code.grnet.gr Git - pithos/blob - src/gr/ebs/gss/client/PermissionsAddDialog.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.RestException;
  23 import gr.ebs.gss.client.rest.resource.GroupResource;
  24 import gr.ebs.gss.client.rest.resource.PermissionHolder;
  25 import gr.ebs.gss.client.rest.resource.UserResource;
  26 import gr.ebs.gss.client.rest.resource.UserSearchResource;
  27
  28 import java.util.List;
  29
  30 import com.google.gwt.core.client.GWT;
  31 import com.google.gwt.http.client.URL;
  32 import com.google.gwt.user.client.DeferredCommand;
  33 import com.google.gwt.user.client.ui.Button;
  34 import com.google.gwt.user.client.ui.CheckBox;
  35 import com.google.gwt.user.client.ui.ClickListener;
  36 import com.google.gwt.user.client.ui.DialogBox;
  37 import com.google.gwt.user.client.ui.FlexTable;
  38 import com.google.gwt.user.client.ui.FocusListenerAdapter;
  39 import com.google.gwt.user.client.ui.HasHorizontalAlignment;
  40 import com.google.gwt.user.client.ui.HorizontalPanel;
  41 import com.google.gwt.user.client.ui.KeyboardListener;
  42 import com.google.gwt.user.client.ui.KeyboardListenerAdapter;
  43 import com.google.gwt.user.client.ui.ListBox;
  44 import com.google.gwt.user.client.ui.MultiWordSuggestOracle;
  45 import com.google.gwt.user.client.ui.SuggestBox;
  46 import com.google.gwt.user.client.ui.VerticalPanel;
  47 import com.google.gwt.user.client.ui.Widget;
  48
  49 /**
  50  * @author kman
  51  */
  52 public class PermissionsAddDialog extends DialogBox {
  53
  54         private MultiWordSuggestOracle oracle = new MultiWordSuggestOracle();
  55         private SuggestBox suggestBox = new SuggestBox(oracle);
  56
  57         private String selectedUser = null;
  58
  59         private List<GroupResource> groups;
  60
  61         private ListBox groupBox = new ListBox();
  62
  63         private CheckBox read = new CheckBox();
  64
  65         private CheckBox write = new CheckBox();
  66
  67         private CheckBox modifyACL = new CheckBox();
  68
  69         private final PermissionsList permList;
  70
  71         boolean userAdd;
  72
  73         public PermissionsAddDialog(List<GroupResource> _groups, PermissionsList _permList, boolean _userAdd) {
  74                 groups = _groups;
  75                 userAdd = _userAdd;
  76                 permList = _permList;
  77                 for (GroupResource group : _groups)
  78                         groupBox.addItem(group.getName(), group.getName());
  79                 final VerticalPanel panel = new VerticalPanel();
  80                 final HorizontalPanel buttons = new HorizontalPanel();
  81                 setWidget(panel);
  82                 final FlexTable permTable = new FlexTable();
  83                 permTable.setText(0, 0, "Users/Groups");
  84                 permTable.setText(0, 1, "Read");
  85                 permTable.setText(0, 2, "Write");
  86                 permTable.setText(0, 3, "Modify Access");
  87                 permTable.getFlexCellFormatter().setStyleName(0, 0, "props-toplabels");
  88                 permTable.getFlexCellFormatter().setStyleName(0, 1, "props-toplabels");
  89                 permTable.getFlexCellFormatter().setStyleName(0, 2, "props-toplabels");
  90                 permTable.getFlexCellFormatter().setStyleName(0, 3, "props-toplabels");
  91                 if (userAdd) {
  92                         suggestBox.addFocusListener(new FocusListenerAdapter() {
  93                                 @Override
  94                                 public void onFocus(Widget sender) {
  95                                         if (selectedUser != null && selectedUser.endsWith("@"))
  96                                                 updateSuggestions();
  97                                 }
  98                         });
  99                         suggestBox.addKeyboardListener(new KeyboardListenerAdapter() {
 100                                 @Override
 101                                 public void onKeyUp(Widget sender, char keyCode, int modifiers) {
 102                                         // Ignore the arrow keys.
 103                                         if (keyCode==KEY_UP || keyCode==KEY_DOWN || keyCode==KEY_LEFT || keyCode==KEY_RIGHT)
 104                                                 return;
 105                                         String text = suggestBox.getText().trim();
 106                                         // Avoid useless queries for keystrokes that do not modify the text.
