/*
* Copyright 2012 Vaadin Ltd.
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may not
* use this file except in compliance with the License. You may obtain a copy of
* the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations under
* the License.
*/
package com.vaadin.tests.widgetset.client;
import com.google.gwt.user.client.ui.SimplePanel;
import com.vaadin.client.ComponentConnector;
import com.vaadin.client.ConnectorHierarchyChangeEvent;
import com.vaadin.client.ui.AbstractSingleComponentContainerConnector;
import com.vaadin.shared.Connector;
import com.vaadin.shared.ui.Connect;
import com.vaadin.tests.widgetset.server.UseStateFromHierachyComponent;
@Connect(UseStateFromHierachyComponent.class)
public class UseStateFromHierachyChangeConnector extends
AbstractSingleComponentContainerConnector {
@Override
public SimplePanel getWidget() {
return (SimplePanel) super.getWidget();
}
@Override
public UseStateFromHierachyChangeConnectorState getState() {
return (UseStateFromHierachyChangeConnectorState) super.getState();
}
@Override
public void updateCaption(ComponentConnector connector) {
// Caption not supported
}
@Override
public void onConnectorHierarchyChange(
ConnectorHierarchyChangeEvent connectorHierarchyChangeEvent) {
Connector stateChild = getState().child;
if (stateChild == null) {
if (getChildComponents().size() != 0) {
throw new IllegalStateException(
"Hierarchy has child but state has not");
} else {
getWidget().setWidget(null);
}
} else {
if (getChildComponents().size() != 1
|| getChildComponents().get(0) != stateChild) {
throw new IllegalStateException(
"State has child but hierarchy has not");
} else {
getWidget().setWidget(getChildComponents().get(0).getWidget());
}
}
}
}