public void insert(final PWidget widget, final String tabText, final int beforeIndex) {
// Detach new child.
widget.removeFromParent();
getChildren().insert(widget, beforeIndex);
// Adopt.
adopt(widget);
final Add addWidget = new Add(widget.getID(), getID());
addWidget.put(PROPERTY.BEFORE_INDEX, beforeIndex);
addWidget.put(PROPERTY.TAB_TEXT, tabText);
getUIContext().stackInstruction(addWidget);
}
@Override
public void onClientData(final JsonObject instruction) {
if (instruction.containsKey(ClientToServerModel.HANDLER_SELECTION.toStringValue())) {
final int widgetId =
instruction
.getJsonNumber(ClientToServerModel.HANDLER_SELECTION.toStringValue())
.intValue();
final PSelectionEvent<PTreeItem> selectionEvent =
new PSelectionEvent<>(this, UIContext.get().getObject(widgetId));
for (final PSelectionHandler<PTreeItem> handler : selectionHandlers) {
handler.onSelection(selectionEvent);
}
} else {
super.onClientData(instruction);
}
}
@Override
protected void init0() {
super.init0();
root.setTree(this);
root.attach(windowID);
}
void adopt(final PWidget widget, final PTreeItem item) {
assert !childWidgets.containsKey(widget);
childWidgets.put(widget, item);
widget.setParent(this);
}
void orphan(final PWidget widget) {
assert widget.getParent() == this;
widget.setParent(null);
childWidgets.remove(widget);
}
