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 com.google.gwt.core.client.Scheduler;\r
  38 import com.google.gwt.event.dom.client.KeyDownEvent;\r
  39 import com.google.gwt.http.client.Request;\r
  40 import com.google.gwt.http.client.RequestBuilder;\r
  41 import com.google.gwt.http.client.RequestCallback;\r
  42 import com.google.gwt.http.client.RequestException;\r
  43 import com.google.gwt.http.client.Response;\r
  44 import com.google.gwt.json.client.JSONArray;\r
  45 import com.google.gwt.json.client.JSONObject;\r
  46 import com.google.gwt.json.client.JSONParser;\r
  47 import com.google.gwt.json.client.JSONString;\r
  48 import com.google.gwt.json.client.JSONValue;\r
  49 import com.google.gwt.user.client.Event;\r
  50 import gr.grnet.pithos.web.client.MessagePanel.Images;\r
  51 import gr.grnet.pithos.web.client.foldertree.File;\r
  52 import gr.grnet.pithos.web.client.foldertree.Folder;\r
  53 import gr.grnet.pithos.web.client.foldertree.Resource;\r
  54 import gr.grnet.pithos.web.client.rest.DeleteCommand;\r
  55 import gr.grnet.pithos.web.client.rest.DeleteRequest;\r
  56 import gr.grnet.pithos.web.client.rest.GetRequest;\r
  57 import gr.grnet.pithos.web.client.rest.RestException;\r
  58 import gr.grnet.pithos.web.client.rest.RestRequestCallback;\r
  59 import gr.grnet.pithos.web.client.rest.resource.FolderResource;\r
  60 import gr.grnet.pithos.web.client.rest.resource.RestResource;\r
  61 import gr.grnet.pithos.web.client.rest.resource.RestResourceWrapper;\r
  62 import gr.grnet.pithos.web.client.rest.resource.TrashFolderResource;\r
  63 \r
  64 import com.google.gwt.core.client.GWT;\r
  65 import com.google.gwt.dom.client.NativeEvent;\r
  66 import com.google.gwt.event.dom.client.ClickEvent;\r
  67 import com.google.gwt.event.dom.client.ClickHandler;\r
  68 import com.google.gwt.event.dom.client.KeyCodes;\r
  69 import com.google.gwt.user.client.DeferredCommand;\r
  70 import com.google.gwt.user.client.Event.NativePreviewEvent;\r
  71 import com.google.gwt.user.client.ui.AbstractImagePrototype;\r
  72 import com.google.gwt.user.client.ui.Button;\r
  73 import com.google.gwt.user.client.ui.DialogBox;\r
  74 import com.google.gwt.user.client.ui.HTML;\r
  75 import com.google.gwt.user.client.ui.HasHorizontalAlignment;\r
  76 import com.google.gwt.user.client.ui.HorizontalPanel;\r
  77 import com.google.gwt.user.client.ui.VerticalPanel;\r
  78 import java.util.Iterator;\r
  79 import java.util.List;\r
  80 \r
  81 /**\r
  82  * The 'delete folder' dialog box.\r
  83  */\r
  84 public class DeleteFolderDialog extends DialogBox {\r
  85 \r
  86     private GSS app;\r
  87     private Folder folder;\r
  88     \r
  89         /**\r
  90          * The widget's constructor.\r
  91          * @param images the supplied images\r
  92          */\r
  93         public DeleteFolderDialog(GSS app, Images images, Folder folder) {\r
  94         this.app = app;\r
  95         this.folder = folder;\r
  96                 // Set the dialog's caption.\r
  97                 setText("Confirmation");\r
  98                 setAnimationEnabled(true);\r
  99                 // Create a VerticalPanel to contain the HTML label and the buttons.\r
 100                 VerticalPanel outer = new VerticalPanel();\r
 101                 HorizontalPanel buttons = new HorizontalPanel();\r
 102 \r
 103                 HTML text = new HTML("<table><tr><td rowspan='2'>" + AbstractImagePrototype.create(images.warn()).getHTML() +\r
 104                                         "</td><td>" + "Are you sure you want to <b>permanently</b> delete folder '" + folder.getName() +\r
 105                                         "'?</td></tr></table>");\r
 106                 text.setStyleName("pithos-warnMessage");\r
 107                 outer.add(text);\r
 108 \r
 109                 // Create the 'Delete' button, along with a listener that hides the dialog\r
 110                 // when the button is clicked and deletes the folder.\r
 111                 Button ok = new Button("Delete", new ClickHandler() {\r
 112                         @Override\r
 113                         public void onClick(ClickEvent event) {\r
 114                                 deleteFolder();\r
