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.dom.client.NativeEvent;
  27 import com.google.gwt.event.dom.client.ContextMenuEvent;
  28 import com.google.gwt.event.dom.client.ContextMenuHandler;
  29 import com.google.gwt.event.dom.client.KeyCodes;
  30 import com.google.gwt.event.logical.shared.OpenEvent;
  31 import com.google.gwt.event.logical.shared.OpenHandler;
  32 import com.google.gwt.event.logical.shared.SelectionEvent;
  33 import com.google.gwt.event.logical.shared.SelectionHandler;
  34 import com.google.gwt.user.client.DOM;
  35 import com.google.gwt.user.client.Event;
  36 import com.google.gwt.user.client.ui.Tree;
  37 import com.google.gwt.user.client.ui.TreeItem;
  38
  39 /**
  40  * @author kman
  41  */
  42 public class PopupTree extends Tree {
  43
  44         private FolderContextMenu menu;
  45
  46         private Images images;
  47
  48         private boolean ctrlKeyPressed = false;
  49
  50         private boolean leftClicked = false;
  51
  52         private boolean rightClicked = false;
  53
  54         private TreeItem treeSelectedItem = null;
  55
  56         public PopupTree(Images theImages) {
  57                 super(theImages);
  58                 images = theImages;
  59                 sinkEvents(Event.ONCONTEXTMENU);
  60                 sinkEvents(Event.ONMOUSEUP);
  61                 //sinkEvents(Event.ONMOUSEDOWN);
  62
  63                 addSelectionHandler(new SelectionHandler<TreeItem>() {
  64
  65                         @Override
  66                         public void onSelection(SelectionEvent<TreeItem> event) {
  67                                 TreeItem item = event.getSelectedItem();
  68                                 processItemSelected(item, true);
  69
  70                         }
  71                 });
  72                 addOpenHandler(new OpenHandler<TreeItem>() {
  73
  74                         @Override
  75                         public void onOpen(OpenEvent<TreeItem> event) {
  76                                 TreeItem item = event.getTarget();
  77                                 if(item != null && item.getState())
  78                                         GSS.get().getFolders().update(item);
  79
  80                         }
  81                 });
  82                 addHandler(new ContextMenuHandler() {
  83
  84                         @Override
  85                         public void onContextMenu(ContextMenuEvent event) {
  86                                 TreeItem item =getSelectedItem();
  87                                 if(item !=null){
  88                                         int left = item.getAbsoluteLeft() + 40;
  89                                         int top = item.getAbsoluteTop() + 20;
  90                                         showPopup(left, top);
  91                                 }
  92
  93                         }
  94                 }, ContextMenuEvent.getType());
  95                 //DOM.setStyleAttribute(getElement(), "position", "static");
  96
  97         }
  98
  99         @Override
 100         public void onBrowserEvent(Event event) {
 101                 if (DOM.eventGetType(event) == Event.ONCLICK) return;
 102
 103                 switch (DOM.eventGetType(event)) {
 104                         case Event.ONKEYDOWN:
 105                                 int key = DOM.eventGetKeyCode(event);
 106                                 if (key == KeyCodes.KEY_CTRL)
 107                                         ctrlKeyPressed = true;
 108                                 break;
 109
 110                         case Event.ONKEYUP:
 111                                 key = DOM.eventGetKeyCode(event);
 112                                 if (key == KeyCodes.KEY_CTRL)
 113                                         ctrlKeyPressed = false;
 114                                 break;
 115
 116                         case Event.ONMOUSEDOWN:
 117                                 if (DOM.eventGetButton(event) == NativeEvent.BUTTON_RIGHT)
 118                                         rightClicked = true;
 119                                 else if (DOM.eventGetButton(event) == NativeEvent.BUTTON_LEFT)
 120                                         leftClicked = true;
 121                                 break;
 122
 123                         case Event.ONMOUSEUP:
 124                                 if (DOM.eventGetButton(event) == NativeEvent.BUTTON_RIGHT)
 125                                         rightClicked = false;
 126                                 else if (DOM.eventGetButton(event) == NativeEvent.BUTTON_LEFT)
 127                                         leftClicked = false;
 128                                 break;
 129                 }
 130
 131                 super.onBrowserEvent(event);
 132         }
