<?php

/*

Plugin Name: Sidebar Generator

Plugin URI: http://www.getson.info

Description: This plugin generates as many sidebars as you need. Then allows you to place them on any page you wish. Version 1.1 now supports themes with multiple sidebars. 

Version: 1.1.0

Author: Kyle Getson

Author URI: http://www.kylegetson.com

Copyright (C) 2009 Kyle Robert Getson

*/



/*

Copyright (C) 2009 Kyle Robert Getson, kylegetson.com and getson.info



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 3 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, see <http://www.gnu.org/licenses/>.

*/



class sidebar_generator {

	

	public function sidebar_generator(){

		add_action('init',array('sidebar_generator','init'));

		add_action('admin_menu',array('sidebar_generator','admin_menu'));

		add_action('admin_print_scripts', array('sidebar_generator','admin_print_scripts'));

		add_action('wp_ajax_add_sidebar', array('sidebar_generator','add_sidebar') );

		add_action('wp_ajax_remove_sidebar', array('sidebar_generator','remove_sidebar') );

			

		//edit posts/pages

		add_action('edit_form_advanced', array('sidebar_generator', 'edit_form'));

		add_action('edit_page_form', array('sidebar_generator', 'edit_form'));

		

		//save posts/pages

		add_action('edit_post', array('sidebar_generator', 'save_form'));

		add_action('publish_post', array('sidebar_generator', 'save_form'));

		add_action('save_post', array('sidebar_generator', 'save_form'));

		add_action('edit_page_form', array('sidebar_generator', 'save_form'));



	}

	

	public static function init(){

		//go through each sidebar and register it

	    $sidebars = sidebar_generator::get_sidebars();

	    



	    if(is_array($sidebars)){

			foreach($sidebars as $sidebar){

				$sidebar_class = sidebar_generator::name_to_class($sidebar);

				register_sidebar(array(

					'name'=>$sidebar,

			    	'before_widget' => '<div id="%1$s" class="widget %2$s">',

		   			'after_widget' => '</div>',

		   			'before_title' => '<h4>',

					'after_title' => '</h4>',

		    	));

			}

		}

	}

	

	public static function admin_print_scripts(){

		wp_print_scripts( array( 'sack' ));

		?>

			<script>

				function add_sidebar( sidebar_name )

				{

					

					var mysack = new sack("<?php echo admin_url('admin-ajax.php'); ?>" );

				

				  	mysack.execute = 1;

				  	mysack.method = 'POST';

				  	mysack.setVar( "action", "add_sidebar" );

				  	mysack.setVar( "sidebar_name", sidebar_name );

				  	mysack.encVar( "cookie", document.cookie, false );

				  	mysack.onError = function() { alert('Ajax error. Cannot add sidebar' )};

				  	mysack.runAJAX();

					return true;

				}

				

				function remove_sidebar( sidebar_name,num )

				{

					

					var mysack = new sack("<?php echo admin_url('admin-ajax.php'); ?>" );

				

				  	mysack.execute = 1;

				  	mysack.method = 'POST';

				  	mysack.setVar( "action", "remove_sidebar" );

				  	mysack.setVar( "sidebar_name", sidebar_name );

				  	mysack.setVar( "row_number", num );

				  	mysack.encVar( "cookie", document.cookie, false );

				  	mysack.onError = function() { alert('Ajax error. Cannot add sidebar' )};

				  	mysack.runAJAX();

					//alert('hi!:::'+sidebar_name);

					return true;

				}

			</script>

		<?php

	}

	

	public function add_sidebar(){

		$sidebars = sidebar_generator::get_sidebars();

		$name = str_replace(array("\n","\r","\t"),'',$_POST['sidebar_name']);

		$id = sidebar_generator::name_to_class($name);

		if(isset($sidebars[$id])){

			die("alert('Sidebar already exists, please use a different name.')");

		}

		

		$sidebars[$id] = $name;

		sidebar_generator::update_sidebars($sidebars);

		

		$js = "

			var tbl = document.getElementById('sbg_table');

			var lastRow = tbl.rows.length;

			// if there's no header row in the table, then iteration = lastRow + 1

			var iteration = lastRow;

			var row = tbl.insertRow(lastRow);

			

			// left cell

			var cellLeft = row.insertCell(0);

			var textNode = document.createTextNode('$name');

			cellLeft.appendChild(textNode);

			

			//middle cell

			var cellLeft = row.insertCell(1);

			var textNode = document.createTextNode('$id');

			cellLeft.appendChild(textNode);

			

			//var cellLeft = row.insertCell(2);

			//var textNode = document.createTextNode('[<a href=\'javascript:void(0);\' onclick=\'return remove_sidebar_link($name);\'>Remove</a>]');

			//cellLeft.appendChild(textNode)

			

			var cellLeft = row.insertCell(2);

			removeLink = document.createElement('a');

      		linkText = document.createTextNode('remove');

			removeLink.setAttribute('onclick', 'remove_sidebar_link(\'$name\')');

			removeLink.setAttribute('href', 'javacript:void(0)');

