[2488] | 1 | <?php |
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| 2 | // +-----------------------------------------------------------------------+ |
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[8728] | 3 | // | Piwigo - a PHP based photo gallery | |
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[2488] | 4 | // +-----------------------------------------------------------------------+ |
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[19703] | 5 | // | Copyright(C) 2008-2013 Piwigo Team http://piwigo.org | |
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[2488] | 6 | // +-----------------------------------------------------------------------+ |
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| 7 | // | This program is free software; you can redistribute it and/or modify | |
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| 8 | // | it under the terms of the GNU General Public License as published by | |
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| 9 | // | the Free Software Foundation | |
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| 10 | // | | |
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| 11 | // | This program is distributed in the hope that it will be useful, but | |
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| 12 | // | WITHOUT ANY WARRANTY; without even the implied warranty of | |
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| 13 | // | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
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| 14 | // | General Public License for more details. | |
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| 15 | // | | |
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| 16 | // | You should have received a copy of the GNU General Public License | |
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| 17 | // | along with this program; if not, write to the Free Software | |
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| 18 | // | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, | |
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| 19 | // | USA. | |
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| 20 | // +-----------------------------------------------------------------------+ |
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| 21 | |
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[25762] | 22 | /** |
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| 23 | * @package functions\menubar |
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| 24 | */ |
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| 25 | |
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| 26 | |
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| 27 | /** |
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| 28 | * Manages a set of RegisteredBlock and DisplayBlock. |
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| 29 | */ |
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[2488] | 30 | class BlockManager |
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| 31 | { |
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[25762] | 32 | /** @var string */ |
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[2488] | 33 | protected $id; |
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[25762] | 34 | /** @var RegisteredBlock[] */ |
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| 35 | protected $registered_blocks = array(); |
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| 36 | /** @var DisplayBlock[] */ |
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[2488] | 37 | protected $display_blocks = array(); |
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| 38 | |
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[25762] | 39 | /** |
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| 40 | * @param string $id |
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| 41 | */ |
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| 42 | public function __construct($id) |
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[2488] | 43 | { |
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| 44 | $this->id = $id; |
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| 45 | } |
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| 46 | |
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[25762] | 47 | /** |
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| 48 | * Triggers a notice that allows plugins of menu blocks to register the blocks. |
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| 49 | */ |
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[2488] | 50 | public function load_registered_blocks() |
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| 51 | { |
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[25762] | 52 | trigger_action('blockmanager_register_blocks', array(&$this)); |
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[2488] | 53 | } |
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[25762] | 54 | |
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| 55 | /** |
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| 56 | * @return string |
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| 57 | */ |
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[2488] | 58 | public function get_id() |
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| 59 | { |
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| 60 | return $this->id; |
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| 61 | } |
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| 62 | |
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[25762] | 63 | /** |
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| 64 | * @return RegisteredBlock[] |
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| 65 | */ |
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[2488] | 66 | public function get_registered_blocks() |
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| 67 | { |
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| 68 | return $this->registered_blocks; |
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| 69 | } |
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| 70 | |
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[25762] | 71 | /** |
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| 72 | * Add a block with the menu. Usually called in 'blockmanager_register_blocks' event. |
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| 73 | * |
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| 74 | * @param RegisteredBlock &$block |
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| 75 | */ |
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[2488] | 76 | public function register_block(&$block) |
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| 77 | { |
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[25762] | 78 | if (isset($this->registered_blocks[$block->get_id()])) |
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[2488] | 79 | { |
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| 80 | trigger_error("Block '".$block->get_id()."' is already registered", E_USER_WARNING); |
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| 81 | return false; |
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| 82 | } |
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| 83 | $this->registered_blocks[$block->get_id()] = &$block; |
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| 84 | return true; |
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| 85 | } |
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| 86 | |
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[25762] | 87 | /** |
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| 88 | * Performs one time preparation of registered blocks for display. |
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| 89 | * Triggers 'blockmanager_prepare_display' event where plugins can |
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[2488] | 90 | * reposition or hide blocks |
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[25762] | 91 | */ |
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[2488] | 92 | public function prepare_display() |
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| 93 | { |
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| 94 | global $conf; |
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| 95 | $conf_id = 'blk_'.$this->id; |
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| 96 | $mb_conf = isset($conf[$conf_id]) ? $conf[$conf_id] : array(); |
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[25762] | 97 | if (!is_array($mb_conf)) |
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| 98 | { |
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[2488] | 99 | $mb_conf = @unserialize($mb_conf); |
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[25762] | 100 | } |
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[2488] | 101 | |
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| 102 | $idx = 1; |
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[25762] | 103 | foreach ($this->registered_blocks as $id => $block) |
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[2488] | 104 | { |
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[25762] | 105 | $pos = isset($mb_conf[$id]) ? $mb_conf[$id] : $idx*50; |
