com.google.gwt.sample.showcase.client.content.widgets.CwCustomButton.java Source code

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Here is the source code for com.google.gwt.sample.showcase.client.content.widgets.CwCustomButton.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.widgets;

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.Showcase;
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.HTML;
import com.google.gwt.user.client.ui.HorizontalPanel;
import com.google.gwt.user.client.ui.Image;
import com.google.gwt.user.client.ui.PushButton;
import com.google.gwt.user.client.ui.ToggleButton;
import com.google.gwt.user.client.ui.VerticalPanel;
import com.google.gwt.user.client.ui.Widget;

/**
 * Example file.
 */
@ShowcaseStyle({ ".gwt-PushButton", ".gwt-ToggleButton" })
public class CwCustomButton extends ContentWidget {
    /**
     * The constants used in this Content Widget.
     */
    @ShowcaseSource
    public static interface CwConstants extends Constants {
        String cwCustomButtonDescription();

        String cwCustomButtonName();

        String cwCustomButtonPush();

        String cwCustomButtonToggle();
    }

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

    /**
     * Constructor.
     *
     * @param constants the constants
     */
    public CwCustomButton(CwConstants constants) {
        super(constants.cwCustomButtonName(), constants.cwCustomButtonDescription(), true);
        this.constants = constants;
    }

    /**
     * Initialize this example.
     */
    @ShowcaseSource
    @Override
    public Widget onInitialize() {
        // Create a panel to layout the widgets
        VerticalPanel vpanel = new VerticalPanel();
        HorizontalPanel pushPanel = new HorizontalPanel();
        pushPanel.setSpacing(10);
        HorizontalPanel togglePanel = new HorizontalPanel();
        togglePanel.setSpacing(10);

        // Combine all the panels
        vpanel.add(new HTML(constants.cwCustomButtonPush()));
        vpanel.add(pushPanel);
        vpanel.add(new HTML("<br><br>" + constants.cwCustomButtonToggle()));
        vpanel.add(togglePanel);

        // Add a normal PushButton
        PushButton normalPushButton = new PushButton(new Image(Showcase.images.gwtLogo()));
        normalPushButton.ensureDebugId("cwCustomButton-push-normal");
        pushPanel.add(normalPushButton);

        // Add a disabled PushButton
        PushButton disabledPushButton = new PushButton(new Image(Showcase.images.gwtLogo()));
        disabledPushButton.ensureDebugId("cwCustomButton-push-disabled");
        disabledPushButton.setEnabled(false);
        pushPanel.add(disabledPushButton);

        // Add a normal ToggleButton
        ToggleButton normalToggleButton = new ToggleButton(new Image(Showcase.images.gwtLogo()));
        normalToggleButton.ensureDebugId("cwCustomButton-toggle-normal");
        togglePanel.add(normalToggleButton);

        // Add a disabled ToggleButton
        ToggleButton disabledToggleButton = new ToggleButton(new Image(Showcase.images.gwtLogo()));
        disabledToggleButton.ensureDebugId("cwCustomButton-toggle-disabled");
        disabledToggleButton.setEnabled(false);
        togglePanel.add(disabledToggleButton);

        // Return the panel
        return vpanel;
    }

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

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

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