com.google.gwt.sample.showcase.client.content.popups.CwBasicPopup.java Source code

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Here is the source code for com.google.gwt.sample.showcase.client.content.popups.CwBasicPopup.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.popups;

import com.google.gwt.core.client.GWT;
import com.google.gwt.core.client.RunAsyncCallback;
import com.google.gwt.event.dom.client.ClickEvent;
import com.google.gwt.event.dom.client.ClickHandler;
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.Button;
import com.google.gwt.user.client.ui.DecoratedPopupPanel;
import com.google.gwt.user.client.ui.HTML;
import com.google.gwt.user.client.ui.Image;
import com.google.gwt.user.client.ui.PopupPanel;
import com.google.gwt.user.client.ui.VerticalPanel;
import com.google.gwt.user.client.ui.Widget;

/**
 * Example file.
 */
@ShowcaseStyle({ ".gwt-PopupPanel", "html>body .gwt-PopupPanel", "* html .gwt-PopupPanel",
        ".gwt-DecoratedPopupPanel", "html>body .gwt-DecoratedPopupPanel", "* html .gwt-DecoratedPopupPanel" })
public class CwBasicPopup extends ContentWidget {
    /**
     * The constants used in this Content Widget.
     */
    @ShowcaseSource
    public static interface CwConstants extends Constants {
        String cwBasicPopupClickOutsideInstructions();

        String cwBasicPopupDescription();

        String cwBasicPopupInstructions();

        String cwBasicPopupName();

        String cwBasicPopupShowButton();
    }

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

    /**
     * Constructor.
     *
     * @param constants the constants
     */
    public CwBasicPopup(CwConstants constants) {
        super(constants.cwBasicPopupName(), constants.cwBasicPopupDescription(), true);
        this.constants = constants;
    }

    /**
     * Initialize this example.
     */
    @ShowcaseSource
    @Override
    public Widget onInitialize() {
        // Create a basic popup widget
        final DecoratedPopupPanel simplePopup = new DecoratedPopupPanel(true);
        simplePopup.ensureDebugId("cwBasicPopup-simplePopup");
        simplePopup.setWidth("150px");
        simplePopup.setWidget(new HTML(constants.cwBasicPopupClickOutsideInstructions()));

        // Create a button to show the popup
        Button openButton = new Button(constants.cwBasicPopupShowButton(), new ClickHandler() {
            public void onClick(ClickEvent event) {
                // Reposition the popup relative to the button
                Widget source = (Widget) event.getSource();
                int left = source.getAbsoluteLeft() + 10;
                int top = source.getAbsoluteTop() + 10;
                simplePopup.setPopupPosition(left, top);

                // Show the popup
                simplePopup.show();
            }
        });

        // Create a popup to show the full size image
        Image jimmyFull = new Image(Showcase.images.jimmy());
        final PopupPanel imagePopup = new PopupPanel(true);
        imagePopup.setAnimationEnabled(true);
        imagePopup.ensureDebugId("cwBasicPopup-imagePopup");
        imagePopup.setWidget(jimmyFull);
        jimmyFull.addClickHandler(new ClickHandler() {
            public void onClick(ClickEvent event) {
                imagePopup.hide();
            }
        });

        // Add an image thumbnail
        Image jimmyThumb = new Image(Showcase.images.jimmyThumb());
        jimmyThumb.ensureDebugId("cwBasicPopup-thumb");
        jimmyThumb.addStyleName("cw-BasicPopup-thumb");
        jimmyThumb.addClickHandler(new ClickHandler() {
            public void onClick(ClickEvent event) {
                imagePopup.center();
            }
        });

        // Add the widgets to a panel
        VerticalPanel vPanel = new VerticalPanel();
        vPanel.setSpacing(5);
        vPanel.add(openButton);
        vPanel.add(new HTML("<br><br><br>" + constants.cwBasicPopupInstructions()));
        vPanel.add(jimmyThumb);

        // Return the panel
        return vPanel;
    }

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

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

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