code.grnet.gr Git - pithos/blob - src/gr/ebs/gss/client/PopupTree.java

   1 /*
   2  * Copyright 2008, 2009, 2010 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.Folders.Images;
  22 import gr.ebs.gss.client.dnd.DnDTreeItem;
  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 com.google.gwt.dom.client.NativeEvent;
  30 import com.google.gwt.event.dom.client.ContextMenuEvent;
  31 import com.google.gwt.event.dom.client.ContextMenuHandler;
  32 import com.google.gwt.event.dom.client.KeyCodes;
  33 import com.google.gwt.event.logical.shared.OpenEvent;
  34 import com.google.gwt.event.logical.shared.OpenHandler;
  35 import com.google.gwt.event.logical.shared.SelectionEvent;
  36 import com.google.gwt.event.logical.shared.SelectionHandler;
  37 import com.google.gwt.http.client.URL;
  38 import com.google.gwt.user.client.DOM;
  39 import com.google.gwt.user.client.Event;
  40 import com.google.gwt.user.client.History;
  41 import com.google.gwt.user.client.ui.Tree;
  42 import com.google.gwt.user.client.ui.TreeItem;
  43
  44 /**
  45  * @author kman
  46  */
  47 public class PopupTree extends Tree {
  48
  49         private FolderContextMenu menu;
  50
  51         private Images images;
  52
  53         private boolean ctrlKeyPressed = false;
  54
  55         private boolean leftClicked = false;
  56
  57         private boolean rightClicked = false;
  58
  59         private TreeItem treeSelectedItem = null;
  60
  61         public PopupTree(Images theImages) {
  62                 super(theImages);
  63                 images = theImages;
  64                 sinkEvents(Event.ONCONTEXTMENU);
  65                 sinkEvents(Event.ONMOUSEUP);
  66 //              sinkEvents(Event.ONMOUSEDOWN);
  67
  68                 addSelectionHandler(new SelectionHandler<TreeItem>() {
  69
  70                         @Override
  71                         public void onSelection(SelectionEvent<TreeItem> event) {
  72                                 TreeItem item = event.getSelectedItem();
  73                                 processItemSelected(item, true);
  74
  75                                 String path = GSS.get().getApiPath() + GSS.get().getCurrentUserResource().getUsername()+ "/";
  76
  77 //                              case: Trash is selected
  78                                 if(GSS.get().getFolders().isTrash(item)){
  79                                         TrashResource currentObject = (TrashResource) GSS.get().getFolders().getCurrent().getUserObject();
  80                                         String finalUri = currentObject.getUri().substring(path.lastIndexOf("/")+1);
  81                                         History.newItem("Files/"+finalUri);
  82                                 }
  83 //                              case: Other's shared option is selected
  84                                 else if (GSS.get().getFolders().getCurrent().getUserObject() instanceof OthersResource){
  85                                         String currentPartTrimmed = DisplayHelper.trim(item.getText());
  86                                         String finalUri = URL.encodeComponent("Files/"+path.substring(path.lastIndexOf("/")+1) + currentPartTrimmed);
  87
  88                                         History.newItem(finalUri);
  89                                 }
  90 //                              case: expand Other's shared to folder below
  91                                 else if(GSS.get().getFolders().getCurrent().getUserObject() instanceof OtherUserResource){
  92                                         OtherUserResource currentObject = (OtherUserResource) GSS.get().getFolders().getCurrent().getUserObject();
  93                                         String finalUri = URL.encodeComponent("others/"+ currentObject.getName());
  94                                         History.newItem(finalUri);
  95                                 }
  96 //                              case: my shared is selected
  97                                 else if(GSS.get().getFolders().getCurrent().getUserObject() instanceof SharedResource){
  98                                         SharedResource currentObject = (SharedResource) GSS.get().getFolders().getCurrent().getUserObject();
  99                                         String finalUri = currentObject.getUri().substring(path.lastIndexOf("/")+1);
 100                                         History.newItem("Files/"+finalUri);
 101                                 }
 102
 103 //                              case: home folders are selected
 104                                 else{
 105                                         FolderResource currentObject = (FolderResource) GSS.get().getFolders().getCurrent().getUserObject();
 106                                         String parentUri = currentObject.getParentURI();
 107                                         if(parentUri == null){
 108                                                 if(containsTrash(GSS.get().getFolders().getCurrent())){
 109                                                         String finalUri = constructPartialPath(GSS.get().getFolders().getCurrent());
 110                                                         History.newItem("trash/"+finalUri);
 111                                                 }else{
 112                                                         String nonEncodedUri = "Files/" + currentObject.getName();
 113
 114                                                         History.newItem(URL.encode(nonEncodedUri));
 115                                                 }
