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

   1 /*\r
   2  * Copyright 2011-2012 GRNET S.A. All rights reserved.\r
   3  *\r
   4  * Redistribution and use in source and binary forms, with or\r
   5  * without modification, are permitted provided that the following\r
   6  * conditions are met:\r
   7  *\r
   8  *   1. Redistributions of source code must retain the above\r
   9  *      copyright notice, this list of conditions and the following\r
  10  *      disclaimer.\r
  11  *\r
  12  *   2. Redistributions in binary form must reproduce the above\r
  13  *      copyright notice, this list of conditions and the following\r
  14  *      disclaimer in the documentation and/or other materials\r
  15  *      provided with the distribution.\r
  16  *\r
  17  * THIS SOFTWARE IS PROVIDED BY GRNET S.A. ``AS IS'' AND ANY EXPRESS\r
  18  * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED\r
  19  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR\r
  20  * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GRNET S.A OR\r
  21  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,\r
  22  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT\r
  23  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF\r
  24  * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED\r
  25  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT\r
  26  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN\r
  27  * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE\r
  28  * POSSIBILITY OF SUCH DAMAGE.\r
  29  *\r
  30  * The views and conclusions contained in the software and\r
  31  * documentation are those of the authors and should not be\r
  32  * interpreted as representing official policies, either expressed\r
  33  * or implied, of GRNET S.A.\r
  34  */\r
  35 package gr.grnet.pithos.web.client;\r
  36 \r
  37 import gr.grnet.pithos.web.client.MessagePanel.Images;\r
  38 import gr.grnet.pithos.web.client.foldertree.File;\r
  39 import gr.grnet.pithos.web.client.foldertree.Folder;\r
  40 import gr.grnet.pithos.web.client.foldertree.Resource;\r
  41 import gr.grnet.pithos.web.client.rest.DeleteRequest;\r
  42 import gr.grnet.pithos.web.client.rest.RestException;\r
  43 \r
  44 import java.util.Iterator;\r
  45 import java.util.List;\r
  46 \r
  47 import com.google.gwt.core.client.GWT;\r
  48 import com.google.gwt.core.client.Scheduler;\r
  49 import com.google.gwt.dom.client.NativeEvent;\r
  50 import com.google.gwt.event.dom.client.ClickEvent;\r
  51 import com.google.gwt.event.dom.client.ClickHandler;\r
  52 import com.google.gwt.event.dom.client.KeyCodes;\r
  53 import com.google.gwt.http.client.Response;\r
  54 import com.google.gwt.http.client.URL;\r
  55 import com.google.gwt.user.client.Command;\r
  56 import com.google.gwt.user.client.Event.NativePreviewEvent;\r
  57 import com.google.gwt.user.client.ui.AbstractImagePrototype;\r
  58 import com.google.gwt.user.client.ui.Anchor;\r
  59 import com.google.gwt.user.client.ui.Button;\r
  60 import com.google.gwt.user.client.ui.DialogBox;\r
  61 import com.google.gwt.user.client.ui.HTML;\r
  62 import com.google.gwt.user.client.ui.HasHorizontalAlignment;\r
  63 import com.google.gwt.user.client.ui.VerticalPanel;\r
  64 \r
  65 /**\r
  66  * The 'delete file' dialog box.\r
  67  */\r
  68 public class DeleteFileDialog extends DialogBox {\r
  69 \r
  70     private List<File> files;\r
  71 \r
  72     protected Pithos app;\r
  73 \r
  74         /**\r
  75          * The widget's constructor.\r
  76          *\r
  77          * @param images the supplied images\r
  78          */\r
  79         public DeleteFileDialog(Pithos _app, Images images, List<File> _files) {\r
  80         app = _app;\r
  81         files = _files;\r
  82                 Anchor close = new Anchor("close");\r
  83                 close.addStyleName("close");\r
  84                 close.addClickHandler(new ClickHandler() {\r
  85                         \r
  86                         @Override\r
  87                         public void onClick(ClickEvent event) {\r
  88                                 hide();\r
  89                         }\r
  90                 });\r
  91                 // Set the dialog's caption.\r
  92                 setText("Confirmation");\r
  93                 setAnimationEnabled(true);\r
  94                 setGlassEnabled(true);\r
  95                 setStyleName("pithos-DialogBox");\r
  96                 // Create a VerticalPanel to contain the label and the buttons.\r
  97                 VerticalPanel outer = new VerticalPanel();\r
  98                 outer.add(close);\r
  99                 \r
 100                 VerticalPanel inner = new VerticalPanel();\r
 101                 inner.addStyleName("inner");\r
 102 \r
 103                 HTML text;\r
 104                 if (files.size() == 1)\r
 105                         text = new HTML("<table><tr><td>" + AbstractImagePrototype.create(images.warn()).getHTML() + "</td><td>" + "Are you sure you want to <b>permanently</b> delete file '" + files.get(0).getName() + "'?</td></tr></table>");\r
