def add_element(self, element: IUIElementInterface):
"""
Add a UIElement to the container. The UI's relative_rect parameter will be relative to
this container.
:param element: A UIElement to add to this container.
"""
element.change_layer(self._layer + element.get_starting_height())
self.elements.append(element)
self.calc_add_element_changes_thickness(element)
def calc_add_element_changes_thickness(self, element: IUIElementInterface):
"""
This function checks if a single added element will increase the containers thickness
and if so updates containers recursively.
:param element: the element to check.
"""
if (element.get_top_layer() > self.max_element_top_layer
and element not in self.ui_manager.get_window_stack().get_stack()
and (not isinstance(element, UIContainer) or not element.is_window_root_container)):
self.max_element_top_layer = element.get_top_layer()
self.layer_thickness = self.max_element_top_layer - self._layer
if self.ui_container is not None and self.ui_container != self:
self.ui_container.calc_add_element_changes_thickness(self)
def remove_element(self, element: IUIElementInterface):
"""
Remove a UIElement from this container.
:param element: A UIElement to remove from this container.
"""
if element in self.elements:
self.elements.remove(element)
if element.get_top_layer() == self.max_element_top_layer:
self.recalculate_container_layer_thickness()
def set_focus_element(self, ui_element: IUIElementInterface):
"""
Set an element as the focused element.
If the element is a scroll bar we also keep track of that.
:param ui_element: The element to focus on.
"""
if ui_element is self.focused_element:
return
if self.focused_element is not None:
self.focused_element.unfocus()
self.focused_element = None
if self.focused_element is None:
self.focused_element = ui_element
if ui_element is not None:
self.focused_element.focus()
if 'vertical_scroll_bar' in ui_element.get_element_ids():
self.last_focused_vertical_scrollbar = ui_element
if 'horizontal_scroll_bar' in ui_element.get_element_ids():
self.last_focused_horizontal_scrollbar = ui_element