bool isSameAsAlreadySelectedElement(GuiElement element)
{
// is not the same if no element is selected
if (!selectionTracker.isAnyGuiElementSelected)
{
return(false);
}
return(element == selectionTracker.selectedElement);
}
void trySendDeselectionToElementIfNotSameElement(GuiElement element)
{
// if no element is/was selected we can't send it an deselection event
if (!selectionTracker.isAnyGuiElementSelected)
{
return;
}
// if it is the same gui element sending it a deselection event is useless
if (isSameAsAlreadySelectedElement(element))
{
return;
}
// all fine, send delesection event
sendDelesectionEventTo(selectionTracker.selectedElement);
}
// called from outside when the mouse button was released
public void eventMouseReleased(SpatialVectorDouble mousePosition)
{
IEnumerable <GuiElement> guiElementsUnderMousePositionAsEnumerable =
positionChecker.getElementsWhichOverlapTheMousePosition(mousePosition);
IList <GuiElement> guiElementsUnderMousePosition = new List <GuiElement>(guiElementsUnderMousePositionAsEnumerable);
if (guiElementsUnderMousePosition.Count > 0)
{
// change the selection
// we just take first GuiElement in case of multiple
// NOTE< could be a problem if there are multiple elements under the mouse position, we let it this way for now >
GuiElement elementUnderMousePosition = guiElementsUnderMousePosition[0];
// delesection
trySendDeselectionToElementIfNotSameElement(elementUnderMousePosition);
// selection
if (!isSameAsAlreadySelectedElement(elementUnderMousePosition))
{
changeSelectionTo(elementUnderMousePosition);
}
}
}
public void removeAndDisposeGuiElement(GuiElement element)
{
guiElements.elements.Remove(element);
// TODO< dispose >
}
public void addGuiElement(GuiElement element)
{
guiElements.elements.Add(element);
}
void sendDelesectionEventTo(GuiElement element)
{
throw new NotImplementedException(); // TODO
}
void changeSelectionTo(GuiElement element)
{
selectionTracker.selectedElement = element;
sendSelectionEventTo(element);
}