void FrameCaret::invalidateCaretRect(bool forceInvalidation) {
if (!m_caretRectDirty)
return;
m_caretRectDirty = false;
DCHECK(caretPositionIsValidForDocument(*m_frame->document()));
LayoutObject* layoutObject = nullptr;
LayoutRect newRect;
PositionWithAffinity currentCaretPosition = caretPosition();
if (isActive())
newRect = localCaretRectOfPosition(currentCaretPosition, layoutObject);
Node* newNode = layoutObject ? layoutObject->node() : nullptr;
// The current selected node |newNode| could be a child multiple levels below
// its associated "anchor node" ancestor, so we reference and keep around the
// anchor node for checking editability.
// TODO(wkorman): Consider storing previous Position, rather than Node, and
// making use of EditingUtilies::isEditablePosition() directly.
Node* newAnchorNode =
currentCaretPosition.position().parentAnchoredEquivalent().anchorNode();
if (newNode && newAnchorNode && newNode != newAnchorNode &&
newAnchorNode->layoutObject() && newAnchorNode->layoutObject()->isBox()) {
newNode->layoutObject()->mapToVisualRectInAncestorSpace(
toLayoutBoxModelObject(newAnchorNode->layoutObject()), newRect);
}
// It's possible for the timer to be inactive even though we want to
// invalidate the caret. For example, when running as a layout test the
// caret blink interval could be zero and thus |m_caretBlinkTimer| will
// never be started. We provide |forceInvalidation| for use by paint
// invalidation internals where we need to invalidate the caret regardless
// of timer state.
if (!forceInvalidation && !m_caretBlinkTimer.isActive() &&
newNode == m_previousCaretNode && newRect == m_previousCaretRect &&
m_caretVisibility == m_previousCaretVisibility)
return;
if (m_previousCaretAnchorNode &&
shouldRepaintCaret(*m_previousCaretAnchorNode)) {
invalidateLocalCaretRect(m_previousCaretAnchorNode.get(),
m_previousCaretRect);
}
if (newAnchorNode && shouldRepaintCaret(*newAnchorNode))
invalidateLocalCaretRect(newAnchorNode, newRect);
m_previousCaretNode = newNode;
m_previousCaretAnchorNode = newAnchorNode;
m_previousCaretRect = newRect;
m_previousCaretVisibility = m_caretVisibility;
}
void CaretBase::invalidateCaretRect(Node* node, bool caretRectChanged)
{
if (caretRectChanged)
return;
if (LayoutView* view = node->document().layoutView()) {
if (node->isContentEditable(Node::UserSelectAllIsAlwaysNonEditable) || shouldRepaintCaret(view))
invalidateLocalCaretRect(node, localCaretRectWithoutUpdate());
}
}