIDocumentStateListener.h" #include "nsITransactionListener.h" #include "nsIWebShell.h" #include "nsITimer.h" #include "nsITimerCallback.h" class nsIHTMLEditor; class nsIDOMDocument; // class responsible for communicating changes in local state back to the UI. // This is currently somewhat tied to a given XUL UI implementation class nsInterfaceState : public nsISelectionListener, public nsIDocumentStateListener, public nsITransactionListener, public nsITimerCallback { public: nsInterfaceState(); virtual ~nsInterfaceState(); NS_DECL_ISUPPORTS NS_IMETHOD Init(nsIHTMLEditor* aEditor, nsIDOMDocument *aChromeDoc); // nsISelectionListener interface NS_IMETHOD NotifySelectionChanged(nsIDOMDocument *aDoc, nsISelection *aSel, short aReason); NS_DECL_NSIDOCUMENTSTATELISTENER // nsITimerCallback interfaces NS_IMETHOD_(void) Notify(nsITimer *timer); /** nsITransactionListener interfaces */ NS_IMETHOD WillDo(nsITransactionManager *aManager, nsITransaction *aTransaction, PRBool *aInterrupt); NS_IMETHOD DidDo(nsITransactionManager *aManager, nsITransaction *aTransaction, nsresult aDoResult); NS_IMETHOD WillUndo(nsITransactionManager *aManager, nsITransaction *aTransaction, PRBool *aInterrupt); NS_IMETHOD DidUndo(nsITransactionManager *aManager, nsITransaction *aTransaction, nsresult aUndoResult); NS_IMETHOD WillRedo(nsITransactionManager *aManager, nsITransaction *aTransaction, PRBool *aInterrupt); NS_IMETHOD DidRedo(nsITransactionManager *aManager, nsITransaction *aTransaction, nsresult aRedoResult); NS_IMETHOD WillBeginBatch(nsITransactionManager *aManager, PRBool *aInterrupt); NS_IMETHOD DidBeginBatch(nsITransactionManager *aManager, nsresult aResult); NS_IMETHOD WillEndBatch(nsITransactionManager *aManager, PRBool *aInterrupt); NS_IMETHOD DidEndBatch(nsITransactionManager *aManager, nsresult aResult); NS_IMETHOD WillMerge(nsITransactionManager *aManager, nsITransaction *aTopTransaction, nsITransaction *aTransactionToMerge, PRBool *aInterrupt); NS_IMETHOD DidMerge(nsITransactionManager *aManager, nsITransaction *aTopTransaction, nsITransaction *aTransactionToMerge, PRBool aDidMerge, nsresult aMergeResult); protected: enum { eStateUninitialized = -1, eStateOff = PR_FALSE, eStateOn = PR_TRUE }; PRBool SelectionIsCollapsed(); nsresult UpdateDirtyState(PRBool aNowDirty); nsresult CallUpdateCommands(const nsString& aCommand); nsresult PrimeUpdateTimer(); void TimerCallback(); // this class should not hold references to the editor or editorShell. Doing // so would result in cirular reference chains. nsIHTMLEditor* mEditor; // the HTML editor nsIDOMDocument* mChromeDoc; // XUL document for the chrome area nsIDOMWindowInternal* mDOMWindow; // nsIDOMWindowInternal used for calling UpdateCommands nsCOMPtr mUpdateTimer; PRInt8 mDirtyState; PRInt8 mSelectionCollapsed; PRPackedBool mFirstDoOfFirstUndo; }; extern "C" nsresult NS_NewInterfaceState(nsIHTMLEditor* aEditor, nsIDOMDocument* aChromeDoc, nsISelectionListener** aInstancePtrResult); #endif // nsInterfaceState_h__