root/Source/core/html/ime/InputMethodContext.h

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INCLUDED FROM


/*
 * Copyright (C) 2013 Google Inc. All rights reserved.
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 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
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 *
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 * notice, this list of conditions and the following disclaimer.
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 * in the documentation and/or other materials provided with the
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 * this software without specific prior written permission.
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 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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#ifndef InputMethodContext_h
#define InputMethodContext_h

#include "bindings/v8/ScriptWrappable.h"
#include "core/editing/CompositionUnderline.h"
#include "core/events/EventTarget.h"
#include "core/html/HTMLElement.h"
#include "wtf/PassOwnPtr.h"
#include "wtf/RefPtr.h"
#include "wtf/text/AtomicString.h"
#include "wtf/text/WTFString.h"

namespace WebCore {

class ExecutionContext;
class InputMethodController;
class Node;

class InputMethodContext FINAL : public ScriptWrappable, public EventTargetWithInlineData {
public:
    static PassOwnPtr<InputMethodContext> create(HTMLElement*);
    virtual ~InputMethodContext();

    void ref() { m_element->ref(); }
    void deref() { m_element->deref(); }

    String locale() const;
    HTMLElement* target() const;
    unsigned compositionStartOffset();
    unsigned compositionEndOffset();
    void confirmComposition();

    String compositionText() const;
    int selectionStart() const;
    int selectionEnd() const;
    const Vector<unsigned>& segments();

    virtual const AtomicString& interfaceName() const OVERRIDE;
    virtual ExecutionContext* executionContext() const OVERRIDE;

    DEFINE_ATTRIBUTE_EVENT_LISTENER(candidatewindowshow);
    DEFINE_ATTRIBUTE_EVENT_LISTENER(candidatewindowupdate);
    DEFINE_ATTRIBUTE_EVENT_LISTENER(candidatewindowhide);

    void dispatchCandidateWindowShowEvent();
    void dispatchCandidateWindowUpdateEvent();
    void dispatchCandidateWindowHideEvent();

private:
    InputMethodContext(HTMLElement*);
    bool hasFocus() const;
    CompositionUnderline selectedSegment() const;
    InputMethodController& inputMethodController() const;

    virtual void refEventTarget() OVERRIDE { ref(); }
    virtual void derefEventTarget() OVERRIDE { deref(); }

    HTMLElement* m_element;
    Vector<unsigned> m_segments;
};

} // namespace WebCore

#endif // InputMethodContext_h

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