org.onecmdb.ui.gwt.toolkit.client.view.tree.ChangeTreeRootTree.java Source code

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Here is the source code for org.onecmdb.ui.gwt.toolkit.client.view.tree.ChangeTreeRootTree.java

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/*
 * OneCMDB, an open source configuration management project.
 * Copyright 2007, Lokomo Systems AB, and individual contributors
 * as indicated by the @authors tag. See the copyright.txt in the
 * distribution for a full listing of individual contributors.
 *
 * This is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation; either version 2.1 of
 * the License, or (at your option) any later version.
 *
 * This software is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this software; if not, write to the Free
 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
 */
package org.onecmdb.ui.gwt.toolkit.client.view.tree;

import org.onecmdb.ui.gwt.toolkit.client.control.tree.ITreeControl;

import com.google.gwt.user.client.rpc.AsyncCallback;
import com.google.gwt.user.client.ui.Label;
import com.google.gwt.user.client.ui.Tree;
import com.google.gwt.user.client.ui.TreeItem;

/**
 * Used to insert one tree into another tree.
 *
 */
public class ChangeTreeRootTree extends CITreeWidget {

    private TreeItem triggerItem;

    public ChangeTreeRootTree(Tree tree, ITreeControl ctrl) {
        super();
        this.tree = tree;
        this.control = ctrl;
        this.tree.addTreeListener(this);
    }

    public void setTriggerItem(TreeItem listCIItem) {
        this.triggerItem = listCIItem;

    }

    public void onTreeItemSelected(TreeItem item) {
        if (item.getUserObject() != null) {
            super.onTreeItemSelected(item);
        }
    }

    public void onTreeItemStateChanged(TreeItem item) {
        if (item.equals(triggerItem)) {
            // Load root object....
            loadRootObject(item);
            return;
        }
        if (item.getUserObject() != null) {
            super.onTreeItemStateChanged(item);
        }
    }

    protected void loadRootObject(final TreeItem item) {
        control.getRootObject(new AsyncCallback() {

            public void onFailure(Throwable caught) {
                item.removeItems();
                item.addItem(new TreeItem(new Label("ERROR: " + caught.getMessage())));
            }

            public void onSuccess(Object result) {
                item.removeItems();
                if (result instanceof Object[]) {
                    Object objects[] = (Object[]) result;
                    for (int i = 0; i < objects.length; i++) {
                        TreeItem childItem = newTreeItem(objects[i], false);
                        item.addItem(childItem);
                    }
                } else {
                    TreeItem childItem = newTreeItem(result, false);
                    item.addItem(childItem);
                }
            }
        });
    }
}