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.dom.client.NativeEvent;
  30 import com.google.gwt.event.dom.client.ClickEvent;
  31 import com.google.gwt.event.dom.client.ClickHandler;
  32 import com.google.gwt.event.dom.client.FocusEvent;
  33 import com.google.gwt.event.dom.client.FocusHandler;
  34 import com.google.gwt.event.dom.client.KeyCodes;
  35 import com.google.gwt.event.dom.client.KeyUpEvent;
  36 import com.google.gwt.event.dom.client.KeyUpHandler;
  37 import com.google.gwt.http.client.URL;
  38 import com.google.gwt.user.client.DeferredCommand;
  39 import com.google.gwt.user.client.Event.NativePreviewEvent;
  40 import com.google.gwt.user.client.ui.Button;
  41 import com.google.gwt.user.client.ui.DialogBox;
  42 import com.google.gwt.user.client.ui.FlexTable;
  43 import com.google.gwt.user.client.ui.HasHorizontalAlignment;
  44 import com.google.gwt.user.client.ui.HorizontalPanel;
  45 import com.google.gwt.user.client.ui.Label;
  46 import com.google.gwt.user.client.ui.MultiWordSuggestOracle;
  47 import com.google.gwt.user.client.ui.SuggestBox;
  48 import com.google.gwt.user.client.ui.VerticalPanel;
  49
  50 /**
  51  * @author kman
  52  */
  53 public class UserAddDialog extends DialogBox {
  54
  55         private MultiWordSuggestOracle oracle = new MultiWordSuggestOracle();
  56         private SuggestBox suggestBox = new SuggestBox(oracle);
  57
  58         String selectedUser=null;
  59         FlexTable userTable = new FlexTable();
  60
  61         /**
  62          * The widget's constructor.
  63          */
  64         public UserAddDialog() {
  65                 setAnimationEnabled(true);
  66                 setText("Add User");
  67                 VerticalPanel panel = new VerticalPanel();
  68                 setWidget(panel);
  69                 panel.addStyleName("gwt-TabPanelBottom");
  70                 userTable.addStyleName("gss-permList");
  71                 userTable.setWidget(0, 0, new Label("Username:"));
  72                 userTable.getFlexCellFormatter().setStyleName(0, 0, "props-toplabels");
  73                 suggestBox.getTextBox().addFocusHandler(new FocusHandler() {
  74
  75                         @Override
  76                         public void onFocus(FocusEvent event) {
  77                                 if (selectedUser != null && selectedUser.endsWith("@"))
  78                                         updateSuggestions();
  79                         }
  80                 });
  81
  82                 suggestBox.addKeyUpHandler(new KeyUpHandler() {
  83
  84                         @Override
  85                         public void onKeyUp(KeyUpEvent event) {
  86                                 // Ignore the arrow keys.
  87                                 int keyCode=event.getNativeKeyCode();
  88                                 if(keyCode == KeyCodes.KEY_UP ||
  89                                                 keyCode == KeyCodes.KEY_DOWN ||
  90                                                 keyCode == KeyCodes.KEY_LEFT ||
  91                                                 keyCode == KeyCodes.KEY_RIGHT)
  92                                         return;
  93                                 String text = suggestBox.getText().trim();
  94                                 // Avoid useless queries for keystrokes that do not modify the
  95                                 // text.
  96                                 if (text.equals(selectedUser))
  97                                         return;
  98                                 selectedUser = text;
  99                                 // Go to the server only if the user typed the @ character.
 100                                 if (selectedUser.endsWith("@"))
 101                                         updateSuggestions();
 102                         }
 103                 });
 104         userTable.setWidget(0, 1, suggestBox);
 105         panel.add(userTable);
 106                 HorizontalPanel buttons = new HorizontalPanel();
 107                 Button ok = new Button("OK", new ClickHandler() {
 108                         @Override
 109                         public void onClick(ClickEvent event) {
 110                                 addUser();
 111                                 hide();
 112                         }
 113                 });
 114                 buttons.add(ok);
 115                 buttons.setCellHorizontalAlignment(ok, HasHorizontalAlignment.ALIGN_CENTER);
 116                 // Create the 'Cancel' button, along with a listener that hides the
 117                 // dialog when the button is clicked.
