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/*
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* Copyright (c) 2000-2009 Nokia Corporation and/or its subsidiary(-ies).
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* All rights reserved.
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* This component and the accompanying materials are made available
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* under the terms of "Eclipse Public License v1.0"
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* which accompanies this distribution, and is available
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* at the URL "http://www.eclipse.org/legal/epl-v10.html".
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*
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* Initial Contributors:
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* Nokia Corporation - initial contribution.
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*
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* Contributors:
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*
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* Description:
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*
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*/
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#ifndef EDITORPLAINTEXTUNDO_H_
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#define EDITORPLAINTEXTUNDO_H_
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#include "unified_editor.h"
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namespace UndoSystem
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{
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class CCommandManager;
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class MNotUndoableGatekeeper;
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}
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class CEditorPlainTextCommandFactory;
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/**
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MUnifiedEditor decorator that adds undo functionality to plain text editors.
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It passes commands transparently to the editor it is constructed upon, while
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storing the operations so that they can be undone and redone. Calling a
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non-const method of MUnifiedEditor wipes all 'Redo' operations.
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The undo and redo operations are only guaranteed to be accurate if the
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underlying editor satisfies certain conditions.
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@since App-frameworks6.1
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@internalComponent
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*/
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class CEditorPlainTextWithUndo : public CBase, public MUnifiedEditor,
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private MUnifiedEditor::MClipboardSupport
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{
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public:
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~CEditorPlainTextWithUndo();
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/**
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* Creates a CEditorPlainTextWithUndo, using the aSharedUndoSystem.
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* This allows many objects to stay in synchronization when each is
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* accessed seperately.
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* The aEditor is not owned.
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* Undo functionality is accessed only via the aSharedUndoSystem
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* object.
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*/
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IMPORT_C static CEditorPlainTextWithUndo* NewL(MUnifiedEditor& aEditor,
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UndoSystem::CCommandManager* aSharedUndoSystem);
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// From MUnifiedEditor
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void InsertTextL(TInt aPos, const TDesC& aText, const TDesC* aStyle,
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const TTmCharFormatLayer*, const RTmParFormatLayer*);
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void DeleteTextL(TInt aPos,TInt aLength);
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MTmOptionalInterface* Interface(TUint aId);
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// The following methods are forwarded to the base editor
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TInt DocumentLength() const;
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void GetText(TInt aPos, TPtrC& aText) const;
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void GetBaseFormatL(TTmCharFormat&, RTmParFormat&) const;
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void GetCharFormat(TInt aPos, TFormatLevel aLevel,
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TTmCharFormatLayer& aFormat,TInt& aRunLength) const;
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void GetParFormatL(TInt aPos, TFormatLevel aLevel,
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RTmParFormatLayer& aFormat, TInt& aRunLength) const;
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void SetBaseFormatL(const TTmCharFormat&, const RTmParFormat&);
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void SetCharFormatL(TInt aPos, TInt aLength, const TTmCharFormatLayer&);
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void SetParFormatL(TInt aPos, TInt aLength, const RTmParFormatLayer&);
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void DeleteCharFormatL(TInt aPos, TInt aLength);
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void DeleteParFormatL(TInt aPos, TInt aLength);
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private:
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CEditorPlainTextWithUndo();
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void ConstructL(MUnifiedEditor& aEditorBasedOn,
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UndoSystem::CCommandManager& aSharedUndoSystem);
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// from MUnifiedEditor::MClipboardSupport
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void CopyToStoreL(CStreamStore&, CStreamDictionary&, TInt, TInt) const;
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void PasteFromStoreL(const CStreamStore&, const CStreamDictionary&, TInt);
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CEditorPlainTextCommandFactory* iFactory;
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MUnifiedEditor* iBaseEditor;
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UndoSystem::CCommandManager* iCommandManager;
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};
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#endif // EDITORPLAINTEXTUNDO_H_
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