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.Resource;\r
  40 import gr.grnet.pithos.web.client.rest.DeleteRequest;\r
  41 import gr.grnet.pithos.web.client.rest.RestException;\r
  42 \r
  43 import java.util.Iterator;\r
  44 import java.util.List;\r
  45 \r
  46 import com.google.gwt.core.client.GWT;\r
  47 import com.google.gwt.core.client.Scheduler;\r
  48 import com.google.gwt.dom.client.NativeEvent;\r
  49 import com.google.gwt.event.dom.client.ClickEvent;\r
  50 import com.google.gwt.event.dom.client.ClickHandler;\r
  51 import com.google.gwt.event.dom.client.KeyCodes;\r
  52 import com.google.gwt.http.client.Response;\r
  53 import com.google.gwt.http.client.URL;\r
  54 import com.google.gwt.user.client.Command;\r
  55 import com.google.gwt.user.client.Event.NativePreviewEvent;\r
  56 import com.google.gwt.user.client.ui.AbstractImagePrototype;\r
  57 import com.google.gwt.user.client.ui.Anchor;\r
  58 import com.google.gwt.user.client.ui.Button;\r
  59 import com.google.gwt.user.client.ui.DialogBox;\r
  60 import com.google.gwt.user.client.ui.HTML;\r
  61 import com.google.gwt.user.client.ui.HasHorizontalAlignment;\r
  62 import com.google.gwt.user.client.ui.VerticalPanel;\r
  63 \r
  64 /**\r
  65  * The 'delete file' dialog box.\r
  66  */\r
  67 public class DeleteFileDialog extends DialogBox {\r
  68 \r
  69     private List<File> files;\r
  70 \r
  71     protected Pithos app;\r
  72 \r
  73         /**\r
  74          * The widget's constructor.\r
  75          *\r
  76          * @param images the supplied images\r
  77          */\r
  78         public DeleteFileDialog(Pithos _app, Images images, List<File> _files) {\r
  79         app = _app;\r
  80         files = _files;\r
  81                 Anchor close = new Anchor();\r
  82                 close.addStyleName("close");\r
  83                 close.addClickHandler(new ClickHandler() {\r
  84                         \r
  85                         @Override\r
  86                         public void onClick(ClickEvent event) {\r
  87                                 hide();\r
  88                         }\r
  89                 });\r
  90                 // Set the dialog's caption.\r
  91                 setText("Confirmation");\r
  92                 setAnimationEnabled(true);\r
  93                 setGlassEnabled(true);\r
  94                 setStyleName("pithos-DialogBox");\r
  95                 // Create a VerticalPanel to contain the label and the buttons.\r
  96                 VerticalPanel outer = new VerticalPanel();\r
  97                 outer.add(close);\r
  98                 \r
  99                 VerticalPanel inner = new VerticalPanel();\r
 100                 inner.addStyleName("inner");\r
 101 \r
 102                 HTML text;\r
 103                 if (files.size() == 1)\r
 104                         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
 105                 else\r
 106                         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
 107                 text.setStyleName("pithos-warnMessage");\r
 108                 inner.add(text);\r
 109 \r
 110                 // Create the 'Delete' button, along with a listener that hides the dialog\r
 111                 // when the button is clicked and deletes the file.\r
 112                 Button ok = new Button("Delete", new ClickHandler() {\r
 113                         @Override\r
 114                         public void onClick(ClickEvent event) {\r
 115                                 deleteFiles();\r
 116                                 hide();\r
 117                         }\r
 118                 });\r
 119                 ok.addStyleName("button");\r
 120                 inner.add(ok);\r
 121                 inner.setCellHorizontalAlignment(text, HasHorizontalAlignment.ALIGN_CENTER);\r
 122                 outer.add(inner);\r
 123                 outer.setCellHorizontalAlignment(inner, HasHorizontalAlignment.ALIGN_CENTER);\r
 124                 setWidget(outer);\r
 125         }\r
 126 \r
 127         /**\r
 128          * Generate an RPC request to delete a file.\r
 129          */\r
 130         protected void deleteFiles() {\r
 131         Iterator<File> iter = files.iterator();\r
 132         deleteFile(iter);\r
 133     }\r
 134 \r
 135         protected void deleteFile(final Iterator<File> iter) {\r
 136         if (iter.hasNext()) {\r
 137             File f = iter.next();\r
 138             String path = f.getUri();\r
 139             DeleteRequest deleteFile = new DeleteRequest(app.getApiPath(), f.getOwner(), URL.encode(path)) {\r
 140                 @Override\r
 141                 public void onSuccess(Resource result) {\r
 142                     deleteFile(iter);\r
 143                 }\r
 144 \r
 145                 @Override\r
 146                 public void onError(Throwable t) {\r
 147                     GWT.log("", t);\r
 148                                         app.setError(t);\r
 149                     if (t instanceof RestException) {\r
 150                         app.displayError("Unable to delete file: " + ((RestException) t).getHttpStatusText());\r
 151                     }\r
 152                     else\r
 153                         app.displayError("System error unable to delete file: "+t.getMessage());\r
 154                 }\r
 155 \r
 156                                 @Override\r
 157                                 protected void onUnauthorized(Response response) {\r
 158                                         app.sessionExpired();\r
 159                                 }\r
 160             };\r
 161             deleteFile.setHeader("X-Auth-Token", app.getToken());\r
 162             Scheduler.get().scheduleDeferred(deleteFile);\r
 163         }\r
 164         else {\r
 165             app.updateFolder(files.get(0).getParent(), true, new Command() {\r
 166                                 \r
 167                                 @Override\r
 168                                 public void execute() {\r
 169                                         app.updateStatistics();\r
 170                                 }\r
 171                         }, true);\r
 172         }\r
 173     }\r
 174 \r
 175         @Override\r
 176         protected void onPreviewNativeEvent(NativePreviewEvent preview) {\r
 177                 super.onPreviewNativeEvent(preview);\r
 178 \r
 179                 NativeEvent evt = preview.getNativeEvent();\r
 180                 if (evt.getType().equals("keydown"))\r
 181                         // Use the popup's key preview hooks to close the dialog when either\r
 182                         // enter or escape is pressed.\r
 183                         switch (evt.getKeyCode()) {\r
 184                                 case KeyCodes.KEY_ENTER:\r
 185                                         hide();\r
 186                                         deleteFiles();\r
 187                                         break;\r
 188                                 case KeyCodes.KEY_ESCAPE:\r
 189                                         hide();\r
 190                                         break;\r
 191                         }\r
 192         }\r
 193 \r
 194 \r
 195 \r
 196 }\r