 116                                         } else if(containsSharedFolder(GSS.get().getFolders().getCurrent())){
 117                                                 String finalUri = constructPartialPath(GSS.get().getFolders().getCurrent());
 118                                                 History.newItem("shared/"+finalUri);
 119                                         }else if(containsSharedFolder(GSS.get().getFolders().getCurrent())){
 120                                                 String finalUri = constructPartialPath(GSS.get().getFolders().getCurrent());
 121                                                 History.newItem("other's/"+finalUri);
 122                                         }
 123                                         else{
 124                                                 String uri = "Files"+ parentUri.substring(path.lastIndexOf("/")) + URL.encode(currentObject.getName());
 125                                                 History.newItem(uri);
 126                                         }
 127                                 }
 128                         }
 129
 130
 131                 });
 132
 133                 addOpenHandler(new OpenHandler<TreeItem>() {
 134
 135                         @Override
 136                         public void onOpen(OpenEvent<TreeItem> event) {
 137                                 TreeItem item = event.getTarget();
 138                                 if (item != null && item.getState())
 139                                         GSS.get().getFolders().update(item);
 140
 141                         }
 142                 });
 143                 addHandler(new ContextMenuHandler() {
 144
 145                         @Override
 146                         public void onContextMenu(ContextMenuEvent event) {
 147                                 TreeItem item = getSelectedItem();
 148                                 if (item != null) {
 149                                         int left = item.getAbsoluteLeft() + 40;
 150                                         int top = item.getAbsoluteTop() + 20;
 151                                         showPopup(left, top);
 152                                 }
 153
 154                         }
 155                 }, ContextMenuEvent.getType());
 156                 // DOM.setStyleAttribute(getElement(), "position", "static");
 157
 158         }
 159
 160         @Override
 161         public void onBrowserEvent(Event event) {
 162                 if (DOM.eventGetType(event) == Event.ONCLICK)
 163                         return;
 164
 165                 switch (DOM.eventGetType(event)) {
 166                         case Event.ONKEYDOWN:
 167                                 int key = DOM.eventGetKeyCode(event);
 168                                 if (key == KeyCodes.KEY_CTRL)
 169                                         ctrlKeyPressed = true;
 170                                 break;
 171
 172                         case Event.ONKEYUP:
 173                                 key = DOM.eventGetKeyCode(event);
 174                                 if (key == KeyCodes.KEY_CTRL)
 175                                         ctrlKeyPressed = false;
 176                                 break;
 177
 178                         case Event.ONMOUSEDOWN:
 179                                 if (DOM.eventGetButton(event) == NativeEvent.BUTTON_RIGHT)
 180                                         rightClicked = true;
 181                                 else if (DOM.eventGetButton(event) == NativeEvent.BUTTON_LEFT)
 182                                         leftClicked = true;
 183                                 break;
 184
 185                         case Event.ONMOUSEUP:
 186                                 if (DOM.eventGetButton(event) == NativeEvent.BUTTON_RIGHT)
 187                                         rightClicked = false;
 188                                 else if (DOM.eventGetButton(event) == NativeEvent.BUTTON_LEFT)
 189                                         leftClicked = false;
 190                                 break;
 191                 }
 192
 193                 super.onBrowserEvent(event);
 194         }
 195
 196         protected void showPopup(final int x, final int y) {
 197                 if (treeSelectedItem == null)
 198                         return;
 199                 if (menu != null)
 200                         menu.hide();
 201                 menu = new FolderContextMenu(images);
 202                 menu.setPopupPosition(x, y);
 203                 menu.show();
 204         }
 205
 206         public void processItemSelected(TreeItem item, boolean fireEvents) {
 207
 208                 if (GSS.get().getCurrentSelection() == null || !GSS.get().getCurrentSelection().equals(item.getUserObject()))
 209                         GSS.get().setCurrentSelection(item.getUserObject());
 210                 if (!GSS.get().isFileListShowing())
 211                         GSS.get().showFileList();
 212
 213                 // refresh Others Shared Node
 214                 if (GSS.get().getFolders().isOthersShared(item)) {
 215                         GSS.get().getFolders().update(item);
 216                         GSS.get().showFileList();
 217                 }
 218                 // refresh Others Shared User Node
 219 //               else if(GSS.get().getFolders().isOthersSharedItem(item) &&
 220 //               item.getUserObject() instanceof UserDTO)
 221 //               GSS.get().getFolders().update(item);
 222
 223                 if (!item.equals(treeSelectedItem))
 224                         processSelection(item);
