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

   1 /*\r
   2  * Copyright 2011 GRNET S.A. All rights reserved.\r
   3  *\r
   4  * Redistribution and use in source and binary forms, with or\r
   5  * without modification, are permitted provided that the following\r
   6  * conditions are met:\r
   7  *\r
   8  *   1. Redistributions of source code must retain the above\r
   9  *      copyright notice, this list of conditions and the following\r
  10  *      disclaimer.\r
  11  *\r
  12  *   2. Redistributions in binary form must reproduce the above\r
  13  *      copyright notice, this list of conditions and the following\r
  14  *      disclaimer in the documentation and/or other materials\r
  15  *      provided with the distribution.\r
  16  *\r
  17  * THIS SOFTWARE IS PROVIDED BY GRNET S.A. ``AS IS'' AND ANY EXPRESS\r
  18  * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED\r
  19  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR\r
  20  * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GRNET S.A OR\r
  21  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,\r
  22  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT\r
  23  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF\r
  24  * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED\r
  25  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT\r
  26  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN\r
  27  * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE\r
  28  * POSSIBILITY OF SUCH DAMAGE.\r
  29  *\r
  30  * The views and conclusions contained in the software and\r
  31  * documentation are those of the authors and should not be\r
  32  * interpreted as representing official policies, either expressed\r
  33  * or implied, of GRNET S.A.\r
  34  */\r
  35 package gr.grnet.pithos.web.client;\r
  36 \r
  37 import gr.grnet.pithos.web.client.MessagePanel.Images;\r
  38 import gr.grnet.pithos.web.client.rest.DeleteCommand;\r
  39 import gr.grnet.pithos.web.client.rest.RestException;\r
  40 import gr.grnet.pithos.web.client.rest.resource.FolderResource;\r
  41 import gr.grnet.pithos.web.client.rest.resource.RestResource;\r
  42 import gr.grnet.pithos.web.client.rest.resource.RestResourceWrapper;\r
  43 import gr.grnet.pithos.web.client.rest.resource.TrashFolderResource;\r
  44 \r
  45 import com.google.gwt.core.client.GWT;\r
  46 import com.google.gwt.dom.client.NativeEvent;\r
  47 import com.google.gwt.event.dom.client.ClickEvent;\r
  48 import com.google.gwt.event.dom.client.ClickHandler;\r
  49 import com.google.gwt.event.dom.client.KeyCodes;\r
  50 import com.google.gwt.user.client.DeferredCommand;\r
  51 import com.google.gwt.user.client.Event.NativePreviewEvent;\r
  52 import com.google.gwt.user.client.ui.AbstractImagePrototype;\r
  53 import com.google.gwt.user.client.ui.Button;\r
  54 import com.google.gwt.user.client.ui.DialogBox;\r
  55 import com.google.gwt.user.client.ui.HTML;\r
  56 import com.google.gwt.user.client.ui.HasHorizontalAlignment;\r
  57 import com.google.gwt.user.client.ui.HorizontalPanel;\r
  58 import com.google.gwt.user.client.ui.VerticalPanel;\r
  59 \r
  60 /**\r
  61  * The 'delete folder' dialog box.\r
  62  */\r
  63 public class DeleteFolderDialog extends DialogBox {\r
  64 \r
  65         /**\r
  66          * The widget's constructor.\r
  67          * @param images the supplied images\r
  68          */\r
  69         public DeleteFolderDialog(Images images) {\r
  70                 // Set the dialog's caption.\r
  71                 setText("Confirmation");\r
  72                 setAnimationEnabled(true);\r
  73                 FolderResource folder = ((RestResourceWrapper) GSS.get().getTreeView().getSelection()).getResource();\r
  74                 // Create a VerticalPanel to contain the HTML label and the buttons.\r
  75                 VerticalPanel outer = new VerticalPanel();\r
  76                 HorizontalPanel buttons = new HorizontalPanel();\r
  77 \r
  78                 HTML text = new HTML("<table><tr><td rowspan='2'>" + AbstractImagePrototype.create(images.warn()).getHTML() +\r
  79                                         "</td><td>" + "Are you sure you want to <b>permanently</b> delete folder '" + folder.getName() +\r
  80                                         "'?</td></tr></table>");\r
  81                 text.setStyleName("pithos-warnMessage");\r
  82                 outer.add(text);\r
  83 \r
  84                 // Create the 'Delete' button, along with a listener that hides the dialog\r
  85                 // when the button is clicked and deletes the folder.\r
  86                 Button ok = new Button("Delete", new ClickHandler() {\r
  87                         @Override\r
  88                         public void onClick(ClickEvent event) {\r
  89                                 deleteFolder();\r
  90                                 hide();\r
  91                         }\r
  92                 });\r
  93                 ok.getElement().setId("confirmation.ok");\r
  94                 buttons.add(ok);\r
