| Name | Description | Type | Package | Framework |
| PopupPanel | A panel that can "pop up" over other widgets. | Class | com.google.gwt.user.client.ui | Google WebToolkit (GWT) |
| PopupPanel .AnimationType | The type of animation to use when opening the popup. | Class | com.google.gwt.user.client.ui.PopupPanel | Google WebToolkit (GWT) |
| PopupPanel .PositionCallback | A callback that is used to set the position of a PopupPanel right before it is shown. | Interface | com.google.gwt.user.client.ui.PopupPanel | Google WebToolkit (GWT) |
| PopupPanel .ResizeAnimation | Class | com.google.gwt.user.client.ui.PopupPanel | Google WebToolkit (GWT) | |