 225                 if (rightClicked) {
 226                         rightClicked = false;
 227                         int left = item.getAbsoluteLeft() + 40;
 228                         int top = item.getAbsoluteTop() + 20;
 229                         showPopup(left, top);
 230                 } else if (leftClicked && ctrlKeyPressed) {
 231                         leftClicked = false;
 232                         ctrlKeyPressed = false;
 233                         int left = item.getAbsoluteLeft() + 40;
 234                         int top = item.getAbsoluteTop() + 20;
 235                         showPopup(left, top);
 236                 }
 237         }
 238
 239         public void clearSelection() {
 240                 if (treeSelectedItem != null)
 241                         ((DnDTreeItem) treeSelectedItem).getContent().removeStyleName("gss-SelectedRow");
 242                 // treeSelectedItem.getWidget().removeStyleName("gss-SelectedRow");
 243
 244                 treeSelectedItem = null;
 245                 setSelectedItem(null, true);
 246                 GSS.get().setCurrentSelection(null);
 247         }
 248
 249         private void processSelection(TreeItem item) {
 250                 if (treeSelectedItem != null) {
 251                         GSS.get().setCurrentSelection(null);
 252                         // treeSelectedItem.getWidget().removeStyleName("gss-SelectedRow");
 253                         ((DnDTreeItem) treeSelectedItem).getContent().removeStyleName("gss-SelectedRow");
 254                         treeSelectedItem = null;
 255                         setSelectedItem(null, true);
 256                 }
 257                 treeSelectedItem = item;
 258                 setSelectedItem(item, true);
 259                 // ensureSelectedItemVisible();
 260                 if (((DnDTreeItem) item).getFolderResource() != null)
 261                         GSS.get().setCurrentSelection(((DnDTreeItem) item).getFolderResource());
 262                 if (item.getUserObject() instanceof FolderResource)
 263                         GSS.get().setCurrentSelection(item.getUserObject());
 264                 else if (item.getUserObject() instanceof OtherUserResource)
 265                         GSS.get().setCurrentSelection(item.getUserObject());
 266                 else if (GSS.get().getFolders().isTrash(item))
 267                         GSS.get().setCurrentSelection(null);
 268                 // item.getWidget().addStyleName("gss-SelectedRow");
 269                 ((DnDTreeItem) item).getContent().addStyleName("gss-SelectedRow");
 270                 // if(GSS.get().getFolders().isFileItem(item)||GSS.get().getFolders().isTrashItem(item)||GSS.get().getFolders().isMySharedItem(item))
 271                 GSS.get().showFileList(true);
 272         }
 273
 274         /**
 275          * Retrieve the selectedItem.
 276          *
 277          * @return the selectedItem
 278          */
 279         public TreeItem getTreeSelectedItem() {
 280                 return treeSelectedItem;
 281         }
 282
 283         /**
 284          * Modify the selectedItem.
 285          *
 286          * @param newSelectedItem the selectedItem to set
 287          */
 288         public void setTreeSelectedItem(TreeItem newSelectedItem) {
 289                 treeSelectedItem = newSelectedItem;
 290         }
 291
 292         /**
 293          * examine whether there is "My Shared" inside path
 294          *
 295          * @param selectedItem the selectedItem to check
 296          */
 297
 298         public boolean containsSharedFolder(TreeItem selectedItem){
 299                    TreeItem parent = selectedItem.getParentItem();
 300                    while (parent != null){
 301                       String parentItemText = parent.getText();
 302                       String parentItemTextTr = DisplayHelper.trim(parentItemText);
 303                       if(parentItemTextTr.equals("My Shared")||parentItemTextTr.equals("Other's Shared")) return true;
 304                       parent = parent.getParentItem();
 305                    }
 306                    return false;
 307         }
 308         public boolean containsTrash(TreeItem selectedItem){
 309                    TreeItem parent = selectedItem.getParentItem();
 310                    while (parent != null){
 311                       String parentItemText = parent.getText();
 312                       String parentItemTextTr = DisplayHelper.trim(parentItemText);
 313                       if(parentItemTextTr.equals("Trash")) return true;
 314                       parent = parent.getParentItem();
 315                    }
 316                    return false;
 317         }
 318
 319         /**
 320          * construct the partial path of the selected TreeItem
 321          *
 322          * @param selectedItem the selectedItem to check
 323          */
 324         public String constructPartialPath(TreeItem selectedItem){
 325            String result = DisplayHelper.trim(selectedItem.getText());
 326            TreeItem parent = selectedItem.getParentItem();
 327            while (!(DisplayHelper.trim(parent.getText()).equals("My Shared") || DisplayHelper.trim(parent.getText()).equals("Other's Shared")||DisplayHelper.trim(parent.getText()).equals("Trash"))){
 328               result = DisplayHelper.trim(parent.getText()) + "/" + result;
 329               if(result.equals("My Shared")||result.equals("Other's Shared")) return result;
 330               parent = parent.getParentItem();
 331            }
 332
 333            return result;
 334         }
 335
 336
 337 }