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