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<?php defined("SYSPATH") or die("No direct script access.");
/**
* Gallery - a web based photo album viewer and editor
* Copyright (C) 2000-2011 Bharat Mediratta
*
* This program 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.
*
* This program 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 this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.
*/
class Menu_Element {
public $label;
public $url;
public $css_id;
public $css_class;
public $id;
public $type;
public function __construct($type) {
$this->type = $type;
}
/**
* Set the id
* @chainable
*/
public function id($id) {
$this->id = $id;
return $this;
}
/**
* Set the label
* @chainable
*/
public function label($label) {
// Guard against developers who forget to internationalize label strings
if (!($label instanceof SafeString)) {
$label = new SafeString($label);
}
$this->label = $label;
return $this;
}
/**
* Set the url
* @chainable
*/
public function url($url) {
$this->url = $url;
return $this;
}
/**
* Set the css id
* @chainable
*/
public function css_id($css_id) {
$this->css_id = $css_id;
return $this;
}
/**
* Set the css class
* @chainable
*/
public function css_class($css_class) {
$this->css_class = $css_class;
return $this;
}
/**
* Specifiy a view for this menu item
* @chainable
*/
public function view($view) {
$this->view = $view;
return $this;
}
}
/**
* Menu element that provides a link to a new page.
*/
class Menu_Element_Link extends Menu_Element {
public function render() {
$view = new View(isset($this->view) ? $this->view : "menu_link.html");
$view->menu = $this;
return $view;
}
}
/**
* Menu element that provides an AJAX link.
*/
class Menu_Element_Ajax_Link extends Menu_Element {
public $ajax_handler;
/**
* Set the AJAX handler
* @chainable
*/
public function ajax_handler($ajax_handler) {
$this->ajax_handler = $ajax_handler;
return $this;
}
public function render() {
$view = new View(isset($this->view) ? $this->view : "menu_ajax_link.html");
$view->menu = $this;
return $view;
}
}
/**
* Menu element that provides a pop-up dialog
*/
class Menu_Element_Dialog extends Menu_Element {
public function render() {
$view = new View(isset($this->view) ? $this->view : "menu_dialog.html");
$view->menu = $this;
return $view;
}
}
/**
* Root menu or submenu
*/
class Menu_Core extends Menu_Element {
public $elements;
public $is_root = false;
/**
* Return an instance of a Menu_Element
* @chainable
*/
public static function factory($type) {
switch($type) {
case "link":
return new Menu_Element_Link($type);
case "ajax_link":
return new Menu_Element_Ajax_Link($type);
case "dialog":
return new Menu_Element_Dialog($type);
case "root":
$menu = new Menu("root");
$menu->css_class("g-menu");
return $menu;
case "submenu":
return new Menu("submenu");
default:
throw Exception("@todo UNKNOWN_MENU_TYPE");
}
}
public function __construct($type) {
parent::__construct($type);
$this->elements = array();
$this->is_root = $type == "root";
}
/**
* Add a new element to this menu
*/
public function append($menu_element) {
$this->elements[$menu_element->id] = $menu_element;
return $this;
}
/**
* Add a new element to this menu, after the specific element
*/
public function add_after($target_id, $new_menu_element) {
$copy = array();
foreach ($this->elements as $id => $menu_element) {
$copy[$id] = $menu_element;
if ($id == $target_id) {
$copy[$new_menu_element->id] = $new_menu_element;
}
}
$this->elements = $copy;
return $this;
}
/**
* Add a new element to this menu, before the specific element
*/
public function add_before($target_id, $new_menu_element) {
$copy = array();
foreach ($this->elements as $id => $menu_element) {
if ($id == $target_id) {
$copy[$new_menu_element->id] = $new_menu_element;
}
$copy[$id] = $menu_element;
}
$this->elements = $copy;
return $this;
}
/**
* Remove an element from the menu
*/
public function remove($target_id) {
unset($this->elements[$target_id]);
}
/**
* Retrieve a Menu_Element by id
*/
public function &get($id) {
if (array_key_exists($id, $this->elements)) {
return $this->elements[$id];
}
$null = null;
return $null;
}
public function is_empty() {
foreach ($this->elements as $element) {
if ($element instanceof Menu) {
if (!$element->is_empty()) {
return false;
}
} else {
return false;
}
}
return true;
}
public function render() {
$view = new View(isset($this->view) ? $this->view : "menu.html");
$view->menu = $this;
return $view;
}
static function title_comparator($a, $b) {
return strnatcasecmp((string)$a->label, (string)$b->label);
}
}
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