void InputMethodController::setCompositionFromExistingText(const Vector<CompositionUnderline>& underlines, unsigned compositionStart, unsigned compositionEnd)
{
Node* editable = m_frame->selection().rootEditableElement();
Position base = m_frame->selection().base().downstream();
Node* baseNode = base.anchorNode();
if (editable->firstChild() == baseNode && editable->lastChild() == baseNode && baseNode->isTextNode()) {
m_compositionNode = 0;
m_customCompositionUnderlines.clear();
if (base.anchorType() != Position::PositionIsOffsetInAnchor)
return;
if (!baseNode || baseNode != m_frame->selection().extent().anchorNode())
return;
m_compositionNode = toText(baseNode);
m_compositionStart = compositionStart;
m_compositionEnd = compositionEnd;
m_customCompositionUnderlines = underlines;
size_t numUnderlines = m_customCompositionUnderlines.size();
for (size_t i = 0; i < numUnderlines; ++i) {
m_customCompositionUnderlines[i].startOffset += compositionStart;
m_customCompositionUnderlines[i].endOffset += compositionStart;
}
if (baseNode->renderer())
baseNode->renderer()->repaint();
return;
}
Editor::RevealSelectionScope revealSelectionScope(&editor());
SelectionOffsetsScope selectionOffsetsScope(this);
setSelectionOffsets(PlainTextOffsets(compositionStart, compositionEnd));
setComposition(m_frame->selectedText(), underlines, 0, 0);
}
void InputMethodController::extendSelectionAndDelete(int before, int after)
{
if (!editor().canEdit())
return;
PlainTextRange selectionOffsets(getSelectionOffsets());
if (selectionOffsets.isNull())
return;
// A common call of before=1 and after=0 will fail if the last character
// is multi-code-word UTF-16, including both multi-16bit code-points and
// Unicode combining character sequences of multiple single-16bit code-
// points (officially called "compositions"). Try more until success.
// http://crbug.com/355995
//
// FIXME: Note that this is not an ideal solution when this function is
// called to implement "backspace". In that case, there should be some call
// that will not delete a full multi-code-point composition but rather
// only the last code-point so that it's possible for a user to correct
// a composition without starting it from the beginning.
// http://crbug.com/37993
do {
if (!setSelectionOffsets(PlainTextRange(std::max(static_cast<int>(selectionOffsets.start()) - before, 0), selectionOffsets.end() + after)))
return;
if (before == 0)
break;
++before;
} while (frame().selection().start() == frame().selection().end() && before <= static_cast<int>(selectionOffsets.start()));
TypingCommand::deleteSelection(*frame().document());
}
void InputMethodController::extendSelectionAndDelete(int before, int after)
{
if (!editor().canEdit())
return;
PlainTextRange selectionOffsets(getSelectionOffsets());
if (selectionOffsets.isNull())
return;
setSelectionOffsets(PlainTextRange(std::max(static_cast<int>(selectionOffsets.start()) - before, 0), selectionOffsets.end() + after));
TypingCommand::deleteSelection(*m_frame.document());
}
void InputMethodController::setCompositionFromExistingText(const Vector<CompositionUnderline>& underlines, unsigned compositionStart, unsigned compositionEnd)
{
Element* editable = m_frame.selection().rootEditableElement();
Position base = m_frame.selection().base().downstream();
Node* baseNode = base.anchorNode();
if (editable->firstChild() == baseNode && editable->lastChild() == baseNode && baseNode->isTextNode()) {
m_compositionNode = nullptr;
m_customCompositionUnderlines.clear();
if (base.anchorType() != Position::PositionIsOffsetInAnchor)
return;
if (!baseNode || baseNode != m_frame.selection().extent().anchorNode())
return;
m_compositionNode = toText(baseNode);
RefPtr<Range> range = PlainTextRange(compositionStart, compositionEnd).createRange(*editable);
m_compositionStart = range->startOffset();
m_compositionEnd = range->endOffset();
m_customCompositionUnderlines = underlines;
size_t numUnderlines = m_customCompositionUnderlines.size();
for (size_t i = 0; i < numUnderlines; ++i) {
m_customCompositionUnderlines[i].startOffset += m_compositionStart;
m_customCompositionUnderlines[i].endOffset += m_compositionStart;
}
// TODO(ojan): What was this for? Do we need it in sky since we
// don't need to support legacy IMEs?
if (baseNode->renderer())
baseNode->document().scheduleVisualUpdate();
return;
}
Editor::RevealSelectionScope revealSelectionScope(&editor());
SelectionOffsetsScope selectionOffsetsScope(this);
setSelectionOffsets(PlainTextRange(compositionStart, compositionEnd));
setComposition(m_frame.selectedText(), underlines, 0, 0);
}
void InputMethodController::setCompositionFromExistingText(const Vector<CompositionUnderline>& underlines, unsigned compositionStart, unsigned compositionEnd)
{
Element* editable = frame().selection().rootEditableElement();
Position base = frame().selection().base().downstream();
Node* baseNode = base.anchorNode();
if (baseNode && editable->firstChild() == baseNode && editable->lastChild() == baseNode && baseNode->isTextNode()) {
m_compositionNode = nullptr;
m_customCompositionUnderlines.clear();
if (base.anchorType() != Position::PositionIsOffsetInAnchor)
return;
if (baseNode != frame().selection().extent().anchorNode())
return;
m_compositionNode = toText(baseNode);
RefPtrWillBeRawPtr<Range> range = PlainTextRange(compositionStart, compositionEnd).createRange(*editable);
if (!range)
return;
m_compositionStart = range->startOffset();
m_compositionEnd = range->endOffset();
m_customCompositionUnderlines = underlines;
size_t numUnderlines = m_customCompositionUnderlines.size();
for (size_t i = 0; i < numUnderlines; ++i) {
m_customCompositionUnderlines[i].startOffset += m_compositionStart;
m_customCompositionUnderlines[i].endOffset += m_compositionStart;
}
if (baseNode->layoutObject())
baseNode->layoutObject()->setShouldDoFullPaintInvalidation();
return;
}
Editor::RevealSelectionScope revealSelectionScope(&editor());
SelectionOffsetsScope selectionOffsetsScope(this);
setSelectionOffsets(PlainTextRange(compositionStart, compositionEnd));
setComposition(frame().selectedText(), underlines, 0, 0);
}
bool InputMethodController::setEditableSelectionOffsets(const PlainTextRange& selectionOffsets)
{
if (!editor().canEdit())
return false;
return setSelectionOffsets(selectionOffsets);
}
