code.grnet.gr Git - pithos-web-client/blob - src/gr/grnet/pithos/web/client/PermissionsAddDialog.java

   1 /*
   2  * Copyright 2011 GRNET S.A. All rights reserved.
   3  *
   4  * Redistribution and use in source and binary forms, with or
   5  * without modification, are permitted provided that the following
   6  * conditions are met:
   7  *
   8  *   1. Redistributions of source code must retain the above
   9  *      copyright notice, this list of conditions and the following
  10  *      disclaimer.
  11  *
  12  *   2. Redistributions in binary form must reproduce the above
  13  *      copyright notice, this list of conditions and the following
  14  *      disclaimer in the documentation and/or other materials
  15  *      provided with the distribution.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY GRNET S.A. ``AS IS'' AND ANY EXPRESS
  18  * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  19  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  20  * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GRNET S.A OR
  21  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  22  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  23  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
  24  * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
  25  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  26  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
  27  * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  28  * POSSIBILITY OF SUCH DAMAGE.
  29  *
  30  * The views and conclusions contained in the software and
  31  * documentation are those of the authors and should not be
  32  * interpreted as representing official policies, either expressed
  33  * or implied, of GRNET S.A.
  34  */
  35 package gr.grnet.pithos.web.client;
  36
  37 import gr.grnet.pithos.web.client.rest.GetCommand;
  38 import gr.grnet.pithos.web.client.rest.RestException;
  39 import gr.grnet.pithos.web.client.rest.resource.GroupResource;
  40 import gr.grnet.pithos.web.client.rest.resource.PermissionHolder;
  41 import gr.grnet.pithos.web.client.rest.resource.UserResource;
  42 import gr.grnet.pithos.web.client.rest.resource.UserSearchResource;
  43
  44 import java.util.List;
  45
  46 import com.google.gwt.core.client.GWT;
  47 import com.google.gwt.dom.client.NativeEvent;
  48 import com.google.gwt.event.dom.client.ClickEvent;
  49 import com.google.gwt.event.dom.client.ClickHandler;
  50 import com.google.gwt.event.dom.client.FocusEvent;
  51 import com.google.gwt.event.dom.client.FocusHandler;
  52 import com.google.gwt.event.dom.client.KeyCodes;
  53 import com.google.gwt.event.dom.client.KeyUpEvent;
  54 import com.google.gwt.event.dom.client.KeyUpHandler;
  55 import com.google.gwt.http.client.URL;
  56 import com.google.gwt.user.client.DeferredCommand;
  57 import com.google.gwt.user.client.Event.NativePreviewEvent;
  58 import com.google.gwt.user.client.ui.Button;
  59 import com.google.gwt.user.client.ui.CheckBox;
  60 import com.google.gwt.user.client.ui.DialogBox;
  61 import com.google.gwt.user.client.ui.FlexTable;
  62 import com.google.gwt.user.client.ui.HasHorizontalAlignment;
  63 import com.google.gwt.user.client.ui.HorizontalPanel;
  64 import com.google.gwt.user.client.ui.ListBox;
  65 import com.google.gwt.user.client.ui.MultiWordSuggestOracle;
  66 import com.google.gwt.user.client.ui.SuggestBox;
  67 import com.google.gwt.user.client.ui.VerticalPanel;
  68
  69 public class PermissionsAddDialog extends DialogBox {
  70
  71         private MultiWordSuggestOracle oracle = new MultiWordSuggestOracle();
  72         private SuggestBox suggestBox = new SuggestBox(oracle);
  73
  74         private String selectedUser = null;
  75
  76         private List<GroupResource> groups;
  77
  78         private ListBox groupBox = new ListBox();
  79
  80         private CheckBox read = new CheckBox();
  81
  82         private CheckBox write = new CheckBox();
  83
  84         private CheckBox modifyACL = new CheckBox();
  85
  86         private final PermissionsList permList;
  87
  88         boolean userAdd;
  89
  90     private Pithos app;
  91
  92         public PermissionsAddDialog(Pithos _app, List<GroupResource> _groups, PermissionsList _permList, boolean _userAdd) {
  93         app = _app;
  94                 groups = _groups;
  95                 userAdd = _userAdd;
  96                 permList = _permList;
  97
  98                 groupBox.getElement().setId("addPermission.dropDown");
  99
 100                 suggestBox.getElement().setId("addPermission.textBox");
 101
 102                 read.getElement().setId("addPermission.read");
 103
 104                 write.getElement().setId("addPermission.write");
 105
 106                 modifyACL.getElement().setId("addpermission.modify");
 107
 108                 for (GroupResource group : _groups)
