97 lines
3.6 KiB
Java
97 lines
3.6 KiB
Java
/****************************************************************************
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* This software is part of the gCube Project.
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* Site: http://www.gcube-system.org/
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****************************************************************************
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* The gCube/gCore software is licensed as Free Open Source software
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* conveying to the EUPL (http://ec.europa.eu/idabc/eupl).
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* The software and documentation is provided by its authors/distributors
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* "as is" and no expressed or
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* implied warranty is given for its use, quality or fitness for a
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* particular case.
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****************************************************************************
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* Filename: WidgetsRegistry.java
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****************************************************************************
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* @author <a href="mailto:daniele.strollo@isti.cnr.it">Daniele Strollo</a>
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***************************************************************************/
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package org.gcube.portlets.admin.resourcemanagement.client.widgets.registry;
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import java.util.HashMap;
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import org.gcube.portlets.admin.resourcemanagement.client.widgets.console.ConsolePanel;
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import org.gcube.portlets.admin.resourcemanagement.client.widgets.panels.MainPanel;
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import org.gcube.portlets.admin.resourcemanagement.shared.exceptions.WidgetNotRegistered;
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import org.gcube.resourcemanagement.support.shared.util.Assertion;
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import com.google.gwt.user.client.ui.Widget;
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public class WidgetsRegistry {
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private static final HashMap<String, Object> registeredWidgets = new HashMap<String, Object>();
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public static synchronized void registerWidget(final String ID, final Widget widget) {
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registeredWidgets.put(ID, widget);
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}
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public static synchronized void registerPanel(final String ID, final MainPanel widget) {
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registeredWidgets.put(ID, widget);
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}
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public static synchronized MainPanel getPanel(final String ID) {
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if (!registeredWidgets.containsKey(ID) || !(registeredWidgets.get(ID) instanceof MainPanel)) {
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return null;
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}
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return (MainPanel) registeredWidgets.get(ID);
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}
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public static synchronized Widget getWidget(final String ID) {
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if (!registeredWidgets.containsKey(ID) || !(registeredWidgets.get(ID) instanceof Widget)) {
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return null;
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}
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return (Widget) registeredWidgets.get(ID);
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}
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public static synchronized boolean containsElem(final String ID) {
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return registeredWidgets.containsKey(ID);
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}
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public static synchronized Object getElem(final String key){
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return registeredWidgets.get(key);
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}
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public static synchronized void unregisterWidget(final String key) {
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if (registeredWidgets.containsKey(key)) {
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registeredWidgets.remove(key);
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}
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}
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public static synchronized void registerElem(final String ID, final Object widget) {
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registeredWidgets.put(ID, widget);
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}
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@SuppressWarnings("unchecked")
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public static final synchronized <T> Object getElem(final String key, final Class<T> elemType)
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throws WidgetNotRegistered {
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Assertion<WidgetNotRegistered> checker = new Assertion<WidgetNotRegistered>();
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checker.validate(registeredWidgets.containsKey(key), new WidgetNotRegistered("The widget " + key + " has not be registered"));
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Object retval = registeredWidgets.get(key);
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try {
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return (T) retval;
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} catch (ClassCastException e) {
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throw new WidgetNotRegistered("The registered element is not of declared type");
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}
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}
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/**
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* Utility that returns the singleton instance of console panel.
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* @return null if the console has not been registered
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*/
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public static ConsolePanel getConsole() {
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try {
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return (ConsolePanel) WidgetsRegistry.getElem(UIIdentifiers.CONSOLE_WIDGET_ID, ConsolePanel.class);
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} catch (WidgetNotRegistered e) {
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return null;
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}
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}
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}
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