void Stage::DestroyElement(ElementPtr inElement) {
wxString name = inElement->GetName();
// Make sure this element isn't on our drawing context stack.
if (mDrawingContextStack->ContainsElement(inElement))
gLog.Fatal("halyard.element",
"%s: Tried to delete element with an active drawing context",
inElement->GetLogName());
// Clean up any dangling references to this object.
if (inElement == mGrabbedElement)
MouseUngrab(mGrabbedElement);
if (inElement == mCurrentElement)
mCurrentElement = ElementPtr();
if (inElement == mCurrentElementNamedInStatusBar)
mCurrentElementNamedInStatusBar = ElementPtr();
MediaElementPtr as_media(inElement, dynamic_cast_tag());
if (as_media && as_media == mWaitElement)
EndWait();
// If the element we're deleting is a CursorElement, then we need to
// tell it to unregister itself, and then update the cursor we're
// displaying in case it has changed. This takes care of
// mDesiredCursor and mActualCursor.
shared_ptr<CursorElement> as_cursor_elem(inElement, dynamic_cast_tag());
if (as_cursor_elem) {
as_cursor_elem->UnregisterWithCursorManager(mCursorManager);
Cursor *as_cursor(static_cast<Cursor*>(as_cursor_elem.get()));
if (as_cursor == mDesiredCursor)
ReplaceDisplayedCursorWithDefault();
ASSERT(as_cursor != mDesiredCursor);
ASSERT(as_cursor != mActualCursor);
}
// We don't have to destroy the object explicity, because the
// ElementPtr smart-pointer class will take care of that for us.
//
// TODO - Implemented delayed destruction so element callbacks can
// destroy the element they're attached to.
gLog.Trace("halyard.element", "%s: Removed from stage",
inElement->GetLogName());
}
void Stage::AddElement(ElementPtr inElement) {
// Delete any existing Element with the same name.
(void) DeleteElementByName(inElement->GetName());
// Add the new Element to our list.
gLog.Trace("halyard.element", "%s: Added to stage",
inElement->GetLogName());
mElements.push_back(inElement);
NotifyElementsChanged();
}
