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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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#include "EditorPlainTextCommands.h"
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#include "AssertFileAndLine.h"
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#include <txtetext.h>
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#include <txtclipboard.h>
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#ifdef SYMBIAN_ENABLE_SPLIT_HEADERS
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#include "txtfmlyr_internal.h"
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#endif
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using namespace UndoSystem;
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/////////////////////////
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// //
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// Internal Commands //
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// //
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/////////////////////////
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TUid CEditorCommand::FamilyUid() const { return TUid::Uid(KUndoDllUid); }
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CEditorCommandInsertTextAndFormat*
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CEditorCommand::CastToCEditorCommandInsertTextAndFormat() { return 0; }
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CEditorCommandDeleteText*
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CEditorCommand::CastToCEditorCommandDeleteText() { return 0; }
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CEditorCommandInsertPlainText*
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CEditorCommand::CastToCEditorCommandInsertPlainText() { return 0; }
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CEditorCommandDeletePlainText*
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CEditorCommand::CastToCEditorCommandDeletePlainText() { return 0; }
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CEditorCommandDeleteCharFormat*
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CEditorCommand::CastToCEditorCommandDeleteCharFormat() { return 0; }
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CEditorCommandDeleteParFormat*
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CEditorCommand::CastToCEditorCommandDeleteParFormat() { return 0; }
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/////////////////////////////////
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// //
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// Command coalesce function //
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// //
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/////////////////////////////////
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CCommand* UndoSystem::CoalesceL(CCommand* aLeft, CCommand* aRight)
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{
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if (!aRight)
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return aLeft;
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if (!aLeft)
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return aRight;
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CleanupStack::PushL(aRight);
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CBatchCommand* batch = aLeft->Batch();
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if (batch)
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{
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batch->PrepareToPushL(aRight);
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batch->Push(aRight);
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CleanupStack::Pop(aRight);
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return batch;
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}
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ASSERT(aLeft->Single());
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batch = CBatchCommand::NewL();
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CleanupStack::PushL(batch);
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batch->PrepareToPushL(aLeft);
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batch->Push(aLeft);
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batch->PrepareToPushL(aRight);
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batch->Push(aRight);
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CleanupStack::Pop(batch);
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CleanupStack::Pop(aRight);
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return batch;
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}
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/**
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* Command for deleting plain text.
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*
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* @internalComponent
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* @since App-frameworks6.1
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*/
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NONSHARABLE_CLASS(CEditorCommandDeletePlainText) : public CEditorCommand
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{
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TEditorDeletePlainTextImpl iImpl;
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CEditorCommandDeletePlainText*
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CastToCEditorCommandDeletePlainText() { return this; }
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CEditorCommandDeletePlainText(MUnifiedEditor& aTarget,
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TInt aPos, TInt aLength)
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: iImpl(aTarget, aPos, aLength) {}
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public:
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static CEditorCommandDeletePlainText* NewL(TInt aPos,
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TInt aLength, MUnifiedEditor& aTarget)
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{
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return new(ELeave) CEditorCommandDeletePlainText(aTarget, aPos, aLength);
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}
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CCommand* CreateInverseL() const;
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TInt ExecuteL() const
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{
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return iImpl.ExecuteL();
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}
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// This command can be coalesced with others of the same type
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TBool CanAdd(TInt aPos, TInt aLength, MUnifiedEditor& aTarget) const
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{
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return iImpl.CanAdd(aPos, aLength, aTarget);
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}
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void Add(TInt aLength)
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{
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iImpl.Add(aLength);
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}
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};
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/**
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* Command for inserting text in a specified style and format.
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*
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* @internalComponent
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* @since App-frameworks6.1
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*/
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NONSHARABLE_CLASS(CEditorCommandInsertPlainText) : public CEditorCommand
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{
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TEditorInsertPlainTextImpl iImpl;
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CEditorCommandInsertPlainText*
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CastToCEditorCommandInsertPlainText() { return this; }
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CEditorCommandInsertPlainText(MUnifiedEditor& aTarget, TInt aPos, const TDesC& aText)
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: iImpl(aTarget, aPos, aText) {}
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public:
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static CEditorCommandInsertPlainText* NewL(TInt aPos, const TDesC& aText,
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MUnifiedEditor& aTarget)
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{
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return new(ELeave) CEditorCommandInsertPlainText(aTarget, aPos, aText);
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}
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/**
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* Gets the length specified, but this might entail the use of more than
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* one CCommand object.
