Synnefo

/*

 * Copyright 2011 GRNET S.A. All rights reserved.

 *

 * Redistribution and use in source and binary forms, with or

 * without modification, are permitted provided that the following

 * conditions are met:

 *

 *   1. Redistributions of source code must retain the above

 *      copyright notice, this list of conditions and the following

 *      disclaimer.

 *

 *   2. Redistributions in binary form must reproduce the above

 *      copyright notice, this list of conditions and the following

 *      disclaimer in the documentation and/or other materials

 *      provided with the distribution.

 *

 * THIS SOFTWARE IS PROVIDED BY GRNET S.A. ``AS IS'' AND ANY EXPRESS

 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED

 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR

 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GRNET S.A OR

 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,

 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT

 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF

 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED

 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT

 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN

 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE

 * POSSIBILITY OF SUCH DAMAGE.

 *

 * The views and conclusions contained in the software and

 * documentation are those of the authors and should not be

 * interpreted as representing official policies, either expressed

 * or implied, of GRNET S.A.

 */

package gr.grnet.pithos.web.client.commands;

import gr.grnet.pithos.web.client.FileMenu;

import com.google.gwt.event.dom.client.ClickEvent;

import com.google.gwt.event.dom.client.ClickHandler;

import com.google.gwt.event.dom.client.ErrorEvent;

import com.google.gwt.event.dom.client.ErrorHandler;

import com.google.gwt.event.dom.client.LoadEvent;

import com.google.gwt.event.dom.client.LoadHandler;

import com.google.gwt.user.client.Command;

import com.google.gwt.user.client.ui.DialogBox;

import com.google.gwt.user.client.ui.Image;

import com.google.gwt.user.client.ui.Label;

import com.google.gwt.user.client.ui.PopupPanel;

import com.google.gwt.user.client.ui.VerticalPanel;

public class ViewImageCommand implements Command {

        final FileMenu.Images newImages;

        private PopupPanel containerPanel;

        private String imageDownloadURL;

        private Label errorLabel = new Label();

        /**

         * @param _containerPanel

         * @param _newImages the images of all the possible delete dialogs

         */

        public ViewImageCommand(PopupPanel _containerPanel, final FileMenu.Images _newImages, String _imageDownloadURL) {

                containerPanel = _containerPanel;

                newImages = _newImages;

                imageDownloadURL = _imageDownloadURL;

        }

        @Override

        public void execute() {

                containerPanel.hide();

                final Image image = new Image();

                // Hook up a load handler, so that we can be informed if the image

                // fails to load.

            image.addLoadHandler(new LoadHandler() {

                        @Override

                        public void onLoad(LoadEvent event) {

                                errorLabel.setText("");

                        }

                });

                image.addErrorHandler(new ErrorHandler() {

                        @Override

                        public void onError(ErrorEvent event) {

                                errorLabel.setText("An error occurred while loading.");

                        }

                });

            image.setUrl(imageDownloadURL);

            final DialogBox imagePopup = new DialogBox(true, true);

            imagePopup.setAnimationEnabled(true);

            imagePopup.setText("Showing image in actual size");

            VerticalPanel imageViewPanel = new VerticalPanel();

            errorLabel.setText("loading image...");

            imageViewPanel.add(errorLabel);

            imageViewPanel.add(image);

            imagePopup.setWidget(imageViewPanel);

            image.setTitle("Click to close");

            image.addClickHandler(new ClickHandler() {

                        @Override

                        public void onClick(ClickEvent event) {

                            imagePopup.hide();

                    }

            });

            imagePopup.setPopupPosition(0, 0);

            imagePopup.show();

        }

}