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52bb18a74f
anywhere any more. * Cleaned up split and join undo/redo. * Added TypeInState, a data struct that remembers things about text properties for collapsed selections, so you can type * Ctrl-B with an insertion point and the next character will be bold. * Added all the logic to handle inline vs. block elements when setting text properties. * Added some support for italic and underline as well. Adding these things is pretty easy now. Ctrl-B, Ctrl-I, Ctrl-U for testing bold, italic, underline. * Added all the logic to make sure we only add style tags where they're needed, so you should never get the same style tag nested within itself, except as needed for block elements. * Added methods for testing a node to see if a particular style is set. This isn't 100% done yet, but with very little work we could have toolbar buttons that respond to selection changed notification that show the state of bold, italic, underline, etc. in real time. Supports tri-state: whole selection is bold, some of selection is bold, none of selection is bold, ... * Fully undoable and redoable. * Added some debug printfs to transactions and editors. all controlled by a gNoisy static in each module. helps me track down undo/redo problems. if the output bugs people enough, I'll shut it off and re-enable it in my local tree. Noticably missing: make un-bold, make un-italic, etc. This is coming soon.
157 lines
5.8 KiB
C++
157 lines
5.8 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 License
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* Version 1.0 (the "NPL"); you may not use this file except in
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* compliance with the NPL. You may obtain a copy of the NPL at
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* http://www.mozilla.org/NPL/
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*
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* Software distributed under the NPL is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
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* for the specific language governing rights and limitations under the
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* NPL.
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*
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* The Initial Developer of this code under the NPL is Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All Rights
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* Reserved.
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*/
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#ifndef nsTextEditor_h__
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#define nsTextEditor_h__
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#include "nsITextEditor.h"
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#include "nsCOMPtr.h"
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#include "nsIDOMEventListener.h"
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#include "nsEditor.h"
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#include "nsTextEditRules.h"
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#include "TypeInState.h"
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class nsIStyleContext;
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class nsIDOMRange;
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/**
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* The text editor implementation.<br>
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* Use to edit text represented as a DOM tree.
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* This class is used for editing both plain text and rich text (attributed text).
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*/
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class nsTextEditor : public nsEditor, public nsITextEditor
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{
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public:
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// see nsITextEditor for documentation
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//Interfaces for addref and release and queryinterface
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//NOTE macro used is for classes that inherit from
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// another class. Only the base class should use NS_DECL_ISUPPORTS
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NS_DECL_ISUPPORTS_INHERITED
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nsTextEditor();
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virtual ~nsTextEditor();
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//Initialization
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NS_IMETHOD Init(nsIDOMDocument *aDoc, nsIPresShell *aPresShell);
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// Editing Operations
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NS_IMETHOD SetTextProperty(nsIAtom *aProperty);
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NS_IMETHOD GetTextProperty(nsIAtom *aProperty, PRBool &aAny, PRBool &aAll);
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NS_IMETHOD RemoveTextProperty(nsIAtom *aProperty);
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NS_IMETHOD DeleteSelection(nsIEditor::Direction aDir);
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NS_IMETHOD InsertText(const nsString& aStringToInsert);
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NS_IMETHOD InsertBreak();
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// Transaction control
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NS_IMETHOD EnableUndo(PRBool aEnable);
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NS_IMETHOD Undo(PRUint32 aCount);
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NS_IMETHOD CanUndo(PRBool &aIsEnabled, PRBool &aCanUndo);
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NS_IMETHOD Redo(PRUint32 aCount);
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NS_IMETHOD CanRedo(PRBool &aIsEnabled, PRBool &aCanRedo);
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NS_IMETHOD BeginTransaction();
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NS_IMETHOD EndTransaction();
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// Selection and navigation -- exposed here for convenience
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NS_IMETHOD MoveSelectionUp(nsIAtom *aIncrement, PRBool aExtendSelection);
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NS_IMETHOD MoveSelectionDown(nsIAtom *aIncrement, PRBool aExtendSelection);
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NS_IMETHOD MoveSelectionNext(nsIAtom *aIncrement, PRBool aExtendSelection);
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NS_IMETHOD MoveSelectionPrevious(nsIAtom *aIncrement, PRBool aExtendSelection);
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NS_IMETHOD SelectNext(nsIAtom *aIncrement, PRBool aExtendSelection);
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NS_IMETHOD SelectPrevious(nsIAtom *aIncrement, PRBool aExtendSelection);
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NS_IMETHOD SelectAll();
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NS_IMETHOD ScrollUp(nsIAtom *aIncrement);
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NS_IMETHOD ScrollDown(nsIAtom *aIncrement);
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NS_IMETHOD ScrollIntoView(PRBool aScrollToBegin);
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// cut, copy & paste
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NS_IMETHOD Cut();
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NS_IMETHOD Copy();
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NS_IMETHOD Paste();
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// Input/Output
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NS_IMETHOD Insert(nsString& aInputString);
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NS_IMETHOD OutputText(nsString& aOutputString);
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NS_IMETHOD OutputHTML(nsString& aOutputString);
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protected:
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// rules initialization
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virtual void InitRules();
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// Utility Methods
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virtual void IsTextPropertySetByContent(nsIDOMNode *aNode,
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nsIAtom *aProperty,
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PRBool &aIsSet) const;
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virtual void IsTextStyleSet(nsIStyleContext *aSC,
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nsIAtom *aProperty,
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PRBool &aIsSet) const;
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NS_IMETHOD IsNodeInline(nsIDOMNode *aNode, PRBool &aIsInline) const;
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NS_IMETHOD IntermediateNodesAreInline(nsIDOMRange *aRange,
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nsIDOMNode *aStartNode,
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PRInt32 aStartOffset,
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nsIDOMNode *aEndNode,
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PRInt32 aEndOffset,
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nsIDOMNode *aParent,
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PRBool &aResult) const;
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NS_IMETHOD SetTextPropertiesForNode(nsIDOMNode *aNode,
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nsIDOMNode *aParent,
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PRInt32 aStartOffset,
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PRInt32 aEndOffset,
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nsIAtom *aPropName);
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NS_IMETHOD SetTextPropertiesForNodesWithSameParent(nsIDOMNode *aStartNode,
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PRInt32 aStartOffset,
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nsIDOMNode *aEndNode,
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PRInt32 aEndOffset,
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nsIDOMNode *aParent,
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nsIAtom *aPropName);
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NS_IMETHOD SetTextPropertiesForNodeWithDifferentParents(nsIDOMRange *aRange,
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nsIDOMNode *aStartNode,
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PRInt32 aStartOffset,
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nsIDOMNode *aEndNode,
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PRInt32 aEndOffset,
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nsIDOMNode *aParent,
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nsIAtom *aPropName);
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NS_IMETHOD SetTypeInStateForProperty(TypeInState &aTypeInState, nsIAtom *aPropName);
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// Data members
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protected:
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TypeInState mTypeInState;
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nsTextEditRules* mRules;
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nsCOMPtr<nsIDOMEventListener> mKeyListenerP;
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nsCOMPtr<nsIDOMEventListener> mMouseListenerP;
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nsCOMPtr<nsIDOMEventListener> mTextListenerP;
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nsCOMPtr<nsIDOMEventListener> mDragListenerP;
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};
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#endif //nsTextEditor_h__
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