code.grnet.gr Git - pithos/blob - gss/src/gr/ebs/gss/client/dnd/DnDTreeItem.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.dnd;
  20
  21 import gr.ebs.gss.client.Folders;
  22 import gr.ebs.gss.client.GSS;
  23 import gr.ebs.gss.client.rest.resource.FolderResource;
  24 import gr.ebs.gss.client.rest.resource.OtherUserResource;
  25 import gr.ebs.gss.client.rest.resource.OthersResource;
  26 import gr.ebs.gss.client.rest.resource.SharedResource;
  27 import gr.ebs.gss.client.rest.resource.TrashResource;
  28
  29 import java.util.ArrayList;
  30 import java.util.List;
  31
  32 import com.google.gwt.user.client.DOM;
  33 import com.google.gwt.user.client.ui.MouseListener;
  34 import com.google.gwt.user.client.ui.SourcesMouseEvents;
  35 import com.google.gwt.user.client.ui.TreeItem;
  36 import com.google.gwt.user.client.ui.Widget;
  37
  38
  39 /**
  40  * @author kman
  41  *
  42  */
  43 public class DnDTreeItem extends TreeItem implements SourcesMouseEvents {
  44         public static final int FOLDER = 0;
  45         public static final int SHARED = 1;
  46         public static final int TRASH = 2;
  47         public static final int OTHERS = 3;
  48
  49         private DnDFocusPanel focus;
  50         private String type;
  51         private Widget content;
  52         private Widget toDrag;
  53         private DnDDropController drop;
  54         private List<DnDTreeItem> toRemove = new ArrayList();
  55         private boolean draggable = false;
  56
  57
  58         public DnDTreeItem(Widget widget,String name, boolean _draggable) {
  59                 super();
  60                 draggable = _draggable;
  61                 content = widget;
  62                 focus = new DnDFocusPanel(content,this);
  63                 focus.setTabIndex(-1);
  64                 setWidget(focus);
  65         }
  66
  67         public void setFocus(){
  68                 ((DnDFocusPanel)getWidget()).setFocus(true);
  69         }
  70
  71         public void updateWidget(Widget widget){
  72                 content = widget;
  73                 focus.setWidget(content);
  74
  75         }
  76
  77         public void addMouseListener(MouseListener mouseListener){
  78                 focus.addMouseListener(mouseListener);
  79         }
  80
  81         public void removeMouseListener(MouseListener mouseListener){
  82                 focus.removeMouseListener(mouseListener);
  83         }
  84
  85
  86         /**
  87          * Retrieve the drop.
  88          *
  89          * @return the drop
  90          */
  91         public DnDDropController getDrop() {
  92                 return drop;
  93         }
  94
  95
  96
  97         public Widget getContent() {
  98                 return content;
  99         }
 100
 101
 102         /* (non-Javadoc)
 103          * @see com.google.gwt.user.client.ui.TreeItem#removeItems()
 104          */
 105         @Override
 106         public void removeItems() {
 107                 toRemove = new ArrayList();
 108                 removeItems(this);
 109                 for(DnDTreeItem it : toRemove)
 110                         if(it.getDrop() != null)
 111                                 GSS.get().getDragController().unregisterDropController(it.getDrop());
 112                 toRemove.clear();
 113                 super.removeItems();
 114
 115         }
 116
 117         /* (non-Javadoc)
 118          * @see com.google.gwt.user.client.ui.TreeItem#removeItem(com.google.gwt.user.client.ui.TreeItem)
 119          */
 120         @Override
 121         public void removeItem(TreeItem item) {
 122                 item.removeItems();
 123                 if(item instanceof DnDTreeItem){
 124                         DnDTreeItem it = (DnDTreeItem) item;
 125                         if(it.getDrop() != null)
 126                                 GSS.get().getDragController().unregisterDropController(it.getDrop());
 127                 }
 128                 super.removeItem(item);
 129
 130         }
 131         public void doDroppable(){
 132                 drop = new DnDDropController(focus);
 133                 GSS.get().getDragController().registerDropController(drop);
 134         }
 135
 136         public void doDraggable(){
 137                 GSS.get().getDragController().makeDraggable(getFocus(), getContent());
 138                 drop = new DnDDropController(focus);
 139                 GSS.get().getDragController().registerDropController(drop);
 140         }
 141
 142         public void undoDraggable(){
 143                 GSS.get().getDragController().makeNotDraggable(getFocus());
 144                 if(drop!=null)
 145                         GSS.get().getDragController().unregisterDropController(getDrop());
 146         }
 147
 148         public void undoDroppable(){
 149                 if(drop!=null)
 150                         GSS.get().getDragController().unregisterDropController(getDrop());
 151         }
 152
 153         protected void removeItems(DnDTreeItem item){
 154                 for(int i=0;i<item.getChildCount();i++) {
 155                         DnDTreeItem it = (DnDTreeItem)item.getChild(i);
 156                         toRemove.add(it);
 157                         removeItems(it);
 158                 }
 159         }
 160
 161
 162         /**
 163          * Retrieve the focus.
