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/* 
 * BSD 2-Clause License
 * 
 * Copyright (c) 2022, LK Test Solutions GmbH
 * 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 THE COPYRIGHT HOLDERS AND CONTRIBUTORS "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 THE COPYRIGHT HOLDER 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. 
 */
package org.opentdk.gui.controls;

import java.util.Iterator;
import java.util.Stack;

import javafx.scene.control.TreeItem;

/**
 * Iterates over a TreeTable and adds values to a stack.
 * 
 * @author FME (LK Test Solutions)
 */
public class TreeTableIterator implements Iterator> {

	private final Stack> stack = new Stack<>();
	
	public TreeTableIterator(TreeItem root) {
		stack.push(root);
	}
	
	@Override
	public boolean hasNext() {
		return !stack.isEmpty(); 
	}

	@Override
	public TreeItem next() {
		TreeItem nextItem = stack.pop();
		nextItem.getChildren().forEach(stack::push);
		
		return nextItem;
	}

}