 109                         groupBox.addItem(group.getName(), group.getName());
 110                 final VerticalPanel panel = new VerticalPanel();
 111                 final HorizontalPanel buttons = new HorizontalPanel();
 112                 setWidget(panel);
 113                 final FlexTable permTable = new FlexTable();
 114                 permTable.setText(0, 0, "Users/Groups");
 115                 permTable.setText(0, 1, "Read");
 116                 permTable.setText(0, 2, "Write");
 117                 permTable.setText(0, 3, "Modify Access");
 118                 permTable.getFlexCellFormatter().setStyleName(0, 0, "props-toplabels");
 119                 permTable.getFlexCellFormatter().setStyleName(0, 1, "props-toplabels");
 120                 permTable.getFlexCellFormatter().setStyleName(0, 2, "props-toplabels");
 121                 permTable.getFlexCellFormatter().setStyleName(0, 3, "props-toplabels");
 122                 if (userAdd) {
 123                         suggestBox.getTextBox().addFocusHandler(new FocusHandler() {
 124
 125                                 @Override
 126                                 public void onFocus(FocusEvent event) {
 127                                         if (selectedUser != null && selectedUser.endsWith("@"))
 128                                                 updateSuggestions();
 129
 130                                 }
 131                         });
 132
 133                         suggestBox.addKeyUpHandler(new KeyUpHandler() {
 134
 135                                 @Override
 136                                 public void onKeyUp(KeyUpEvent event) {
 137                                         // Ignore the arrow keys.
 138                                         int keyCode = event.getNativeKeyCode();
 139                                         if (keyCode == KeyCodes.KEY_UP ||
 140                                                         keyCode == KeyCodes.KEY_DOWN ||
 141                                                         keyCode == KeyCodes.KEY_LEFT ||
 142                                                         keyCode == KeyCodes.KEY_RIGHT)
 143                                                 return;
 144                                         if (keyCode==KeyCodes.KEY_ESCAPE) {
 145                                                 suggestBox.hideSuggestionList();
 146                                                 return;
 147                                         }
 148                                         String text = suggestBox.getText().trim();
 149                                         // Avoid useless queries for keystrokes that do not modify
 150                                         // the text.
 151                                         if (text.equals(selectedUser))
 152                                                 return;
 153                                         selectedUser = text;
 154                                         // Go to the server only if the user typed the @ character.
 155                                         if (selectedUser.endsWith("@"))
 156                                                 updateSuggestions();
 157                                 }
 158                         });
 159                         permTable.setWidget(1, 0, suggestBox);
 160                 } else
 161                         permTable.setWidget(1, 0, groupBox);
 162                 permTable.setWidget(1, 1, read);
 163                 permTable.setWidget(1, 2, write);
 164                 permTable.setWidget(1, 3, modifyACL);
 165
 166                 permTable.getFlexCellFormatter().setStyleName(1, 0, "props-labels");
 167                 permTable.getFlexCellFormatter().setHorizontalAlignment(1, 1, HasHorizontalAlignment.ALIGN_CENTER);
 168                 permTable.getFlexCellFormatter().setHorizontalAlignment(1, 2, HasHorizontalAlignment.ALIGN_CENTER);
 169                 permTable.getFlexCellFormatter().setHorizontalAlignment(1, 3, HasHorizontalAlignment.ALIGN_CENTER);
 170                 panel.add(permTable);
 171
 172                 final Button ok = new Button("OK", new ClickHandler() {
 173                         @Override
 174                         public void onClick(ClickEvent event) {
 175                                 addPermission();
 176                                 hide();
 177                         }
 178                 });
 179                 ok.getElement().setId("addPermission.button.ok");
 180                 buttons.add(ok);
 181                 buttons.setCellHorizontalAlignment(ok, HasHorizontalAlignment.ALIGN_CENTER);
 182                 // Create the 'Cancel' button, along with a listener that hides the
 183                 // dialog
 184                 // when the button is clicked.