 107                                         if (text.equals(selectedUser))
 108                                                 return;
 109                                         selectedUser = text;
 110                                         // Go to the server only if the user typed the @ character.
 111                                         if (selectedUser.endsWith("@"))
 112                                                 updateSuggestions();
 113                                 }
 114                         });
 115                         permTable.setWidget(1, 0, suggestBox);
 116                 } else
 117                         permTable.setWidget(1, 0, groupBox);
 118                 permTable.setWidget(1, 1, read);
 119                 permTable.setWidget(1, 2, write);
 120                 permTable.setWidget(1, 3, modifyACL);
 121
 122                 permTable.getFlexCellFormatter().setStyleName(1, 0, "props-labels");
 123                 permTable.getFlexCellFormatter().setHorizontalAlignment(1, 1, HasHorizontalAlignment.ALIGN_CENTER);
 124                 permTable.getFlexCellFormatter().setHorizontalAlignment(1, 2, HasHorizontalAlignment.ALIGN_CENTER);
 125                 permTable.getFlexCellFormatter().setHorizontalAlignment(1, 3, HasHorizontalAlignment.ALIGN_CENTER);
 126                 panel.add(permTable);
 127
 128                 final Button ok = new Button("OK", new ClickListener() {
 129
 130                         public void onClick(Widget sender) {
 131                                 addPermission();
 132                                 hide();
 133                         }
 134                 });
 135                 buttons.add(ok);
 136                 buttons.setCellHorizontalAlignment(ok, HasHorizontalAlignment.ALIGN_CENTER);
 137                 // Create the 'Cancel' button, along with a listener that hides the
 138                 // dialog
 139                 // when the button is clicked.
 140                 final Button cancel = new Button("Cancel", new ClickListener() {
 141
 142                         public void onClick(Widget sender) {
 143                                 hide();
 144                         }
 145                 });
 146                 buttons.add(cancel);
 147                 buttons.setCellHorizontalAlignment(cancel, HasHorizontalAlignment.ALIGN_CENTER);
 148                 buttons.setSpacing(8);
 149                 buttons.addStyleName("gwt-TabPanelBottom");
 150                 panel.add(buttons);
 151                 panel.addStyleName("gwt-TabPanelBottom");
 152         }
 153
 154         private void addPermission() {
 155                 PermissionHolder perm = new PermissionHolder();
 156                 if (userAdd) {
 157                         selectedUser = suggestBox.getText();
 158                         for(PermissionHolder p : permList.permissions)
 159                                 if (selectedUser.equals(p.getUser())){
 160                                         GSS.get().displayError("User already exists");
 161                                         return;
 162                                 }
 163                         perm.setUser(selectedUser);
 164                 } else {
 165                         String groupId = groupBox.getValue(groupBox.getSelectedIndex());
 166                         GroupResource selected = null;
 167                         for (GroupResource g : groups)
 168                                 if (g.getName().equals(groupId))
 169                                         selected = g;
 170                         for(PermissionHolder p : permList.permissions)
 171                                 if (selected.equals(p.getGroup())){
 172                                         GSS.get().displayError("Group already exists");
 173                                         return;
 174                                 }
 175                         perm.setGroup(selected.getName());
 176                 }
 177                 boolean readValue = read.isChecked();
 178                 boolean writeValue = write.isChecked();
 179                 boolean modifyValue = modifyACL.isChecked();
 180
 181                 perm.setRead(readValue);
 182                 perm.setWrite(writeValue);
 183                 perm.setModifyACL(modifyValue);
 184                 permList.addPermission(perm);
 185                 permList.updateTable();
 186         }
 187
 188         @Override
 189         public boolean onKeyDownPreview(final char key, final int modifiers) {
 190                 // Use the popup's key preview hooks to close the dialog when either
 191                 // enter or escape is pressed.
 192                 switch (key) {
 193                         case KeyboardListener.KEY_ENTER:
 194                                 addPermission();
 195                                 hide();
 196                                 break;
 197                         case KeyboardListener.KEY_ESCAPE:
 198                                 hide();
 199                                 break;
 200                 }
 201                 return true;
 202         }
 203
 204         @Override
 205         public void center() {
 206                 super.center();
 207                 if (userAdd)
 208                         suggestBox.setFocus(true);
 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)) {
 221
 222                         @Override
 223                         public void onComplete() {
 224                                 DisplayHelper.hideSuggestions(suggestBox);
 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                                 DisplayHelper.showSuggestions(suggestBox, selectedUser);
 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 }