code.grnet.gr Git - pithos-web-client/blob - src/gr/grnet/pithos/web/client/foldertree/FolderTreeView.java

   1 /*
   2  * Copyright (c) 2011 Greek Research and Technology Network
   3  */
   4
   5 package gr.grnet.pithos.web.client.foldertree;
   6
   7 import com.google.gwt.cell.client.AbstractCell;
   8 import com.google.gwt.core.client.GWT;
   9 import com.google.gwt.resources.client.ClientBundle;
  10 import com.google.gwt.resources.client.ImageResource;
  11 import com.google.gwt.resources.client.ImageResource.ImageOptions;
  12 import com.google.gwt.safehtml.client.SafeHtmlTemplates;
  13 import com.google.gwt.safehtml.shared.SafeHtml;
  14 import com.google.gwt.safehtml.shared.SafeHtmlBuilder;
  15 import com.google.gwt.user.cellview.client.CellTree;
  16 import com.google.gwt.user.cellview.client.HasKeyboardSelectionPolicy.KeyboardSelectionPolicy;
  17 import com.google.gwt.user.client.Event;
  18 import com.google.gwt.user.client.ui.AbstractImagePrototype;
  19 import com.google.gwt.user.client.ui.Composite;
  20 import com.google.gwt.user.client.ui.Tree;
  21 import com.google.gwt.view.client.SelectionChangeEvent;
  22 import com.google.gwt.view.client.SelectionChangeEvent.Handler;
  23 import com.google.gwt.view.client.SingleSelectionModel;
  24 import com.google.gwt.view.client.TreeViewModel.NodeInfo;
  25 import gr.grnet.pithos.web.client.FolderContextMenu;
  26 import gr.grnet.pithos.web.client.GSS;
  27 import gwtquery.plugins.droppable.client.gwt.DragAndDropCellTree;
  28 import java.util.Iterator;
  29
  30 public class FolderTreeView extends Composite {
  31
  32     static interface BasicResources extends CellTree.Resources {
  33
  34         @ImageOptions(flipRtl = true)
  35         @Source("cellTreeClosedItem.gif")
  36         ImageResource cellTreeClosedItem();
  37
  38         @ImageOptions(flipRtl = true)
  39         @Source("cellTreeLoadingBasic.gif")
  40         ImageResource cellTreeLoading();
  41
  42         @ImageOptions(flipRtl = true)
  43         @Source("cellTreeOpenItem.gif")
  44         ImageResource cellTreeOpenItem();
  45
  46         @Source({"GssCellTreeBasic.css"})
  47         CellTree.Style cellTreeStyle();
  48     }
  49
  50     static interface Images extends ClientBundle,Tree.Resources, FolderContextMenu.Images {
  51
  52         @Source("gr/grnet/pithos/resources/folder_home.png")
  53         ImageResource home();
  54
  55         @Source("gr/grnet/pithos/resources/folder_yellow.png")
  56         ImageResource folderYellow();
  57     }
  58
  59     private static Images images = GWT.create(Images.class);
  60
  61     static interface Templates extends SafeHtmlTemplates {
  62         Templates INSTANCE = GWT.create(Templates.class);
  63
  64         @Template("<span>{0}</span>")
  65         public SafeHtml nameSpan(String name);
  66       }
  67
  68     static class FolderCell extends AbstractCell<Folder> {
  69
  70         @Override
  71         public void render(Context context, Folder folder, SafeHtmlBuilder safeHtmlBuilder) {
  72             String html = AbstractImagePrototype.create(images.folderYellow()).getHTML();
  73             safeHtmlBuilder.appendHtmlConstant(html);
  74             safeHtmlBuilder.append(Templates.INSTANCE.nameSpan(folder.getName()));
  75         }
  76     }
  77
  78
  79     private FolderTreeViewModel model;
  80
  81     public FolderTreeView(FolderTreeViewModel viewModel) {
  82         this.model = viewModel;
  83         /*
  84          * Create the tree using the model. We use <code>null</code> as the default
  85          * value of the root node. The default value will be passed to
  86          * CustomTreeModel#getNodeInfo();
  87          */
  88         CellTree.Resources res = GWT.create(BasicResources.class);
  89         DragAndDropCellTree tree = new DragAndDropCellTree(model,null, res);
  90
  91         tree.setKeyboardSelectionPolicy(KeyboardSelectionPolicy.ENABLED);
  92
  93         sinkEvents(Event.ONCONTEXTMENU);
  94         sinkEvents(Event.ONMOUSEUP);
  95         initWidget(tree);
  96     }
  97 }