michael@0: /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
michael@0:  *
michael@0:  * This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: 
michael@0: 
michael@0: 
michael@0: #ifndef nsComposerCommandsUpdater_h__
michael@0: #define nsComposerCommandsUpdater_h__
michael@0: 
michael@0: #include "nsCOMPtr.h"                   // for already_AddRefed, nsCOMPtr
michael@0: #include "nsIDocumentStateListener.h"
michael@0: #include "nsISelectionListener.h"
michael@0: #include "nsISupportsImpl.h"            // for NS_DECL_ISUPPORTS
michael@0: #include "nsITimer.h"                   // for NS_DECL_NSITIMERCALLBACK, etc
michael@0: #include "nsITransactionListener.h"     // for nsITransactionListener
michael@0: #include "nsIWeakReferenceUtils.h"      // for nsWeakPtr
michael@0: #include "nscore.h"                     // for NS_IMETHOD, nsresult, etc
michael@0: 
michael@0: class nsIDOMWindow;
michael@0: class nsITransaction;
michael@0: class nsITransactionManager;
michael@0: class nsPICommandUpdater;
michael@0: 
michael@0: class nsComposerCommandsUpdater : public nsISelectionListener,
michael@0:                                   public nsIDocumentStateListener,
michael@0:                                   public nsITransactionListener,
michael@0:                                   public nsITimerCallback
michael@0: {
michael@0: public:
michael@0: 
michael@0:                                   nsComposerCommandsUpdater();
michael@0:   virtual                         ~nsComposerCommandsUpdater();
michael@0: 
michael@0:   // nsISupports
michael@0:   NS_DECL_ISUPPORTS
michael@0:   
michael@0:   // nsISelectionListener
michael@0:   NS_DECL_NSISELECTIONLISTENER
michael@0:   
michael@0:   // nsIDocumentStateListener
michael@0:   NS_DECL_NSIDOCUMENTSTATELISTENER
michael@0: 
michael@0:   // nsITimerCallback interfaces
michael@0:   NS_DECL_NSITIMERCALLBACK
michael@0: 
michael@0:   /** nsITransactionListener interfaces
michael@0:     */  
michael@0:   NS_IMETHOD WillDo(nsITransactionManager *aManager, nsITransaction *aTransaction, bool *aInterrupt);
michael@0:   NS_IMETHOD DidDo(nsITransactionManager *aManager, nsITransaction *aTransaction, nsresult aDoResult);
michael@0:   NS_IMETHOD WillUndo(nsITransactionManager *aManager, nsITransaction *aTransaction, bool *aInterrupt);
michael@0:   NS_IMETHOD DidUndo(nsITransactionManager *aManager, nsITransaction *aTransaction, nsresult aUndoResult);
michael@0:   NS_IMETHOD WillRedo(nsITransactionManager *aManager, nsITransaction *aTransaction, bool *aInterrupt);
michael@0:   NS_IMETHOD DidRedo(nsITransactionManager *aManager, nsITransaction *aTransaction, nsresult aRedoResult);
michael@0:   NS_IMETHOD WillBeginBatch(nsITransactionManager *aManager, bool *aInterrupt);
michael@0:   NS_IMETHOD DidBeginBatch(nsITransactionManager *aManager, nsresult aResult);
michael@0:   NS_IMETHOD WillEndBatch(nsITransactionManager *aManager, bool *aInterrupt);
michael@0:   NS_IMETHOD DidEndBatch(nsITransactionManager *aManager, nsresult aResult);
michael@0:   NS_IMETHOD WillMerge(nsITransactionManager *aManager, nsITransaction *aTopTransaction,
michael@0:                        nsITransaction *aTransactionToMerge, bool *aInterrupt);
michael@0:   NS_IMETHOD DidMerge(nsITransactionManager *aManager, nsITransaction *aTopTransaction,
michael@0:                       nsITransaction *aTransactionToMerge,
michael@0:                       bool aDidMerge, nsresult aMergeResult);
michael@0: 
michael@0: 
michael@0:   nsresult   Init(nsIDOMWindow* aDOMWindow);
michael@0: 
michael@0: protected:
michael@0: 
michael@0:   enum {
michael@0:     eStateUninitialized   = -1,
michael@0:     eStateOff             = false,
michael@0:     eStateOn              = true
michael@0:   };
michael@0:   
michael@0:   bool          SelectionIsCollapsed();
michael@0:   nsresult      UpdateDirtyState(bool aNowDirty);  
michael@0:   nsresult      UpdateOneCommand(const char* aCommand);
michael@0:   nsresult      UpdateCommandGroup(const nsAString& aCommandGroup);
michael@0: 
michael@0:   already_AddRefed<nsPICommandUpdater> GetCommandUpdater();
michael@0:   
michael@0:   nsresult      PrimeUpdateTimer();
michael@0:   void          TimerCallback();
michael@0:   nsCOMPtr<nsITimer>  mUpdateTimer;
michael@0: 
michael@0:   nsWeakPtr     mDOMWindow;
michael@0:   nsWeakPtr     mDocShell;
michael@0:   int8_t        mDirtyState;  
michael@0:   int8_t        mSelectionCollapsed;  
michael@0:   bool          mFirstDoOfFirstUndo;
michael@0:     
michael@0: 
michael@0: };
michael@0: 
michael@0: extern "C" nsresult NS_NewComposerCommandsUpdater(nsISelectionListener** aInstancePtrResult);
michael@0: 
michael@0: 
michael@0: #endif // nsComposerCommandsUpdater_h__