InsertTextCommand.h   [plain text]


/*
 * Copyright (C) 2005, 2006, 2008 Apple Inc. All rights reserved.
 *
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 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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#pragma once

#include "CompositeEditCommand.h"

namespace WebCore {

class DocumentMarkerController;
class Text;

class TextInsertionMarkerSupplier : public RefCounted<TextInsertionMarkerSupplier> {
public:
    virtual ~TextInsertionMarkerSupplier() = default;
    virtual void addMarkersToTextNode(Text*, unsigned offsetOfInsertion, const String& textInserted) = 0;
protected:
    TextInsertionMarkerSupplier() = default;
};

class InsertTextCommand : public CompositeEditCommand {
public:
    enum RebalanceType {
        RebalanceLeadingAndTrailingWhitespaces,
        RebalanceAllWhitespaces
    };

    static Ref<InsertTextCommand> create(Document& document, const String& text, bool selectInsertedText = false,
        RebalanceType rebalanceType = RebalanceLeadingAndTrailingWhitespaces, EditAction editingAction = EditAction::Insert)
    {
        return adoptRef(*new InsertTextCommand(document, text, selectInsertedText, rebalanceType, editingAction));
    }

    static Ref<InsertTextCommand> createWithMarkerSupplier(Document& document, const String& text, Ref<TextInsertionMarkerSupplier>&& markerSupplier, EditAction editingAction = EditAction::Insert)
    {
        return adoptRef(*new InsertTextCommand(document, text, WTFMove(markerSupplier), editingAction));
    }

protected:
    InsertTextCommand(Document&, const String& text, Ref<TextInsertionMarkerSupplier>&&, EditAction);
    InsertTextCommand(Document&, const String& text, bool selectInsertedText, RebalanceType, EditAction);

private:

    void deleteCharacter();

    void doApply() override;

    bool isInsertTextCommand() const override { return true; }

    Position positionInsideTextNode(const Position&);
    Position insertTab(const Position&);
    
    bool performTrivialReplace(const String&, bool selectInsertedText);
    bool performOverwrite(const String&, bool selectInsertedText);
    void setEndingSelectionWithoutValidation(const Position& startPosition, const Position& endPosition);

    friend class TypingCommand;

    String m_text;
    bool m_selectInsertedText;
    RebalanceType m_rebalanceType;
    RefPtr<TextInsertionMarkerSupplier> m_markerSupplier;
};

} // namespace WebCore