C++ (Cpp) Selection::Stringify Examples

Example #1

static void
DispatchSelectionStateChangedEvent(nsIPresShell* aPresShell,
                             nsISelection* aSel,
                             const dom::Sequence<SelectionState>& aStates)
{
  nsIDocument* doc = aPresShell->GetDocument();

  MOZ_ASSERT(doc);

  SelectionStateChangedEventInit init;
  init.mBubbles = true;

  if (aSel) {
    Selection* selection = static_cast<Selection*>(aSel);
    nsRect rect = GetSelectionBoundingRect(selection, doc->GetShell());
    nsRefPtr<DOMRect>domRect = new DOMRect(ToSupports(doc));

    domRect->SetLayoutRect(rect);
    init.mBoundingClientRect = domRect;

    selection->Stringify(init.mSelectedText);
  }
  init.mStates = aStates;

  nsRefPtr<SelectionStateChangedEvent> event =
    SelectionStateChangedEvent::Constructor(doc, NS_LITERAL_STRING("mozselectionstatechanged"), init);

  event->SetTrusted(true);
  event->GetInternalNSEvent()->mFlags.mOnlyChromeDispatch = true;
  bool ret;
  doc->DispatchEvent(event, &ret);
}

Example #2

File: AccessibleCaretManager.cpp Project: Phoxygen/gecko-dev

void
AccessibleCaretManager::DispatchCaretStateChangedEvent(CaretChangedReason aReason) const
{
  // Holding PresShell to prevent AccessibleCaretManager to be destroyed.
  nsCOMPtr<nsIPresShell> presShell = mPresShell;

  FlushLayout();
  if (presShell->IsDestroying()) {
    return;
  }

  Selection* sel = GetSelection();
  if (!sel) {
    return;
  }

  nsIDocument* doc = mPresShell->GetDocument();
  MOZ_ASSERT(doc);

  CaretStateChangedEventInit init;
  init.mBubbles = true;

  const nsRange* range = sel->GetAnchorFocusRange();
  nsINode* commonAncestorNode = nullptr;
  if (range) {
    commonAncestorNode = range->GetCommonAncestor();
  }

  if (!commonAncestorNode) {
    commonAncestorNode = sel->GetFrameSelection()->GetAncestorLimiter();
  }

  RefPtr<DOMRect> domRect = new DOMRect(ToSupports(doc));
  nsRect rect = nsLayoutUtils::GetSelectionBoundingRect(sel);

  nsIFrame* commonAncestorFrame = nullptr;
  nsIFrame* rootFrame = mPresShell->GetRootFrame();

  if (commonAncestorNode && commonAncestorNode->IsContent()) {
    commonAncestorFrame = commonAncestorNode->AsContent()->GetPrimaryFrame();
  }

  if (commonAncestorFrame && rootFrame) {
    nsLayoutUtils::TransformRect(rootFrame, commonAncestorFrame, rect);
    nsRect clampedRect = nsLayoutUtils::ClampRectToScrollFrames(commonAncestorFrame,
                                                                rect);
    nsLayoutUtils::TransformRect(commonAncestorFrame, rootFrame, clampedRect);
    domRect->SetLayoutRect(clampedRect);
    init.mSelectionVisible = !clampedRect.IsEmpty();
  } else {
    domRect->SetLayoutRect(rect);
    init.mSelectionVisible = true;
  }

  // Send isEditable info w/ event detail. This info can help determine
  // whether to show cut command on selection dialog or not.
  init.mSelectionEditable = commonAncestorFrame &&
    GetEditingHostForFrame(commonAncestorFrame);

  init.mBoundingClientRect = domRect;
  init.mReason = aReason;
  init.mCollapsed = sel->IsCollapsed();
  init.mCaretVisible = mFirstCaret->IsLogicallyVisible() ||
                       mSecondCaret->IsLogicallyVisible();
  init.mCaretVisuallyVisible = mFirstCaret->IsVisuallyVisible() ||
                                mSecondCaret->IsVisuallyVisible();
  sel->Stringify(init.mSelectedTextContent);

  RefPtr<CaretStateChangedEvent> event =
    CaretStateChangedEvent::Constructor(doc, NS_LITERAL_STRING("mozcaretstatechanged"), init);

  event->SetTrusted(true);
  event->GetInternalNSEvent()->mFlags.mOnlyChromeDispatch = true;

  AC_LOG("%s: reason %d, collapsed %d, caretVisible %d", __FUNCTION__,
         init.mReason, init.mCollapsed, init.mCaretVisible);

  (new AsyncEventDispatcher(doc, event))->RunDOMEventWhenSafe();
}