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.user.client.DeferredCommand;\r
  32 import com.google.gwt.user.client.ui.Button;\r
  33 import com.google.gwt.user.client.ui.ClickListener;\r
  34 import com.google.gwt.user.client.ui.DialogBox;\r
  35 import com.google.gwt.user.client.ui.HTML;\r
  36 import com.google.gwt.user.client.ui.HasHorizontalAlignment;\r
  37 import com.google.gwt.user.client.ui.HorizontalPanel;\r
  38 import com.google.gwt.user.client.ui.KeyboardListener;\r
  39 import com.google.gwt.user.client.ui.VerticalPanel;\r
  40 import com.google.gwt.user.client.ui.Widget;\r
  41 \r
  42 /**\r
  43  * The 'delete file' dialog box.\r
  44  */\r
  45 public class DeleteFileDialog extends DialogBox {\r
  46 \r
  47         /**\r
  48          * The widget's constructor.\r
  49          *\r
  50          * @param images the supplied images\r
  51          */\r
  52         public DeleteFileDialog(Images images) {\r
  53                 // Set the dialog's caption.\r
  54                 setText("Confirmation");\r
  55                 setAnimationEnabled(true);\r
  56                 Object selection = GSS.get().getCurrentSelection();\r
  57                 // Create a VerticalPanel to contain the label and the buttons.\r
  58                 VerticalPanel outer = new VerticalPanel();\r
  59                 HorizontalPanel buttons = new HorizontalPanel();\r
  60 \r
  61                 HTML text;\r
  62                 if (selection instanceof FileResource)\r
  63                         text = new HTML("<table><tr><td>" + images.warn().getHTML() + "</td><td>" + "Are you sure you want to <b>permanently</b> delete file '" + ((FileResource) selection).getName() + "'?</td></tr></table>");\r
  64                 else\r
  65                         text = new HTML("<table><tr><td>" + images.warn().getHTML() + "</td><td>" + "Are you sure you want to <b>permanently</b> delete the selected files?</td></tr></table>");\r
  66                 text.setStyleName("gss-warnMessage");\r
  67                 outer.add(text);\r
  68 \r
  69                 // Create the 'Delete' button, along with a listener that hides the dialog\r
  70                 // when the button is clicked and deletes the file.\r
  71                 Button ok = new Button("Delete", new ClickListener() {\r
  72 \r
  73                         public void onClick(Widget sender) {\r
  74                                 deleteFile();\r
  75                                 hide();\r
  76                         }\r
  77                 });\r
  78                 buttons.add(ok);\r
  79                 buttons.setCellHorizontalAlignment(ok, HasHorizontalAlignment.ALIGN_CENTER);\r
  80                 // Create the 'Cancel' button, along with a listener that hides the\r
  81                 // dialog when the button is clicked.\r
  82                 Button cancel = new Button("Cancel", new ClickListener() {\r
  83 \r
  84                         public void onClick(Widget sender) {\r
  85                                 hide();\r
  86                         }\r
  87                 });\r
  88                 buttons.add(cancel);\r
  89                 buttons.setCellHorizontalAlignment(cancel, HasHorizontalAlignment.ALIGN_CENTER);\r
  90                 buttons.setSpacing(8);\r
  91                 buttons.setStyleName("gss-warnMessage");\r
  92                 outer.setStyleName("gss-warnMessage");\r
  93                 outer.add(buttons);\r
  94                 outer.setCellHorizontalAlignment(text, HasHorizontalAlignment.ALIGN_CENTER);\r
  95                 outer.setCellHorizontalAlignment(buttons, HasHorizontalAlignment.ALIGN_CENTER);\r
  96                 setWidget(outer);\r
  97         }\r
  98 \r
  99         /**\r
 100          * Generate an RPC request to delete a file.\r
 101          *\r
 102          * @param userId the ID of the current user\r
 103          */\r
 104         private void deleteFile() {\r
 105                 Object selection = GSS.get().getCurrentSelection();\r
 106                 if (selection == null) {\r
 107                         GSS.get().displayError("No file was selected");\r
 108                         return;\r
 109                 }\r
 110                 if (selection instanceof FileResource) {\r
 111                         FileResource file = (FileResource) selection;\r
 112 \r
 113                         DeleteCommand df = new DeleteCommand(file.getUri()){\r
 114 \r
 115                                 @Override\r
 116                                 public void onComplete() {\r
 117                                         GSS.get().getFileList().updateFileCache(true, true /*clear selection*/);\r
