code.grnet.gr Git - pithos-web-client/blob - src/gr/grnet/pithos/web/client/commands/ViewImageCommand.java

   1 /*
   2  * Copyright 2011 GRNET S.A. All rights reserved.
   3  *
   4  * Redistribution and use in source and binary forms, with or
   5  * without modification, are permitted provided that the following
   6  * conditions are met:
   7  *
   8  *   1. Redistributions of source code must retain the above
   9  *      copyright notice, this list of conditions and the following
  10  *      disclaimer.
  11  *
  12  *   2. Redistributions in binary form must reproduce the above
  13  *      copyright notice, this list of conditions and the following
  14  *      disclaimer in the documentation and/or other materials
  15  *      provided with the distribution.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY GRNET S.A. ``AS IS'' AND ANY EXPRESS
  18  * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  19  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  20  * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GRNET S.A OR
  21  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  22  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  23  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
  24  * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
  25  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  26  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
  27  * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  28  * POSSIBILITY OF SUCH DAMAGE.
  29  *
  30  * The views and conclusions contained in the software and
  31  * documentation are those of the authors and should not be
  32  * interpreted as representing official policies, either expressed
  33  * or implied, of GRNET S.A.
  34  */
  35 package gr.grnet.pithos.web.client.commands;
  36
  37 import gr.grnet.pithos.web.client.FileMenu;
  38
  39 import com.google.gwt.event.dom.client.ClickEvent;
  40 import com.google.gwt.event.dom.client.ClickHandler;
  41 import com.google.gwt.event.dom.client.ErrorEvent;
  42 import com.google.gwt.event.dom.client.ErrorHandler;
  43 import com.google.gwt.event.dom.client.LoadEvent;
  44 import com.google.gwt.event.dom.client.LoadHandler;
  45 import com.google.gwt.user.client.Command;
  46 import com.google.gwt.user.client.ui.DialogBox;
  47 import com.google.gwt.user.client.ui.Image;
  48 import com.google.gwt.user.client.ui.Label;
  49 import com.google.gwt.user.client.ui.PopupPanel;
  50 import com.google.gwt.user.client.ui.VerticalPanel;
  51
  52
  53 public class ViewImageCommand implements Command {
  54
  55         final FileMenu.Images newImages;
  56
  57         private PopupPanel containerPanel;
  58
  59         private String imageDownloadURL;
  60
  61         private Label errorLabel = new Label();
  62
  63         /**
  64          * @param _containerPanel
  65          * @param _newImages the images of all the possible delete dialogs
  66          */
  67         public ViewImageCommand(PopupPanel _containerPanel, final FileMenu.Images _newImages, String _imageDownloadURL) {
  68                 containerPanel = _containerPanel;
  69                 newImages = _newImages;
  70                 imageDownloadURL = _imageDownloadURL;
  71         }
  72
  73         @Override
  74         public void execute() {
  75                 containerPanel.hide();
  76
  77                 final Image image = new Image();
  78                 // Hook up a load handler, so that we can be informed if the image
  79                 // fails to load.
  80             image.addLoadHandler(new LoadHandler() {
  81
  82                         @Override
  83                         public void onLoad(LoadEvent event) {
  84                                 errorLabel.setText("");
  85                         }
  86                 });
  87                 image.addErrorHandler(new ErrorHandler() {
  88
  89                         @Override
  90                         public void onError(ErrorEvent event) {
  91                                 errorLabel.setText("An error occurred while loading.");
  92                         }
  93                 });
  94             image.setUrl(imageDownloadURL);
  95             final DialogBox imagePopup = new DialogBox(true, true);
  96             imagePopup.setAnimationEnabled(true);
  97             imagePopup.setText("Showing image in actual size");
  98             VerticalPanel imageViewPanel = new VerticalPanel();
  99             errorLabel.setText("loading image...");
 100             imageViewPanel.add(errorLabel);
 101             imageViewPanel.add(image);
 102             imagePopup.setWidget(imageViewPanel);
 103             image.setTitle("Click to close");
 104             image.addClickHandler(new ClickHandler() {
 105
 106                         @Override
 107                         public void onClick(ClickEvent event) {
 108                         imagePopup.hide();
 109                 }
 110             });
 111             imagePopup.setPopupPosition(0, 0);
 112             imagePopup.show();
 113         }
 114 }