com.googlecode.simplegwt.tbg.client.TbgEntryPoint.java Source code

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Here is the source code for com.googlecode.simplegwt.tbg.client.TbgEntryPoint.java

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/*
 * Copyright 2009 Isaac Truett.
 * 
 * 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.googlecode.simplegwt.tbg.client;

import com.google.gwt.core.client.EntryPoint;
import com.google.gwt.event.logical.shared.ResizeEvent;
import com.google.gwt.event.logical.shared.ResizeHandler;
import com.google.gwt.user.client.Command;
import com.google.gwt.user.client.Window;
import com.google.gwt.user.client.ui.DecoratorPanel;
import com.google.gwt.user.client.ui.DialogBox;
import com.google.gwt.user.client.ui.FlowPanel;
import com.google.gwt.user.client.ui.Label;
import com.google.gwt.user.client.ui.RootPanel;
import com.googlecode.simplegwt.command.client.ui.CommandLabel;
import com.googlecode.simplegwt.tbg.client.ui.ButtonGrid;
import com.googlecode.simplegwt.tbg.client.ui.GridControls;
import com.googlecode.simplegwt.tbg.client.ui.LoginWidget;

/**
 * EntryPoint for the SimpleGWT ToggleButtonGame (TBG).
 */
public class TbgEntryPoint implements EntryPoint {
    private static final int DEFAULT_GRID_HEIGHT = 5;
    private static final int DEFAULT_GRID_WIDTH = 5;

    /**
     * @see com.google.gwt.core.client.EntryPoint#onModuleLoad()
     */
    public void onModuleLoad() {
        final ButtonGrid buttonGrid = new ButtonGrid(DEFAULT_GRID_HEIGHT, DEFAULT_GRID_WIDTH);
        final GridControls gridControls = new GridControls(buttonGrid);

        final DialogBox dialog = new DialogBox(false, false);
        dialog.setWidget(new Label(
                "Click a button to toggle it on/off. " + "Adjacent buttons will also reverse their state.", true));
        dialog.setText("Help - ToggleButtonGame");
        dialog.addStyleName("tbg-help-dialog");
        final FlowPanel gridHeaderBar = new FlowPanel();
        final Label helpLabel = new CommandLabel("Help", new Command() {
            boolean shownOnce = false;

            public void execute() {
                if (dialog.isShowing()) {
                    dialog.hide();
                } else {
                    if (shownOnce) {
                        dialog.show();
                    } else {
                        dialog.center();
                        shownOnce = true;
                    }
                }
            }
        });
        helpLabel.setStylePrimaryName("tbg-help");
        gridHeaderBar.add(new LoginWidget(gridControls));
        gridHeaderBar.add(helpLabel);

        final DecoratorPanel decoration = new DecoratorPanel();
        final FlowPanel wrapper = new FlowPanel();

        wrapper.add(gridHeaderBar);
        wrapper.add(gridControls);
        wrapper.add(buttonGrid);

        decoration.add(wrapper);

        RootPanel.get("gwt").add(decoration);

        Window.addResizeHandler(new ResizeHandler() {
            public void onResize(ResizeEvent event) {
                resize(event.getHeight(), event.getWidth());
            }
        });

        resize(Window.getClientHeight(), Window.getClientWidth());
    }

    /**
     * Resize the root panel to the new page size.
     * 
     * @param height
     * @param width
     */
    private void resize(final int height, final int width) {
        final RootPanel page = RootPanel.get("page");
        page.setHeight(height + "px");
        page.setWidth(width + "px");
    }
}