1 <?php
  2 
  3 /*
  4  * This file is part of the Icybee package.
  5  *
  6  * (c) Olivier Laviale <olivier.laviale@gmail.com>
  7  *
  8  * For the full copyright and license information, please view the LICENSE
  9  * file that was distributed with this source code.
 10  */
 11 
 12 namespace Icybee\Modules\Pages;
 13 
 14 use Brickrouge\Element;
 15 use Brickrouge\ElementIsEmpty;
 16 
 17 class NavigationBranchElement extends Element
 18 {
 19     protected $page;
 20 
 21     static public function markup_navigation_leaf(array $args, $patron, $template)
 22     {
 23         global $core;
 24 
 25         $page = $core->request->context->page;
 26 
 27         return new static($page);
 28     }
 29 
 30     public function __construct(Page $page, array $attributes=array())
 31     {
 32         $this->page = $page;
 33 
 34         parent::__construct
 35         (
 36             'div', $attributes + array
 37             (
 38                 'class' => 'nav-branch'
 39             )
 40         );
 41     }
 42 
 43     protected function build_blueprint($page, $parent_id)
 44     {
 45         global $core;
 46 
 47         $trail = array();
 48         $p = $page;
 49 
 50         while ($p)
 51         {
 52             $trail[$p->nid] = $p->nid;
 53 
 54             $p = $p->parent;
 55         }
 56 
 57         $blueprint = $core->models['pages']->blueprint($this->page->siteid);
 58 
 59         $build_blueprint = function($parent_id, $max_depth) use (&$build_blueprint, $blueprint, $trail)
 60         {
 61             if (empty($blueprint->children[$parent_id]))
 62             {
 63                 return;
 64             }
 65 
 66             $children = array();
 67 
 68             foreach ($blueprint->children[$parent_id] as $nid)
 69             {
 70                 $page_blueprint = $blueprint->index[$nid];
 71 
 72                 if (!$page_blueprint->is_online || $page_blueprint->is_navigation_excluded || $page_blueprint->pattern)
 73                 {
 74                     continue;
 75                 }
 76 
 77                 $page_blueprint = clone $page_blueprint;
 78 
 79                 unset($page_blueprint->parent);
 80                 $page_blueprint->children = array();
 81 
 82                 if (isset($trail[$nid]) && $page_blueprint->depth < $max_depth)
 83                 {
 84                     $page_blueprint->children = $build_blueprint($nid, $max_depth);
 85                 }
 86 
 87                 $children[] = $page_blueprint;
 88             }
 89 
 90             return $children;
 91         };
 92 
 93         return $build_blueprint($parent_id, 2);
 94     }
 95 
 96     protected function render_inner_html()
 97     {
 98         global $core;
 99 
100         $page = $this->page;
101         $parent = $this->page;
102 
103         while ($parent->parent)
104         {
105             $parent = $parent->parent;
106         }
107 
108         $parent_id = $parent->nid;
109 
110         #
111 
112         $tree_blueprint = $this->build_blueprint($page, $parent_id);
113 
114         if (!$tree_blueprint)
115         {
116             throw new ElementIsEmpty;
117         }
118 
119         new NavigationBranchElement\AlterBlueprintEvent($this, $tree_blueprint, $page, $parent_id);
120 
121         $ids = array();
122 
123         $collect_ids = function(array $blueprint) use(&$collect_ids, &$ids)
124         {
125             foreach ($blueprint as $page_blueprint)
126             {
127                 $ids[] = $page_blueprint->nid;
128 
129                 if ($page_blueprint->children)
130                 {
131                     $collect_ids($page_blueprint->children);
132                 }
133             }
134         };
135 
136         $html = '<div class="nav-branch-header"><h5><a href="' . \Brickrouge\escape($parent->url) . '">' . \Brickrouge\escape($parent->label) . '</a></h5></div>';
137 
138         if ($tree_blueprint)
139         {
140             $collect_ids($tree_blueprint);
141 
142             $pages = $core->models['pages']->find($ids);
143             $html .= '<div class="nav-branch-content">' . $this->render_page_recursive($tree_blueprint, $pages, $parent->depth + 1, 0) . '</div>';
144         }
145 
146         return $html;
147     }
148 
149     protected function render_page_recursive(array $children, $pages, $depth, $relative_depth)
150     {
151         $html = '';
152 
153         foreach ($children as $blueprint_child)
154         {
155             $child = $pages[$blueprint_child->nid];
156 
157             $html .= '<li class="' . $child->css_class('active trail') . '"><a href="' . \Brickrouge\escape($child->url) . '">' . \Brickrouge\escape($child->label) . '</a>';
158 
159             if ($blueprint_child->children)
160             {
161                 $html .= $this->render_page_recursive($blueprint_child->children, $pages, $depth + 1, $relative_depth + 1);
162             }
163 
164             $html .= '</li>';
165         }
166 
167         if ($html)
168         {
169             return <<<EOT
170 <ul class="nav nav-depth-$depth nav-relative-depth-$relative_depth">$html</ul>
171 EOT;
172         }
173     }
174 }
175 
176 namespace Icybee\Modules\Pages\NavigationBranchElement;
177 
178 /**
179  * Event class for the event `Icybee\Modules\Pages\NavigationBranchElement::alter_blueprint`.
180  */
181 class AlterBlueprintEvent extends \ICanBoogie\Event
182 {
183     /**
184      * Reference to the blueprint of the navigation branch.
185      *
186      * @var \Icybee\Modules\Pages\Blueprint
187      */
188     public $blueprint;
189 
190     /**
191      * Page where the navigation branch is displayed.
192      *
193      * @var \Icybee\Modules\Pages\Page
194      */
195     public $page;
196 
197     /**
198      * Identifier of the parent of the branch.
199      *
200      * @var int
201      */
202     public $parent_id;
203 
204     /**
205      * The event is constructed with the type `alter_blueprint`.
206      *
207      * @param \Icybee\Modules\Pages\NavigationBranchElement $target
208      * @param \Icybee\Modules\Pages\Blueprint $blueprint
209      * @param \Icybee\Modules\Pages\Page $page
210      * @param int $parent_id
211      */
212     public function __construct(\Icybee\Modules\Pages\NavigationBranchElement $target, array &$blueprint, \Icybee\Modules\Pages\Page $page, $parent_id)
213     {
214         $this->blueprint = &$blueprint;
215         $this->page = $page;
216         $this->parent_id = $parent_id;
217 
218         parent::__construct($target, 'alter_blueprint');
219     }
220 }

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