 106                 else\r
 107                         text = new HTML("<table><tr><td>" + AbstractImagePrototype.create(images.warn()).getHTML() + "</td><td>" + "Are you sure you want to <b>permanently</b> delete the selected files?</td></tr></table>");\r
 108                 text.setStyleName("pithos-warnMessage");\r
 109                 inner.add(text);\r
 110 \r
 111                 // Create the 'Delete' button, along with a listener that hides the dialog\r
 112                 // when the button is clicked and deletes the file.\r
 113                 Button ok = new Button("Delete", new ClickHandler() {\r
 114                         @Override\r
 115                         public void onClick(ClickEvent event) {\r
 116                                 deleteFiles();\r
 117                                 hide();\r
 118                         }\r
 119                 });\r
 120                 ok.addStyleName("button");\r
 121                 inner.add(ok);\r
 122                 inner.setCellHorizontalAlignment(text, HasHorizontalAlignment.ALIGN_CENTER);\r
 123                 outer.add(inner);\r
 124                 outer.setCellHorizontalAlignment(inner, HasHorizontalAlignment.ALIGN_CENTER);\r
 125                 setWidget(outer);\r
 126         }\r
 127 \r
 128         /**\r
 129          * Generate an RPC request to delete a file.\r
 130          */\r
 131         protected void deleteFiles() {\r
 132         Iterator<File> iter = files.iterator();\r
 133         deleteFile(iter);\r
 134     }\r
 135 \r
 136         protected void deleteFile(final Iterator<File> iter) {\r
 137         if (iter.hasNext()) {\r
 138             File f = iter.next();\r
 139             String path = f.getUri();\r
 140             DeleteRequest deleteFile = new DeleteRequest(app.getApiPath(), f.getOwner(), URL.encode(path)) {\r
 141                 @Override\r
 142                 public void onSuccess(Resource result) {\r
 143                     deleteFile(iter);\r
 144                 }\r
 145 \r
 146                 @Override\r
 147                 public void onError(Throwable t) {\r
 148                     GWT.log("", t);\r
 149                                         app.setError(t);\r
 150                     if (t instanceof RestException) {\r
 151                         app.displayError("Unable to delete file: " + ((RestException) t).getHttpStatusText());\r
 152                     }\r
 153                     else\r
 154                         app.displayError("System error unable to delete file: "+t.getMessage());\r
 155                 }\r
 156 \r
 157                                 @Override\r
 158                                 protected void onUnauthorized(Response response) {\r
 159                                         app.sessionExpired();\r
 160                                 }\r
 161             };\r
 162             deleteFile.setHeader("X-Auth-Token", app.getToken());\r
 163             Scheduler.get().scheduleDeferred(deleteFile);\r
 164         }\r
 165         else {\r
 166                 Folder f = files.get(0).getParent();\r
 167                 if (app.isMySharedSelected())\r
 168                         app.updateSharedFolder(f, true, new Command() {\r
 169                                         \r
 170                                         @Override\r
 171                                         public void execute() {\r
 172                                                 app.updateStatistics();\r
 173                                         }\r
 174                                 });\r
 175                 else\r
 176                     app.updateFolder(files.get(0).getParent(), true, new Command() {\r
 177                                         \r
 178                                         @Override\r
 179                                         public void execute() {\r
 180                                                 app.updateStatistics();\r
 181                                         }\r
 182                                 }, true);\r
 183         }\r
 184     }\r
 185 \r
 186         @Override\r
 187         protected void onPreviewNativeEvent(NativePreviewEvent preview) {\r
 188                 super.onPreviewNativeEvent(preview);\r
 189 \r
 190                 NativeEvent evt = preview.getNativeEvent();\r
 191                 if (evt.getType().equals("keydown"))\r
 192                         // Use the popup's key preview hooks to close the dialog when either\r
 193                         // enter or escape is pressed.\r
 194                         switch (evt.getKeyCode()) {\r
 195                                 case KeyCodes.KEY_ENTER:\r
 196                                         hide();\r
 197                                         deleteFiles();\r
 198                                         break;\r
 199                                 case KeyCodes.KEY_ESCAPE:\r
 200                                         hide();\r
 201                                         break;\r
 202                         }\r
 203         }\r
 204 \r
 205 \r
 206 \r
 207 }\r