insertDrawables method

void insertDrawables(
  1. int index,
  2. Iterable<Drawable> drawables, {
  3. bool newAction = true,
})

Inserts the drawables to the controller value drawables at the provided index.

If newAction is true, the action is added as an independent action and can be undone in the future. If it is false, the action is connected to the previous action and is merged with it.

Calling this will notify all the listeners of this PainterController that they need to update (it calls notifyListeners). For this reason, this method should only be called between frames, e.g. in response to user actions, not during the build, layout, or paint phases.

Implementation

void insertDrawables(int index, Iterable<Drawable> drawables,
    {bool newAction = true}) {
  final action = InsertDrawablesAction(index, drawables.toList());
  action.perform(this);
  _addAction(action, newAction);
}