 133
 134         protected void showPopup(final int x, final int y) {
 135                 if (treeSelectedItem == null)
 136                         return;
 137                 if(menu != null)
 138                         menu.hide();
 139                 menu = new FolderContextMenu(images);
 140                 menu.setPopupPosition(x, y);
 141                 menu.show();
 142         }
 143
 144         public void processItemSelected(TreeItem item, boolean fireEvents) {
 145
 146                 if(GSS.get().getCurrentSelection() == null || !GSS.get().getCurrentSelection().equals(item.getUserObject()))
 147                         GSS.get().setCurrentSelection(item.getUserObject());
 148                 if(!GSS.get().isFileListShowing())
 149                         GSS.get().showFileList();
 150
 151                 //refresh Others Shared Node
 152                 if(GSS.get().getFolders().isOthersShared(item)){
 153                         GSS.get().getFolders().update(item);
 154                         GSS.get().showFileList();
 155                 }
 156                 //refresh Others Shared User Node
 157                 //else if(GSS.get().getFolders().isOthersSharedItem(item) && item.getUserObject() instanceof UserDTO)
 158                         //GSS.get().getFolders().update(item);
 159
 160                 if (!item.equals(treeSelectedItem))
 161                         processSelection(item);
 162                 if (rightClicked) {
 163                         rightClicked=false;
 164                         int left = item.getAbsoluteLeft() + 40;
 165                         int top = item.getAbsoluteTop() + 20;
 166                         showPopup(left, top);
 167                 } else if (leftClicked && ctrlKeyPressed) {
 168                         leftClicked=false;
 169                         ctrlKeyPressed=false;
 170                         int left = item.getAbsoluteLeft() + 40;
 171                         int top = item.getAbsoluteTop() + 20;
 172                         showPopup(left, top);
 173                 }
 174         }
 175
 176         public void clearSelection(){
 177                 if (treeSelectedItem != null)
 178                         ((DnDTreeItem)treeSelectedItem).getContent().removeStyleName("gss-SelectedRow");
 179                         //treeSelectedItem.getWidget().removeStyleName("gss-SelectedRow");
 180
 181                 treeSelectedItem = null;
 182                 setSelectedItem(null, true);
 183                 GSS.get().setCurrentSelection(null);
 184         }
 185
 186         private void processSelection(TreeItem item) {
 187                 if (treeSelectedItem != null) {
 188                         GSS.get().setCurrentSelection(null);
 189                         //treeSelectedItem.getWidget().removeStyleName("gss-SelectedRow");
 190                         ((DnDTreeItem)treeSelectedItem).getContent().removeStyleName("gss-SelectedRow");
 191                         treeSelectedItem = null;
 192                         setSelectedItem(null, true);
 193                 }
 194                 treeSelectedItem = item;
 195                 setSelectedItem(item, true);
 196                 //ensureSelectedItemVisible();
 197                 if(((DnDTreeItem)item).getFolderResource() != null)
 198                         GSS.get().setCurrentSelection(((DnDTreeItem)item).getFolderResource());
 199                 if (item.getUserObject() instanceof FolderResource)
 200                         GSS.get().setCurrentSelection(item.getUserObject());
 201                 else if(item.getUserObject() instanceof OtherUserResource)
 202                         GSS.get().setCurrentSelection(item.getUserObject());
 203                 else if(GSS.get().getFolders().isTrash(item))
 204                         GSS.get().setCurrentSelection(null);
 205                 //item.getWidget().addStyleName("gss-SelectedRow");
 206                 ((DnDTreeItem)item).getContent().addStyleName("gss-SelectedRow");
 207                 //if(GSS.get().getFolders().isFileItem(item)||GSS.get().getFolders().isTrashItem(item)||GSS.get().getFolders().isMySharedItem(item))
 208                         GSS.get().showFileList(true);
 209         }
 210
 211         /**
 212          * Retrieve the selectedItem.
 213          *
 214          * @return the selectedItem
 215          */
 216         public TreeItem getTreeSelectedItem() {
 217                 return treeSelectedItem;
 218         }
 219
 220         /**
 221          * Modify the selectedItem.
 222          *
 223          * @param newSelectedItem the selectedItem to set
 224          */
 225         public void setTreeSelectedItem(TreeItem newSelectedItem) {
 226                 treeSelectedItem = newSelectedItem;
 227         }
 228
 229
 230
 231 }