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*/
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static CCommand* NewBatchL(TInt aPos, TInt aLength, MUnifiedEditor& aTarget);
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CCommand* CreateInverseL() const;
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TInt ExecuteL() const
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{
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return iImpl.ExecuteL();
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}
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TBool CanAdd(TInt aPos, const TDesC& aText, MUnifiedEditor& aTarget) const
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{
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return iImpl.CanAdd(aPos, aText, aTarget);
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}
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void Add(TInt aPos, const TDesC& aText)
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{
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iImpl.Add(aPos, aText);
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}
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};
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CCommand* CEditorCommandInsertPlainText::NewBatchL(TInt aPos,
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TInt aLength, MUnifiedEditor& aTarget)
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{
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CCommand* command = 0;
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TInt end = aPos + aLength;
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while (aLength)
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{
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TPtrC textSegment;
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aTarget.GetText(end - aLength, textSegment);
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TInt segLength = textSegment.Length();
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if (aLength < segLength)
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segLength = aLength;
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if (KMaxCharsInSingleCommand < segLength)
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segLength = KMaxCharsInSingleCommand;
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CleanupStack::PushL(command);
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// coverity[double_free]
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command = CoalesceL(command, CEditorCommandInsertPlainText::NewL(aPos,
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textSegment.Left(segLength), aTarget));
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CleanupStack::Pop();
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aLength -= segLength;
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}
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return command;
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}
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CCommand* CEditorCommandInsertPlainText::CreateInverseL() const
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{
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return CEditorCommandDeletePlainText::NewL(iImpl.Pos(), iImpl.Text().Length(),
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iImpl.Target());
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}
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CCommand* CEditorCommandDeletePlainText::CreateInverseL() const
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{
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return CEditorCommandInsertPlainText::NewBatchL(iImpl.Pos(), iImpl.Length(),
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iImpl.Target());
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}
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//////////////////////////////////////////
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// //
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// CEditorCommandInsertPlainTextProto //
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// //
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//////////////////////////////////////////
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void CEditorCommandInsertPlainTextProto::Set(TInt aPos, const TDesC& aText)
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{
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iPos = aPos;
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iText = &aText;
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}
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UndoSystem::CCommand* CEditorCommandInsertPlainTextProto::CreateInverseL() const
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{
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return CEditorCommandDeletePlainText::NewL(iPos, iText->Length(), iTarget);
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}
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TInt CEditorCommandInsertPlainTextProto::ExecuteL() const
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{
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iTarget.InsertTextL(iPos, *iText);
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return KErrNone;
