code.grnet.gr Git - pithos/blob - src/gr/ebs/gss/client/DeleteUserDialog.java

   1 /*
   2  * Copyright 2008, 2009 Electronic Business Systems Ltd.
   3  *
   4  * This file is part of GSS.
   5  *
   6  * GSS is free software: you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation, either version 3 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * GSS is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with GSS.  If not, see <http://www.gnu.org/licenses/>.
  18  */
  19 package gr.ebs.gss.client;
  20
  21 import gr.ebs.gss.client.MessagePanel.Images;
  22 import gr.ebs.gss.client.rest.DeleteCommand;
  23 import gr.ebs.gss.client.rest.RestException;
  24 import gr.ebs.gss.client.rest.resource.GroupUserResource;
  25
  26 import com.google.gwt.core.client.GWT;
  27 import com.google.gwt.dom.client.NativeEvent;
  28 import com.google.gwt.event.dom.client.ClickEvent;
  29 import com.google.gwt.event.dom.client.ClickHandler;
  30 import com.google.gwt.event.dom.client.KeyCodes;
  31 import com.google.gwt.user.client.DeferredCommand;
  32 import com.google.gwt.user.client.Event.NativePreviewEvent;
  33 import com.google.gwt.user.client.ui.AbstractImagePrototype;
  34 import com.google.gwt.user.client.ui.Button;
  35 import com.google.gwt.user.client.ui.DialogBox;
  36 import com.google.gwt.user.client.ui.HTML;
  37 import com.google.gwt.user.client.ui.HasHorizontalAlignment;
  38 import com.google.gwt.user.client.ui.HorizontalPanel;
  39 import com.google.gwt.user.client.ui.TreeItem;
  40 import com.google.gwt.user.client.ui.VerticalPanel;
  41
  42
  43 /**
  44  * @author kman
  45  *
  46  */
  47 public class DeleteUserDialog extends DialogBox {
  48
  49         /**
  50          * The widget's constructor.
  51          * @param images the supplied images
  52          */
  53         public DeleteUserDialog(final Images images) {
  54                 // Use this opportunity to set the dialog's caption.
  55                 setText("Delete user");
  56                 setAnimationEnabled(true);
  57                 final GroupUserResource group = (GroupUserResource) GSS.get().getCurrentSelection();
  58                 // Create a VerticalPanel to contain the 'about' label and the 'OK'
  59                 // button.
  60                 final VerticalPanel outer = new VerticalPanel();
  61                 final HorizontalPanel buttons = new HorizontalPanel();
  62
  63                 // Create the 'about' text and set a style name so we can style it with
  64                 // CSS.
  65                 final HTML text = new HTML("<table><tr><td>" + AbstractImagePrototype.create(images.warn()).getHTML() + "</td><td>" + "Are you sure you want to remove user '" + group.getName() + "'?</td></tr></table>");
  66                 text.setStyleName("gss-warnMessage");
  67                 outer.add(text);
  68
  69                 // Create the 'Quit' button, along with a listener that hides the dialog
  70                 // when the button is clicked and quits the application.
  71                 final Button ok = new Button("OK", new ClickHandler() {
  72                         @Override
  73                         public void onClick(ClickEvent event) {
  74                                 deleteUser();
  75                                 hide();
  76                         }
  77                 });
  78                 buttons.add(ok);
  79                 buttons.setCellHorizontalAlignment(ok, HasHorizontalAlignment.ALIGN_CENTER);
  80                 // Create the 'Cancel' button, along with a listener that hides the
  81                 // dialog
  82                 // when the button is clicked.
  83                 final Button cancel = new Button("Cancel", new ClickHandler() {
  84                         @Override
  85                         public void onClick(ClickEvent event) {
  86                                 hide();
  87                         }
  88                 });
  89                 buttons.add(cancel);
  90                 buttons.setCellHorizontalAlignment(cancel, HasHorizontalAlignment.ALIGN_CENTER);
  91                 buttons.setSpacing(8);
  92                 buttons.setStyleName("gss-warnMessage");
  93                 outer.setStyleName("gss-warnMessage");
  94                 outer.add(buttons);
  95                 outer.setCellHorizontalAlignment(text, HasHorizontalAlignment.ALIGN_CENTER);
  96                 outer.setCellHorizontalAlignment(buttons, HasHorizontalAlignment.ALIGN_CENTER);
  97                 setWidget(outer);
  98         }
  99
 100         /**
 101          * Generate an RPC request to delete a group.
 102          *
 103          * @param userId the ID of the current user
 104          */
 105         private void deleteUser() {
 106                 final TreeItem user = GSS.get().getGroups().getCurrent();
 107                 final TreeItem group = user.getParentItem();
 108                 if (group == null) {
 109                         GSS.get().displayError("No user was selected!");
 110                         return;
 111                 }
 112                 final GroupUserResource memberR = (GroupUserResource) user.getUserObject();
 113                 DeleteCommand du = new DeleteCommand(memberR.getUri()){
 114
 115                         @Override
 116                         public void onComplete() {
 117                                 GSS.get().getGroups().updateGroups();
 118                         }
 119
 120                         @Override
 121                         public void onError(Throwable t) {
 122                                 GWT.log("", t);
 123                                 if(t instanceof RestException){
 124                                         int statusCode = ((RestException)t).getHttpStatusCode();
 125                                         if(statusCode == 405)
 126                                                 GSS.get().displayError("You don't have the necessary permissions");
 127                                         else if(statusCode == 404)
 128                                                 GSS.get().displayError("User not found");
 129                                         else
 130                                                 GSS.get().displayError("Unable to delete user:"+((RestException)t).getHttpStatusText());
 131                                 }
 132                                 else
 133                                         GSS.get().displayError("System error unable to delete user:"+t.getMessage());
 134                         }
 135                 };
 136                 DeferredCommand.addCommand(du);
 137
 138         }
 139
 140         @Override
 141         protected void onPreviewNativeEvent(NativePreviewEvent preview) {
 142                 super.onPreviewNativeEvent(preview);
 143
 144                 NativeEvent evt = preview.getNativeEvent();
 145                 if (evt.getType().equals("keydown"))
 146                 // Use the popup's key preview hooks to close the dialog when either
 147                 // enter or escape is pressed.
 148                 switch (evt.getKeyCode()) {
 149                         case KeyCodes.KEY_ENTER:
 150                                 hide();
 151                                 deleteUser();
 152                                 break;
 153                         case KeyCodes.KEY_ESCAPE:
 154                                 hide();
 155                                 break;
 156                 }
 157         }
 158
 159 }
 160