aboutsummaryrefslogtreecommitdiffstats
path: root/include/block.class.php
diff options
context:
space:
mode:
Diffstat (limited to '')
-rw-r--r--include/block.class.php214
1 files changed, 214 insertions, 0 deletions
diff --git a/include/block.class.php b/include/block.class.php
new file mode 100644
index 000000000..c40a695aa
--- /dev/null
+++ b/include/block.class.php
@@ -0,0 +1,214 @@
+<?php
+// +-----------------------------------------------------------------------+
+// | Piwigo - a PHP based picture gallery |
+// +-----------------------------------------------------------------------+
+// | Copyright(C) 2008 Piwigo Team http://piwigo.org |
+// +-----------------------------------------------------------------------+
+// | 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 |
+// | |
+// | 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, |
+// | USA. |
+// +-----------------------------------------------------------------------+
+
+class BlockManager
+{
+ protected $id;
+ protected $registered_blocks=array();
+ protected $display_blocks = array();
+
+ public function BlockManager($id)
+ {
+ $this->id = $id;
+ }
+
+ /** triggers an action that allows implementors of menu blocks to register the blocks*/
+ public function load_registered_blocks()
+ {
+ trigger_action('blockmanager_register_blocks', array(&$this) );
+ }
+
+ public function get_id()
+ {
+ return $this->id;
+ }
+
+ public function get_registered_blocks()
+ {
+ return $this->registered_blocks;
+ }
+
+ /** registers a block with this menu. usually called as a result of menubar_register_blocks action
+ * @param MenuBlock block
+ */
+ public function register_block(&$block)
+ {
+ if ( isset($this->registered_blocks[$block->get_id()] ) )
+ {
+ trigger_error("Block '".$block->get_id()."' is already registered", E_USER_WARNING);
+ return false;
+ }
+ $this->registered_blocks[$block->get_id()] = &$block;
+ return true;
+ }
+
+ /** performs one time preparation of registered blocks for display;
+ * triggers the action menubar_prepare_display where implementors can
+ * reposition or hide blocks
+ */
+ public function prepare_display()
+ {
+ global $conf;
+ $conf_id = 'blk_'.$this->id;
+ $mb_conf = isset($conf[$conf_id]) ? $conf[$conf_id] : array();
+ if ( !is_array($mb_conf) )
+ $mb_conf = @unserialize($mb_conf);
+
+ $idx = 1;
+ foreach( $this->registered_blocks as $id => $block )
+ {
+ $pos = isset( $mb_conf[$id] ) ? $mb_conf[$id] : $idx*50;
+ if ( $pos>0 )
+ {
+ $this->display_blocks[$id] = new DisplayBlock($block);
+ $this->display_blocks[$id]->set_position($pos);
+ }
+ $idx++;
+ }
+ $this->sort_blocks();
+ trigger_action( 'blockmanager_prepare_display', array(&$this) );
+ $this->sort_blocks();
+ }
+
+ /** returns true if the block whose id is hidden
+ * @param string block_id
+ */
+ public function is_hidden($block_id)
+ {
+ return isset($this->display_blocks[$block_id]) ? false : true;
+ }
+
+ public function hide_block($block_id)
+ {
+ unset( $this->display_blocks[$block_id] );
+ }
+
+ public function &get_block($block_id)
+ {
+ $tmp = null;
+ if ( isset($this->display_blocks[$block_id]) )
+ {
+ return $this->display_blocks[$block_id];
+ }
+ return $tmp;
+ }
+
+ public function set_block_position($block_id, $position)
+ {
+ if ( isset($this->display_blocks[$block_id]) )
+ {
+ $this->display_blocks[$block_id]->set_position($position);
+ }
+ }
+
+ protected function sort_blocks()
+ {
+ uasort( $this->display_blocks, array('BlockManager', 'cmp_by_position') );
+ }
+
+ static protected function cmp_by_position($a, $b)
+ {
+ return $a->get_position() - $b->get_position();
+ }
+
+ public function apply($var, $file)
+ {
+ global $template;
+
+ $template->set_filename('menubar', $file);
+ trigger_action('blockmanager_apply', array(&$this) );
+
+ foreach( $this->display_blocks as $id=>$block)
+ {
+ if (empty($block->raw_content) and empty($block->template) )
+ {
+ $this->hide_block($id);
+ }
+ }
+ $this->sort_blocks();
+ $template->assign('blocks', $this->display_blocks);
+ $template->assign_var_from_handle($var, 'menubar');
+ }
+}
+
+/**
+ * Represents a menu block registered in a Menu object.
+ */
+class RegisteredBlock
+{
+ protected $id;
+ protected $name;
+ protected $owner;
+
+ public function RegisteredBlock($id, $name, $owner)
+ {
+ $this->id = $id;
+ $this->name = $name;
+ $this->owner = $owner;
+ }
+
+ public function get_id() { return $this->id; }
+ public function get_name() { return $this->name; }
+ public function get_owner() { return $this->owner; }
+}
+
+/**
+ * Represents a menu block ready for display in the Menu object.
+ */
+class DisplayBlock
+{
+ protected $_registeredBlock;
+ protected $_position;
+
+ protected $_title;
+
+ public $data;
+ public $template;
+ public $raw_content;
+
+ public function DisplayBlock($registeredBlock)
+ {
+ $this->_registeredBlock = &$registeredBlock;
+ }
+
+ public function &get_block() { return $this->_registeredBlock; }
+
+ public function get_position() { return $this->_position; }
+ public function set_position($position)
+ {
+ $this->_position = $position;
+ }
+
+ public function get_title()
+ {
+ if (isset($this->_title))
+ return $this->_title;
+ else
+ return $this->_registeredBlock->get_name();
+ }
+
+ public function set_title($title)
+ {
+ $this->_title = $title;
+ }
+}
+
+?> \ No newline at end of file