code.grnet.gr Git - pithos/blob - src/gr/ebs/gss/client/UserAddDialog.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.rest.GetCommand;
  22 import gr.ebs.gss.client.rest.PostCommand;
  23 import gr.ebs.gss.client.rest.RestException;
  24 import gr.ebs.gss.client.rest.resource.GroupResource;
  25 import gr.ebs.gss.client.rest.resource.UserResource;
  26 import gr.ebs.gss.client.rest.resource.UserSearchResource;
  27
  28 import com.google.gwt.core.client.GWT;
  29 import com.google.gwt.http.client.URL;
  30 import com.google.gwt.user.client.DeferredCommand;
  31 import com.google.gwt.user.client.ui.Button;
  32 import com.google.gwt.user.client.ui.ClickListener;
  33 import com.google.gwt.user.client.ui.DialogBox;
  34 import com.google.gwt.user.client.ui.FlexTable;
  35 import com.google.gwt.user.client.ui.FocusListenerAdapter;
  36 import com.google.gwt.user.client.ui.HasHorizontalAlignment;
  37 import com.google.gwt.user.client.ui.HorizontalPanel;
  38 import com.google.gwt.user.client.ui.KeyboardListener;
  39 import com.google.gwt.user.client.ui.KeyboardListenerAdapter;
  40 import com.google.gwt.user.client.ui.Label;
  41 import com.google.gwt.user.client.ui.MultiWordSuggestOracle;
  42 import com.google.gwt.user.client.ui.SuggestBox;
  43 import com.google.gwt.user.client.ui.VerticalPanel;
  44 import com.google.gwt.user.client.ui.Widget;
  45
  46 /**
  47  * @author kman
  48  */
  49 public class UserAddDialog extends DialogBox {
  50
  51         private MultiWordSuggestOracle oracle = new MultiWordSuggestOracle();
  52         private SuggestBox suggestBox = new SuggestBox(oracle);
  53
  54         String selectedUser=null;
  55         FlexTable userTable = new FlexTable();
  56
  57         /**
  58          * The widget's constructor.
  59          */
  60         public UserAddDialog() {
  61                 setAnimationEnabled(true);
  62                 setText("Add User");
  63                 VerticalPanel panel = new VerticalPanel();
  64                 setWidget(panel);
  65                 panel.addStyleName("gwt-TabPanelBottom");
  66                 userTable.addStyleName("gss-permList");
  67                 userTable.setWidget(0, 0, new Label("Username:"));
  68                 userTable.getFlexCellFormatter().setStyleName(0, 0, "props-toplabels");
  69                 suggestBox.addFocusListener(new FocusListenerAdapter() {
  70                         @Override
  71                         public void onFocus(Widget sender) {
  72                                 if (selectedUser != null && selectedUser.endsWith("@"))
  73                                         updateSuggestions();
  74                         }
  75                 });
  76                 suggestBox.addKeyboardListener(new KeyboardListenerAdapter() {
  77                         @Override
  78                         public void onKeyUp(Widget sender, char keyCode, int modifiers) {
  79                                 // Ignore the arrow keys.
  80                                 if (keyCode==KEY_UP || keyCode==KEY_DOWN || keyCode==KEY_LEFT || keyCode==KEY_RIGHT)
  81                                         return;
  82                                 String text = suggestBox.getText().trim();
  83                                 // Avoid useless queries for keystrokes that do not modify the text.
  84                                 if (text.equals(selectedUser))
  85                                         return;
  86                                 selectedUser = text;
  87                                 // Go to the server only if the user typed the @ character.
  88                                 if (selectedUser.endsWith("@"))
  89                                         updateSuggestions();
  90                         }
  91                 });
  92         userTable.setWidget(0, 1, suggestBox);
  93         panel.add(userTable);
  94                 HorizontalPanel buttons = new HorizontalPanel();
  95                 Button ok = new Button("OK", new ClickListener() {
  96
  97                         public void onClick(Widget sender) {
  98                                 addUser();
  99                                 hide();
 100                         }
 101                 });
 102                 buttons.add(ok);
 103                 buttons.setCellHorizontalAlignment(ok, HasHorizontalAlignment.ALIGN_CENTER);
 104                 // Create the 'Cancel' button, along with a listener that hides the
 105                 // dialog when the button is clicked.
