/*
* Copyright (c) 2011 PonySDK
* Owners:
* Luciano Broussal <luciano.broussal AT gmail.com>
* Mathieu Barbier <mathieu.barbier AT gmail.com>
* Nicolas Ciaravola <nicolas.ciaravola.pro AT gmail.com>
*
* WebSite:
* http://code.google.com/p/pony-sdk/
*
* 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.ponysdk.ui.server.basic;
import java.util.HashMap;
import java.util.Map;
import com.ponysdk.core.UIContext;
import com.ponysdk.core.main.EntryPoint;
import com.ponysdk.ui.terminal.Dictionnary.PROPERTY;
import com.ponysdk.ui.terminal.WidgetType;
/**
* The panel to which all other widgets must ultimately be added. RootPanels are never created directly.
* Rather, they are accessed via {@link PRootPanel#get()} .
* <p>
* Most applications will add widgets to the default root panel in their {@link EntryPoint#start(UIContext)}
* methods.
* </p>
*/
public class PRootPanel extends PAbsolutePanel {
private static final String ROOTID = "PRootPanel";
private static final String DEFAULTID = "DEFAULT";
private PRootPanel() {}
private PRootPanel(final String id) {
super();
create.put(PROPERTY.ID, id);
}
public static PRootPanel get() {
if (UIContext.getCurrentWindow() == null) return get(0, DEFAULTID);
return get(UIContext.getCurrentWindow().getID(), DEFAULTID);
}
public static PRootPanel get(final String id) {
if (UIContext.getCurrentWindow() == null) return get(0, id);
return get(UIContext.getCurrentWindow().getID(), id);
}
private static PRootPanel get(final long windowID, final String id) {
final Map<String, PRootPanel> childs = ensureChilds(windowID);
PRootPanel defaultRoot = childs.get(id);
if (defaultRoot == null) {
if (id.equals(DEFAULTID)) defaultRoot = new PRootPanel();
else defaultRoot = new PRootPanel(id);
childs.put(id, defaultRoot);
}
return defaultRoot;
}
private static Map<String, PRootPanel> ensureChilds(final long windowID) {
final String rootID = ROOTID + "_" + windowID;
final UIContext session = UIContext.get();
Map<String, PRootPanel> rootByIDs = session.getAttribute(rootID);
if (rootByIDs == null) {
rootByIDs = new HashMap<String, PRootPanel>();
session.setAttribute(rootID, rootByIDs);
}
return rootByIDs;
}
@Override
protected WidgetType getWidgetType() {
return WidgetType.ROOT_PANEL;
}
}