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

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

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/*
 * Copyright 2011 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.Label;
import com.google.gwt.user.client.ui.ScrollPanel;
import com.google.gwt.user.client.ui.SplitLayoutPanel;
import com.google.gwt.user.client.ui.Widget;

/**
 * Example file.
 */
@ShowcaseStyle(".gwt-SplitLayoutPanel")
public class CwSplitLayoutPanel extends ContentWidget {
    /**
     * The constants used in this Content Widget.
     */
    @ShowcaseSource
    public static interface CwConstants extends Constants {
        String cwSplitLayoutPanelCenter();

        String cwSplitLayoutPanelDescription();

        String cwSplitLayoutPanelEast();

        String cwSplitLayoutPanelName();

        String cwSplitLayoutPanelNorth1();

        String cwSplitLayoutPanelNorth2();

        String cwSplitLayoutPanelSouth1();

        String cwSplitLayoutPanelSouth2();

        String cwSplitLayoutPanelWest();
    }

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

    /**
     * Constructor.
     * 
     * @param constants the constants
     */
    public CwSplitLayoutPanel(CwConstants constants) {
        super(constants.cwSplitLayoutPanelName(), constants.cwSplitLayoutPanelDescription(), true);
        this.constants = constants;
    }

    @Override
    public boolean hasMargins() {
        return false;
    }

    @Override
    public boolean hasScrollableContent() {
        return false;
    }

    /**
     * Initialize this example.
     */
    @ShowcaseSource
    @Override
    public Widget onInitialize() {
        // Create a Split Panel
        SplitLayoutPanel splitPanel = new SplitLayoutPanel(5);
        splitPanel.ensureDebugId("cwSplitLayoutPanel");
        splitPanel.getElement().getStyle().setProperty("border", "3px solid #e7e7e7");

        // Add text all around.
        splitPanel.addNorth(new Label(constants.cwSplitLayoutPanelNorth1()), 50);
        splitPanel.addSouth(new Label(constants.cwSplitLayoutPanelSouth1()), 50);
        splitPanel.addEast(new Label(constants.cwSplitLayoutPanelEast()), 100);
        splitPanel.addWest(new Label(constants.cwSplitLayoutPanelWest()), 100);
        splitPanel.addNorth(new Label(constants.cwSplitLayoutPanelNorth2()), 50);
        splitPanel.addSouth(new Label(constants.cwSplitLayoutPanelSouth2()), 50);

        // Add scrollable text to the center.
        String centerText = constants.cwSplitLayoutPanelCenter();
        for (int i = 0; i < 3; i++) {
            centerText += " " + centerText;
        }
        Label centerLabel = new Label(centerText);
        ScrollPanel centerScrollable = new ScrollPanel(centerLabel);
        splitPanel.add(centerScrollable);

        // Return the content
        return splitPanel;
    }

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

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

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