com.google.gwt.gen2.demo.collapsiblepanel.client.CollapsiblePanelDemo.java Source code

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Here is the source code for com.google.gwt.gen2.demo.collapsiblepanel.client.CollapsiblePanelDemo.java

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/*
 * Copyright 2007 Google Inc.
 * 
 * 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.google.gwt.gen2.demo.collapsiblepanel.client;

import com.google.gwt.core.client.EntryPoint;
import com.google.gwt.core.client.GWT;
import com.google.gwt.gen2.complexpanel.client.CollapsiblePanel;
import com.google.gwt.gen2.complexpanel.client.FastTree;
import com.google.gwt.gen2.complexpanel.client.FastTreeItem;
import com.google.gwt.gen2.complexpanel.client.CollapsiblePanel.CollapsedStateEvent;
import com.google.gwt.gen2.complexpanel.client.CollapsiblePanel.CollapsedStateHandler;
import com.google.gwt.gen2.complexpanel.client.CollapsiblePanel.ExpandedStateEvent;
import com.google.gwt.gen2.complexpanel.client.CollapsiblePanel.ExpandedStateHandler;
import com.google.gwt.gen2.logging.shared.Log;
import com.google.gwt.i18n.client.LocaleInfo;
import com.google.gwt.user.client.Window;
import com.google.gwt.user.client.Window.Location;
import com.google.gwt.user.client.ui.FlowPanel;
import com.google.gwt.user.client.ui.Panel;
import com.google.gwt.user.client.ui.RootPanel;
import com.google.gwt.user.client.ui.ToggleButton;

/**
 * {@link CollapsiblePanel} demo.
 */
public class CollapsiblePanelDemo implements EntryPoint {

    private ToggleButton controlButton;

    /**
     * This is the entry point method.
     */
    public void onModuleLoad() {
        try {

            // Some random contents to make the tree interesting.
            Panel contents = createSchoolNavBar();
            FastTree.injectDefaultCss();
            CollapsiblePanel.injectDefaultCss();

            // The panel.
            final CollapsiblePanel panel = new CollapsiblePanel();
            panel.addCollapsedStateHandler(new CollapsedStateHandler() {
                public void onCollapsedState(CollapsedStateEvent e) {
                    Window.alert("panel collapsed");
                }
            });

            panel.addExpandedStateHandler(new ExpandedStateHandler() {
                public void onExpandedState(ExpandedStateEvent e) {
                    Window.alert("panel expanded");
                }
            });

            String value = Location.getParameter("collapsed");
            if (value != null) {
                value = value.trim();
                if (value.equals("true")) {
                    panel.setCollapsedState(true);
                } else if (value.equals("false")) {
                    // do nothing, default.
                } else {
                    Window.alert("collapsed should not be given " + value + " use true or false instead");
                }
            }
            RootPanel.get("collapsible-panel").add(panel);
            panel.add(contents);
            panel.setHeight(Window.getClientHeight() - 1 + "px");
            panel.hookupControlToggle(controlButton);
        } catch (RuntimeException e) {
            if (GWT.isScript()) {
                Log.severe(e.getMessage());
            }
            throw e;
        }
    }

    private Panel createSchoolNavBar() {
        controlButton = new ToggleButton();
        if (LocaleInfo.getCurrentLocale().isRTL()) {
            controlButton.getUpFace().setHTML("<i>click to pin &larr; </i>");
            controlButton.getDownFace().setHTML("<i> &rarr; click to collapse</i>  ");
        } else {
            controlButton.getUpFace().setHTML("<i>click to pin &rarr;</i>");
            controlButton.getDownFace().setHTML("<i>&larr; click to collapse</i> ");
        }

        FlowPanel navBar = new FlowPanel();
        navBar.setSize("200px", "");

        navBar.add(controlButton);
        controlButton.setStylePrimaryName("CollapsibleTitle");

        final FastTree contents = new FastTree();
        navBar.add(contents);

        FastTreeItem students = contents.addItem("Students");
        students.addItem("Jill");
        students.addItem("Jack");
        students.addItem("Molly");
        students.addItem("Ms. Muffat");

        FastTreeItem teachers = contents.addItem("Teachers");
        teachers.addItem("Mrs Black");
        teachers.addItem("Mr White");

        FastTreeItem admin = contents.addItem("Administrators");
        admin.addItem("The Soup Nazi");
        admin.addItem("The Grand High Supreme Master Pubba");
        return navBar;
    }
}