/*******************************************************************************
* Copyright 2015 xWic group (http://www.xwic.de)
*
* 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 de.jwic.demo;
import de.jwic.base.ControlContainer;
import de.jwic.base.IControlContainer;
import de.jwic.controls.LabelControl;
import de.jwic.util.SerObservable;
import de.jwic.util.SerObserver;
/**
* The host is displaying one demo at a time. If a user switches modules, the old one gets destroyed
* so that resources are freed up again. This is a good practice as you would not want the entire application
* stack to be in memory.
*
* @author lippisch
*/
public class DemoHost extends ControlContainer {
private DemoModel model;
private LabelControl lbTitle;
private LabelControl lbDescription;
private ControlContainer content;
/**
* @param container
* @param name
*/
public DemoHost(IControlContainer container, String name, DemoModel model) {
super(container, name);
this.model = model;
lbTitle = new LabelControl(this, "lbTitle");
lbTitle.setText("Choose your Demo!");
lbDescription = new LabelControl(this, "lbDescription");
lbDescription.setText("");
// create dummy control as current demo content
content = new ControlContainer(this, "demo");
model.addObserver(new SerObserver() {
@Override
public void update(SerObservable o, Object arg) {
onModuleChange();
}
});
}
/**
*
*/
protected void onModuleChange() {
DemoModule module = model.getActiveModule();
if (module != null) {
lbTitle.setText(module.getTitle());
lbDescription.setText(module.getDescription());
// clear content
content.destroy();
content = new ControlContainer(this, "demo");
module.createModule(content);
requireRedraw();
}
}
}