third_party/WebKit/Source/core/editing/spellcheck/SpellCheckRequester.h

   1 /*
   2  * Copyright (C) 2010 Google Inc. All rights reserved.
   3  *
   4  * Redistribution and use in source and binary forms, with or without
   5  * modification, are permitted provided that the following conditions
   6  * are met:
   7  * 1. Redistributions of source code must retain the above copyright
   8  *    notice, this list of conditions and the following disclaimer.
   9  * 2. Redistributions in binary form must reproduce the above copyright
  10  *    notice, this list of conditions and the following disclaimer in the
  11  *    documentation and/or other materials provided with the distribution.
  12  *
  13  * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
  14  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  15  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  16  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
  17  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  18  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  19  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
  20  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
  21  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  22  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  23  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  24  */
  25
  26 #ifndef SpellCheckRequester_h
  27 #define SpellCheckRequester_h
  28
  29 #include "core/dom/Element.h"
  30 #include "core/dom/Range.h"
  31 #include "platform/Timer.h"
  32 #include "platform/text/TextChecking.h"
  33 #include "wtf/Deque.h"
  34 #include "wtf/Noncopyable.h"
  35 #include "wtf/RefPtr.h"
  36 #include "wtf/Vector.h"
  37 #include "wtf/text/WTFString.h"
  38
  39 namespace blink {
  40
  41 class LocalFrame;
  42 class SpellCheckRequester;
  43 class TextCheckerClient;
  44
  45 class SpellCheckRequest final : public TextCheckingRequest {
  46 public:
  47     static PassRefPtrWillBeRawPtr<SpellCheckRequest> create(TextCheckingTypeMask, TextCheckingProcessType, PassRefPtrWillBeRawPtr<Range> checkingRange, PassRefPtrWillBeRawPtr<Range> paragraphRange, int requestNumber = 0);
  48     ~SpellCheckRequest() override;
  49
  50     PassRefPtrWillBeRawPtr<Range> checkingRange() const { return m_checkingRange; }
  51     PassRefPtrWillBeRawPtr<Range> paragraphRange() const { return m_paragraphRange; }
  52     PassRefPtrWillBeRawPtr<Element> rootEditableElement() const { return m_rootEditableElement; }
  53
  54     void setCheckerAndSequence(SpellCheckRequester*, int sequence);
  55 #if !ENABLE(OILPAN)
  56     void requesterDestroyed();
  57 #endif
  58
  59     const TextCheckingRequestData& data() const override;
  60     void didSucceed(const Vector<TextCheckingResult>&) override;
  61     void didCancel() override;
  62
  63     int requestNumber() const { return m_requestNumber; }
  64
  65     DECLARE_VIRTUAL_TRACE();
  66
  67 private:
  68     SpellCheckRequest(PassRefPtrWillBeRawPtr<Range> checkingRange, PassRefPtrWillBeRawPtr<Range> paragraphRange, const String&, TextCheckingTypeMask, TextCheckingProcessType, const Vector<uint32_t>& documentMarkersInRange, const Vector<unsigned>& documentMarkerOffsets, int requestNumber);
  69
  70     RawPtrWillBeMember<SpellCheckRequester> m_requester;
  71     RefPtrWillBeMember<Range> m_checkingRange;
  72     RefPtrWillBeMember<Range> m_paragraphRange;
  73     RefPtrWillBeMember<Element> m_rootEditableElement;
  74     TextCheckingRequestData m_requestData;
  75     int m_requestNumber;
  76 };
  77
  78 class SpellCheckRequester final : public NoBaseWillBeGarbageCollectedFinalized<SpellCheckRequester> {
  79     WTF_MAKE_NONCOPYABLE(SpellCheckRequester); WTF_MAKE_FAST_ALLOCATED_WILL_BE_REMOVED(SpellCheckRequester);
  80 public:
  81     static PassOwnPtrWillBeRawPtr<SpellCheckRequester> create(LocalFrame& frame)
  82     {
  83         return adoptPtrWillBeNoop(new SpellCheckRequester(frame));
  84     }
  85
  86     ~SpellCheckRequester();
  87     DECLARE_TRACE();
  88
  89     bool isAsynchronousEnabled() const;
  90     bool isCheckable(Range*) const;
  91
  92     void requestCheckingFor(PassRefPtrWillBeRawPtr<SpellCheckRequest>);
  93     void cancelCheck();
  94
  95     int lastRequestSequence() const
  96     {
  97         return m_lastRequestSequence;
  98     }
  99
 100     int lastProcessedSequence() const
 101     {
 102         return m_lastProcessedSequence;
 103     }
 104
 105 private:
 106     friend class SpellCheckRequest;
 107
 108     explicit SpellCheckRequester(LocalFrame&);
 109
 110     bool canCheckAsynchronously(Range*) const;
 111     TextCheckerClient& client() const;
 112     void timerFiredToProcessQueuedRequest(Timer<SpellCheckRequester>*);
 113     void invokeRequest(PassRefPtrWillBeRawPtr<SpellCheckRequest>);
 114     void enqueueRequest(PassRefPtrWillBeRawPtr<SpellCheckRequest>);
 115     void didCheckSucceed(int sequence, const Vector<TextCheckingResult>&);
 116     void didCheckCancel(int sequence);
 117     void didCheck(int sequence, const Vector<TextCheckingResult>&);
 118
 119     void clearProcessingRequest();
 120
 121     RawPtrWillBeMember<LocalFrame> m_frame;
 122     LocalFrame& frame() const
 123     {
 124         ASSERT(m_frame);
 125         return *m_frame;
 126     }
 127
 128     int m_lastRequestSequence;
 129     int m_lastProcessedSequence;
 130
 131     Timer<SpellCheckRequester> m_timerToProcessQueuedRequest;
 132
 133     RefPtrWillBeMember<SpellCheckRequest> m_processingRequest;
 134
 135     typedef WillBeHeapDeque<RefPtrWillBeMember<SpellCheckRequest>> RequestQueue;
 136     RequestQueue m_requestQueue;
 137 };
 138
 139 } // namespace blink
 140
 141 #endif // SpellCheckRequester_h