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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 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 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.
*/
#include "config.h"
#include "SpellChecker.h"
#include "Document.h"
#include "DocumentMarkerController.h"
#include "Editing.h"
#include "Editor.h"
#include "Frame.h"
#include "Page.h"
#include "PositionIterator.h"
#include "RenderObject.h"
#include "Settings.h"
#include "TextCheckerClient.h"
#include "TextCheckingHelper.h"
namespace WebCore {
SpellCheckRequest::SpellCheckRequest(Ref<Range>&& checkingRange, Ref<Range>&& paragraphRange, const String& text, TextCheckingTypeMask mask, TextCheckingProcessType processType)
: m_checkingRange(WTFMove(checkingRange))
, m_paragraphRange(WTFMove(paragraphRange))
, m_rootEditableElement(m_checkingRange->startContainer().rootEditableElement())
, m_requestData(unrequestedTextCheckingSequence, text, mask, processType)
{
}
SpellCheckRequest::~SpellCheckRequest() = default;
RefPtr<SpellCheckRequest> SpellCheckRequest::create(TextCheckingTypeMask textCheckingOptions, TextCheckingProcessType processType, Ref<Range>&& checkingRange, Ref<Range>&& paragraphRange)
{
String text = checkingRange->text();
if (!text.length())
return nullptr;
return adoptRef(*new SpellCheckRequest(WTFMove(checkingRange), WTFMove(paragraphRange), text, textCheckingOptions, processType));
}
const TextCheckingRequestData& SpellCheckRequest::data() const
{
return m_requestData;
}
void SpellCheckRequest::didSucceed(const Vector<TextCheckingResult>& results)
{
if (!m_checker)
return;
Ref<SpellCheckRequest> protectedThis(*this);
m_checker->didCheckSucceed(m_requestData.sequence(), results);
m_checker = nullptr;
}
void SpellCheckRequest::didCancel()
{
if (!m_checker)
return;
Ref<SpellCheckRequest> protectedThis(*this);
m_checker->didCheckCancel(m_requestData.sequence());
m_checker = nullptr;
}
void SpellCheckRequest::setCheckerAndSequence(SpellChecker* requester, int sequence)
{
ASSERT(!m_checker);
ASSERT(m_requestData.sequence() == unrequestedTextCheckingSequence);
m_checker = requester;
m_requestData.m_sequence = sequence;
}
void SpellCheckRequest::requesterDestroyed()
{
m_checker = nullptr;
}
SpellChecker::SpellChecker(Frame& frame)
: m_frame(frame)
, m_lastRequestSequence(0)
, m_lastProcessedSequence(0)
, m_timerToProcessQueuedRequest(*this, &SpellChecker::timerFiredToProcessQueuedRequest)
{
}
SpellChecker::~SpellChecker()
{
if (m_processingRequest)
m_processingRequest->requesterDestroyed();
for (auto& queue : m_requestQueue)
queue->requesterDestroyed();
}
TextCheckerClient* SpellChecker::client() const
{
Page* page = m_frame.page();
if (!page)
return nullptr;
return page->editorClient().textChecker();
}
void SpellChecker::timerFiredToProcessQueuedRequest()
{
ASSERT(!m_requestQueue.isEmpty());
if (m_requestQueue.isEmpty())
return;
invokeRequest(m_requestQueue.takeFirst());
}
bool SpellChecker::isAsynchronousEnabled() const
{
return m_frame.settings().asynchronousSpellCheckingEnabled();
}
bool SpellChecker::canCheckAsynchronously(Range& range) const
{
return client() && isCheckable(range) && isAsynchronousEnabled();
}
bool SpellChecker::isCheckable(Range& range) const
{
if (!range.firstNode() || !range.firstNode()->renderer())
return false;
const Node& node = range.startContainer();
if (is<Element>(node) && !downcast<Element>(node).isSpellCheckingEnabled())
return false;
return true;
}
void SpellChecker::requestCheckingFor(Ref<SpellCheckRequest>&& request)
{
if (!canCheckAsynchronously(request->paragraphRange()))
return;
ASSERT(request->data().sequence() == unrequestedTextCheckingSequence);
int sequence = ++m_lastRequestSequence;
if (sequence == unrequestedTextCheckingSequence)
sequence = ++m_lastRequestSequence;
request->setCheckerAndSequence(this, sequence);
if (m_timerToProcessQueuedRequest.isActive() || m_processingRequest) {
enqueueRequest(WTFMove(request));
return;
}
invokeRequest(WTFMove(request));
}
void SpellChecker::invokeRequest(Ref<SpellCheckRequest>&& request)
{
ASSERT(!m_processingRequest);
if (!client())
return;
m_processingRequest = WTFMove(request);
client()->requestCheckingOfString(*m_processingRequest, m_frame.selection().selection());
}
void SpellChecker::enqueueRequest(Ref<SpellCheckRequest>&& request)
{
for (auto& queue : m_requestQueue) {
if (request->rootEditableElement() != queue->rootEditableElement())
continue;
queue = WTFMove(request);
return;
}
m_requestQueue.append(WTFMove(request));
}
void SpellChecker::didCheck(int sequence, const Vector<TextCheckingResult>& results)
{
ASSERT(m_processingRequest);
ASSERT(m_processingRequest->data().sequence() == sequence);
if (m_processingRequest->data().sequence() != sequence) {
m_requestQueue.clear();
return;
}
m_frame.editor().markAndReplaceFor(*m_processingRequest, results);
if (m_lastProcessedSequence < sequence)
m_lastProcessedSequence = sequence;
m_processingRequest = nullptr;
if (!m_requestQueue.isEmpty())
m_timerToProcessQueuedRequest.startOneShot(0_s);
}
void SpellChecker::didCheckSucceed(int sequence, const Vector<TextCheckingResult>& results)
{
TextCheckingRequestData requestData = m_processingRequest->data();
if (requestData.sequence() == sequence) {
OptionSet<DocumentMarker::MarkerType> markerTypes;
if (requestData.mask() & TextCheckingTypeSpelling)
markerTypes |= DocumentMarker::Spelling;
if (requestData.mask() & TextCheckingTypeGrammar)
markerTypes |= DocumentMarker::Grammar;
if (!markerTypes.isEmpty())
m_frame.document()->markers().removeMarkers(&m_processingRequest->checkingRange(), markerTypes);
}
didCheck(sequence, results);
}
void SpellChecker::didCheckCancel(int sequence)
{
didCheck(sequence, Vector<TextCheckingResult>());
}
} // namespace WebCore