code.grnet.gr Git - pithos/blob - src/gr/ebs/gss/client/PopupTree.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;
  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
  26 import com.google.gwt.user.client.DOM;
  27 import com.google.gwt.user.client.Event;
  28 import com.google.gwt.user.client.ui.KeyboardListener;
  29 import com.google.gwt.user.client.ui.Tree;
  30 import com.google.gwt.user.client.ui.TreeItem;
  31 import com.google.gwt.user.client.ui.TreeListener;
  32
  33 /**
  34  * @author kman
  35  */
  36 public class PopupTree extends Tree {
  37
  38         private FolderContextMenu menu;
  39
  40         private Images images;
  41
  42         private boolean ctrlKeyPressed = false;
  43
  44         private boolean leftClicked = false;
  45
  46         private boolean rightClicked = false;
  47
  48         private TreeItem treeSelectedItem = null;
  49
  50         public PopupTree(Images images) {
  51                 super(images);
  52                 this.images = images;
  53                 sinkEvents(Event.ONCONTEXTMENU);
  54                 sinkEvents(Event.ONMOUSEUP);
  55                 addTreeListener(new TreeListener() {
  56
  57                         public void onTreeItemSelected(TreeItem item) {
  58                                 processItemSelected(item, true);
  59
  60                         }
  61
  62                         public void onTreeItemStateChanged(TreeItem item) {
  63                                  if (!item.getState())
  64                                         return;
  65                                 GSS.get().getFolders().update(item);
  66                         }
  67                 });
  68                 //DOM.setStyleAttribute(getElement(), "position", "static");
  69
  70         }
  71
  72
  73         public void onBrowserEvent(Event event) {
  74                 if (DOM.eventGetType(event) == Event.ONCLICK) return;
  75
  76                 switch (DOM.eventGetType(event)) {
  77                         case Event.ONKEYDOWN:
  78                                 int key = DOM.eventGetKeyCode(event);
  79                                 if (key == KeyboardListener.KEY_CTRL)
  80                                         ctrlKeyPressed = true;
  81                                 break;
  82
  83                         case Event.ONKEYUP:
  84                                 key = DOM.eventGetKeyCode(event);
  85                                 if (key == KeyboardListener.KEY_CTRL)
  86                                         ctrlKeyPressed = false;
  87                                 break;
  88
  89                         case Event.ONMOUSEDOWN:
  90                                 if (DOM.eventGetButton(event) == Event.BUTTON_RIGHT)
  91                                         rightClicked = true;
  92                                 else if (DOM.eventGetButton(event) == Event.BUTTON_LEFT)
  93                                         leftClicked = true;
  94                                 break;
  95
  96                         case Event.ONMOUSEUP:
  97                                 if (DOM.eventGetButton(event) == Event.BUTTON_RIGHT)
  98                                         rightClicked = false;
  99                                 else if (DOM.eventGetButton(event) == Event.BUTTON_LEFT)
 100                                         leftClicked = false;
 101                                 break;
 102                 }
 103
 104                 super.onBrowserEvent(event);
 105         }
 106
 107         protected void showPopup(final int x, final int y) {
 108                 if (treeSelectedItem == null)
 109                         return;
 110                 if(menu != null)
 111                         menu.hide();
 112                 menu = new FolderContextMenu(images);
 113                 menu.setPopupPosition(x, y);
 114                 menu.show();
 115         }
 116
 117         void processItemSelected(TreeItem item, boolean fireEvents) {
 118
 119                 if(GSS.get().getCurrentSelection() == null || !GSS.get().getCurrentSelection().equals(item.getUserObject()))
 120                         GSS.get().setCurrentSelection(item.getUserObject());
 121                 if(!GSS.get().isFileListShowing())
 122                         GSS.get().showFileList();
 123
 124                 //refresh Others Shared Node
 125                 if(GSS.get().getFolders().isOthersShared(item)){
 126                         GSS.get().getFolders().update(item);
 127                         GSS.get().showFileList();
 128                 }
 129                 //refresh Others Shared User Node
 130                 //else if(GSS.get().getFolders().isOthersSharedItem(item) && item.getUserObject() instanceof UserDTO)
 131                         //GSS.get().getFolders().update(item);
 132
 133                 if (!item.equals(treeSelectedItem))
 134                         processSelection(item);
 135                 if (rightClicked) {
 136                         int left = item.getAbsoluteLeft() + 40;
 137                         int top = item.getAbsoluteTop() + 20;
 138                         showPopup(left, top);
 139                 } else if (leftClicked && ctrlKeyPressed) {
 140                         int left = item.getAbsoluteLeft() + 40;
 141                         int top = item.getAbsoluteTop() + 20;
 142                         showPopup(left, top);
 143                 }
 144         }
 145
 146         public void clearSelection(){
 147                 if (treeSelectedItem != null)
 148                         treeSelectedItem.getWidget().removeStyleName("gss-SelectedRow");
 149                 treeSelectedItem = null;
 150                 setSelectedItem(null, true);
 151                 GSS.get().setCurrentSelection(null);
 152         }
 153
 154         private void processSelection(TreeItem item) {
 155                 if (treeSelectedItem != null) {
 156                         GSS.get().setCurrentSelection(null);
 157                         treeSelectedItem.getWidget().removeStyleName("gss-SelectedRow");
 158
 159                         treeSelectedItem = null;
 160                         setSelectedItem(null, true);
 161                 }
 162                 treeSelectedItem = item;
 163                 setSelectedItem(item, true);
 164                 //ensureSelectedItemVisible();
 165                 if(((DnDTreeItem)item).getFolderResource() != null)
 166                         GSS.get().setCurrentSelection(((DnDTreeItem)item).getFolderResource());
 167                 if (item.getUserObject() instanceof FolderResource)
 168                         GSS.get().setCurrentSelection(item.getUserObject());
 169                 else if(item.getUserObject() instanceof OtherUserResource)
 170                         GSS.get().setCurrentSelection(item.getUserObject());
 171                 else if(GSS.get().getFolders().isTrash(item))
 172                         GSS.get().setCurrentSelection(null);
 173                 item.getWidget().addStyleName("gss-SelectedRow");
 174                 //if(GSS.get().getFolders().isFileItem(item)||GSS.get().getFolders().isTrashItem(item)||GSS.get().getFolders().isMySharedItem(item))
 175                         GSS.get().showFileList(true);
 176         }
 177
 178         /**
 179          * Retrieve the selectedItem.
 180          *
 181          * @return the selectedItem
 182          */
 183         public TreeItem getTreeSelectedItem() {
 184                 return treeSelectedItem;
 185         }
 186
 187         /**
 188          * Modify the selectedItem.
 189          *
 190          * @param treeSelectedItem the selectedItem to set
 191          */
 192         public void setTreeSelectedItem(TreeItem newSelectedItem) {
 193                 treeSelectedItem = newSelectedItem;
 194         }
 195
 196 }