/**
* Creates a wave panel.
*
* @param views view bundle
* @param panelDom element in the DOM on which to build the wave panel
* @param container panel to adopt the wave panel's widget, or {@code null} for the wave panel to
* be a root widget
*/
public static WavePanelImpl create(
DomAsViewProvider views, Element panelDom, LogicalPanel container) {
Preconditions.checkArgument(panelDom != null);
EventDispatcherPanel events =
(container != null)
? EventDispatcherPanel.inGwtContext(panelDom, container)
: EventDispatcherPanel.of(panelDom);
WavePanelImpl panel = new WavePanelImpl(views, events);
// Existing content?
Element frameDom = panelDom.getFirstChildElement();
if (frameDom != null) {
panel.init(frameDom);
}
return panel;
}
public void init(Element main) {
Preconditions.checkState(!initialized);
boolean fireEvent; // true if onInit should be fired before exiting.
if (main != null) {
panel.getElement().appendChild(main);
this.main = views.asTopConversation(main);
fireEvent = true;
} else {
// Render empty message.
panel.getElement().setInnerHTML("No conversations in this wave.");
fireEvent = false;
}
initialized = true;
if (fireEvent) {
fireOnInit();
}
}
public void reset() {
Preconditions.checkState(initialized);
boolean fireEvent; // true if onInit should be fired before exiting.
initialized = false;
if (main != null) {
main.remove();
main = null;
fireEvent = true;
} else {
panel.getElement().setInnerHTML("");
fireEvent = false;
}
if (fireEvent) {
fireOnReset();
}
}
/** Destroys this wave panel, releasing its resources. */
public void destroy() {
panel.removeFromParent();
}