Synnefo » Pithos

/*

 * Copyright 2009 Electronic Business Systems Ltd.

 *

 * This file is part of GSS.

 *

 * GSS is free software: you can redistribute it and/or modify

 * it under the terms of the GNU General Public License as published by

 * the Free Software Foundation, either version 3 of the License, or

 * (at your option) any later version.

 *

 * GSS is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 * GNU General Public License for more details.

 *

 * You should have received a copy of the GNU General Public License

 * along with GSS.  If not, see <http://www.gnu.org/licenses/>.

 */

package gr.ebs.gss.client.commands;

import gr.ebs.gss.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();

	}

}