 115                                 hide();\r
 116                         }\r
 117                 });\r
 118                 buttons.add(ok);\r
 119                 buttons.setCellHorizontalAlignment(ok, HasHorizontalAlignment.ALIGN_CENTER);\r
 120                 // Create the 'Cancel' button, along with a listener that hides the\r
 121                 // dialog when the button is clicked.\r
 122                 Button cancel = new Button("Cancel", new ClickHandler() {\r
 123                         @Override\r
 124                         public void onClick(ClickEvent event) {\r
 125                                 hide();\r
 126                         }\r
 127                 });\r
 128                 buttons.add(cancel);\r
 129                 buttons.setCellHorizontalAlignment(cancel, HasHorizontalAlignment.ALIGN_CENTER);\r
 130                 buttons.setSpacing(8);\r
 131                 buttons.setStyleName("pithos-warnMessage");\r
 132                 outer.setStyleName("pithos-warnMessage");\r
 133                 outer.add(buttons);\r
 134                 outer.setCellHorizontalAlignment(text, HasHorizontalAlignment.ALIGN_CENTER);\r
 135                 outer.setCellHorizontalAlignment(buttons, HasHorizontalAlignment.ALIGN_CENTER);\r
 136                 setWidget(outer);\r
 137         }\r
 138 \r
 139         /**\r
 140          * Generate an RPC request to delete a folder.\r
 141          *\r
 142          */\r
 143         private void deleteFolder() {\r
 144         String path = app.getApiPath() + app.getUsername() + "/" + folder.getContainer() + "?format=json&delimiter=/&prefix=" + folder.getPrefix();\r
 145         RequestBuilder builder = new RequestBuilder(RequestBuilder.GET, path);\r
 146         builder.setHeader("If-Modified-Since", "0");\r
 147         builder.setHeader("X-Auth-Token", app.getToken());\r
 148         try {\r
 149             builder.sendRequest("", new RequestCallback() {\r
 150                 @Override\r
 151                 public void onResponseReceived(Request request, Response response) {\r
 152                     if (response.getStatusCode() == Response.SC_OK) {\r
 153                         JSONValue json = JSONParser.parseStrict(response.getText());\r
 154                         JSONArray array = json.isArray();\r
 155                         int i = 0;\r
 156                         if (array != null) {\r
 157                             deleteObject(i, array);\r
 158                         }\r
 159                     }\r
 160                 }\r
 161 \r
 162                 @Override\r
 163                 public void onError(Request request, Throwable exception) {\r
 164                     GSS.get().displayError("System error unable to delete folder: " + exception.getMessage());\r
 165                 }\r
 166             });\r
 167         }\r
 168         catch (RequestException e) {\r
 169         }\r
 170         }\r
 171 \r
 172     private void deleteObject(final int i, final JSONArray array) {\r
 173         if (i < array.size()) {\r
 174             JSONObject o = array.get(i).isObject();\r
 175             if (o != null && !o.containsKey("subdir")) {\r
 176                 JSONString name = o.get("name").isString();\r
 177                 String path = app.getApiPath() + app.getUsername() + "/" + folder.getContainer() + "/" + name.stringValue();\r
 178                 DeleteRequest delete = new DeleteRequest(path) {\r
 179                     @Override\r
 180                     public void onSuccess(Resource result) {\r
 181                         deleteObject(i + 1, array);\r
 182                     }\r
 183 \r
 184                     @Override\r
 185                     public void onError(Throwable t) {\r
 186                         GWT.log("", t);\r
 187                         GSS.get().displayError("System error unable to delete folder: " + t.getMessage());\r
 188                     }\r
 189                 };\r
 190                 delete.setHeader("X-Auth-Token", app.getToken());\r
 191                 Scheduler.get().scheduleDeferred(delete);\r
 192             }\r
 193             else {\r
