bool
nsTextBoxFrame::UpdateAccesskey(nsWeakFrame& aWeakThis)
{
nsAutoString accesskey;
nsCOMPtr<nsIDOMXULLabelElement> labelElement = do_QueryInterface(mContent);
NS_ENSURE_TRUE(aWeakThis.IsAlive(), false);
if (labelElement) {
// Accesskey may be stored on control.
// Because this method is called by the reflow callback, current context
// may not be the right one. Pushing the context of mContent so that
// if nsIDOMXULLabelElement is implemented in XBL, we don't get a
// security exception.
nsCxPusher cx;
if (cx.Push(mContent)) {
labelElement->GetAccessKey(accesskey);
NS_ENSURE_TRUE(aWeakThis.IsAlive(), false);
}
}
else {
mContent->GetAttr(kNameSpaceID_None, nsGkAtoms::accesskey, accesskey);
}
if (!accesskey.Equals(mAccessKey)) {
// Need to get clean mTitle.
mContent->GetAttr(kNameSpaceID_None, nsGkAtoms::value, mTitle);
mAccessKey = accesskey;
UpdateAccessTitle();
PresContext()->PresShell()->
FrameNeedsReflow(this, nsIPresShell::eStyleChange,
NS_FRAME_IS_DIRTY);
return true;
}
return false;
}
bool
nsTextBoxFrame::UpdateAccesskey(nsWeakFrame& aWeakThis)
{
nsAutoString accesskey;
nsCOMPtr<nsIDOMXULLabelElement> labelElement = do_QueryInterface(mContent);
NS_ENSURE_TRUE(aWeakThis.IsAlive(), false);
if (labelElement) {
// Accesskey may be stored on control.
labelElement->GetAccessKey(accesskey);
NS_ENSURE_TRUE(aWeakThis.IsAlive(), false);
}
else {
mContent->GetAttr(kNameSpaceID_None, nsGkAtoms::accesskey, accesskey);
}
if (!accesskey.Equals(mAccessKey)) {
// Need to get clean mTitle.
RecomputeTitle();
mAccessKey = accesskey;
UpdateAccessTitle();
PresContext()->PresShell()->
FrameNeedsReflow(this, nsIPresShell::eStyleChange,
NS_FRAME_IS_DIRTY);
return true;
}
return false;
}
/* static */ bool
WheelTransaction::WillHandleDefaultAction(WidgetWheelEvent* aWheelEvent,
nsWeakFrame& aTargetWeakFrame)
{
nsIFrame* lastTargetFrame = GetTargetFrame();
if (!lastTargetFrame) {
BeginTransaction(aTargetWeakFrame.GetFrame(), aWheelEvent);
} else if (lastTargetFrame != aTargetWeakFrame.GetFrame()) {
EndTransaction();
BeginTransaction(aTargetWeakFrame.GetFrame(), aWheelEvent);
} else {
UpdateTransaction(aWheelEvent);
}
// When the wheel event will not be handled with any frames,
// UpdateTransaction() fires MozMouseScrollFailed event which is for
// automated testing. In the event handler, the target frame might be
// destroyed. Then, the caller shouldn't try to handle the default action.
if (!aTargetWeakFrame.IsAlive()) {
EndTransaction();
return false;
}
return true;
}