 118                                         GSS.get().getStatusPanel().updateStats();\r
 119                                 }\r
 120 \r
 121                                 @Override\r
 122                                 public void onError(Throwable t) {\r
 123                                         GWT.log("", t);\r
 124                                         if(t instanceof RestException){\r
 125                                                 int statusCode = ((RestException)t).getHttpStatusCode();\r
 126                                                 if(statusCode == 405)\r
 127                                                         GSS.get().displayError("You don't have the necessary permissions");\r
 128                                                 else if(statusCode == 404)\r
 129                                                         GSS.get().displayError("File not found");\r
 130                                                 else\r
 131                                                         GSS.get().displayError("Unable to delete file: "+((RestException)t).getHttpStatusText());\r
 132                                         }\r
 133                                         else\r
 134                                                 GSS.get().displayError("System error unable to delete file: "+t.getMessage());\r
 135                                 }\r
 136                         };\r
 137 \r
 138                         DeferredCommand.addCommand(df);\r
 139                 }\r
 140                 else if(selection instanceof List){\r
 141                         List<FileResource> files = (List<FileResource>) selection;\r
 142                         List<String> fileIds = new ArrayList<String>();\r
 143                         for(FileResource f : files)\r
 144                                 fileIds.add(f.getUri());\r
 145 \r
 146                         MultipleDeleteCommand ed = new MultipleDeleteCommand(fileIds.toArray(new String[0])){\r
 147 \r
 148                                 @Override\r
 149                                 public void onComplete() {\r
 150                                         GSS.get().showFileList(true);\r
 151                                 }\r
 152 \r
 153                                 @Override\r
 154                                 public void onError(Throwable t) {\r
 155                                         GWT.log("", t);\r
 156                                         GSS.get().showFileList(true);\r
 157                                 }\r
 158 \r
 159                                 @Override\r
 160                                 public void onError(String path, Throwable t) {\r
 161                                         GWT.log("", t);\r
 162                                         if(t instanceof RestException){\r
 163                                                 int statusCode = ((RestException)t).getHttpStatusCode();\r
 164                                                 if(statusCode == 405)\r
 165                                                         GSS.get().displayError("You don't have the necessary permissions");\r
 166                                                 else if(statusCode == 404)\r
 167                                                         GSS.get().displayError("File not found");\r
 168                                                 else\r
 169                                                         GSS.get().displayError("Unable to delete file:"+((RestException)t).getHttpStatusText());\r
 170                                         }\r
 171                                         else\r
 172                                                 GSS.get().displayError("System error unable to delete file:"+t.getMessage());\r
 173 \r
 174                                 }\r
 175                         };\r
 176 \r
 177                         DeferredCommand.addCommand(ed);\r
 178                 }\r
 179         }\r
 180 \r
 181         @Override\r
 182         public boolean onKeyDownPreview(final char key, final int modifiers) {\r
 183                 // Use the popup's key preview hooks to close the dialog when either\r
 184                 // enter or escape is pressed.\r
 185                 switch (key) {\r
 186                         case KeyboardListener.KEY_ENTER:\r
 187                                 hide();\r
 188                                 deleteFile();\r
 189                                 break;\r
 190                         case KeyboardListener.KEY_ESCAPE:\r
 191                                 hide();\r
 192                                 break;\r
 193                 }\r
 194 \r
 195                 return true;\r
 196         }\r
 197 \r
 198 }\r