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}
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TBool CEditorCommandInsertPlainTextProto::PrepareToAddInverseToLastL(
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CSingleCommand& aLastCommand) const
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{
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if (aLastCommand.FamilyUid() != TUid::Uid(KUndoDllUid))
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return EFalse;
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CEditorCommandDeletePlainText* last =
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static_cast<CEditorCommand&>(aLastCommand).CastToCEditorCommandDeletePlainText();
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if (!last)
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return EFalse;
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return last->CanAdd(iPos, iText->Length(), iTarget);
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}
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void CEditorCommandInsertPlainTextProto::AddInverseToLast(CSingleCommand& aLastCommand) const
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{
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ASSERT(aLastCommand.FamilyUid() == TUid::Uid(KUndoDllUid));
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CEditorCommandDeletePlainText* last =
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static_cast<CEditorCommand&>(aLastCommand).CastToCEditorCommandDeletePlainText();
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ASSERT(last);
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last->Add(iText->Length());
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}
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//////////////////////////////////////////
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// //
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// CEditorCommandDeletePlainTextProto //
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// //
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//////////////////////////////////////////
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void CEditorCommandDeletePlainTextProto::Set(TInt aPos, TInt aLength)
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{
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iPos = aPos;
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iLength = aLength;
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}
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CCommand* CEditorCommandDeletePlainTextProto::CreateInverseL() const
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{
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return CEditorCommandInsertPlainText::NewBatchL(iPos, iLength, iTarget);
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}
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TInt CEditorCommandDeletePlainTextProto::ExecuteL() const
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{
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iTarget.DeleteTextL(iPos, iLength);
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return KErrNone;
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}
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TBool CEditorCommandDeletePlainTextProto::PrepareToAddInverseToLastL(
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CSingleCommand& aLastCommand) const
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{
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if (iDeletedText.MaxLength() < iLength)
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return EFalse;
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if (aLastCommand.FamilyUid() != TUid::Uid(KUndoDllUid))
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return EFalse;
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CEditorCommandInsertPlainText* last =
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static_cast<CEditorCommand&>(aLastCommand).CastToCEditorCommandInsertPlainText();
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if (!last)
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return EFalse;
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TBool result = EFalse;
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TPtrC textSegment;
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iTarget.GetText(iPos, textSegment);
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if (iLength <= textSegment.Length())
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{
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result = last->CanAdd(iPos, textSegment.Left(iLength), iTarget);
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if (result)
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iDeletedText = textSegment.Left(iLength);
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}
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return result;
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}
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void CEditorCommandDeletePlainTextProto::AddInverseToLast(CSingleCommand& aLastCommand) const
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{
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ASSERT(aLastCommand.FamilyUid() == TUid::Uid(KUndoDllUid));