 118                 Button cancel = new Button("Cancel", new ClickHandler() {
 119                         @Override
 120                         public void onClick(ClickEvent event) {
 121                                 hide();
 122                         }
 123                 });
 124                 buttons.add(cancel);
 125                 buttons.setCellHorizontalAlignment(cancel, HasHorizontalAlignment.ALIGN_CENTER);
 126                 buttons.setSpacing(8);
 127                 buttons.addStyleName("gwt-TabPanelBottom");
 128                 panel.add(buttons);
 129                 panel.setCellHorizontalAlignment(buttons, HasHorizontalAlignment.ALIGN_CENTER);
 130                 panel.addStyleName("gss-DialogBox");
 131         }
 132
 133         @Override
 134         public void center() {
 135                 super.center();
 136                 suggestBox.setFocus(true);
 137         }
 138
 139         @Override
 140         protected void onPreviewNativeEvent(NativePreviewEvent preview) {
 141                 super.onPreviewNativeEvent(preview);
 142
 143                 NativeEvent evt = preview.getNativeEvent();
 144                 if (evt.getType().equals("keydown"))
 145                         // Use the popup's key preview hooks to close the dialog when either
 146                         // enter or escape is pressed.
 147                         switch (evt.getKeyCode()) {
 148                                 case KeyCodes.KEY_ENTER:
 149                                         addUser();
 150                                         hide();
 151                                         break;
 152                                 case KeyCodes.KEY_ESCAPE:
 153                                         hide();
 154                                         break;
 155                         }
 156         }
 157
 158         /**
 159          * Generate a request to add a user to a group.
 160          *
 161          * @param groupName the name of the group to create
 162          */
 163         private void addUser() {
 164                 GroupResource group = (GroupResource) GSS.get().getCurrentSelection();
 165                 selectedUser = suggestBox.getText();
 166                 if ( group == null ) {
 167                         GSS.get().displayError("Empty group name!");
 168                         return;
 169                 }
 170                 if ( selectedUser == null ) {
 171                         GSS.get().displayError("No User Selected!");
 172                         return;
 173                 }
 174                 PostCommand cg = new PostCommand(group.getUri()+"?name="+selectedUser, "", 201){
 175                         @Override
 176                         public void onComplete() {
 177                                 GSS.get().getGroups().updateGroups();
 178                                 GSS.get().showUserList();
 179                         }
 180
 181                         @Override
 182                         public void onError(Throwable t) {
 183                                 GWT.log("", t);
 184                                 if(t instanceof RestException){
 185                                         int statusCode = ((RestException)t).getHttpStatusCode();
 186                                         if(statusCode == 405)
 187                                                 GSS.get().displayError("You don't have the necessary permissions");
 188                                         else if(statusCode == 404)
 189                                                 GSS.get().displayError("User does not exist");
 190                                         else if(statusCode == 409)
 191                                                 GSS.get().displayError("A user with the same name already exists");
 192                                         else if(statusCode == 413)
 193                                                 GSS.get().displayError("Your quota has been exceeded");
 194                                         else
 195                                                 GSS.get().displayError("Unable to add user: "+((RestException)t).getHttpStatusText());
 196                                 }
 197                                 else
 198                                         GSS.get().displayError("System error adding user: "+t.getMessage());
 199                         }
 200                 };
 201                 DeferredCommand.addCommand(cg);
 202         }
 203
 204         /**
 205          * Update the list of suggestions.
 206          */
 207         protected void updateSuggestions() {
 208                 final GSS app = GSS.get();
 209                 String query = selectedUser.substring(0, selectedUser.length()-1);
 210                 GWT.log("Searching for " + query, null);
 211
 212                 GetCommand<UserSearchResource> eg = new GetCommand<UserSearchResource>(UserSearchResource.class,
 213                                         app.getApiPath() + "users/" + URL.encodeComponent(query), false) {
 214
 215                         @Override
 216                         public void onComplete() {
 217                                 DisplayHelper.hideSuggestions(suggestBox);
 218                                 oracle.clear();
 219                                 UserSearchResource s = getResult();
 220                                 for (UserResource user : s.getUsers()) {
 221                                         GWT.log("Found " + user.getUsername(), null);
 222                                         oracle.add(user.getUsername());
 223                                 }
 224                                 DisplayHelper.showSuggestions(suggestBox, selectedUser);
 225                         }
 226
 227                         @Override
 228                         public void onError(Throwable t) {
 229                                 if(t instanceof RestException)
 230                                         app.displayError("Unable to perform search: "+((RestException)t).getHttpStatusText());
 231                                 else
 232                                         app.displayError("System error while searching for users: "+t.getMessage());
 233                                 GWT.log("", t);
 234                                 DisplayHelper.log(t.getMessage());
 235                         }
 236
 237                 };
 238                 DeferredCommand.addCommand(eg);
 239         }
 240
 241 }