Synnefo » Pithos Web Client

/*

 * Copyright 2011-2012 GRNET S.A. All rights reserved.

 *

 * Redistribution and use in source and binary forms, with or

 * without modification, are permitted provided that the following

 * conditions are met:

 *

 *   1. Redistributions of source code must retain the above

 *      copyright notice, this list of conditions and the following

 *      disclaimer.

 *

 *   2. Redistributions in binary form must reproduce the above

 *      copyright notice, this list of conditions and the following

 *      disclaimer in the documentation and/or other materials

 *      provided with the distribution.

 *

 * THIS SOFTWARE IS PROVIDED BY GRNET S.A. ``AS IS'' AND ANY EXPRESS

 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED

 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR

 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GRNET S.A OR

 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,

 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT

 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF

 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED

 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT

 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN

 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE

 * POSSIBILITY OF SUCH DAMAGE.

 *

 * The views and conclusions contained in the software and

 * documentation are those of the authors and should not be

 * interpreted as representing official policies, either expressed

 * or implied, of GRNET S.A.

 */

package gr.grnet.pithos.web.client.grouptree;

import gr.grnet.pithos.web.client.FolderContextMenu;

import gr.grnet.pithos.web.client.TreeView;

import gr.grnet.pithos.web.client.foldertree.Folder;

import com.google.gwt.core.client.GWT;

import com.google.gwt.resources.client.ImageResource;

import com.google.gwt.resources.client.ImageResource.ImageOptions;

import com.google.gwt.safehtml.client.SafeHtmlTemplates;

import com.google.gwt.safehtml.shared.SafeHtml;

import com.google.gwt.user.cellview.client.CellTree;

import com.google.gwt.user.cellview.client.HasKeyboardSelectionPolicy.KeyboardSelectionPolicy;

import com.google.gwt.user.cellview.client.TreeNode;

import com.google.gwt.user.client.ui.Composite;

import com.google.gwt.user.client.ui.Tree;

public class GroupTreeView extends Composite implements TreeView {

    public void updateChildren(Group group) {

        TreeNode root = ((CellTree) getWidget()).getRootTreeNode();

        if (group != null)

                updateChildren(root, group);

        else {

                root.setChildOpen(0, false, true);

                root.setChildOpen(0, true, true);

        }

    }

    private void updateChildren(TreeNode node, Group group) {

        for (int i=0; i<node.getChildCount(); i++) {

            if (group.equals(node.getChildValue(i))) {

                node.setChildOpen(i, false, true);

                node.setChildOpen(i, true, true);

            }

            else {

                if (node.isChildOpen(i)) {

                        TreeNode n = node.setChildOpen(i, true);

                        updateChildren(n, group);

                }        

            }

        }

    }

    static interface BasicResources extends CellTree.Resources {

        @Override

                @ImageOptions(flipRtl = true)

        @Source("gr/grnet/pithos/web/client/cellTreeClosedItem.png")

        ImageResource cellTreeClosedItem();

        @Override

                @ImageOptions(flipRtl = true)

        @Source("gr/grnet/pithos/web/client/cellTreeLoadingBasic.gif")

        ImageResource cellTreeLoading();

        @Override

                @ImageOptions(flipRtl = true)

        @Source("gr/grnet/pithos/web/client/cellTreeOpenItem.png")

        ImageResource cellTreeOpenItem();

        @Override

                @Source({"gr/grnet/pithos/web/client/PithosCellTreeBasic.css"})

        CellTree.Style cellTreeStyle();

    }

    public static interface Images extends Tree.Resources, FolderContextMenu.Images {

        @Source("gr/grnet/pithos/resources/groups22.png")

        ImageResource groups();

        @Source("gr/grnet/pithos/resources/groups22.png")

        public ImageResource group();

        @Source("gr/grnet/pithos/resources/edit_user.png")

        ImageResource user();

    }

    static Images images = GWT.create(Images.class);

    static interface Templates extends SafeHtmlTemplates {

        public Templates INSTANCE = GWT.create(Templates.class);

        @Template("<span>{0}</span>")

        public SafeHtml nameSpan(String name);

      }

    private GroupTreeViewModel model;

    public GroupTreeView(GroupTreeViewModel viewModel) {

        this.model = viewModel;

        /*

         * Create the tree using the model. We use <code>null</code> as the default

         * value of the root node. The default value will be passed to

         * CustomTreeModel#getNodeInfo();

         */

        CellTree.Resources res = GWT.create(BasicResources.class);

        CellTree tree = new CellTree(model, null, res);

        tree.setKeyboardSelectionPolicy(KeyboardSelectionPolicy.ENABLED);

        initWidget(tree);

    }

    public void updateGroupNode(Group group) {

            model.updateGroupNode(group);

            updateChildren(group);

    }

        @Override

        public Folder getSelection() {

                // TODO Auto-generated method stub

                return null;

        }

        public Object getSelected() {

                return model.getSelectedObject();

        }

}