Constructor

Immediately create all descendants.

Avoid using this creationPolicy because it increases the startup time of your application. There is usually no good reason to create components at startup which the user cannot see. If you are using this policy so that you can "push" data into hidden components at startup, you should instead design your application so that the data is stored in data variables and components which are created later "pull" in this data, via databinding or an initialize handler.

Construct all decendants immediately but only inialize those that are visible.

This is useful if you using the container as a dataProvider to a MenuBar, as the MenuBar requires all the children to be created to get the correct dataProvider to drive its content.

Do not create any children.

With this creationPolicy, it is the developer's responsibility to programmatically create the children from the UIComponentDescriptors by calling createComponentsFromDescriptors() on the parent container.

Only construct the immediate descendants and initialize those that are visible.