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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 THIRD_PARTY_BLINK_RENDERER_CORE_EDITING_SPELLCHECK_SPELL_CHECK_REQUESTER_H_
#define THIRD_PARTY_BLINK_RENDERER_CORE_EDITING_SPELLCHECK_SPELL_CHECK_REQUESTER_H_
#include "base/macros.h"
#include "base/memory/scoped_refptr.h"
#include "third_party/blink/renderer/core/dom/element.h"
#include "third_party/blink/renderer/core/dom/range.h"
#include "third_party/blink/renderer/core/editing/forward.h"
#include "third_party/blink/renderer/core/editing/spellcheck/text_checking.h"
#include "third_party/blink/renderer/platform/timer.h"
#include "third_party/blink/renderer/platform/wtf/deque.h"
#include "third_party/blink/renderer/platform/wtf/text/wtf_string.h"
#include "third_party/blink/renderer/platform/wtf/vector.h"
namespace blink {
class LocalFrame;
class SpellCheckRequester;
class WebTextCheckClient;
class CORE_EXPORT SpellCheckRequest
: public GarbageCollectedFinalized<SpellCheckRequest> {
public:
static const int kUnrequestedTextCheckingSequence = -1;
static SpellCheckRequest* Create(const EphemeralRange& checking_range,
int request_number);
~SpellCheckRequest();
void Dispose();
Range* CheckingRange() const { return checking_range_; }
Element* RootEditableElement() const { return root_editable_element_; }
void SetCheckerAndSequence(SpellCheckRequester*, int sequence);
int Sequence() const { return sequence_; }
String GetText() const { return text_; }
bool IsValid() const;
void DidSucceed(const Vector<TextCheckingResult>&);
void DidCancel();
int RequestNumber() const { return request_number_; }
void Trace(blink::Visitor*);
private:
SpellCheckRequest(Range* checking_range, const String&, int request_number);
Member<SpellCheckRequester> requester_;
Member<Range> checking_range_;
Member<Element> root_editable_element_;
int sequence_ = kUnrequestedTextCheckingSequence;
String text_;
int request_number_;
};
class CORE_EXPORT SpellCheckRequester final
: public GarbageCollectedFinalized<SpellCheckRequester> {
public:
static SpellCheckRequester* Create(LocalFrame& frame) {
return new SpellCheckRequester(frame);
}
~SpellCheckRequester();
void Trace(blink::Visitor*);
// Returns true if a request is initiated. Returns false otherwise.
bool RequestCheckingFor(const EphemeralRange&);
bool RequestCheckingFor(const EphemeralRange&, int request_num);
void CancelCheck();
int LastRequestSequence() const { return last_request_sequence_; }
int LastProcessedSequence() const { return last_processed_sequence_; }
// Exposed for leak detector only, see comment for corresponding
// SpellChecker method.
void PrepareForLeakDetection();
private:
friend class SpellCheckRequest;
explicit SpellCheckRequester(LocalFrame&);
WebTextCheckClient* GetTextCheckerClient() const;
void TimerFiredToProcessQueuedRequest(TimerBase*);
void InvokeRequest(SpellCheckRequest*);
void EnqueueRequest(SpellCheckRequest*);
bool EnsureValidRequestQueueFor(int sequence);
void DidCheckSucceed(int sequence, const Vector<TextCheckingResult>&);
void DidCheckCancel(int sequence);
void DidCheck(int sequence);
void ClearProcessingRequest();
Member<LocalFrame> frame_;
LocalFrame& GetFrame() const {
DCHECK(frame_);
return *frame_;
}
int last_request_sequence_;
int last_processed_sequence_;
TimeTicks last_request_time_;
TaskRunnerTimer<SpellCheckRequester> timer_to_process_queued_request_;
Member<SpellCheckRequest> processing_request_;
typedef HeapDeque<Member<SpellCheckRequest>> RequestQueue;
RequestQueue request_queue_;
DISALLOW_COPY_AND_ASSIGN(SpellCheckRequester);
};
} // namespace blink
#endif // THIRD_PARTY_BLINK_RENDERER_CORE_EDITING_SPELLCHECK_SPELL_CHECK_REQUESTER_H_
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