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

   1 /*\r
   2  * Copyright 2007, 2008, 2009 Electronic Business Systems Ltd.\r
   3  *\r
   4  * This file is part of GSS.\r
   5  *\r
   6  * GSS is free software: you can redistribute it and/or modify\r
   7  * it under the terms of the GNU General Public License as published by\r
   8  * the Free Software Foundation, either version 3 of the License, or\r
   9  * (at your option) any later version.\r
  10  *\r
  11  * GSS is distributed in the hope that it will be useful,\r
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of\r
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\r
  14  * GNU General Public License for more details.\r
  15  *\r
  16  * You should have received a copy of the GNU General Public License\r
  17  * along with GSS.  If not, see <http://www.gnu.org/licenses/>.\r
  18  */\r
  19 package gr.ebs.gss.client;\r
  20 \r
  21 import gr.ebs.gss.client.MessagePanel.Images;\r
  22 import gr.ebs.gss.client.rest.DeleteCommand;\r
  23 import gr.ebs.gss.client.rest.MultipleDeleteCommand;\r
  24 import gr.ebs.gss.client.rest.RestException;\r
  25 import gr.ebs.gss.client.rest.resource.FileResource;\r
  26 \r
  27 import java.util.ArrayList;\r
  28 import java.util.List;\r
  29 \r
  30 import com.google.gwt.core.client.GWT;\r
  31 import com.google.gwt.dom.client.NativeEvent;\r
  32 import com.google.gwt.event.dom.client.ClickEvent;\r
  33 import com.google.gwt.event.dom.client.ClickHandler;\r
  34 import com.google.gwt.event.dom.client.KeyCodes;\r
  35 import com.google.gwt.user.client.DeferredCommand;\r
  36 import com.google.gwt.user.client.Event.NativePreviewEvent;\r
  37 import com.google.gwt.user.client.ui.AbstractImagePrototype;\r
  38 import com.google.gwt.user.client.ui.Button;\r
  39 import com.google.gwt.user.client.ui.DialogBox;\r
  40 import com.google.gwt.user.client.ui.HTML;\r
  41 import com.google.gwt.user.client.ui.HasHorizontalAlignment;\r
  42 import com.google.gwt.user.client.ui.HorizontalPanel;\r
  43 import com.google.gwt.user.client.ui.VerticalPanel;\r
  44 \r
  45 /**\r
  46  * The 'delete file' dialog box.\r
  47  */\r
  48 public class DeleteFileDialog extends DialogBox {\r
  49 \r
  50         /**\r
  51          * The widget's constructor.\r
  52          *\r
  53          * @param images the supplied images\r
  54          */\r
  55         public DeleteFileDialog(Images images) {\r
  56                 // Set the dialog's caption.\r
  57                 setText("Confirmation");\r
  58                 setAnimationEnabled(true);\r
  59                 Object selection = GSS.get().getCurrentSelection();\r
  60                 // Create a VerticalPanel to contain the label and the buttons.\r
  61                 VerticalPanel outer = new VerticalPanel();\r
  62                 HorizontalPanel buttons = new HorizontalPanel();\r
  63 \r
  64                 HTML text;\r
  65                 if (selection instanceof FileResource)\r
  66                         text = new HTML("<table><tr><td>" + AbstractImagePrototype.create(images.warn()).getHTML() + "</td><td>" + "Are you sure you want to <b>permanently</b> delete file '" + ((FileResource) selection).getName() + "'?</td></tr></table>");\r
  67                 else\r
  68                         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
  69                 text.setStyleName("gss-warnMessage");\r
  70                 outer.add(text);\r
  71 \r
  72                 // Create the 'Delete' button, along with a listener that hides the dialog\r
  73                 // when the button is clicked and deletes the file.\r
  74                 Button ok = new Button("Delete", new ClickHandler() {\r
  75                         @Override\r
  76                         public void onClick(ClickEvent event) {\r
  77                                 deleteFile();\r
  78                                 hide();\r
  79                         }\r
  80                 });\r
  81                 buttons.add(ok);\r
  82                 buttons.setCellHorizontalAlignment(ok, HasHorizontalAlignment.ALIGN_CENTER);\r
  83                 // Create the 'Cancel' button, along with a listener that hides the\r
  84                 // dialog when the button is clicked.\r
  85                 Button cancel = new Button("Cancel", new ClickHandler() {\r
  86                         @Override\r
  87                         public void onClick(ClickEvent event) {\r
  88                                 hide();\r
  89                         }\r
  90                 });\r
  91                 buttons.add(cancel);\r
  92                 buttons.setCellHorizontalAlignment(cancel, HasHorizontalAlignment.ALIGN_CENTER);\r
  93                 buttons.setSpacing(8);\r
  94                 buttons.setStyleName("gss-warnMessage");\r
  95                 outer.setStyleName("gss-warnMessage");\r
  96                 outer.add(buttons);\r
  97                 outer.setCellHorizontalAlignment(text, HasHorizontalAlignment.ALIGN_CENTER);\r
  98                 outer.setCellHorizontalAlignment(buttons, HasHorizontalAlignment.ALIGN_CENTER);\r
  99                 setWidget(outer);\r
 100         }\r
 101 \r
 102         /**\r
 103          * Generate an RPC request to delete a file.\r
 104          *\r
 105          * @param userId the ID of the current user\r
 106          */\r
 107         private void deleteFile() {\r
 108                 Object selection = GSS.get().getCurrentSelection();\r
 109                 if (selection == null) {\r