 194                 String subdir = o.get("subdir").isString().stringValue();\r
 195                 subdir = subdir.substring(0, subdir.length() - 1);\r
 196                 String path = app.getApiPath() + app.getUsername() + "/" + folder.getContainer() + "?format=json&delimiter=/&prefix=" + subdir;\r
 197                 RequestBuilder builder = new RequestBuilder(RequestBuilder.GET, path);\r
 198                 builder.setHeader("If-Modified-Since", "0");\r
 199                 builder.setHeader("X-Auth-Token", app.getToken());\r
 200                 try {\r
 201                     builder.sendRequest("", new RequestCallback() {\r
 202                         @Override\r
 203                         public void onResponseReceived(Request request, Response response) {\r
 204                             if (response.getStatusCode() == Response.SC_OK) {\r
 205                                 JSONValue json = JSONParser.parseStrict(response.getText());\r
 206                                 JSONArray array2 = json.isArray();\r
 207                                 if (array2 != null) {\r
 208                                     int l = array.size();\r
 209                                     for (int j=0; j<array2.size(); j++) {\r
 210                                         array.set(l++, array2.get(j));\r
 211                                     }\r
 212                                 }\r
 213                                 deleteObject(i + 1, array);\r
 214                             }\r
 215                         }\r
 216 \r
 217                         @Override\r
 218                         public void onError(Request request, Throwable exception) {\r
 219                             GSS.get().displayError("System error unable to delete folder: " + exception.getMessage());\r
 220                         }\r
 221                     });\r
 222                 }\r
 223                 catch (RequestException e) {\r
 224                 }\r
 225             }\r
 226         }\r
 227         else {\r
 228             String prefix = folder.getPrefix();\r
 229             String path = app.getApiPath() + app.getUsername() + "/" + folder.getContainer() + (prefix.length() == 0 ? "" : "/" + prefix);\r
 230             DeleteRequest deleteFolder = new DeleteRequest(path) {\r
 231                 @Override\r
 232                 public void onSuccess(Resource result) {\r
 233                     app.updateFolder(folder.getParent());\r
 234                 }\r
 235 \r
 236                 @Override\r
 237                 public void onError(Throwable t) {\r
 238                     GWT.log("", t);\r
 239                     if (t instanceof RestException) {\r
 240                         app.displayError("Unable to delete folder: "+((RestException) t).getHttpStatusText());\r
 241                     }\r
 242                     else\r
 243                         GSS.get().displayError("System error unable to delete folder: " + t.getMessage());\r
 244                 }\r
 245             };\r
 246             deleteFolder.setHeader("X-Auth-Token", app.getToken());\r
 247             Scheduler.get().scheduleDeferred(deleteFolder);\r
 248         }\r
 249     }\r
 250 \r
 251         @Override\r
 252         protected void onPreviewNativeEvent(NativePreviewEvent preview) {\r
 253                 super.onPreviewNativeEvent(preview);\r
 254 \r
 255                 NativeEvent evt = preview.getNativeEvent();\r
 256                 if (evt.getType().equals(KeyDownEvent.getType().getName()))\r
 257                         // Use the popup's key preview hooks to close the dialog when either\r
 258                         // enter or escape is pressed.\r
 259                         switch (evt.getKeyCode()) {\r
 260                                 case KeyCodes.KEY_ENTER:\r
 261                                         hide();\r
 262                                         deleteFolder();\r
 263                                         break;\r
 264                                 case KeyCodes.KEY_ESCAPE:\r
 265                                         hide();\r
 266                                         break;\r
 267                         }\r
 268         }\r
 269 \r
 270 }\r