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151 lines
5.5 KiB
C++
151 lines
5.5 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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*
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* The contents of this file are subject to the Netscape Public
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* License Version 1.1 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.mozilla.org/NPL/
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*
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* Software distributed under the License is distributed on an "AS
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* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
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* implied. See the License for the specific language governing
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* rights and limitations under the 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 Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All
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* Rights Reserved.
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*
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* Contributor(s):
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*/
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#ifndef nsInterfaceState_h__
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#define nsInterfaceState_h__
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#include "nsIDOMSelectionListener.h"
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#include "nsIDocumentStateListener.h"
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#include "nsITransactionListener.h"
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#include "nsIWebShell.h"
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#include "nsITimer.h"
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#include "nsITimerCallback.h"
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class nsIHTMLEditor;
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class nsIDOMXULDocument;
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// class responsible for communicating changes in local state back to the UI.
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// This is currently somewhat tied to a given XUL UI implementation
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class nsInterfaceState : public nsIDOMSelectionListener,
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public nsIDocumentStateListener,
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public nsITransactionListener,
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public nsITimerCallback
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{
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public:
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nsInterfaceState();
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virtual ~nsInterfaceState();
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NS_DECL_ISUPPORTS
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NS_IMETHOD Init(nsIHTMLEditor* aEditor, nsIDOMXULDocument *aChromeDoc);
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// force an update of the UI. At some point, we could pass flags
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// here to target certain things for updating.
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NS_IMETHOD ForceUpdate(const PRUnichar *tagToUpdate);
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// nsIDOMSelectionListener interface
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NS_IMETHOD NotifySelectionChanged(nsIDOMDocument *aDoc, nsIDOMSelection *aSel, short aReason);
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NS_DECL_NSIDOCUMENTSTATELISTENER
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// nsITimerCallback interfaces
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NS_IMETHOD_(void) Notify(nsITimer *timer);
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/** nsITransactionListener interfaces
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*/
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NS_IMETHOD WillDo(nsITransactionManager *aManager, nsITransaction *aTransaction, PRBool *aInterrupt);
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NS_IMETHOD DidDo(nsITransactionManager *aManager, nsITransaction *aTransaction, nsresult aDoResult);
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NS_IMETHOD WillUndo(nsITransactionManager *aManager, nsITransaction *aTransaction, PRBool *aInterrupt);
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NS_IMETHOD DidUndo(nsITransactionManager *aManager, nsITransaction *aTransaction, nsresult aUndoResult);
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NS_IMETHOD WillRedo(nsITransactionManager *aManager, nsITransaction *aTransaction, PRBool *aInterrupt);
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NS_IMETHOD DidRedo(nsITransactionManager *aManager, nsITransaction *aTransaction, nsresult aRedoResult);
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NS_IMETHOD WillBeginBatch(nsITransactionManager *aManager, PRBool *aInterrupt);
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NS_IMETHOD DidBeginBatch(nsITransactionManager *aManager, nsresult aResult);
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NS_IMETHOD WillEndBatch(nsITransactionManager *aManager, PRBool *aInterrupt);
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NS_IMETHOD DidEndBatch(nsITransactionManager *aManager, nsresult aResult);
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NS_IMETHOD WillMerge(nsITransactionManager *aManager, nsITransaction *aTopTransaction,
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nsITransaction *aTransactionToMerge, PRBool *aInterrupt);
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NS_IMETHOD DidMerge(nsITransactionManager *aManager, nsITransaction *aTopTransaction,
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nsITransaction *aTransactionToMerge,
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PRBool aDidMerge, nsresult aMergeResult);
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protected:
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enum {
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eStateUninitialized = -1,
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eStateOff = PR_FALSE,
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eStateOn = PR_TRUE
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};
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PRBool SelectionIsCollapsed();
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PRBool XULNodeExists(const char* nodeID);
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nsresult SetNodeAttribute(const char* nodeID, const char* attributeName, const nsString& newValue);
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nsresult UnsetNodeAttribute(const char* nodeID, const char* attributeName);
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nsresult UpdateParagraphState(const char* observerName, const char* attributeName);
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nsresult UpdateListState(const char* observerName);
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nsresult UpdateTextState(const char* tagName, const char* observerName, const char* attributeName, PRInt8& ioState);
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nsresult UpdateFontFace(const char* observerName, const char* attributeName);
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nsresult UpdateDirtyState(PRBool aNowDirty);
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nsresult CallUpdateCommands(const nsString& aCommand);
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nsresult PrimeUpdateTimer();
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void TimerCallback();
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// this class should not hold references to the editor or editorShell. Doing
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// so would result in cirular reference chains.
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nsIHTMLEditor* mEditor; // the HTML editor
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nsIDOMXULDocument* mChromeDoc; // XUL document for the chrome area
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nsIDOMWindow* mDOMWindow; // nsIDOMWindow used for calling UpdateCommands
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nsCOMPtr<nsITimer> mUpdateTimer;
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// what we need to update
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PRPackedBool mUpdateParagraph;
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PRPackedBool mUpdateFont;
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PRPackedBool mUpdateList;
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PRPackedBool mUpdateBold;
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PRPackedBool mUpdateItalics;
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PRPackedBool mUpdateUnderline;
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// current state
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PRInt8 mBoldState;
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PRInt8 mItalicState;
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PRInt8 mUnderlineState;
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PRInt8 mDirtyState;
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PRInt8 mSelectionCollapsed;
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PRPackedBool mFirstDoOfFirstUndo;
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nsString mParagraphFormat;
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nsString mFontString;
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nsString mListTag; // contains "" for none, "ol" or "ul"
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};
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extern "C" nsresult NS_NewInterfaceState(nsIHTMLEditor* aEditor, nsIDOMXULDocument* aChromeDoc, nsIDOMSelectionListener** aInstancePtrResult);
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#endif // nsInterfaceState_h__
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