 164          *
 165          * @return the focus
 166          */
 167         public DnDFocusPanel getFocus() {
 168                 return focus;
 169         }
 170
 171
 172         /**
 173          * Retrieve the draggable.
 174          *
 175          * @return the draggable
 176          */
 177         public boolean isDraggable() {
 178                 return draggable;
 179         }
 180
 181         public DnDTreeItem getChild(FolderResource folder){
 182                 for(int i=0; i< getChildCount(); i++){
 183                         DnDTreeItem c = (DnDTreeItem) getChild(i);
 184                         if(c.getUserObject() instanceof FolderResource)
 185                                 if(((FolderResource)c.getUserObject()).getUri().equals(folder.getUri()))
 186                                         return c;
 187                 }
 188                 return null;
 189         }
 190
 191         public DnDTreeItem getChild(OtherUserResource user){
 192                 for(int i=0; i< getChildCount(); i++){
 193                         DnDTreeItem c = (DnDTreeItem) getChild(i);
 194                         if(c.getUserObject() instanceof OtherUserResource)
 195                                 if(((OtherUserResource)c.getUserObject()).getUri().equals(user.getUri()))
 196                                         return c;
 197                 }
 198                 return null;
 199         }
 200
 201         public void insertItem(TreeItem item, int position) {
 202             addItem(item);
 203             //if(position != 0)
 204                 DOM.insertChild(getElement(), item.getElement(), position);
 205           }
 206
 207
 208         public int getItemType(){
 209                 Folders f = GSS.get().getFolders();
 210                 if(f.isFileItem(this))
 211                         return FOLDER;
 212                 if(f.isMySharedItem(this))
 213                         return SHARED;
 214                 if(f.isOthersSharedItem(this))
 215                         return OTHERS;
 216                 return TRASH;
 217         }
 218
 219
 220         /**
 221          * Retrieve the folderResource.
 222          *
 223          * @return the folderResource
 224          */
 225         public FolderResource getFolderResource() {
 226                 if(getUserObject() instanceof FolderResource)
 227                         return (FolderResource)getUserObject();
 228                 return null;
 229         }
 230
 231
 232
 233
 234
 235         /**
 236          * Retrieve the sharedResource.
 237          *
 238          * @return the sharedResource
 239          */
 240         public SharedResource getSharedResource() {
 241                 if(getUserObject() instanceof SharedResource)
 242                         return (SharedResource)getUserObject();
 243                 return null;
 244         }
 245
 246
 247
 248
 249
 250         /**
 251          * Retrieve the trashResource.
 252          *
 253          * @return the trashResource
 254          */
 255         public TrashResource getTrashResource() {
 256                 if(getUserObject() instanceof TrashResource)
 257                         return (TrashResource)getUserObject();
 258                 return null;
 259         }
 260
 261
 262
 263
 264
 265         /**
 266          * Retrieve the othersResource.
 267          *
 268          * @return the othersResource
 269          */
 270         public OthersResource getOthersResource() {
 271                 if(getUserObject() instanceof OthersResource)
 272                         return (OthersResource)getUserObject();
 273                 return null;
 274         }
 275
 276
 277         /**
 278          * Retrieve the otherUserResource.
 279          *
 280          * @return the otherUserResource
 281          */
 282         public OtherUserResource getOtherUserResource() {
 283                 if(getUserObject() instanceof OtherUserResource)
 284                         return (OtherUserResource)getUserObject();
 285                 return null;
 286         }
 287
 288
 289
 290
 291         public boolean needExpanding(){
 292                 /*if(GSS.get().getFolders().isMySharedItem(this) && ! GSS.get().getFolders().isMyShares(this)){
 293                         if(getFolderResource() != null){
 294                                 SharedResource sr = ((DnDTreeItem)GSS.get().getFolders().getMySharesItem()).getSharedResource();
 295                                 int count =0;
 296                                 for(String s : getFolderResource().getSubfolderPaths())
 297                                         if(sr.getSubfolders().contains(s))
 298                                                 count++;
 299                                 if(count != getChildCount())
 300                                         return true;
 301                         }
 302                 }
 303                 else*/
 304                 if(getFolderResource() != null){
 305                         //if(equals(GSS.get().getFolders().getRootItem()))
 306                                 //return false;
 307                         if(getFolderResource().getFolders().size() > 0)
 308                                 for(FolderResource r : getFolderResource().getFolders() )
 309                                         if(r.isNeedsExpanding())
 310                                                 return true;
 311                         if(getFolderResource().getSubfolderPaths().size() != getChildCount())
 312                                 return true;
 313                 }
 314                 else if (getOtherUserResource() != null)
 315                         if(getOtherUserResource().getSubfolderPaths().size() != getChildCount())
 316                                 return true;
 317                 return false;
 318         }
 319
 320 }