        

      		removeLink.appendChild(linkText);

      		cellLeft.appendChild(removeLink);



			

		";

		

		

		die( "$js");

	}

	

	public function remove_sidebar(){

		$sidebars = sidebar_generator::get_sidebars();

		$name = str_replace(array("\n","\r","\t"),'',$_POST['sidebar_name']);

		$id = sidebar_generator::name_to_class($name);

		if(!isset($sidebars[$id])){

			die("alert('Sidebar does not exist.')");

		}

		$row_number = $_POST['row_number'];

		unset($sidebars[$id]);

		sidebar_generator::update_sidebars($sidebars);

		$js = "

			var tbl = document.getElementById('sbg_table');

			tbl.deleteRow($row_number)



		";

		die($js);

	}

	

	public static function admin_menu(){

		add_theme_page('Sidebars', 'Sidebars', 'manage_options', 'multiple_sidebars', array('sidebar_generator','admin_page'));

	}

	

	public function admin_page(){

		?>

		<script>

			function remove_sidebar_link(name,num){

				answer = confirm("Are you sure you want to remove " + name + "?\nThis will remove any widgets you have assigned to this sidebar.");

				if(answer){

					//alert('AJAX REMOVE');

					remove_sidebar(name,num);

				}else{

					return false;

				}

			}

			function add_sidebar_link(){

				var sidebar_name = prompt("Sidebar Name:","");

				//alert(sidebar_name);

				add_sidebar(sidebar_name);

			}

		</script>

		<div class="wrap">

			<h2>Sidebar Generator</h2>

			<p>

				The sidebar name is for your use only. It will not be visible to any of your visitors. 

				A CSS class is assigned to each of your sidebar, use this styling to customize the sidebars.

			</p>

			<br />

			<div class="add_sidebar">

				<a href="javascript:void(0);" onclick="return add_sidebar_link()" title="Add a sidebar">+ Add Sidebar</a>

			</div>

			<br />

			<table class="widefat page" id="sbg_table" style="width:600px;">

				<tr>

					<th>Name</th>

					<th>CSS class</th>

					<th>Remove</th>

				</tr>

				<?php

				$sidebars = sidebar_generator::get_sidebars();

				//$sidebars = array('bob','john','mike','asdf');

				if(is_array($sidebars) && !empty($sidebars)){

					$cnt=0;

					foreach($sidebars as $sidebar){

						$alt = ($cnt%2 == 0 ? 'alternate' : '');

				?>

				<tr class="<?php echo $alt?>">

					<td><?php echo $sidebar; ?></td>

					<td><?php echo sidebar_generator::name_to_class($sidebar); ?></td>

					<td><a href="javascript:void(0);" onclick="return remove_sidebar_link('<?php echo $sidebar; ?>',<?php echo $cnt+1; ?>);" title="Remove this sidebar">remove</a></td>

				</tr>

				<?php

						$cnt++;

					}

				}else{

					?>

					<tr>

						<td colspan="3">No Sidebars defined</td>

					</tr>

					<?php

				}

				?>

			</table>

		</div>

		<?php

	}

	

	/**

	 * for saving the pages/post

	*/

	public function save_form($post_id){

		$is_saving = @$_POST['sbg_edit'];

		if(!empty($is_saving)){

			delete_post_meta($post_id, 'sbg_selected_sidebar');

			delete_post_meta($post_id, 'sbg_selected_sidebar_replacement');

			add_post_meta($post_id, 'sbg_selected_sidebar', $_POST['sidebar_generator']);

			add_post_meta($post_id, 'sbg_selected_sidebar_replacement', $_POST['sidebar_generator_replacement']);

		}		

	}

	

	public function edit_form(){

	    global $post;

	    $post_id = $post;

	    if (is_object($post_id)) {

	    	$post_id = $post_id->ID;

	    }

	    $selected_sidebar = get_post_meta($post_id, 'sbg_selected_sidebar', true);

	    if(!is_array($selected_sidebar)){

	    	$tmp = $selected_sidebar; 

	    	$selected_sidebar = array(); 

	    	$selected_sidebar[0] = $tmp;

	    }

	    $selected_sidebar_replacement = get_post_meta($post_id, 'sbg_selected_sidebar_replacement', true);

		if(!is_array($selected_sidebar_replacement)){

	    	$tmp = $selected_sidebar_replacement; 

	    	$selected_sidebar_replacement = array(); 

	    	$selected_sidebar_replacement[0] = $tmp;

	    }

		?>

	 

	<div id='sbg-sortables' class='meta-box-sortables'>

		<div id="sbg_box" class="postbox " >

			<div class="handlediv" title="Click to toggle"><br /></div><h3 class='hndle'><span>Sidebars</span></h3>

			<div class="inside">

				<div class="sbg_container">

					<input name="sbg_edit" type="hidden" value="sbg_edit" />

					

					<p>

						Select the sidebar you wish to display on this page.<br />

						<strong>Note:</strong> You must first create the sidebar under Appearance > Sidebars.

