dagsplug/plug_post_thumbs.php

<?php

if (!class_exists("plug_post_thumbs")) {
	class plug_post_thumbs {	
		function plug_post_thumbs($ns) {
			$this->title = __("Admin post thumbs","dagsopt");
			$this->pluginname = $ns->pluginname;
			$this->file = $ns->file;
			$this->ns = $ns;
			add_image_size( 'admin-list-thumb', get_option($this->pluginname.'_post_thumbs_width',100 ), get_option($this->pluginname.'_post_thumbs_height',100 ), false );


			add_theme_support( 'post-thumbnails' ); 

			
		}
		function start(){
 			add_filter('manage_posts_columns',  array(&$this,'tcb_add_post_thumbnail_column'), 5);
			add_filter('manage_pages_columns',  array(&$this,'tcb_add_post_thumbnail_column'), 5);
			add_action('manage_posts_custom_column', array(&$this,'tcb_display_post_thumbnail_column'), 5, 2);
			add_action('manage_pages_custom_column', array(&$this,'tcb_display_post_thumbnail_column'), 5, 2);
	
			}
	 
	 
	 
 
			function tcb_add_post_thumbnail_column($cols){
			  $cols['tcb_post_thumb'] = __('Featured','dagsopt');
			  return $cols;
			}

 

			 function tcb_display_post_thumbnail_column($col, $id){
			  switch($col){
				case 'tcb_post_thumb':
				  if( function_exists('the_post_thumbnail') )
					echo the_post_thumbnail( 'admin-list-thumb' );
				  else
					echo 'Not supported in theme';
				  break;
			  }
			}

				 
		function Option($pre){
			update_option ( $pre.'_width', $_POST [ $pre.'_width' ] );
			update_option ( $pre.'_height', $_POST [ $pre.'_height' ] );
	
 		}
 
	 	function admin_line($pre){
		  ?>
			<table>
			<tr><td><?php echo(__("Width:","dagsopt")) ?></td><td><input type="text" name="<?php echo( $pre.'_width' ) ?>" value="<?php echo( get_option( $pre.'_width',100 ) ) ?>"></td></tr>
			<tr><td><?php echo(__("Height:","dagsopt")) ?></td><td><input type="text" name="<?php echo( $pre.'_height' ) ?>" value="<?php echo( get_option( $pre.'_height',100 ) ) ?>"></td></tr>
			</table>		  
		 
		  <?php  
		}	
	}

/*
function example_dashboard_widget_function() {
	echo "Hello World, I'm a great Dashboard Widget";
} 
function example_add_dashboard_widgets() {
	wp_add_dashboard_widget('example_dashboard_widget', 'Example Dashboard Widget', 'example_dashboard_widget_function');	
} 
add_action('wp_dashboard_setup', 'example_add_dashboard_widgets' );
*/

	global $plug_post_thumbs;
	$plug_post_thumbs = new plug_post_thumbs($this);		
	$this->dagsopt['plug_post_thumbs'] = $plug_post_thumbs;
				
}