  95                 buttons.setCellHorizontalAlignment(ok, HasHorizontalAlignment.ALIGN_CENTER);\r
  96                 // Create the 'Cancel' button, along with a listener that hides the\r
  97                 // dialog when the button is clicked.\r
  98                 Button cancel = new Button("Cancel", new ClickHandler() {\r
  99                         @Override\r
 100                         public void onClick(ClickEvent event) {\r
 101                                 hide();\r
 102                         }\r
 103                 });\r
 104                 cancel.getElement().setId("confirmation.cancel");\r
 105                 buttons.add(cancel);\r
 106                 buttons.setCellHorizontalAlignment(cancel, HasHorizontalAlignment.ALIGN_CENTER);\r
 107                 buttons.setSpacing(8);\r
 108                 buttons.setStyleName("pithos-warnMessage");\r
 109                 outer.setStyleName("pithos-warnMessage");\r
 110                 outer.add(buttons);\r
 111                 outer.setCellHorizontalAlignment(text, HasHorizontalAlignment.ALIGN_CENTER);\r
 112                 outer.setCellHorizontalAlignment(buttons, HasHorizontalAlignment.ALIGN_CENTER);\r
 113                 setWidget(outer);\r
 114         }\r
 115 \r
 116         /**\r
 117          * Generate an RPC request to delete a folder.\r
 118          *\r
 119          * @param userId the ID of the current user\r
 120          */\r
 121         private void deleteFolder() {\r
 122                 RestResource folder = GSS.get().getTreeView().getSelection();\r
 123                 if (folder == null) {\r
 124                         GSS.get().displayError("No folder was selected");\r
 125                         return;\r
 126                 }\r
 127                 if(!(folder instanceof RestResourceWrapper))\r
 128                         return;\r
 129 \r
 130                 DeleteCommand df = new DeleteCommand(folder.getUri()){\r
 131 \r
 132                         @Override\r
 133                         public void onComplete() {\r
 134                                 FolderResource fres = ((RestResourceWrapper) GSS.get().getTreeView().getSelection()).getResource();\r
 135                                 if((RestResourceWrapper) GSS.get().getTreeView().getSelection() instanceof TrashFolderResource)\r
 136                                         GSS.get().getTreeView().updateTrashNode();\r
 137                                 else\r
 138                                         GSS.get().getTreeView().updateNodeChildrenForRemove(fres.getParentURI());\r
 139                                 GSS.get().getTreeView().clearSelection();\r
 140                                 GSS.get().showFileList(true);\r
 141                                 \r
 142                                 GSS.get().getStatusPanel().updateStats();\r
 143                         }\r
 144 \r
 145                         @Override\r
 146                         public void onError(Throwable t) {\r
 147                                 GWT.log("", t);\r
 148                                 if(t instanceof RestException){\r
 149                                         int statusCode = ((RestException)t).getHttpStatusCode();\r
 150                                         if(statusCode == 405)\r
 151                                                 GSS.get().displayError("You don't have the necessary permissions");\r
 152                                         else if(statusCode == 404)\r
 153                                                 GSS.get().displayError("Folder not found");\r
 154                                         else\r
 155                                                 GSS.get().displayError("Unable to delete folder: "+((RestException)t).getHttpStatusText());\r
 156                                 }\r
 157                                 else\r
 158                                         GSS.get().displayError("System error unable to delete folder: "+t.getMessage());\r
 159                         }\r
 160                 };\r
 161 \r
 162                 DeferredCommand.addCommand(df);\r
 163         }\r
 164 \r
 165         @Override\r
 166         protected void onPreviewNativeEvent(NativePreviewEvent preview) {\r
 167                 super.onPreviewNativeEvent(preview);\r
 168 \r
 169                 NativeEvent evt = preview.getNativeEvent();\r
 170                 if (evt.getType().equals("keydown"))\r
 171                         // Use the popup's key preview hooks to close the dialog when either\r
 172                         // enter or escape is pressed.\r
 173                         switch (evt.getKeyCode()) {\r
 174                                 case KeyCodes.KEY_ENTER:\r
 175                                         hide();\r
 176                                         deleteFolder();\r
 177                                         break;\r
 178                                 case KeyCodes.KEY_ESCAPE:\r
 179                                         hide();\r
 180                                         break;\r
 181                         }\r
 182         }\r
 183 \r
 184 }\r