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

   1 /*\r
   2  *  Copyright (c) 2011 Greek Research and Technology Network\r
   3  */\r
   4 package gr.grnet.pithos.web.client;\r
   5 \r
   6 import gr.grnet.pithos.web.client.MessagePanel.Images;\r
   7 import gr.grnet.pithos.web.client.rest.DeleteCommand;\r
   8 import gr.grnet.pithos.web.client.rest.MultipleDeleteCommand;\r
   9 import gr.grnet.pithos.web.client.rest.RestException;\r
  10 import gr.grnet.pithos.web.client.rest.resource.FileResource;\r
  11 \r
  12 import java.util.ArrayList;\r
  13 import java.util.List;\r
  14 \r
  15 import com.google.gwt.core.client.GWT;\r
  16 import com.google.gwt.dom.client.NativeEvent;\r
  17 import com.google.gwt.event.dom.client.ClickEvent;\r
  18 import com.google.gwt.event.dom.client.ClickHandler;\r
  19 import com.google.gwt.event.dom.client.KeyCodes;\r
  20 import com.google.gwt.user.client.DeferredCommand;\r
  21 import com.google.gwt.user.client.Event.NativePreviewEvent;\r
  22 import com.google.gwt.user.client.ui.AbstractImagePrototype;\r
  23 import com.google.gwt.user.client.ui.Button;\r
  24 import com.google.gwt.user.client.ui.DialogBox;\r
  25 import com.google.gwt.user.client.ui.HTML;\r
  26 import com.google.gwt.user.client.ui.HasHorizontalAlignment;\r
  27 import com.google.gwt.user.client.ui.HorizontalPanel;\r
  28 import com.google.gwt.user.client.ui.VerticalPanel;\r
  29 \r
  30 /**\r
  31  * The 'delete file' dialog box.\r
  32  */\r
  33 public class DeleteFileDialog extends DialogBox {\r
  34 \r
  35         /**\r
  36          * The widget's constructor.\r
  37          *\r
  38          * @param images the supplied images\r
  39          */\r
  40         public DeleteFileDialog(Images images) {\r
  41                 // Set the dialog's caption.\r
  42                 setText("Confirmation");\r
  43                 setAnimationEnabled(true);\r
  44                 Object selection = GSS.get().getCurrentSelection();\r
  45                 // Create a VerticalPanel to contain the label and the buttons.\r
  46                 VerticalPanel outer = new VerticalPanel();\r
  47                 HorizontalPanel buttons = new HorizontalPanel();\r
  48 \r
  49                 HTML text;\r
  50                 if (selection instanceof FileResource)\r
  51                         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
  52                 else\r
  53                         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
  54                 text.setStyleName("pithos-warnMessage");\r
  55                 outer.add(text);\r
  56 \r
  57                 // Create the 'Delete' button, along with a listener that hides the dialog\r
  58                 // when the button is clicked and deletes the file.\r
  59                 Button ok = new Button("Delete", new ClickHandler() {\r
  60                         @Override\r
  61                         public void onClick(ClickEvent event) {\r
  62                                 deleteFile();\r
  63                                 hide();\r
  64                         }\r
  65                 });\r
  66                 ok.getElement().setId("confirmation.ok");\r
  67                 buttons.add(ok);\r
  68                 buttons.setCellHorizontalAlignment(ok, HasHorizontalAlignment.ALIGN_CENTER);\r
  69                 // Create the 'Cancel' button, along with a listener that hides the\r
  70                 // dialog when the button is clicked.\r
  71                 Button cancel = new Button("Cancel", new ClickHandler() {\r
  72                         @Override\r
  73                         public void onClick(ClickEvent event) {\r
  74                                 hide();\r
  75                         }\r
  76                 });\r
  77                 cancel.getElement().setId("confirmation.cancel");\r
  78                 buttons.add(cancel);\r
  79                 buttons.setCellHorizontalAlignment(cancel, HasHorizontalAlignment.ALIGN_CENTER);\r
  80                 buttons.setSpacing(8);\r
  81                 buttons.setStyleName("pithos-warnMessage");\r
  82                 outer.setStyleName("pithos-warnMessage");\r
  83                 outer.add(buttons);\r
  84                 outer.setCellHorizontalAlignment(text, HasHorizontalAlignment.ALIGN_CENTER);\r
  85                 outer.setCellHorizontalAlignment(buttons, HasHorizontalAlignment.ALIGN_CENTER);\r
  86                 setWidget(outer);\r
  87         }\r
  88 \r
  89         /**\r
  90          * Generate an RPC request to delete a file.\r
  91          *\r
  92          * @param userId the ID of the current user\r
  93          */\r
  94         private void deleteFile() {\r
  95                 Object selection = GSS.get().getCurrentSelection();\r
  96                 if (selection == null) {\r
  97                         GSS.get().displayError("No file was selected");\r
  98                         return;\r
  99                 }\r
 100                 if (selection instanceof FileResource) {\r
 101                         FileResource file = (FileResource) selection;\r
 102 \r
 103                         DeleteCommand df = new DeleteCommand(file.getUri()){\r
 104 \r
 105                                 @Override\r
