cc.alcina.framework.gwt.client.widget.TreeNodeWalker.java Source code

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Here is the source code for cc.alcina.framework.gwt.client.widget.TreeNodeWalker.java

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/* 
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not
 * use this file except in compliance with the License. You may obtain a copy of
 * the License at
 * 
 * http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 * License for the specific language governing permissions and limitations under
 * the License.
 */
package cc.alcina.framework.gwt.client.widget;

import java.util.Stack;

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

import cc.alcina.framework.common.client.util.Callback;

@SuppressWarnings("unchecked")
/**
 *
 * @author Nick Reddel
 */
public class TreeNodeWalker {
    public void walk(Tree tree, Callback callback) {
        Stack<TreeItem> items = new Stack<TreeItem>();
        int itemCount = tree.getItemCount();
        for (int i = 0; i < itemCount; i++) {
            items.push(tree.getItem(i));
        }
        while (!items.isEmpty()) {
            TreeItem pop = items.pop();
            callback.apply(pop);
            for (int i = 0; i < pop.getChildCount(); i++) {
                items.push(pop.getChild(i));
            }
        }
    }

    public void walk(TreeItem item, Callback callback) {
        Stack<TreeItem> items = new Stack<TreeItem>();
        items.push(item);
        while (!items.isEmpty()) {
            TreeItem pop = items.pop();
            callback.apply(pop);
            for (int i = 0; i < pop.getChildCount(); i++) {
                items.push(pop.getChild(i));
            }
        }
    }
}