1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/os/textandloc/textrendering/textformatting/inc/EditorPlainTextUndo.h	Fri Jun 15 03:10:57 2012 +0200
     1.3 @@ -0,0 +1,95 @@
     1.4 +/*
     1.5 +* Copyright (c) 2000-2009 Nokia Corporation and/or its subsidiary(-ies).
     1.6 +* All rights reserved.
     1.7 +* This component and the accompanying materials are made available
     1.8 +* under the terms of "Eclipse Public License v1.0"
     1.9 +* which accompanies this distribution, and is available
    1.10 +* at the URL "http://www.eclipse.org/legal/epl-v10.html".
    1.11 +*
    1.12 +* Initial Contributors:
    1.13 +* Nokia Corporation - initial contribution.
    1.14 +*
    1.15 +* Contributors:
    1.16 +*
    1.17 +* Description: 
    1.18 +*
    1.19 +*/
    1.20 +
    1.21 +
    1.22 +#ifndef EDITORPLAINTEXTUNDO_H_
    1.23 +#define EDITORPLAINTEXTUNDO_H_
    1.24 +
    1.25 +#include "unified_editor.h"
    1.26 +
    1.27 +namespace UndoSystem
    1.28 +{
    1.29 +class CCommandManager;
    1.30 +class MNotUndoableGatekeeper;
    1.31 +}
    1.32 +
    1.33 +class CEditorPlainTextCommandFactory;
    1.34 +
    1.35 +/**
    1.36 +MUnifiedEditor decorator that adds undo functionality to plain text editors.
    1.37 +It passes commands transparently to the editor it is constructed upon, while
    1.38 +storing the operations so that they can be undone and redone. Calling a
    1.39 +non-const method of MUnifiedEditor wipes all 'Redo' operations.
    1.40 +The undo and redo operations are only guaranteed to be accurate if the
    1.41 +underlying editor satisfies certain conditions.
    1.42 +
    1.43 +@since App-frameworks6.1
    1.44 +@internalComponent
    1.45 +*/
    1.46 +class CEditorPlainTextWithUndo : public CBase, public MUnifiedEditor,
    1.47 +	private MUnifiedEditor::MClipboardSupport
    1.48 +	{
    1.49 +public:
    1.50 +	~CEditorPlainTextWithUndo();
    1.51 +
    1.52 +	/**
    1.53 +	 * Creates a CEditorPlainTextWithUndo, using the aSharedUndoSystem.
    1.54 +	 * This allows many objects to stay in synchronization when each is
    1.55 +	 * accessed seperately.
    1.56 +	 * The aEditor is not owned.
    1.57 +	 * Undo functionality is accessed only via the aSharedUndoSystem
    1.58 +	 * object.
    1.59 +	 */
    1.60 +	IMPORT_C static CEditorPlainTextWithUndo* NewL(MUnifiedEditor& aEditor,
    1.61 +		UndoSystem::CCommandManager* aSharedUndoSystem);
    1.62 +
    1.63 +	// From MUnifiedEditor
    1.64 +	void InsertTextL(TInt aPos, const TDesC& aText, const TDesC* aStyle,
    1.65 +		const TTmCharFormatLayer*, const RTmParFormatLayer*);
    1.66 +	void DeleteTextL(TInt aPos,TInt aLength);
    1.67 +	MTmOptionalInterface* Interface(TUint aId);
    1.68 +
    1.69 +	// The following methods are forwarded to the base editor
    1.70 +	TInt DocumentLength() const;
    1.71 +	void GetText(TInt aPos, TPtrC& aText) const;
    1.72 +	void GetBaseFormatL(TTmCharFormat&, RTmParFormat&) const;
    1.73 +	void GetCharFormat(TInt aPos, TFormatLevel aLevel,
    1.74 +		TTmCharFormatLayer& aFormat,TInt& aRunLength) const;
    1.75 +	void GetParFormatL(TInt aPos, TFormatLevel aLevel,
    1.76 +		RTmParFormatLayer& aFormat, TInt& aRunLength) const;
    1.77 +	void SetBaseFormatL(const TTmCharFormat&, const RTmParFormat&);
    1.78 +	void SetCharFormatL(TInt aPos, TInt aLength, const TTmCharFormatLayer&);
    1.79 +	void SetParFormatL(TInt aPos, TInt aLength, const RTmParFormatLayer&);
    1.80 +	void DeleteCharFormatL(TInt aPos, TInt aLength);
    1.81 +	void DeleteParFormatL(TInt aPos, TInt aLength);
    1.82 +
    1.83 +private:
    1.84 +	CEditorPlainTextWithUndo();
    1.85 +	void ConstructL(MUnifiedEditor& aEditorBasedOn,
    1.86 +		UndoSystem::CCommandManager& aSharedUndoSystem);
    1.87 +
    1.88 +	// from MUnifiedEditor::MClipboardSupport
    1.89 +	void CopyToStoreL(CStreamStore&, CStreamDictionary&, TInt, TInt) const;
    1.90 +	void PasteFromStoreL(const CStreamStore&, const CStreamDictionary&, TInt);
    1.91 +
    1.92 +	CEditorPlainTextCommandFactory*	iFactory;
    1.93 +	MUnifiedEditor*						iBaseEditor;
    1.94 +	UndoSystem::CCommandManager*	iCommandManager;
    1.95 +	};
    1.96 +
    1.97 +#endif	// EDITORPLAINTEXTUNDO_H_
    1.98 +