editor/composer/nsComposerCommandsUpdater.h
author Chris H-C <chutten@mozilla.com>
Mon, 04 Jul 2016 11:16:05 -0400
changeset 312997 df28918fe2361f0b54ca9ce4773a29c4c0675d06
parent 282426 e22b3043887ed36bf2c634c2924a7c8d39d226b1
permissions -rw-r--r--
bug 1218576 - Support remote accumulation via JS histograms. r=gfritzsche The JS histograms, too, need to dispatch their accumulations from child to parent. JSHistograms_Add now only supports histograms that are in gHistogramsMap or that were created in the parent process. After bug 1288745, maybe we'll be able to change this to be less convoluted. MozReview-Commit-ID: 3qTH89YKbGP

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
 *
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */




#ifndef nsComposerCommandsUpdater_h__
#define nsComposerCommandsUpdater_h__

#include "nsCOMPtr.h"                   // for already_AddRefed, nsCOMPtr
#include "nsIDocumentStateListener.h"
#include "nsISelectionListener.h"
#include "nsISupportsImpl.h"            // for NS_DECL_ISUPPORTS
#include "nsITimer.h"                   // for NS_DECL_NSITIMERCALLBACK, etc
#include "nsITransactionListener.h"     // for nsITransactionListener
#include "nsIWeakReferenceUtils.h"      // for nsWeakPtr
#include "nscore.h"                     // for NS_IMETHOD, nsresult, etc

class nsPIDOMWindowOuter;
class nsITransaction;
class nsITransactionManager;
class nsPICommandUpdater;

class nsComposerCommandsUpdater : public nsISelectionListener,
                                  public nsIDocumentStateListener,
                                  public nsITransactionListener,
                                  public nsITimerCallback
{
public:

                                  nsComposerCommandsUpdater();

  // nsISupports
  NS_DECL_ISUPPORTS

  // nsISelectionListener
  NS_DECL_NSISELECTIONLISTENER

  // nsIDocumentStateListener
  NS_DECL_NSIDOCUMENTSTATELISTENER

  // nsITimerCallback interfaces
  NS_DECL_NSITIMERCALLBACK

  /** nsITransactionListener interfaces
    */
  NS_IMETHOD WillDo(nsITransactionManager *aManager, nsITransaction *aTransaction, bool *aInterrupt) override;
  NS_IMETHOD DidDo(nsITransactionManager *aManager, nsITransaction *aTransaction, nsresult aDoResult) override;
  NS_IMETHOD WillUndo(nsITransactionManager *aManager, nsITransaction *aTransaction, bool *aInterrupt) override;
  NS_IMETHOD DidUndo(nsITransactionManager *aManager, nsITransaction *aTransaction, nsresult aUndoResult) override;
  NS_IMETHOD WillRedo(nsITransactionManager *aManager, nsITransaction *aTransaction, bool *aInterrupt) override;
  NS_IMETHOD DidRedo(nsITransactionManager *aManager, nsITransaction *aTransaction, nsresult aRedoResult) override;
  NS_IMETHOD WillBeginBatch(nsITransactionManager *aManager, bool *aInterrupt) override;
  NS_IMETHOD DidBeginBatch(nsITransactionManager *aManager, nsresult aResult) override;
  NS_IMETHOD WillEndBatch(nsITransactionManager *aManager, bool *aInterrupt) override;
  NS_IMETHOD DidEndBatch(nsITransactionManager *aManager, nsresult aResult) override;
  NS_IMETHOD WillMerge(nsITransactionManager *aManager, nsITransaction *aTopTransaction,
                       nsITransaction *aTransactionToMerge, bool *aInterrupt) override;
  NS_IMETHOD DidMerge(nsITransactionManager *aManager, nsITransaction *aTopTransaction,
                      nsITransaction *aTransactionToMerge,
                      bool aDidMerge, nsresult aMergeResult) override;


  nsresult   Init(nsPIDOMWindowOuter* aDOMWindow);

protected:

  virtual ~nsComposerCommandsUpdater();

  enum {
    eStateUninitialized   = -1,
    eStateOff             = false,
    eStateOn              = true
  };

  bool          SelectionIsCollapsed();
  nsresult      UpdateDirtyState(bool aNowDirty);
  nsresult      UpdateOneCommand(const char* aCommand);
  nsresult      UpdateCommandGroup(const nsAString& aCommandGroup);

  already_AddRefed<nsPICommandUpdater> GetCommandUpdater();

  nsresult      PrimeUpdateTimer();
  void          TimerCallback();
  nsCOMPtr<nsITimer>  mUpdateTimer;

  nsWeakPtr     mDOMWindow;
  nsWeakPtr     mDocShell;
  int8_t        mDirtyState;
  int8_t        mSelectionCollapsed;
  bool          mFirstDoOfFirstUndo;


};

extern "C" nsresult NS_NewComposerCommandsUpdater(nsISelectionListener** aInstancePtrResult);


#endif // nsComposerCommandsUpdater_h__