sky/engine/core/editing/TypingCommand.h

/*
 * Copyright (C) 2005, 2006, 2007, 2008 Apple Inc. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
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 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
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#ifndef SKY_ENGINE_CORE_EDITING_TYPINGCOMMAND_H_
#define SKY_ENGINE_CORE_EDITING_TYPINGCOMMAND_H_

#include "sky/engine/core/editing/TextInsertionBaseCommand.h"

namespace blink {

class TypingCommand final : public TextInsertionBaseCommand {
public:
    enum ETypingCommand {
        DeleteSelection,
        DeleteKey,
        ForwardDeleteKey,
        InsertText,
        InsertLineBreak,
        InsertParagraphSeparator,
        InsertParagraphSeparatorInQuotedContent
    };

    enum TextCompositionType {
        TextCompositionNone,
        TextCompositionUpdate,
        TextCompositionConfirm
    };

    enum Option {
        SelectInsertedText = 1 << 0,
        RetainAutocorrectionIndicator = 1 << 1,
        PreventSpellChecking = 1 << 2,
        SmartDelete = 1 << 3,
    };
    typedef unsigned Options;

    static void deleteSelection(Document&, Options = 0);
    static void deleteKeyPressed(Document&, Options = 0, TextGranularity = CharacterGranularity);
    static void forwardDeleteKeyPressed(Document&, Options = 0, TextGranularity = CharacterGranularity);
    static void insertText(Document&, const String&, Options, TextCompositionType = TextCompositionNone);
    static void insertText(Document&, const String&, const VisibleSelection&, Options, TextCompositionType = TextCompositionNone);
    static void insertLineBreak(Document&, Options);
    static void insertParagraphSeparator(Document&, Options);
    static void insertParagraphSeparatorInQuotedContent(Document&);
    static void closeTyping(LocalFrame*);

    void insertText(const String &text, bool selectInsertedText);
    void insertTextRunWithoutNewlines(const String &text, bool selectInsertedText);
    void insertLineBreak();
    void insertParagraphSeparatorInQuotedContent();
    void insertParagraphSeparator();
    void deleteKeyPressed(TextGranularity);
    void forwardDeleteKeyPressed(TextGranularity);
    void deleteSelection(bool smartDelete);
    void setCompositionType(TextCompositionType type) { m_compositionType = type; }

private:
    static PassRefPtr<TypingCommand> create(Document& document, ETypingCommand command, const String& text = "", Options options = 0, TextGranularity granularity = CharacterGranularity)
    {
        return adoptRef(new TypingCommand(document, command, text, options, granularity, TextCompositionNone));
    }

    static PassRefPtr<TypingCommand> create(Document& document, ETypingCommand command, const String& text, Options options, TextCompositionType compositionType)
    {
        return adoptRef(new TypingCommand(document, command, text, options, CharacterGranularity, compositionType));
    }

    TypingCommand(Document&, ETypingCommand, const String& text, Options, TextGranularity, TextCompositionType);

    void setSmartDelete(bool smartDelete) { m_smartDelete = smartDelete; }
    bool isOpenForMoreTyping() const { return m_openForMoreTyping; }
    void closeTyping() { m_openForMoreTyping = false; }

    static PassRefPtr<TypingCommand> lastTypingCommandIfStillOpenForTyping(LocalFrame*);

    virtual void doApply() override;
    virtual EditAction editingAction() const override;
    virtual bool isTypingCommand() const override;
    virtual bool preservesTypingStyle() const override { return m_preservesTypingStyle; }
    virtual void setShouldRetainAutocorrectionIndicator(bool retain) override { m_shouldRetainAutocorrectionIndicator = retain; }
    virtual bool shouldStopCaretBlinking() const override { return true; }
    void setShouldPreventSpellChecking(bool prevent) { m_shouldPreventSpellChecking = prevent; }

    static void updateSelectionIfDifferentFromCurrentSelection(TypingCommand*, LocalFrame*);

    void updatePreservesTypingStyle(ETypingCommand);
    void markMisspellingsAfterTyping(ETypingCommand);
    void typingAddedToOpenCommand(ETypingCommand);
    bool makeEditableRootEmpty();

    void updateCommandTypeOfOpenCommand(ETypingCommand typingCommand) { m_commandType = typingCommand; }
    ETypingCommand commandTypeOfOpenCommand() const { return m_commandType; }

    ETypingCommand m_commandType;
    String m_textToInsert;
    bool m_openForMoreTyping;
    bool m_selectInsertedText;
    bool m_smartDelete;
    TextGranularity m_granularity;
    TextCompositionType m_compositionType;
    bool m_preservesTypingStyle;

    // Undoing a series of backward deletes will restore a selection around all of the
    // characters that were deleted, but only if the typing command being undone
    // was opened with a backward delete.
    bool m_openedByBackwardDelete;

    bool m_shouldRetainAutocorrectionIndicator;
    bool m_shouldPreventSpellChecking;
};

} // namespace blink

#endif  // SKY_ENGINE_CORE_EDITING_TYPINGCOMMAND_H_