code.grnet.gr Git - pithos-web-client/blob - src/gr/grnet/pithos/web/client/grouptree/GroupTreeViewModel.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
  36 package gr.grnet.pithos.web.client.grouptree;
  37
  38 import gr.grnet.pithos.web.client.Pithos;
  39 import gr.grnet.pithos.web.client.foldertree.File;
  40 import gr.grnet.pithos.web.client.foldertree.FolderTreeViewModel;
  41 import gr.grnet.pithos.web.client.grouptree.GroupTreeView.Templates;
  42
  43 import java.util.HashMap;
  44 import java.util.HashSet;
  45 import java.util.Map;
  46 import java.util.Set;
  47
  48 import com.google.gwt.cell.client.AbstractCell;
  49 import com.google.gwt.cell.client.Cell;
  50 import com.google.gwt.event.dom.client.ContextMenuEvent;
  51 import com.google.gwt.safehtml.shared.SafeHtmlBuilder;
  52 import com.google.gwt.user.client.ui.AbstractImagePrototype;
  53 import com.google.gwt.view.client.ListDataProvider;
  54 import com.google.gwt.view.client.SelectionChangeEvent;
  55 import com.google.gwt.view.client.SingleSelectionModel;
  56 import com.google.gwt.view.client.TreeViewModel;
  57
  58 public class GroupTreeViewModel implements TreeViewModel {
  59
  60     protected Pithos app;
  61
  62     private ListDataProvider<String> rootDataProvider = new ListDataProvider<String>();
  63
  64     private Cell<String> rootCell = new AbstractCell<String>(ContextMenuEvent.getType().getName()) {
  65
  66                 @Override
  67                 public void render(@SuppressWarnings("unused") Context context, String value, SafeHtmlBuilder sb) {
  68             String html = AbstractImagePrototype.create(GroupTreeView.images.groups()).getHTML();
  69             sb.appendHtmlConstant(html);
  70             sb.append(Templates.INSTANCE.nameSpan(value));
  71                 }
  72
  73         @Override
  74         public void onBrowserEvent(@SuppressWarnings("unused") Cell.Context context, @SuppressWarnings("unused") com.google.gwt.dom.client.Element parent, @SuppressWarnings("unused") String s, com.google.gwt.dom.client.NativeEvent event, @SuppressWarnings("unused") com.google.gwt.cell.client.ValueUpdater<String> valueUpdater) {
  75             GroupTreeViewModel.this.rootSelectionModel.setSelected(s, true);
  76             if (event.getType().equals(ContextMenuEvent.getType().getName())) {
  77                 GroupContextMenu menu = new GroupContextMenu(app, GroupTreeView.images, null);
  78                 menu.setPopupPosition(event.getClientX(), event.getClientY());
  79                 menu.show();
  80             }
  81         }
  82         };
  83
  84         private Cell<Group> groupCell = new AbstractCell<Group>(ContextMenuEvent.getType().getName()) {
  85
  86                 @Override
  87                 public void render(@SuppressWarnings("unused") Context context, Group value, SafeHtmlBuilder sb) {
  88             String html = AbstractImagePrototype.create(GroupTreeView.images.group()).getHTML();
  89             sb.appendHtmlConstant(html);
  90             sb.append(Templates.INSTANCE.nameSpan(value.getName()));
  91                 }
  92
  93         @Override
  94         public void onBrowserEvent(@SuppressWarnings("unused") Cell.Context context, @SuppressWarnings("unused") com.google.gwt.dom.client.Element parent, Group group, com.google.gwt.dom.client.NativeEvent event, @SuppressWarnings("unused") com.google.gwt.cell.client.ValueUpdater<Group> valueUpdater) {
  95             GroupTreeViewModel.this.groupSelectionModel.setSelected(group, true);
  96             if (event.getType().equals(ContextMenuEvent.getType().getName())) {
  97                 GroupContextMenu menu = new GroupContextMenu(app, GroupTreeView.images, group);
  98                 menu.setPopupPosition(event.getClientX(), event.getClientY());
  99                 menu.show();
 100             }
 101         }
 102         };
 103
 104     private Cell<User> userCell = new AbstractCell<User>(ContextMenuEvent.getType().getName()) {
 105
 106                 @Override
 107                 public void render(@SuppressWarnings("unused") Context context, User value, SafeHtmlBuilder sb) {
 108             String html = AbstractImagePrototype.create(GroupTreeView.images.user()).getHTML();
 109             sb.appendHtmlConstant(html);
 110             sb.append(Templates.INSTANCE.nameSpan(value.getName()));
 111                 }
 112
 113         @Override
 114         public void onBrowserEvent(@SuppressWarnings("unused") Cell.Context context, @SuppressWarnings("unused") com.google.gwt.dom.client.Element parent, User user, com.google.gwt.dom.client.NativeEvent event, @SuppressWarnings("unused") com.google.gwt.cell.client.ValueUpdater<User> valueUpdater) {
 115             GroupTreeViewModel.this.userSelectionModel.setSelected(user, true);
 116             if (event.getType().equals(ContextMenuEvent.getType().getName())) {
 117                 UserContextMenu menu = new UserContextMenu(app, GroupTreeView.images, user);
 118                 menu.setPopupPosition(event.getClientX(), event.getClientY());
 119                 menu.show();
 120             }
 121         }
 122     };
 123
 124     protected ListDataProvider<Group> groupsDataProvider = new ListDataProvider<Group>();
 125
 126     protected Map<Group, ListDataProvider<User>> userDataProviderMap = new HashMap<Group, ListDataProvider<User>>();
 127
 128     protected Map<String, Set<File>> sharedFiles = new HashMap<String, Set<File>>();
 129
 130     SingleSelectionModel<String> rootSelectionModel;
 131     SingleSelectionModel<Group> groupSelectionModel;
 132     SingleSelectionModel<User> userSelectionModel;