 106                 Button cancel = new Button("Cancel", new ClickListener() {
 107
 108                         public void onClick(Widget sender) {
 109                                 hide();
 110                         }
 111                 });
 112                 buttons.add(cancel);
 113                 buttons.setCellHorizontalAlignment(cancel, HasHorizontalAlignment.ALIGN_CENTER);
 114                 buttons.setSpacing(8);
 115                 buttons.addStyleName("gwt-TabPanelBottom");
 116                 panel.add(buttons);
 117                 panel.setCellHorizontalAlignment(buttons, HasHorizontalAlignment.ALIGN_CENTER);
 118                 panel.addStyleName("gss-DialogBox");
 119         }
 120
 121         @Override
 122         public void center() {
 123                 super.center();
 124                 suggestBox.setFocus(true);
 125         }
 126
 127         @Override
 128         public boolean onKeyDownPreview(final char key, final int modifiers) {
 129                 // Use the popup's key preview hooks to close the dialog when either
 130                 // enter or escape is pressed.
 131                 switch (key) {
 132                         case KeyboardListener.KEY_ENTER:
 133                                 hide();
 134                                 addUser();
 135                                 break;
 136                         case KeyboardListener.KEY_ESCAPE:
 137                                 hide();
 138                                 break;
 139                 }
 140                 return true;
 141         }
 142
 143         /**
 144          * Generate a request to add a user to a group.
 145          *
 146          * @param groupName the name of the group to create
 147          */
 148         private void addUser() {
 149                 GroupResource group = (GroupResource) GSS.get().getCurrentSelection();
 150                 selectedUser = suggestBox.getText();
 151                 if ( group == null ) {
 152                         GSS.get().displayError("Empty group name!");
 153                         return;
 154                 }
 155                 if ( selectedUser == null ) {
 156                         GSS.get().displayError("No User Selected!");
 157                         return;
 158                 }
 159                 PostCommand cg = new PostCommand(group.getUri()+"?name="+selectedUser, "", 201){
 160                         @Override
 161                         public void onComplete() {
 162                                 GSS.get().getGroups().updateGroups();
 163                                 GSS.get().showUserList();
 164                         }
 165
 166                         @Override
 167                         public void onError(Throwable t) {
 168                                 GWT.log("", t);
 169                                 if(t instanceof RestException){
 170                                         int statusCode = ((RestException)t).getHttpStatusCode();
 171                                         if(statusCode == 405)
 172                                                 GSS.get().displayError("You don't have the necessary permissions");
 173                                         else if(statusCode == 404)
 174                                                 GSS.get().displayError("User does not exist");
 175                                         else if(statusCode == 409)
 176                                                 GSS.get().displayError("A user with the same name already exists");
 177                                         else if(statusCode == 413)
 178                                                 GSS.get().displayError("Your quota has been exceeded");
 179                                         else
 180                                                 GSS.get().displayError("Unable to add user: "+((RestException)t).getHttpStatusText());
 181                                 }
 182                                 else
 183                                         GSS.get().displayError("System error adding user: "+t.getMessage());
 184                         }
 185                 };
 186                 DeferredCommand.addCommand(cg);
 187         }
 188
 189         /**
 190          * Update the list of suggestions.
 191          */
 192         protected void updateSuggestions() {
 193                 final GSS app = GSS.get();
 194                 String query = selectedUser.substring(0, selectedUser.length()-1);
 195                 GWT.log("Searching for " + query, null);
 196
 197                 GetCommand<UserSearchResource> eg = new GetCommand<UserSearchResource>(UserSearchResource.class,
 198                                         app.getApiPath() + "users/" + URL.encodeComponent(query)) {
 199
 200                         @Override
 201                         public void onComplete() {
 202                                 DisplayHelper.hideSuggestions(suggestBox);
 203                                 oracle.clear();
 204                                 UserSearchResource s = getResult();
 205                                 for (UserResource user : s.getUsers()) {
 206                                         GWT.log("Found " + user.getUsername(), null);
 207                                         oracle.add(user.getUsername());
 208                                 }
 209                                 DisplayHelper.showSuggestions(suggestBox, selectedUser);
 210                         }
 211
 212                         @Override
 213                         public void onError(Throwable t) {
 214                                 if(t instanceof RestException)
 215                                         app.displayError("Unable to perform search: "+((RestException)t).getHttpStatusText());
 216                                 else
 217                                         app.displayError("System error while searching for users: "+t.getMessage());
 218                                 GWT.log("", t);
 219                                 DisplayHelper.log(t.getMessage());
 220                         }
 221
 222                 };
 223                 DeferredCommand.addCommand(eg);
 224         }
 225
 226 }