code.grnet.gr Git - pithos/blob - web_client/src/gr/grnet/pithos/web/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.grnet.pithos.web.client;
  20
  21 import gr.grnet.pithos.web.client.rest.GetCommand;
  22 import gr.grnet.pithos.web.client.rest.PostCommand;
  23 import gr.grnet.pithos.web.client.rest.RestException;
  24 import gr.grnet.pithos.web.client.rest.resource.GroupResource;
  25 import gr.grnet.pithos.web.client.rest.resource.UserResource;
  26 import gr.grnet.pithos.web.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("pithos-TabPanelBottom");
  70                 userTable.addStyleName("pithos-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                                 if (keyCode==KeyCodes.KEY_ESCAPE) {
  94                                         suggestBox.hideSuggestionList();
  95                                         return;
  96                                 }
  97                                 String text = suggestBox.getText().trim();
  98                                 // Avoid useless queries for keystrokes that do not modify the
  99                                 // text.
 100                                 if (text.equals(selectedUser))
 101                                         return;
 102                                 selectedUser = text;
 103                                 // Go to the server only if the user typed the @ character.
 104                                 if (selectedUser.endsWith("@"))
 105                                         updateSuggestions();
 106                         }
 107                 });
 108                 suggestBox.getElement().setId("addUser.textBox");
 109         userTable.setWidget(0, 1, suggestBox);
 110         panel.add(userTable);
 111                 HorizontalPanel buttons = new HorizontalPanel();
 112                 Button ok = new Button("OK", new ClickHandler() {
 113                         @Override
 114                         public void onClick(ClickEvent event) {
 115                                 addUser();
 116                                 hide();
 117                         }
 118                 });
 119                 ok.getElement().setId("addUser.button.ok");
 120                 buttons.add(ok);
 121                 buttons.setCellHorizontalAlignment(ok, HasHorizontalAlignment.ALIGN_CENTER);
 122                 // Create the 'Cancel' button, along with a listener that hides the
 123                 // dialog when the button is clicked.
 124                 Button cancel = new Button("Cancel", new ClickHandler() {
 125                         @Override
 126                         public void onClick(ClickEvent event) {
 127                                 hide();
 128                         }
 129                 });
 130                 cancel.getElement().setId("addUser.button.cancel");
 131                 buttons.add(cancel);
 132                 buttons.setCellHorizontalAlignment(cancel, HasHorizontalAlignment.ALIGN_CENTER);
 133                 buttons.setSpacing(8);
 134                 buttons.addStyleName("pithos-TabPanelBottom");
 135                 panel.add(buttons);
 136                 panel.setCellHorizontalAlignment(buttons, HasHorizontalAlignment.ALIGN_CENTER);
 137                 panel.addStyleName("pithos-DialogBox");
 138         }
 139
 140         @Override
 141         public void center() {
 142                 super.center();
 143                 suggestBox.setFocus(true);
 144         }
 145
 146         @Override
 147         protected void onPreviewNativeEvent(NativePreviewEvent preview) {
 148                 super.onPreviewNativeEvent(preview);
 149
 150                 NativeEvent evt = preview.getNativeEvent();
 151                 if (evt.getType().equals("keydown"))
 152                         // Use the popup's key preview hooks to close the dialog when either
 153                         // enter or escape is pressed.
 154                         switch (evt.getKeyCode()) {
 155                                 case KeyCodes.KEY_ENTER:
 156                                         addUser();
 157                                         hide();
 158                                         break;
 159                                 case KeyCodes.KEY_ESCAPE:
 160                                         hide();
 161                                         break;
 162                         }
 163         }
 164
 165         /**
 166          * Generate a request to add a user to a group.
 167          *
 168          * @param groupName the name of the group to create
 169          */
 170         private void addUser() {
 171                 GroupResource group = (GroupResource) GSS.get().getCurrentSelection();
 172                 selectedUser = suggestBox.getText();
 173                 if ( group == null ) {
 174                         GSS.get().displayError("Empty group name!");
 175                         return;
 176                 }
 177                 if ( selectedUser == null ) {
 178                         GSS.get().displayError("No User Selected!");
 179                         return;
 180                 }
 181                 PostCommand cg = new PostCommand(group.getUri()+"?name="+selectedUser, "", 201){
 182                         @Override
 183                         public void onComplete() {
 184                                 GSS.get().getGroups().updateGroups();
 185                                 GSS.get().showUserList();
 186                         }
 187
 188                         @Override
 189                         public void onError(Throwable t) {
 190                                 GWT.log("", t);
 191                                 if(t instanceof RestException){
 192                                         int statusCode = ((RestException)t).getHttpStatusCode();
 193                                         if(statusCode == 405)
 194                                                 GSS.get().displayError("You don't have the necessary permissions");
 195                                         else if(statusCode == 404)
 196                                                 GSS.get().displayError("User does not exist");
 197                                         else if(statusCode == 409)
 198                                                 GSS.get().displayError("A user with the same name already exists");
 199                                         else if(statusCode == 413)
 200                                                 GSS.get().displayError("Your quota has been exceeded");
 201                                         else
 202                                                 GSS.get().displayError("Unable to add user: "+((RestException)t).getHttpStatusText());
 203                                 }
 204                                 else
 205                                         GSS.get().displayError("System error adding user: "+t.getMessage());
 206                         }
 207                 };
 208                 DeferredCommand.addCommand(cg);
 209         }
 210
 211         /**
 212          * Update the list of suggestions.
 213          */
 214         protected void updateSuggestions() {
 215                 final GSS app = GSS.get();
 216                 String query = selectedUser.substring(0, selectedUser.length()-1);
 217                 GWT.log("Searching for " + query, null);
 218
 219                 GetCommand<UserSearchResource> eg = new GetCommand<UserSearchResource>(UserSearchResource.class,
 220                                         app.getApiPath() + "users/" + URL.encodeComponent(query), false, null) {
 221
 222                         @Override
 223                         public void onComplete() {
 224                                 suggestBox.hideSuggestionList();
 225                                 oracle.clear();
 226                                 UserSearchResource s = getResult();
 227                                 for (UserResource user : s.getUsers()) {
 228                                         GWT.log("Found " + user.getUsername(), null);
 229                                         oracle.add(user.getUsername());
 230                                 }
 231                                 suggestBox.showSuggestionList();
 232                         }
 233
 234                         @Override
 235                         public void onError(Throwable t) {
 236                                 if(t instanceof RestException)
 237                                         app.displayError("Unable to perform search: "+((RestException)t).getHttpStatusText());
 238                                 else
 239                                         app.displayError("System error while searching for users: "+t.getMessage());
 240                                 GWT.log("", t);
 241                                 DisplayHelper.log(t.getMessage());
 242                         }
 243
 244                 };
 245                 DeferredCommand.addCommand(eg);
 246         }
 247
 248 }