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