 133
 134     public GroupTreeViewModel(Pithos _app) {
 135         app = _app;
 136         rootSelectionModel = new SingleSelectionModel<String>();
 137         app.addSelectionModel(rootSelectionModel);
 138         rootSelectionModel.addSelectionChangeHandler(new SelectionChangeEvent.Handler() {
 139
 140                         @Override
 141                         public void onSelectionChange(SelectionChangeEvent event) {
 142                                 if (rootSelectionModel.getSelectedObject() != null) {
 143                                         app.deselectOthers(app.getGroupTreeView(), rootSelectionModel);
 144                                         app.showFiles(new HashSet<File>());
 145                                 }
 146                         }
 147                 });
 148
 149         groupSelectionModel = new SingleSelectionModel<Group>();
 150         app.addSelectionModel(groupSelectionModel);
 151         groupSelectionModel.addSelectionChangeHandler(new SelectionChangeEvent.Handler() {
 152
 153                         @Override
 154                         public void onSelectionChange(SelectionChangeEvent event) {
 155                                 if (groupSelectionModel.getSelectedObject() != null) {
 156                                         app.deselectOthers(app.getGroupTreeView(), groupSelectionModel);
 157                                         app.showFiles(new HashSet<File>());
 158                                 }
 159                         }
 160                 });
 161
 162         userSelectionModel = new SingleSelectionModel<User>();
 163         app.addSelectionModel(userSelectionModel);
 164         userSelectionModel.addSelectionChangeHandler(new SelectionChangeEvent.Handler() {
 165
 166                         @Override
 167                         public void onSelectionChange(SelectionChangeEvent event) {
 168                                 if (userSelectionModel.getSelectedObject() != null) {
 169                                         app.deselectOthers(app.getGroupTreeView(), userSelectionModel);
 170                                         app.showFiles(new HashSet<File>());
 171                                 }
 172                         }
 173                 });
 174 }
 175
 176     @Override
 177     public <T> NodeInfo<?> getNodeInfo(T value) {
 178         if (value == null) {
 179                 rootDataProvider.getList().add("");
 180             return new DefaultNodeInfo<String>(rootDataProvider, rootCell,  rootSelectionModel, null);
 181         }
 182         else if (value instanceof String) {
 183                 groupsDataProvider.getList().clear();
 184                 groupsDataProvider.getList().addAll(app.getAccount().getGroups());
 185             return new DefaultNodeInfo<Group>(groupsDataProvider, groupCell, groupSelectionModel, null);
 186         }
 187         else { //Group
 188                 Group g = (Group) value;
 189                         if (userDataProviderMap.get(g) == null) {
 190                                 userDataProviderMap.put(g, new ListDataProvider<User>());
 191                         }
 192                         final ListDataProvider<User> dataProvider = userDataProviderMap.get(g);
 193                         dataProvider.getList().clear();
 194                         for (String u : g.getMembers())
 195                                 dataProvider.getList().add(new User(u, g));
 196                 return new DefaultNodeInfo<User>(dataProvider, userCell, userSelectionModel, null);
 197         }
 198     }
 199
 200         @Override
 201     public boolean isLeaf(Object o) {
 202         if (o instanceof String) {
 203                 return ((String) o).length() == 0 || app.getAccount().getGroups().isEmpty();
 204         }
 205         else if (o instanceof Group)
 206                 return ((Group) o).getMembers().isEmpty();
 207         else if (o != null)
 208                 return true;
 209         return false;
 210     }
 211
 212         public void initialize() {
 213         rootDataProvider.getList().clear();
 214         rootDataProvider.getList().add("Groups");
 215         }
 216
 217         public void updateGroupNode(Group group) {
 218                 if (group == null) {
 219                         groupsDataProvider.getList().clear();
 220                         groupsDataProvider.getList().addAll(app.getAccount().getGroups());
 221                 }
 222                 else {
 223                         if (userDataProviderMap.get(group) == null) {
 224                                 userDataProviderMap.put(group, new ListDataProvider<User>());
 225                         }
 226                         final ListDataProvider<User> dataProvider = userDataProviderMap.get(group);
 227                         dataProvider.getList().clear();
 228                         for (String u : group.getMembers())
 229                                 dataProvider.getList().add(new User(u, group));
 230                 }
 231         }
 232
 233         public Object getSelectedObject() {
 234                 if (rootSelectionModel.getSelectedObject() != null)
 235                         return rootSelectionModel.getSelectedObject();
 236                 if (groupSelectionModel.getSelectedObject() != null)
 237                         return groupSelectionModel.getSelectedObject();
 238                 if (userSelectionModel.getSelectedObject() != null)
 239                         return userSelectionModel.getSelectedObject();
 240                 return null;
 241         }
 242 }