 185                 final Button cancel = new Button("Cancel", new ClickHandler() {
 186                         @Override
 187                         public void onClick(ClickEvent event) {
 188                                 hide();
 189                         }
 190                 });
 191                 cancel.getElement().setId("addPermission.button.cancel");
 192                 buttons.add(cancel);
 193                 buttons.setCellHorizontalAlignment(cancel, HasHorizontalAlignment.ALIGN_CENTER);
 194                 buttons.setSpacing(8);
 195                 buttons.addStyleName("pithos-TabPanelBottom");
 196                 panel.add(buttons);
 197                 panel.addStyleName("pithos-TabPanelBottom");
 198         }
 199
 200         private void addPermission() {
 201                 PermissionHolder perm = new PermissionHolder();
 202                 if (userAdd) {
 203                         selectedUser = suggestBox.getText();
 204                         for(PermissionHolder p : permList.permissions)
 205                                 if (selectedUser.equals(p.getUser())){
 206                                         app.displayError("User already has access to the resource");
 207                                         return;
 208                                 }
 209                         perm.setUser(selectedUser);
 210                 } else {
 211                         String groupId = groupBox.getValue(groupBox.getSelectedIndex());
 212                         GroupResource selected = null;
 213                         for (GroupResource g : groups)
 214                                 if (g.getName().equals(groupId))
 215                                         selected = g;
 216                         if (selected == null)
 217                                 return;
 218                         for(PermissionHolder p : permList.permissions)
 219                                 if (selected.getName().equals(p.getGroup())){
 220                                         app.displayError("Group already has access to the resource");
 221                                         return;
 222                                 }
 223                         perm.setGroup(selected.getName());
 224                 }
 225                 boolean readValue = read.getValue();
 226                 boolean writeValue = write.getValue();
 227                 boolean modifyValue = modifyACL.getValue();
 228
 229                 perm.setRead(readValue);
 230                 perm.setWrite(writeValue);
 231                 perm.setModifyACL(modifyValue);
 232                 permList.addPermission(perm);
 233                 permList.updateTable();
 234         }
 235
 236         @Override
 237         protected void onPreviewNativeEvent(NativePreviewEvent preview) {
 238                 super.onPreviewNativeEvent(preview);
 239
 240                 NativeEvent evt = preview.getNativeEvent();
 241                 if (evt.getType().equals("keydown"))
 242                         // Use the popup's key preview hooks to close the dialog when either
 243                         // enter or escape is pressed.
 244                         switch (evt.getKeyCode()) {
 245                                 case KeyCodes.KEY_ENTER:
 246                                         addPermission();
 247                                         hide();
 248                                         break;
 249                                 case KeyCodes.KEY_ESCAPE:
 250                                         hide();
 251                                         break;
 252                         }
 253         }
 254
 255
 256         @Override
 257         public void center() {
 258                 super.center();
 259                 if (userAdd)
 260                         suggestBox.setFocus(true);
 261         }
 262
 263         /**
 264          * Update the list of suggestions.
 265          */
 266         protected void updateSuggestions() {
 267                 String query = selectedUser.substring(0, selectedUser.length()-1);
 268                 GWT.log("Searching for " + query, null);
 269
 270                 GetCommand<UserSearchResource> eg = new GetCommand<UserSearchResource>(app, UserSearchResource.class,
 271                                         app.getApiPath() + "users/" + URL.encodeComponent(query), false, null) {
 272
 273                         @Override
 274                         public void onComplete() {
 275                                 suggestBox.hideSuggestionList();
 276                                 oracle.clear();
 277                                 UserSearchResource s = getResult();
 278                                 for (UserResource user : s.getUsers()) {
 279                                         GWT.log("Found " + user.getUsername(), null);
 280                                         oracle.add(user.getUsername());
 281                                 }
 282                                 suggestBox.showSuggestionList();
 283                         }
 284
 285                         @Override
 286                         public void onError(Throwable t) {
 287                                 if(t instanceof RestException)
 288                                         app.displayError("Unable to perform search: "+((RestException)t).getHttpStatusText());
 289                                 else
 290                                         app.displayError("System error while searching for users: "+t.getMessage());
 291                                 GWT.log("", t);
 292                                 DisplayHelper.log(t.getMessage());
 293                         }
 294
 295                 };
 296                 DeferredCommand.addCommand(eg);
 297         }
 298 }