code.grnet.gr Git - pithos/blob - src/gr/ebs/gss/client/DeleteFolderDialog.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.dnd.DnDTreeItem;\r
  23 import gr.ebs.gss.client.rest.DeleteCommand;\r
  24 import gr.ebs.gss.client.rest.RestException;\r
  25 import gr.ebs.gss.client.rest.resource.FolderResource;\r
  26 \r
  27 import com.google.gwt.core.client.GWT;\r
  28 import com.google.gwt.dom.client.NativeEvent;\r
  29 import com.google.gwt.event.dom.client.ClickEvent;\r
  30 import com.google.gwt.event.dom.client.ClickHandler;\r
  31 import com.google.gwt.event.dom.client.KeyCodes;\r
  32 import com.google.gwt.user.client.DeferredCommand;\r
  33 import com.google.gwt.user.client.Event.NativePreviewEvent;\r
  34 import com.google.gwt.user.client.ui.AbstractImagePrototype;\r
  35 import com.google.gwt.user.client.ui.Button;\r
  36 import com.google.gwt.user.client.ui.DialogBox;\r
  37 import com.google.gwt.user.client.ui.HTML;\r
  38 import com.google.gwt.user.client.ui.HasHorizontalAlignment;\r
  39 import com.google.gwt.user.client.ui.HorizontalPanel;\r
  40 import com.google.gwt.user.client.ui.TreeItem;\r
  41 import com.google.gwt.user.client.ui.VerticalPanel;\r
  42 \r
  43 /**\r
  44  * The 'delete folder' dialog box.\r
  45  */\r
  46 public class DeleteFolderDialog extends DialogBox {\r
  47 \r
  48         /**\r
  49          * The widget's constructor.\r
  50          * @param images the supplied images\r
  51          */\r
  52         public DeleteFolderDialog(Images images) {\r
  53                 // Set the dialog's caption.\r
  54                 setText("Confirmation");\r
  55                 setAnimationEnabled(true);\r
  56                 FolderResource folder = (FolderResource) GSS.get().getCurrentSelection();\r
  57                 // Create a VerticalPanel to contain the HTML label and the buttons.\r
  58                 VerticalPanel outer = new VerticalPanel();\r
  59                 HorizontalPanel buttons = new HorizontalPanel();\r
  60 \r
  61                 HTML text = new HTML("<table><tr><td rowspan='2'>" + AbstractImagePrototype.create(images.warn()).getHTML() +\r
  62                                         "</td><td>" + "Are you sure you want to <b>permanently</b> delete folder '" + folder.getName() +\r
  63                                         "'?</td></tr></table>");\r
  64                 text.setStyleName("gss-warnMessage");\r
  65                 outer.add(text);\r
  66 \r
  67                 // Create the 'Delete' button, along with a listener that hides the dialog\r
  68                 // when the button is clicked and deletes the folder.\r
  69                 Button ok = new Button("Delete", new ClickHandler() {\r
  70                         @Override\r
  71                         public void onClick(ClickEvent event) {\r
  72                                 deleteFolder();\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 when the button is clicked.\r
  80                 Button cancel = new Button("Cancel", new ClickHandler() {\r
  81                         @Override\r
  82                         public void onClick(ClickEvent event) {\r
  83                                 hide();\r
  84                         }\r
  85                 });\r
  86                 buttons.add(cancel);\r
  87                 buttons.setCellHorizontalAlignment(cancel, HasHorizontalAlignment.ALIGN_CENTER);\r
  88                 buttons.setSpacing(8);\r
  89                 buttons.setStyleName("gss-warnMessage");\r
  90                 outer.setStyleName("gss-warnMessage");\r
  91                 outer.add(buttons);\r
  92                 outer.setCellHorizontalAlignment(text, HasHorizontalAlignment.ALIGN_CENTER);\r
  93                 outer.setCellHorizontalAlignment(buttons, HasHorizontalAlignment.ALIGN_CENTER);\r
  94                 setWidget(outer);\r
  95         }\r
  96 \r
  97         /**\r
  98          * Generate an RPC request to delete a folder.\r
  99          *\r
 100          * @param userId the ID of the current user\r
 101          */\r
 102         private void deleteFolder() {\r
 103 \r
 104                 DnDTreeItem folder = (DnDTreeItem) GSS.get().getFolders().getCurrent();\r
 105                 if (folder == null) {\r
 106                         GSS.get().displayError("No folder was selected");\r
 107                         return;\r
 108                 }\r
 109                 if(folder.getFolderResource() == null)\r
 110                         return;\r
 111 \r
 112                 DeleteCommand df = new DeleteCommand(folder.getFolderResource().getUri()){\r
 113 \r
 114                         @Override\r
 115                         public void onComplete() {\r
 116                                 TreeItem curFolder = GSS.get().getFolders().getCurrent();\r
 117                                 if(curFolder.getParentItem() != null){\r
 118                                         GSS.get().getFolders().select(curFolder.getParentItem());\r
 119                                         GSS.get().getFolders().updateFolder((DnDTreeItem) curFolder.getParentItem());\r
 120                                 }\r
 121                                 GSS.get().showFileList(true);\r
 122                                 GSS.get().getStatusPanel().updateStats();\r
 123                         }\r
 124 \r
 125                         @Override\r
 126                         public void onError(Throwable t) {\r
 127                                 GWT.log("", t);\r
 128                                 if(t instanceof RestException){\r
 129                                         int statusCode = ((RestException)t).getHttpStatusCode();\r
 130                                         if(statusCode == 405)\r
 131                                                 GSS.get().displayError("You don't have the necessary permissions");\r
 132                                         else if(statusCode == 404)\r
 133                                                 GSS.get().displayError("Folder not found");\r
 134                                         else\r
 135                                                 GSS.get().displayError("Unable to delete folder: "+((RestException)t).getHttpStatusText());\r
 136                                 }\r
 137                                 else\r
 138                                         GSS.get().displayError("System error unable to delete folder: "+t.getMessage());\r
 139                         }\r
 140                 };\r
 141 \r
 142                 DeferredCommand.addCommand(df);\r
 143         }\r
 144 \r
 145         @Override\r
 146         protected void onPreviewNativeEvent(NativePreviewEvent preview) {\r
 147                 super.onPreviewNativeEvent(preview);\r
 148 \r
 149                 NativeEvent evt = preview.getNativeEvent();\r
 150                 if (evt.getType().equals("keydown"))\r
 151                         // Use the popup's key preview hooks to close the dialog when either\r
 152                         // enter or escape is pressed.\r
 153                         switch (evt.getKeyCode()) {\r
 154                                 case KeyCodes.KEY_ENTER:\r
 155                                         hide();\r
 156                                         deleteFolder();\r
 157                                         break;\r
 158                                 case KeyCodes.KEY_ESCAPE:\r
 159                                         hide();\r
 160                                         break;\r
 161                         }\r
 162         }\r
 163 \r
 164 }\r