					</p>

					<ul>

					<?php 

					global $wp_registered_sidebars;

					//var_dump($wp_registered_sidebars);		

						for($i=0;$i<1;$i++){ ?>

							<li>

							<select name="sidebar_generator[<?php echo $i?>]" style="display: none;">

								<option value="0"<?php if($selected_sidebar[$i] == ''){ echo " selected";} ?>>WP Default Sidebar</option>

							<?php

							$sidebars = $wp_registered_sidebars;// sidebar_generator::get_sidebars();

							if(is_array($sidebars) && !empty($sidebars)){

								foreach($sidebars as $sidebar){

									if($selected_sidebar[$i] == $sidebar['name']){

										echo "<option value='{$sidebar['name']}' selected>{$sidebar['name']}</option>\n";

									}else{

										echo "<option value='{$sidebar['name']}'>{$sidebar['name']}</option>\n";

									}

								}

							}

							?>

							</select>

							<select name="sidebar_generator_replacement[<?php echo $i?>]">



							<?php

							

							$sidebar_replacements = $wp_registered_sidebars;//sidebar_generator::get_sidebars();

							if(is_array($sidebar_replacements) && !empty($sidebar_replacements)){

								foreach($sidebar_replacements as $sidebar){

									if($selected_sidebar_replacement[$i] == $sidebar['name']){

										echo "<option value='{$sidebar['name']}' selected>{$sidebar['name']}</option>\n";

									}else{

										echo "<option value='{$sidebar['name']}'>{$sidebar['name']}</option>\n";

									}

								}

							}

							?>

							</select> 

							

							</li>

						<?php } ?>

					</ul>

				</div>

			</div>

		</div>

	</div>



		<?php

	}

	

	/**

	 * called by the action get_sidebar. this is what places this into the theme

	*/

	public static function get_sidebar($name="0"){

		if(!is_singular()){

			if($name != "0"){

				dynamic_sidebar($name);

			}else{

				dynamic_sidebar();

			}

			return;//dont do anything

		}

		global $wp_query;

		$post = $wp_query->get_queried_object();

		$selected_sidebar = get_post_meta($post->ID, 'sbg_selected_sidebar', true);

		$selected_sidebar_replacement = get_post_meta($post->ID, 'sbg_selected_sidebar_replacement', true);

		$did_sidebar = false;

		//this page uses a generated sidebar

		if($selected_sidebar != '' && $selected_sidebar != "0"){

			echo "\n\n<!-- begin generated sidebar -->\n";

			if(is_array($selected_sidebar) && !empty($selected_sidebar)){

				for($i=0;$i<sizeof($selected_sidebar);$i++){					

					

					if($name == "0" && $selected_sidebar[$i] == "0" &&  $selected_sidebar_replacement[$i] == "0"){

						//echo "\n\n<!-- [called $name selected {$selected_sidebar[$i]} replacement {$selected_sidebar_replacement[$i]}] -->";

						dynamic_sidebar();//default behavior

						$did_sidebar = true;

						break;

					}elseif($name == "0" && $selected_sidebar[$i] == "0"){

						//we are replacing the default sidebar with something

						//echo "\n\n<!-- [called $name selected {$selected_sidebar[$i]} replacement {$selected_sidebar_replacement[$i]}] -->";

						dynamic_sidebar($selected_sidebar_replacement[$i]);//default behavior

						$did_sidebar = true;

						break;

					}elseif($selected_sidebar[$i] == $name){

						//we are replacing this $name

						//echo "\n\n<!-- [called $name selected {$selected_sidebar[$i]} replacement {$selected_sidebar_replacement[$i]}] -->";

						$did_sidebar = true;

						dynamic_sidebar($selected_sidebar_replacement[$i]);//default behavior

						break;

					}

					//echo "<!-- called=$name selected={$selected_sidebar[$i]} replacement={$selected_sidebar_replacement[$i]} -->\n";

				}

			}

			if($did_sidebar == true){

				echo "\n<!-- end generated sidebar -->\n\n";

				return;

			}

			//go through without finding any replacements, lets just send them what they asked for

			if($name != "0"){

				dynamic_sidebar($name);

			}else{

				dynamic_sidebar();

			}

			echo "\n<!-- end generated sidebar -->\n\n";

			return;			

		}else{

			if($name != "0"){

				dynamic_sidebar($name);

			}else{

				dynamic_sidebar();

			}

		}

	}

	

	/**

	 * replaces array of sidebar names

	*/

	public static function update_sidebars($sidebar_array){

		$sidebars = update_option('sbg_sidebars',$sidebar_array);

	}	

	

	/**

	 * gets the generated sidebars

	*/

	public static function get_sidebars(){

		$sidebars = get_option('sbg_sidebars');

		return $sidebars;

	}

	public static function name_to_class($name){

		$class = str_replace(array(' ',',','.','"',"'",'/',"\\",'+','=',')','(','*','&','^','%','$','#','@','!','~','`','<','>','?','[',']','{','}','|',':',),'',$name);

		return $class;

	}

	

}

$sbg = new sidebar_generator;



function generated_dynamic_sidebar($name='0'){

	sidebar_generator::get_sidebar($name);

	return true;

}

?>