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CEditorCommandInsertPlainText* last =
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static_cast<CEditorCommand&>(aLastCommand).CastToCEditorCommandInsertPlainText();
|
|
sl@0
|
302 |
ASSERT(last);
|
|
sl@0
|
303 |
last->Add(iPos, iDeletedText);
|
|
sl@0
|
304 |
}
|
|
sl@0
|
305 |
|
|
sl@0
|
306 |
//////////////////////////////////
|
|
sl@0
|
307 |
// //
|
|
sl@0
|
308 |
// TEditorInsertPlainTextImpl //
|
|
sl@0
|
309 |
// //
|
|
sl@0
|
310 |
//////////////////////////////////
|
|
sl@0
|
311 |
|
|
sl@0
|
312 |
TInt TEditorInsertPlainTextImpl::ExecuteL(const TDesC* aStyle,
|
|
sl@0
|
313 |
const TTmCharFormatLayer* aChar,
|
|
sl@0
|
314 |
const RTmParFormatLayer* aPar) const
|
|
sl@0
|
315 |
{
|
|
sl@0
|
316 |
iTarget.InsertTextL(iPos, iText, aStyle, aChar, aPar);
|
|
sl@0
|
317 |
return KErrNone;
|
|
sl@0
|
318 |
}
|
|
sl@0
|
319 |
|
|
sl@0
|
320 |
TInt TEditorInsertPlainTextImpl::ExecuteL() const
|
|
sl@0
|
321 |
{
|
|
sl@0
|
322 |
return ExecuteL(0, 0, 0);
|
|
sl@0
|
323 |
}
|
|
sl@0
|
324 |
|
|
sl@0
|
325 |
TInt TEditorInsertPlainTextImpl::CanAdd(TInt aPos, const TDesC& aText, MUnifiedEditor& aTarget) const
|
|
sl@0
|
326 |
{
|
|
sl@0
|
327 |
if (&aTarget != &iTarget)
|
|
sl@0
|
328 |
return EFalse;
|
|
sl@0
|
329 |
TInt length = aText.Length();
|
|
sl@0
|
330 |
if (KMaxCharsInSingleCommand <= iText.Length() + length)
|
|
sl@0
|
331 |
return EFalse;
|
|
sl@0
|
332 |
return aPos <= iPos && iPos <= aPos + length;
|
|
sl@0
|
333 |
}
|
|
sl@0
|
334 |
|
|
sl@0
|
335 |
void TEditorInsertPlainTextImpl::Add(TInt aPos, const TDesC& aText)
|
|
sl@0
|
336 |
{
|
|
sl@0
|
337 |
TPtrC left = aText.Left(iPos - aPos);
|
|
sl@0
|
338 |
TPtrC right = aText.Mid(iPos - aPos);
|
|
sl@0
|
339 |
iText.Insert(0, left);
|
|
sl@0
|
340 |
iText.Append(right);
|
|
sl@0
|
341 |
iPos = aPos;
|
|
sl@0
|
342 |
}
|
|
sl@0
|
343 |
|
|
sl@0
|
344 |
//////////////////////////////////
|
|
sl@0
|
345 |
// //
|
|
sl@0
|
346 |
// TEditorDeletePlainTextImpl //
|
|
sl@0
|
347 |
// //
|
|
sl@0
|
348 |
//////////////////////////////////
|
|
sl@0
|
349 |
|
|
sl@0
|
350 |
TInt TEditorDeletePlainTextImpl::ExecuteL() const
|
|
sl@0
|
351 |
{
|
|
sl@0
|
352 |
iTarget.DeleteTextL(iPos, iLength);
|
|
sl@0
|
353 |
return KErrNone;
|
|
sl@0
|
354 |
}
|
|
sl@0
|
355 |
|
|
sl@0
|
356 |
TBool TEditorDeletePlainTextImpl::CanAdd(TInt aPos, TInt aLength, MUnifiedEditor& aTarget) const
|
|
sl@0
|
357 |
{
|
|
sl@0
|
358 |
return &aTarget == &iTarget && iPos <= aPos && aPos <= iLength + iPos
|
|
sl@0
|
359 |
&& aLength + iLength <= KMaxCharsInSingleCommand;
|
|
sl@0
|
360 |
}
|
|
sl@0
|
361 |
|
|
sl@0
|
362 |
void TEditorDeletePlainTextImpl::Add(TInt aLength)
|
|
sl@0
|
363 |
{
|
|
sl@0
|
364 |
iLength += aLength;
|
|
sl@0
|
365 |
}
|
|
sl@0
|
366 |
|
|
sl@0
|
367 |
/////////////////////////////
|
|
sl@0
|
368 |
// //
|
|
sl@0
|
369 |
// TEditorPasteProtoImpl //
|
|
sl@0
|
370 |
// //
|
|
sl@0
|
371 |
/////////////////////////////
|
|
sl@0
|
372 |
|
|
sl@0
|
373 |
void TEditorPasteProtoImpl::Set(const CStreamStore& aStore,
|
|
sl@0
|
374 |
const CStreamDictionary& aDict,
|
|
sl@0
|
375 |
TInt aPos)
|
|
sl@0
|
376 |
{
|
|
sl@0
|
377 |
iStore = &aStore;
|
|
sl@0
|
378 |
iStreamDictionary = &aDict;
|
|
sl@0
|
379 |
iPos = aPos;
|
|
sl@0
|
380 |
}
|
|
sl@0
|
381 |
|
|
sl@0
|
382 |
void TEditorPasteProtoImpl::OpenPlainTextStreamLC(RStoreReadStream& aStream) const
|
|
sl@0
|
383 |
{
|
|
sl@0
|
384 |
TStreamId plainTextStream = iStreamDictionary->At(KClipboardUidTypePlainText);
|
|
sl@0
|
385 |
if (plainTextStream == KNullStreamId)
|
|
sl@0
|
386 |
User::Leave(KErrNotSupported); // don't know how to undo this
|
|
sl@0
|
387 |
aStream.OpenLC(*iStore, plainTextStream);
|
|
sl@0
|
388 |
}
|
|
sl@0
|
389 |
|
|
sl@0
|
390 |
TInt TEditorPasteProtoImpl::LengthL() const
|
|
sl@0
|
391 |
{
|
|
sl@0
|
392 |
RStoreReadStream stream;
|
|
sl@0
|
393 |
OpenPlainTextStreamLC(stream);
|
|
sl@0
|
394 |
TInt length = stream.ReadInt32L();
|
|
sl@0
|
395 |
CleanupStack::PopAndDestroy();
|
|
sl@0
|
396 |
return length;
|
|
sl@0
|
397 |
}
|
|
sl@0
|
398 |
|
|
sl@0
|
399 |
TInt TEditorPasteProtoImpl::ExecuteL() const
|
|
sl@0
|
400 |
{
|
|
sl@0
|
401 |
MUnifiedEditor::MClipboardSupport* ci = iTarget.ClipboardSupport();
|
|
sl@0
|
402 |
ASSERT(ci);
|
|
sl@0
|
403 |
ci->PasteFromStoreL(*iStore, *iStreamDictionary, iPos);
|
|
sl@0
|
404 |
return KErrNone;
|
|
sl@0
|
405 |
}
|
|
sl@0
|
406 |
|
|
sl@0
|
407 |
/////////////////////////////////////////
|
|
sl@0
|
408 |
// //
|
|
sl@0
|
409 |
// CEditorCommandPastePlainTextProto //
|
|
sl@0
|
410 |
// //
|
|
sl@0
|
411 |
/////////////////////////////////////////
|
|
sl@0
|
412 |
|
|
sl@0
|
413 |
void CEditorCommandPastePlainTextProto::Set(const CStreamStore& aStore,
|
|
sl@0
|
414 |
const CStreamDictionary& aStreamDictionary,
|
|
sl@0
|
415 |
TInt aPos)
|
|
sl@0
|
416 |
{
|
|
sl@0
|
417 |
iImpl.Set(aStore, aStreamDictionary, aPos);
|
|
sl@0
|
418 |
}
|
|
sl@0
|
419 |
|
|
sl@0
|
420 |
UndoSystem::CCommand* CEditorCommandPastePlainTextProto::CreateInverseL() const
|
|
sl@0
|
421 |
{
|
|
sl@0
|
422 |
return CEditorCommandDeletePlainText::NewL(iImpl.Pos(), iImpl.LengthL(), iImpl.Target());
|
|
sl@0
|
423 |
}
|
|
sl@0
|
424 |
|
|
sl@0
|
425 |
TInt CEditorCommandPastePlainTextProto::ExecuteL() const
|
|
sl@0
|
426 |
{
|
|
sl@0
|
427 |
return iImpl.ExecuteL();
|
|
sl@0
|
428 |
}
|