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| 106 | if ($pos>0) |
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[2488] | 107 | { |
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| 108 | $this->display_blocks[$id] = new DisplayBlock($block); |
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| 109 | $this->display_blocks[$id]->set_position($pos); |
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| 110 | } |
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| 111 | $idx++; |
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| 112 | } |
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| 113 | $this->sort_blocks(); |
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[25762] | 114 | trigger_action('blockmanager_prepare_display', array(&$this)); |
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[2488] | 115 | $this->sort_blocks(); |
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| 116 | } |
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| 117 | |
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[25762] | 118 | /** |
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| 119 | * Returns true if the block is hidden. |
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| 120 | * |
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| 121 | * @param string $block_id |
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| 122 | * @return bool |
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| 123 | */ |
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[2488] | 124 | public function is_hidden($block_id) |
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| 125 | { |
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[25762] | 126 | return !isset($this->display_blocks[$block_id]); |
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[2488] | 127 | } |
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| 128 | |
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[25762] | 129 | /** |
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| 130 | * Remove a block from the displayed blocks. |
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| 131 | * |
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| 132 | * @param string $block_id |
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| 133 | */ |
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[2488] | 134 | public function hide_block($block_id) |
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| 135 | { |
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[25762] | 136 | unset($this->display_blocks[$block_id]); |
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[2488] | 137 | } |
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| 138 | |
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[25762] | 139 | /** |
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| 140 | * Returns a visible block. |
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| 141 | * |
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| 142 | * @param string $block_id |
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| 143 | * @return &DisplayBlock|null |
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| 144 | */ |
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[2488] | 145 | public function &get_block($block_id) |
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| 146 | { |
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| 147 | $tmp = null; |
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[25762] | 148 | if (isset($this->display_blocks[$block_id])) |
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[2488] | 149 | { |
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| 150 | return $this->display_blocks[$block_id]; |
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| 151 | } |
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| 152 | return $tmp; |
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| 153 | } |
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| 154 | |
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[25762] | 155 | /** |
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| 156 | * Changes the position of a block. |
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| 157 | * |
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| 158 | * @param string $block_id |
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| 159 | * @param int $position |
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| 160 | */ |
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[2488] | 161 | public function set_block_position($block_id, $position) |
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| 162 | { |
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[25762] | 163 | if (isset($this->display_blocks[$block_id])) |
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[2488] | 164 | { |
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| 165 | $this->display_blocks[$block_id]->set_position($position); |
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| 166 | } |
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| 167 | } |
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| 168 | |
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[25762] | 169 | /** |
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| 170 | * Sorts the blocks. |
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| 171 | */ |
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[2488] | 172 | protected function sort_blocks() |
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| 173 | { |
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[25762] | 174 | uasort($this->display_blocks, array('BlockManager', 'cmp_by_position')); |
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[2488] | 175 | } |
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| 176 | |
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[25762] | 177 | /** |
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| 178 | * Callback for blocks sorting. |
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| 179 | */ |
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[2488] | 180 | static protected function cmp_by_position($a, $b) |
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| 181 | { |
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| 182 | return $a->get_position() - $b->get_position(); |
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| 183 | } |
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| 184 | |
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[25762] | 185 | /** |
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| 186 | * Parse the menu and assign the result in a template variable. |
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| 187 | * |
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| 188 | * @param string $var |
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| 189 | * @param string $file |
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| 190 | */ |
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[2488] | 191 | public function apply($var, $file) |
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| 192 | { |
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| 193 | global $template; |
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| 194 | |
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| 195 | $template->set_filename('menubar', $file); |
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| 196 | trigger_action('blockmanager_apply', array(&$this) ); |
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| 197 | |
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[25762] | 198 | foreach ($this->display_blocks as $id=>$block) |
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[2488] | 199 | { |
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[25762] | 200 | if (empty($block->raw_content) and empty($block->template)) |
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[2488] | 201 | { |
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| 202 | $this->hide_block($id); |
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| 203 | } |
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| 204 | } |
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| 205 | $this->sort_blocks(); |
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| 206 | $template->assign('blocks', $this->display_blocks); |
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| 207 | $template->assign_var_from_handle($var, 'menubar'); |
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| 208 | } |
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| 209 | } |
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| 210 | |
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[25762] | 211 | |
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[2488] | 212 | /** |
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[25762] | 213 | * Represents a menu block registered in a BlockManager object. |
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[2488] | 214 | */ |
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| 215 | class RegisteredBlock |
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| 216 | { |
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[25762] | 217 | /** @var string */ |
