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/*
* Copyright (C) 2010 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:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. 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.
*
* THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
* 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
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef SpellChecker_h
#define SpellChecker_h
#include "Element.h"
#include "PlatformString.h"
#include "Range.h"
#include "TextChecking.h"
#include "Timer.h"
#include <wtf/Deque.h>
#include <wtf/RefCounted.h>
#include <wtf/RefPtr.h>
#include <wtf/Noncopyable.h>
#include <wtf/Vector.h>
namespace WebCore {
class Frame;
class Node;
class TextCheckerClient;
struct TextCheckingResult;
class SpellCheckRequest : public RefCounted<SpellCheckRequest> {
public:
SpellCheckRequest(int sequence, PassRefPtr<Range> checkingRange, PassRefPtr<Range> paragraphRange, const String&, TextCheckingTypeMask);
~SpellCheckRequest();
static PassRefPtr<SpellCheckRequest> create(TextCheckingTypeMask, PassRefPtr<Range> checkingRange, PassRefPtr<Range> paragraphRange);
void setSequence(int sequence) { m_sequence = sequence; }
int sequence() const { return m_sequence; }
PassRefPtr<Range> checkingRange() const { return m_checkingRange; }
PassRefPtr<Range> paragraphRange() const { return m_paragraphRange; }
const String& text() const { return m_text; }
TextCheckingTypeMask mask() const { return m_mask; }
PassRefPtr<Element> rootEditableElement() const { return m_rootEditableElement; }
private:
int m_sequence;
RefPtr<Range> m_checkingRange;
RefPtr<Range> m_paragraphRange;
String m_text;
TextCheckingTypeMask m_mask;
RefPtr<Element> m_rootEditableElement;
};
class SpellChecker {
WTF_MAKE_NONCOPYABLE(SpellChecker);
public:
explicit SpellChecker(Frame*);
~SpellChecker();
bool isAsynchronousEnabled() const;
bool isCheckable(Range*) const;
void requestCheckingFor(PassRefPtr<SpellCheckRequest>);
void didCheck(int sequence, const Vector<TextCheckingResult>&);
int lastRequestSequence() const
{
return m_lastRequestSequence;
}
int lastProcessedSequence() const
{
return m_lastProcessedSequence;
}
private:
typedef Deque<RefPtr<SpellCheckRequest> > RequestQueue;
bool canCheckAsynchronously(Range*) const;
TextCheckerClient* client() const;
void timerFiredToProcessQueuedRequest(Timer<SpellChecker>*);
void invokeRequest(PassRefPtr<SpellCheckRequest>);
void enqueueRequest(PassRefPtr<SpellCheckRequest>);
Frame* m_frame;
int m_lastRequestSequence;
int m_lastProcessedSequence;
Timer<SpellChecker> m_timerToProcessQueuedRequest;
RefPtr<SpellCheckRequest> m_processingRequest;
RequestQueue m_requestQueue;
};
} // namespace WebCore
#endif // SpellChecker_h
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