<?php
/**
 *+-----------------------------------------------------------------------+
 *| MenuBar - 07 Oct 2006                                                 |
 *+-----------------------------------------------------------------------+
 *|  Diego do Nascimento Feitosa                                          |
 *|  hide@address.com                                                  |
 *|  www.dnfeitosa.com                                                    |
 *|  São Paulo/SP - Brasil                                                |
 *+-----------------------------------------------------------------------+
 *| MenuBar is free software; you can redistribute it and/or modify       |
 *| it under the terms of the GNU General Public License as published by  |
 *| the Free Software Foundation; either version 2 of the License, or     |
 *| (at your option) any later version.                                   |
 *|                                                                       |
 *| MenuBar 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     |
 *| General Public License for more details.                              |
 *|                                                                       |
 *| You should have received a copy of the GNU General Public License     |
 *| along with MenuBar; if not, write to the Free Software                |
 *| Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA              |
 *| 02111-1307  USA                                                       |
 *+-----------------------------------------------------------------------+
**/
require_once("MBFactory.inc");
class MenuBar extends GtkMenuBar {

	protected $xml;
	protected $widgets = array();
	protected $addTearoffs = true;

	public function __construct() {
		parent::__construct();
		$this->fct = MBFactory::getFactory();
	}

	public function createFromString($string) {
		$this->xml = DOMDocument::loadXML($string);
		$this->startBuilding();
	}

	public function createFromFile($file) {
		$this->xml = DOMDocument::load($file);
		$this->startBuilding();
	}

	private function startBuilding() {
		if ($this->xml->validate()) {
			$nodes = $this->xml->documentElement->childNodes;
			$this->build($this, $nodes);
		} else {
			throw new Exception("Invalid XML format.");
		}
	}

	protected function build($obj, $nodes) {
		foreach ($nodes as $node) {
			if ($node->nodeType != 1)
				continue;
			$ret = $this->buildItems($node);
			$obj->append($ret);
		}
	}

	protected function buildItems($node, $type = null) {
		$fct = $this->fct;

		if (!$type)
			$type = $node->nodeName;
		$id = $node->getAttribute("id");

		if ($type != "separator" && is_null($id)) {
			throw new Exception("Item without id");
		}

		$display = $node->getAttribute("display");
		$icon = $node->getAttribute("icon");
		$tearoff = $node->getAttribute("tearoff") == "true";

		switch ($type) {
			case "item":
				if (!is_null($display)) {
					if (!is_null($icon)) {
						$item = $fct->imageMenuItem($display);
						$image = $fct->icon($icon);
						$item->set_image($image);
					} else {
						$item = $fct->menuItem($display);
					}
				} else if (!is_null($icon)) {
					$item = $fct->imageMenuItem($icon);
				} else {
					throw new Exception("Each item should have at least an icon or display text");
				}
				$this->register($id, $item);
				return $item;

			case "separator":
				return $fct->itemSeparator();

			default:
				$menu = $fct->menu();
				if ($tearoff && $this->addTearoffs)
					$menu->append($fct->tearoff());
				$this->build($menu, $node->childNodes);

				$item = $this->buildItems($node, "item");
				$item->set_submenu($menu);

				return $item;
		}
	}

	protected function register($id, $obj) {
		if (!array_key_exists($id, $this->widgets))
			$this->widgets[$id] = $obj;
		else
			throw new Exception("There are currently a widget with the same id");
	}

	public function getWidget($id) {
		if (array_key_exists($id, $this->widgets))
			return $this->widgets[$id];
		return null;
	}

	public function addTearoffs($add) {
		$this->addTearoffs = $add;
	}
}
?>