com.google.gwt.sample.showcase.client.content.panels.CwDockPanel.java Source code

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Here is the source code for com.google.gwt.sample.showcase.client.content.panels.CwDockPanel.java

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/*
 * Copyright 2008 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.sample.showcase.client.content.panels;

import com.google.gwt.core.client.GWT;
import com.google.gwt.core.client.RunAsyncCallback;
import com.google.gwt.i18n.client.Constants;
import com.google.gwt.sample.showcase.client.ContentWidget;
import com.google.gwt.sample.showcase.client.ShowcaseAnnotations.ShowcaseData;
import com.google.gwt.sample.showcase.client.ShowcaseAnnotations.ShowcaseSource;
import com.google.gwt.sample.showcase.client.ShowcaseAnnotations.ShowcaseStyle;
import com.google.gwt.user.client.rpc.AsyncCallback;
import com.google.gwt.user.client.ui.DockPanel;
import com.google.gwt.user.client.ui.HTML;
import com.google.gwt.user.client.ui.ScrollPanel;
import com.google.gwt.user.client.ui.Widget;

/**
 * Example file.
 */
@ShowcaseStyle(".cw-DockPanel")
public class CwDockPanel extends ContentWidget {
    /**
     * The constants used in this Content Widget.
     */
    @ShowcaseSource
    public static interface CwConstants extends Constants {

        String cwDockPanelCenter();

        String cwDockPanelDescription();

        String cwDockPanelEast();

        String cwDockPanelName();

        String cwDockPanelNorth1();

        String cwDockPanelNorth2();

        String cwDockPanelSouth1();

        String cwDockPanelSouth2();

        String cwDockPanelWest();
    }

    /**
     * An instance of the constants.
     */
    @ShowcaseData
    private final CwConstants constants;

    /**
     * Constructor.
     *
     * @param constants the constants
     */
    public CwDockPanel(CwConstants constants) {
        super(constants.cwDockPanelName(), constants.cwDockPanelDescription(), true);
        this.constants = constants;
    }

    /**
     * Initialize this example.
     */
    @ShowcaseSource
    @Override
    public Widget onInitialize() {
        // Create a Dock Panel
        DockPanel dock = new DockPanel();
        dock.setStyleName("cw-DockPanel");
        dock.setSpacing(4);
        dock.setHorizontalAlignment(DockPanel.ALIGN_CENTER);

        // Add text all around
        dock.add(new HTML(constants.cwDockPanelNorth1()), DockPanel.NORTH);
        dock.add(new HTML(constants.cwDockPanelSouth1()), DockPanel.SOUTH);
        dock.add(new HTML(constants.cwDockPanelEast()), DockPanel.EAST);
        dock.add(new HTML(constants.cwDockPanelWest()), DockPanel.WEST);
        dock.add(new HTML(constants.cwDockPanelNorth2()), DockPanel.NORTH);
        dock.add(new HTML(constants.cwDockPanelSouth2()), DockPanel.SOUTH);

        // Add scrollable text in the center
        HTML contents = new HTML(constants.cwDockPanelCenter());
        ScrollPanel scroller = new ScrollPanel(contents);
        scroller.setSize("400px", "100px");
        dock.add(scroller, DockPanel.CENTER);

        // Return the content
        dock.ensureDebugId("cwDockPanel");
        return dock;
    }

    @Override
    protected void asyncOnInitialize(final AsyncCallback<Widget> callback) {
        GWT.runAsync(CwDockPanel.class, new RunAsyncCallback() {

            public void onFailure(Throwable caught) {
                callback.onFailure(caught);
            }

            public void onSuccess() {
                callback.onSuccess(onInitialize());
            }
        });
    }
}