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/*
* 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
* "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 THE COPYRIGHT
* OWNER 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 "core/html/ime/InputMethodContext.h"
#include "core/dom/Document.h"
#include "core/dom/Text.h"
#include "core/editing/InputMethodController.h"
#include "core/frame/LocalFrame.h"
namespace WebCore {
PassOwnPtrWillBeRawPtr<InputMethodContext> InputMethodContext::create(HTMLElement* element)
{
return adoptPtrWillBeRefCountedGarbageCollected(new InputMethodContext(element));
}
InputMethodContext::InputMethodContext(HTMLElement* element)
: m_element(element)
{
ScriptWrappable::init(this);
}
InputMethodContext::~InputMethodContext()
{
}
String InputMethodContext::locale() const
{
// FIXME: Implement this.
return emptyString();
}
HTMLElement* InputMethodContext::target() const
{
return m_element;
}
unsigned InputMethodContext::compositionStartOffset()
{
if (hasFocus())
return inputMethodController().compositionStart();
return 0;
}
unsigned InputMethodContext::compositionEndOffset()
{
if (hasFocus())
return inputMethodController().compositionEnd();
return 0;
}
void InputMethodContext::confirmComposition()
{
if (hasFocus())
inputMethodController().confirmCompositionAndResetState();
}
bool InputMethodContext::hasFocus() const
{
LocalFrame* frame = m_element->document().frame();
if (!frame)
return false;
const Element* element = frame->document()->focusedElement();
return element && element->isHTMLElement() && m_element == toHTMLElement(element);
}
String InputMethodContext::compositionText() const
{
if (!hasFocus())
return emptyString();
Text* text = inputMethodController().compositionNode();
return text ? text->wholeText() : emptyString();
}
CompositionUnderline InputMethodContext::selectedSegment() const
{
CompositionUnderline underline;
if (!hasFocus())
return underline;
const InputMethodController& controller = inputMethodController();
if (!controller.hasComposition())
return underline;
Vector<CompositionUnderline> underlines = controller.customCompositionUnderlines();
for (size_t i = 0; i < underlines.size(); ++i) {
if (underlines[i].thick)
return underlines[i];
}
// When no underline information is available while composition exists,
// build a CompositionUnderline whose element is the whole composition.
underline.endOffset = controller.compositionEnd() - controller.compositionStart();
return underline;
}
int InputMethodContext::selectionStart() const
{
return selectedSegment().startOffset;
}
int InputMethodContext::selectionEnd() const
{
return selectedSegment().endOffset;
}
const Vector<unsigned>& InputMethodContext::segments()
{
m_segments.clear();
if (!hasFocus())
return m_segments;
const InputMethodController& controller = inputMethodController();
if (!controller.hasComposition())
return m_segments;
Vector<CompositionUnderline> underlines = controller.customCompositionUnderlines();
if (!underlines.size()) {
m_segments.append(0);
} else {
for (size_t i = 0; i < underlines.size(); ++i)
m_segments.append(underlines[i].startOffset);
}
return m_segments;
}
InputMethodController& InputMethodContext::inputMethodController() const
{
return m_element->document().frame()->inputMethodController();
}
const AtomicString& InputMethodContext::interfaceName() const
{
return EventTargetNames::InputMethodContext;
}
ExecutionContext* InputMethodContext::executionContext() const
{
return &m_element->document();
}
void InputMethodContext::dispatchCandidateWindowShowEvent()
{
dispatchEvent(Event::create(EventTypeNames::candidatewindowshow));
}
void InputMethodContext::dispatchCandidateWindowUpdateEvent()
{
dispatchEvent(Event::create(EventTypeNames::candidatewindowupdate));
}
void InputMethodContext::dispatchCandidateWindowHideEvent()
{
dispatchEvent(Event::create(EventTypeNames::candidatewindowhide));
}
void InputMethodContext::trace(Visitor* visitor)
{
visitor->trace(m_element);
EventTargetWithInlineData::trace(visitor);
}
} // namespace WebCore
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