Example usage for com.google.gwt.gen2.complexpanel.client CollapsiblePanel addCollapsedStateHandler

Introduction

In this page you can find the example usage for com.google.gwt.gen2.complexpanel.client CollapsiblePanel addCollapsedStateHandler.

Prototype

public HandlerRegistration addCollapsedStateHandler(CollapsedStateHandler handler) 

Source Link

Document

Add handler which is called when the widget is shown in its collapsed state.

Usage

From source file:com.google.gwt.gen2.demo.collapsiblepanel.client.CollapsiblePanelDemo.java

License:Apache License

/**
 * This is the entry point method.//ww  w  .  j  av  a  2 s  .  co m
 */
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;
    }
}

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