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[2488] | 218 | protected $id; |
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[25762] | 219 | /** @var string */ |
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[2488] | 220 | protected $name; |
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[25762] | 221 | /** @var string */ |
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[2488] | 222 | protected $owner; |
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| 223 | |
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[25762] | 224 | /** |
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| 225 | * @param string $id |
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| 226 | * @param string $name |
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| 227 | * @param string $owner |
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| 228 | */ |
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| 229 | public function __construct($id, $name, $owner) |
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[2488] | 230 | { |
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| 231 | $this->id = $id; |
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| 232 | $this->name = $name; |
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| 233 | $this->owner = $owner; |
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| 234 | } |
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| 235 | |
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[25762] | 236 | /** |
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| 237 | * @return string |
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| 238 | */ |
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| 239 | public function get_id() |
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| 240 | { |
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| 241 | return $this->id; |
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| 242 | } |
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| 243 | |
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| 244 | /** |
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| 245 | * @return string |
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| 246 | */ |
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| 247 | public function get_name() |
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| 248 | { |
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| 249 | return $this->name; |
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| 250 | } |
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| 251 | |
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| 252 | /** |
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| 253 | * @return string |
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| 254 | */ |
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| 255 | public function get_owner() |
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| 256 | { |
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| 257 | return $this->owner; |
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| 258 | } |
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[2488] | 259 | } |
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| 260 | |
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[25762] | 261 | |
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[2488] | 262 | /** |
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[25762] | 263 | * Represents a menu block ready for display in the BlockManager object. |
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[2488] | 264 | */ |
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| 265 | class DisplayBlock |
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| 266 | { |
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[25762] | 267 | /** @var RegisteredBlock */ |
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[2488] | 268 | protected $_registeredBlock; |
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[25762] | 269 | /** @var int */ |
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[2488] | 270 | protected $_position; |
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[25762] | 271 | /** @var string */ |
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[2488] | 272 | protected $_title; |
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| 273 | |
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[25762] | 274 | /** @var mixed */ |
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[2488] | 275 | public $data; |
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[25762] | 276 | /** @var string */ |
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[2488] | 277 | public $template; |
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[25762] | 278 | /** @var string */ |
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[2488] | 279 | public $raw_content; |
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| 280 | |
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[25762] | 281 | /** |
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| 282 | * @param RegisteredBlock &$block |
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| 283 | */ |
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| 284 | public function __construct($block) |
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[2488] | 285 | { |
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[25762] | 286 | $this->_registeredBlock = &$block; |
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[2488] | 287 | } |
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| 288 | |
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[25762] | 289 | /** |
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| 290 | * @return &RegisteredBlock |
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| 291 | */ |
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| 292 | public function &get_block() |
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| 293 | { |
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| 294 | return $this->_registeredBlock; |
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| 295 | } |
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[2488] | 296 | |
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[25762] | 297 | /** |
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| 298 | * @return int |
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| 299 | */ |
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| 300 | public function get_position() |
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| 301 | { |
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| 302 | return $this->_position; |
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| 303 | } |
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| 304 | |
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| 305 | /** |
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| 306 | * @param int $position |
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| 307 | */ |
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[2488] | 308 | public function set_position($position) |
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| 309 | { |
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| 310 | $this->_position = $position; |
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| 311 | } |
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| 312 | |
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[25762] | 313 | /** |
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| 314 | * @return string |
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| 315 | */ |
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[2488] | 316 | public function get_title() |
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| 317 | { |
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| 318 | if (isset($this->_title)) |
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[25762] | 319 | { |
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[2488] | 320 | return $this->_title; |
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[25762] | 321 | } |
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[2488] | 322 | else |
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[25762] | 323 | { |
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[2488] | 324 | return $this->_registeredBlock->get_name(); |
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[25762] | 325 | } |
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[2488] | 326 | } |
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| 327 | |
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[25762] | 328 | /** |
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| 329 | * @param string |
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| 330 | */ |
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[2488] | 331 | public function set_title($title) |
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| 332 | { |
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| 333 | $this->_title = $title; |
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| 334 | } |
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| 335 | } |
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| 336 | |
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| 337 | ?> |
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