'click_item' is emitted when the user clicks the list item
'click_item' 事件在用户点击列表项目时被触发
A container with a layout, when the content size of the container changes, the container will emit this event.
一个具有布局的容器，当容器的内容大小发生改变时，容器会发出该事件。
When the controller list changes, this event will be triggered
当控制器列表发生变化时，会触发该事件
'instance_reload' is emitted when the instance is reloaded
'instance_reload' 事件在实例重新加载时被触发
'popup' is emitted when a popup menu or a drop-down list is displayed
'popup' 事件在显示弹出菜单或下拉列表时被触发
'pull_down_release' is emitted when the user releases the touch at the end of the pull-down refresh
'pull_down_release' 事件在下拉刷新结束时被触发
'pull_up_release' is emitted when the user releases the touch at the end of the pull-up refresh
'pull_up_release' 事件在上拉刷新结束时被触发
When the scroll container scrolls, this event will be triggered
在滚动容器滚动时，会发出此事件
When the scroll container scrolls end, this event will be triggered
当滚动容器滚动结束时，会发出此事件
Blueprintable