code.grnet.gr Git - pithos-web-client/blob - src/gr/grnet/pithos/web/client/DeleteGroupDialog.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.RestException;\r
   9 import gr.grnet.pithos.web.client.rest.resource.GroupResource;\r
  10 \r
  11 import com.google.gwt.core.client.GWT;\r
  12 import com.google.gwt.dom.client.NativeEvent;\r
  13 import com.google.gwt.event.dom.client.ClickEvent;\r
  14 import com.google.gwt.event.dom.client.ClickHandler;\r
  15 import com.google.gwt.event.dom.client.KeyCodes;\r
  16 import com.google.gwt.user.client.DeferredCommand;\r
  17 import com.google.gwt.user.client.Event.NativePreviewEvent;\r
  18 import com.google.gwt.user.client.ui.AbstractImagePrototype;\r
  19 import com.google.gwt.user.client.ui.Button;\r
  20 import com.google.gwt.user.client.ui.DialogBox;\r
  21 import com.google.gwt.user.client.ui.HTML;\r
  22 import com.google.gwt.user.client.ui.HasHorizontalAlignment;\r
  23 import com.google.gwt.user.client.ui.HorizontalPanel;\r
  24 import com.google.gwt.user.client.ui.TreeItem;\r
  25 import com.google.gwt.user.client.ui.VerticalPanel;\r
  26 \r
  27 /**\r
  28  * The 'delete group' dialog box.\r
  29  */\r
  30 public class DeleteGroupDialog extends DialogBox {\r
  31 \r
  32         /**\r
  33          * The widget's constructor.\r
  34          * @param images the supplied images\r
  35          */\r
  36         public DeleteGroupDialog(final Images images) {\r
  37                 // Use this opportunity to set the dialog's caption.\r
  38                 setText("Delete group");\r
  39                 setAnimationEnabled(true);\r
  40                 final GroupResource group = (GroupResource) GSS.get().getCurrentSelection();\r
  41                 // Create a VerticalPanel to contain the 'about' label and the 'OK'\r
  42                 // button.\r
  43                 final VerticalPanel outer = new VerticalPanel();\r
  44                 final HorizontalPanel buttons = new HorizontalPanel();\r
  45 \r
  46                 // Create the 'about' text and set a style name so we can style it with\r
  47                 // CSS.\r
  48                 final HTML text = new HTML("<table><tr><td>" + AbstractImagePrototype.create(images.warn()).getHTML() + "</td><td>" + "Are you sure you want to delete group '" + group.getName() + "'?</td></tr></table>");\r
  49                 text.setStyleName("pithos-warnMessage");\r
  50                 outer.add(text);\r
  51 \r
  52                 // Create the 'Quit' button, along with a listener that hides the dialog\r
  53                 // when the button is clicked and quits the application.\r
  54                 final Button ok = new Button("OK", new ClickHandler() {\r
  55                         @Override\r
  56                         public void onClick(ClickEvent event) {\r
  57                                 deleteGroup();\r
  58                                 hide();\r
  59                         }\r
  60                 });\r
  61                 ok.getElement().setId("deleteGroup.button.ok");\r
  62                 buttons.add(ok);\r
  63                 buttons.setCellHorizontalAlignment(ok, HasHorizontalAlignment.ALIGN_CENTER);\r
  64                 // Create the 'Cancel' button, along with a listener that hides the\r
  65                 // dialog\r
  66                 // when the button is clicked.\r
  67                 final Button cancel = new Button("Cancel", new ClickHandler() {\r
  68                         @Override\r
  69                         public void onClick(ClickEvent event) {\r
  70                                 hide();\r
  71                         }\r
  72                 });\r
  73                 cancel.getElement().setId("deleteGroup.button.cancel");\r
  74                 buttons.add(cancel);\r
  75                 buttons.setCellHorizontalAlignment(cancel, HasHorizontalAlignment.ALIGN_CENTER);\r
  76                 buttons.setSpacing(8);\r
  77                 buttons.setStyleName("pithos-warnMessage");\r
  78                 outer.setStyleName("pithos-warnMessage");\r
  79                 outer.add(buttons);\r
  80                 outer.setCellHorizontalAlignment(text, HasHorizontalAlignment.ALIGN_CENTER);\r
  81                 outer.setCellHorizontalAlignment(buttons, HasHorizontalAlignment.ALIGN_CENTER);\r
  82                 setWidget(outer);\r
  83         }\r
  84 \r
  85         /**\r
  86          * Generate an RPC request to delete a group.\r
  87          *\r
  88          * @param userId the ID of the current user\r
  89          */\r
  90         private void deleteGroup() {\r
  91                 final TreeItem group = GSS.get().getGroups().getCurrent();\r
  92                 if (group == null) {\r
  93                         GSS.get().displayError("No group was selected!");\r
  94                         return;\r
  95                 }\r
  96                 DeleteCommand dg = new DeleteCommand(((GroupResource)group.getUserObject()).getUri()){\r
  97                         @Override\r
  98                         public void onComplete() {\r
  99                                 GSS.get().getGroups().updateGroups();\r
 100                         }\r
 101 \r
 102                         @Override\r
 103                         public void onError(Throwable t) {\r
 104                                 GWT.log("", t);\r
 105                                 if(t instanceof RestException){\r
 106                                         int statusCode = ((RestException)t).getHttpStatusCode();\r
 107                                         if(statusCode == 405)\r
 108                                                 GSS.get().displayError("You don't have the necessary permissions");\r
 109                                         else if(statusCode == 404)\r
 110                                                 GSS.get().displayError("Group not found");\r
 111                                         else\r
 112                                                 GSS.get().displayError("Unable to delete group:"+((RestException)t).getHttpStatusText());\r
 113                                 }\r
 114                                 else\r
 115                                         GSS.get().displayError("System error unable to delete group:"+t.getMessage());\r
 116                         }\r
 117                 };\r
 118                 DeferredCommand.addCommand(dg);\r
 119         }\r
 120 \r
 121 \r
 122         @Override\r
 123         protected void onPreviewNativeEvent(NativePreviewEvent preview) {\r
 124                 super.onPreviewNativeEvent(preview);\r
 125 \r
 126                 NativeEvent evt = preview.getNativeEvent();\r
 127                 if (evt.getType().equals("keydown"))\r
 128                         // Use the popup's key preview hooks to close the dialog when either\r
 129                         // enter or escape is pressed.\r
 130                         switch (evt.getKeyCode()) {\r
 131                                 case KeyCodes.KEY_ENTER:\r
 132                                         hide();\r
 133                                         deleteGroup();\r
 134                                         break;\r
 135                                 case KeyCodes.KEY_ESCAPE:\r
 136                                         hide();\r
 137                                         break;\r
 138                         }\r
 139         }\r
 140 \r
 141 }\r