// Manual drag caret manipulation
void DragController::placeDragCaret(const IntPoint& windowPoint)
{
mouseMovedIntoDocument(m_page->mainFrame()->documentAtPoint(windowPoint));
if (!m_documentUnderMouse)
return;
Frame* frame = m_documentUnderMouse->frame();
FrameView* frameView = frame->view();
if (!frameView)
return;
IntPoint framePoint = frameView->windowToContents(windowPoint);
VisibleSelection dragCaret(frame->visiblePositionForPoint(framePoint));
m_page->dragCaretController()->setSelection(dragCaret);
}
// Manual drag caret manipulation
void DragController::placeDragCaret(const IntPoint& windowPoint)
{
Frame* mainFrame = m_page->mainFrame();
Document* newDraggingDoc = mainFrame->documentAtPoint(windowPoint);
if (m_document != newDraggingDoc) {
if (m_document)
cancelDrag();
m_document = newDraggingDoc;
}
if (!m_document)
return;
Frame* frame = m_document->frame();
ASSERT(frame);
FrameView* frameView = frame->view();
if (!frameView)
return;
IntPoint framePoint = frameView->windowToContents(windowPoint);
Selection dragCaret(frame->visiblePositionForPoint(framePoint));
m_page->dragCaretController()->setSelection(dragCaret);
}
bool DragController::concludeEditDrag(DragData* dragData)
{
ASSERT(dragData);
ASSERT(!m_isHandlingDrag);
if (!m_documentUnderMouse)
return false;
IntPoint point = m_documentUnderMouse->view()->windowToContents(dragData->clientPosition());
Element* element = elementUnderMouse(m_documentUnderMouse, point);
Frame* innerFrame = element->ownerDocument()->frame();
ASSERT(innerFrame);
if (dragData->containsColor()) {
Color color = dragData->asColor();
if (!color.isValid())
return false;
if (!innerFrame)
return false;
RefPtr<Range> innerRange = innerFrame->selection()->toNormalizedRange();
RefPtr<CSSStyleDeclaration> style = m_documentUnderMouse->createCSSStyleDeclaration();
ExceptionCode ec;
style->setProperty("color", color.name(), ec);
if (!innerFrame->editor()->shouldApplyStyle(style.get(), innerRange.get()))
return false;
m_client->willPerformDragDestinationAction(DragDestinationActionEdit, dragData);
innerFrame->editor()->applyStyle(style.get(), EditActionSetColor);
return true;
}
if (!m_page->dragController()->canProcessDrag(dragData)) {
m_page->dragCaretController()->clear();
return false;
}
if (HTMLInputElement* fileInput = asFileInput(element)) {
if (!fileInput->isEnabledFormControl())
return false;
if (!dragData->containsFiles())
return false;
Vector<String> filenames;
dragData->asFilenames(filenames);
if (filenames.isEmpty())
return false;
// Ugly. For security none of the APIs available to us can set the input value
// on file inputs. Even forcing a change in HTMLInputElement doesn't work as
// RenderFileUploadControl clears the file when doing updateFromElement().
RenderFileUploadControl* renderer = toRenderFileUploadControl(fileInput->renderer());
if (!renderer)
return false;
renderer->receiveDroppedFiles(filenames);
return true;
}
VisibleSelection dragCaret(m_page->dragCaretController()->selection());
m_page->dragCaretController()->clear();
RefPtr<Range> range = dragCaret.toNormalizedRange();
// For range to be null a WebKit client must have done something bad while
// manually controlling drag behaviour
if (!range)
return false;
DocLoader* loader = range->ownerDocument()->docLoader();
loader->setAllowStaleResources(true);
if (dragIsMove(innerFrame->selection()) || dragCaret.isContentRichlyEditable()) {
bool chosePlainText = false;
RefPtr<DocumentFragment> fragment = documentFragmentFromDragData(dragData, range, true, chosePlainText);
if (!fragment || !innerFrame->editor()->shouldInsertFragment(fragment, range, EditorInsertActionDropped)) {
loader->setAllowStaleResources(false);
return false;
}
m_client->willPerformDragDestinationAction(DragDestinationActionEdit, dragData);
if (dragIsMove(innerFrame->selection())) {
bool smartMove = innerFrame->selectionGranularity() == WordGranularity
&& innerFrame->editor()->smartInsertDeleteEnabled()
&& dragData->canSmartReplace();
applyCommand(MoveSelectionCommand::create(fragment, dragCaret.base(), smartMove));
} else {
if (setSelectionToDragCaret(innerFrame, dragCaret, range, point))
applyCommand(ReplaceSelectionCommand::create(m_documentUnderMouse, fragment, true, dragData->canSmartReplace(), chosePlainText));
}
} else {
String text = dragData->asPlainText();
if (text.isEmpty() || !innerFrame->editor()->shouldInsertText(text, range.get(), EditorInsertActionDropped)) {
loader->setAllowStaleResources(false);
return false;
}
m_client->willPerformDragDestinationAction(DragDestinationActionEdit, dragData);
if (setSelectionToDragCaret(innerFrame, dragCaret, range, point))
applyCommand(ReplaceSelectionCommand::create(m_documentUnderMouse, createFragmentFromText(range.get(), text), true, false, true));
}
loader->setAllowStaleResources(false);
return true;
}
