sky/engine/core/html/ime/InputMethodContext.h

/*
 * Copyright (C) 2013 Google Inc. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 *
 *     * Redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above
 * copyright notice, this list of conditions and the following disclaimer
 * in the documentation and/or other materials provided with the
 * distribution.
 *     * Neither the name of Google Inc. nor the names of its
 * contributors may be used to endorse or promote products derived from
 * this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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#ifndef SKY_ENGINE_CORE_HTML_IME_INPUTMETHODCONTEXT_H_
#define SKY_ENGINE_CORE_HTML_IME_INPUTMETHODCONTEXT_H_

#include "sky/engine/core/editing/CompositionUnderline.h"
#include "sky/engine/core/events/EventTarget.h"
#include "sky/engine/core/html/HTMLElement.h"
#include "sky/engine/wtf/PassOwnPtr.h"
#include "sky/engine/wtf/RefPtr.h"
#include "sky/engine/wtf/text/AtomicString.h"
#include "sky/engine/wtf/text/WTFString.h"

namespace blink {

class ExecutionContext;
class InputMethodController;
class Node;

class InputMethodContext final : public EventTargetWithInlineData {
    DEFINE_WRAPPERTYPEINFO();
public:
    static PassOwnPtr<InputMethodContext> create(HTMLElement*);
    virtual ~InputMethodContext();

#if !ENABLE(OILPAN)
    void ref() { m_element->ref(); }
    void deref() { m_element->deref(); }
#endif

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

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

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

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

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

#if !ENABLE(OILPAN)
    virtual void refEventTarget() override { ref(); }
    virtual void derefEventTarget() override { deref(); }
#endif

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

} // namespace blink

#endif  // SKY_ENGINE_CORE_HTML_IME_INPUTMETHODCONTEXT_H_