 110                         GSS.get().displayError("No file was selected");\r
 111                         return;\r
 112                 }\r
 113                 if (selection instanceof FileResource) {\r
 114                         FileResource file = (FileResource) selection;\r
 115 \r
 116                         DeleteCommand df = new DeleteCommand(file.getUri()){\r
 117 \r
 118                                 @Override\r
 119                                 public void onComplete() {\r
 120                                         GSS.get().getFileList().updateFileCache(true, true /*clear selection*/);\r
 121                                         GSS.get().getStatusPanel().updateStats();\r
 122                                 }\r
 123 \r
 124                                 @Override\r
 125                                 public void onError(Throwable t) {\r
 126                                         GWT.log("", t);\r
 127                                         if(t instanceof RestException){\r
 128                                                 int statusCode = ((RestException)t).getHttpStatusCode();\r
 129                                                 if(statusCode == 405)\r
 130                                                         GSS.get().displayError("You don't have the necessary permissions");\r
 131                                                 else if(statusCode == 404)\r
 132                                                         GSS.get().displayError("File not found");\r
 133                                                 else\r
 134                                                         GSS.get().displayError("Unable to delete file: "+((RestException)t).getHttpStatusText());\r
 135                                         }\r
 136                                         else\r
 137                                                 GSS.get().displayError("System error unable to delete file: "+t.getMessage());\r
 138                                 }\r
 139                         };\r
 140 \r
 141                         DeferredCommand.addCommand(df);\r
 142                 }\r
 143                 else if(selection instanceof List){\r
 144                         List<FileResource> files = (List<FileResource>) selection;\r
 145                         List<String> fileIds = new ArrayList<String>();\r
 146                         for(FileResource f : files)\r
 147                                 fileIds.add(f.getUri());\r
 148 \r
 149                         MultipleDeleteCommand ed = new MultipleDeleteCommand(fileIds.toArray(new String[0])){\r
 150 \r
 151                                 @Override\r
 152                                 public void onComplete() {\r
 153                                         GSS.get().showFileList(true);\r
 154                                 }\r
 155 \r
 156                                 @Override\r
 157                                 public void onError(Throwable t) {\r
 158                                         GWT.log("", t);\r
 159                                         GSS.get().showFileList(true);\r
 160                                 }\r
 161 \r
 162                                 @Override\r
 163                                 public void onError(String path, Throwable t) {\r
 164                                         GWT.log("", t);\r
 165                                         if(t instanceof RestException){\r
 166                                                 int statusCode = ((RestException)t).getHttpStatusCode();\r
 167                                                 if(statusCode == 405)\r
 168                                                         GSS.get().displayError("You don't have the necessary permissions");\r
 169                                                 else if(statusCode == 404)\r
 170                                                         GSS.get().displayError("File not found");\r
 171                                                 else\r
 172                                                         GSS.get().displayError("Unable to delete file:"+((RestException)t).getHttpStatusText());\r
 173                                         }\r
 174                                         else\r
 175                                                 GSS.get().displayError("System error unable to delete file:"+t.getMessage());\r
 176 \r
 177                                 }\r
 178                         };\r
 179 \r
 180                         DeferredCommand.addCommand(ed);\r
 181                 }\r
 182         }\r
 183 \r
 184         @Override\r
 185         protected void onPreviewNativeEvent(NativePreviewEvent preview) {\r
 186                 super.onPreviewNativeEvent(preview);\r
 187 \r
 188                 NativeEvent evt = preview.getNativeEvent();\r
 189                 if (evt.getType().equals("keydown"))\r
 190                         // Use the popup's key preview hooks to close the dialog when either\r
 191                         // enter or escape is pressed.\r
 192                         switch (evt.getKeyCode()) {\r
 193                                 case KeyCodes.KEY_ENTER:\r
 194                                         hide();\r
 195                                         deleteFile();\r
 196                                         break;\r
 197                                 case KeyCodes.KEY_ESCAPE:\r
 198                                         hide();\r
 199                                         break;\r
 200                         }\r
 201         }\r
 202 \r
 203 \r
 204 \r
 205 }\r