 106                                 public void onComplete() {\r
 107                                         GSS.get().getTreeView().updateNode(GSS.get().getTreeView().getSelection());\r
 108                                         GSS.get().getStatusPanel().updateStats();\r
 109                                 }\r
 110 \r
 111                                 @Override\r
 112                                 public void onError(Throwable t) {\r
 113                                         GWT.log("", t);\r
 114                                         if(t instanceof RestException){\r
 115                                                 int statusCode = ((RestException)t).getHttpStatusCode();\r
 116                                                 if(statusCode == 405)\r
 117                                                         GSS.get().displayError("You don't have the necessary permissions");\r
 118                                                 else if(statusCode == 404)\r
 119                                                         GSS.get().displayError("File not found");\r
 120                                                 else\r
 121                                                         GSS.get().displayError("Unable to delete file: "+((RestException)t).getHttpStatusText());\r
 122                                         }\r
 123                                         else\r
 124                                                 GSS.get().displayError("System error unable to delete file: "+t.getMessage());\r
 125                                 }\r
 126                         };\r
 127 \r
 128                         DeferredCommand.addCommand(df);\r
 129                 }\r
 130                 else if(selection instanceof List){\r
 131                         List<FileResource> files = (List<FileResource>) selection;\r
 132                         List<String> fileIds = new ArrayList<String>();\r
 133                         for(FileResource f : files)\r
 134                                 fileIds.add(f.getUri());\r
 135 \r
 136                         MultipleDeleteCommand ed = new MultipleDeleteCommand(fileIds.toArray(new String[0])){\r
 137 \r
 138                                 @Override\r
 139                                 public void onComplete() {\r
 140                                         GSS.get().getTreeView().updateNode(GSS.get().getTreeView().getSelection());\r
 141                                 }\r
 142 \r
 143                                 @Override\r
 144                                 public void onError(Throwable t) {\r
 145                                         GWT.log("", t);\r
 146                                         GSS.get().getTreeView().updateNode(GSS.get().getTreeView().getSelection());\r
 147                                 }\r
 148 \r
 149                                 @Override\r
 150                                 public void onError(String path, Throwable t) {\r
 151                                         GWT.log("", t);\r
 152                                         if(t instanceof RestException){\r
 153                                                 int statusCode = ((RestException)t).getHttpStatusCode();\r
 154                                                 if(statusCode == 405)\r
 155                                                         GSS.get().displayError("You don't have the necessary permissions");\r
 156                                                 else if(statusCode == 404)\r
 157                                                         GSS.get().displayError("File not found");\r
 158                                                 else\r
 159                                                         GSS.get().displayError("Unable to delete file:"+((RestException)t).getHttpStatusText());\r
 160                                         }\r
 161                                         else\r
 162                                                 GSS.get().displayError("System error unable to delete file:"+t.getMessage());\r
 163 \r
 164                                 }\r
 165                         };\r
 166 \r
 167                         DeferredCommand.addCommand(ed);\r
 168                 }\r
 169         }\r
 170 \r
 171         @Override\r
 172         protected void onPreviewNativeEvent(NativePreviewEvent preview) {\r
 173                 super.onPreviewNativeEvent(preview);\r
 174 \r
 175                 NativeEvent evt = preview.getNativeEvent();\r
 176                 if (evt.getType().equals("keydown"))\r
 177                         // Use the popup's key preview hooks to close the dialog when either\r
 178                         // enter or escape is pressed.\r
 179                         switch (evt.getKeyCode()) {\r
 180                                 case KeyCodes.KEY_ENTER:\r
 181                                         hide();\r
 182                                         deleteFile();\r
 183                                         break;\r
 184                                 case KeyCodes.KEY_ESCAPE:\r
 185                                         hide();\r
 186                                         break;\r
 187                         }\r
 188         }\r
 189 \r
 190 \r
 191 \r
 192 }\r