/*
* 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.widgetideas.demo.collapsiblepanel.client;
import com.google.gwt.core.client.EntryPoint;
import com.google.gwt.core.client.GWT;
import com.google.gwt.libideas.logging.shared.Log;
import com.google.gwt.user.client.DOM;
import com.google.gwt.user.client.Element;
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.HasHorizontalAlignment;
import com.google.gwt.user.client.ui.HorizontalPanel;
import com.google.gwt.user.client.ui.Label;
import com.google.gwt.user.client.ui.Panel;
import com.google.gwt.user.client.ui.RootPanel;
import com.google.gwt.user.client.ui.ScrollPanel;
import com.google.gwt.user.client.ui.StackPanel;
import com.google.gwt.user.client.ui.ToggleButton;
import com.google.gwt.user.client.ui.Widget;
import com.google.gwt.widgetideas.client.CollapsiblePanel;
import com.google.gwt.widgetideas.client.FastTree;
import com.google.gwt.widgetideas.client.FastTreeItem;
import java.util.ArrayList;
/**
* {@link CollapsiblePanel} demo.
*/
public class CollapsiblePanelDemo implements EntryPoint {
/**
* A special purpose widget to allow scrollable stack panels.
*/
public class MyStackPanel extends StackPanel {
private ArrayList<Widget> scrollers = new ArrayList<Widget>();
public void insert(Widget w, int before) {
ScrollPanel p = new ScrollPanel(w);
p.setWidth("100%");
scrollers.add(before, p);
super.insert(p, before);
}
public void onLoad() {
setWidth("100%");
showStack(getSelectedIndex());
}
/**
* Shows the widget at the specified child index.
*
* @param index the index of the child to be shown
*/
public void showStack(int index) {
super.showStack(index);
if (this.isAttached()) {
ScrollPanel me = (ScrollPanel) scrollers.get(index);
me.setHeight("1px");
Element tr = DOM.getChild(DOM.getFirstChild(getElement()),
index * 2 + 1);
int trHeight = DOM.getElementPropertyInt(tr, "offsetHeight");
me.setHeight(trHeight + "px");
}
}
}
ToggleButton controlButton;
/**
* This is the entry point method.
*/
public void onModuleLoad() {
try {
// Some random contents to make the tree interesting.
Panel contents = createSchoolNavBar();
FastTree.addDefaultCSS();
// The panel.
final CollapsiblePanel panel = new CollapsiblePanel();
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.setWidth("200px");
panel.hookupControlToggle(controlButton);
} catch (RuntimeException e) {
if (GWT.isScript()) {
Log.severe(e.getMessage());
}
throw e;
}
}
private Panel createSchoolNavBar() {
ToggleButton toggler = new ToggleButton("Directory (click to pin)",
"Directory (click to collapse)");
toggler.setStyleName("CollapsibleToggle");
controlButton = toggler;
MyStackPanel wrapper = new MyStackPanel();
FlowPanel navBar = new FlowPanel();
navBar.setSize("200px", "100%");
HorizontalPanel panel = new HorizontalPanel();
panel.setWidth("100%");
panel.setCellHorizontalAlignment(controlButton,
HasHorizontalAlignment.ALIGN_LEFT);
panel.add(controlButton);
panel.setCellWidth(controlButton, "1px");
panel.setCellHorizontalAlignment(controlButton,
HorizontalPanel.ALIGN_CENTER);
navBar.add(panel);
panel.setStyleName("nav-Tree-title");
wrapper = new MyStackPanel();
wrapper.setHeight("250px");
final FastTree contents = new FastTree();
wrapper.add(contents, "<b>People</b>", true);
wrapper.add(new Label("None"), "<b>Academics</b>", true);
navBar.add(wrapper);
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;
}
}