<?php

/**
 * Backend Class for use in all Yoast plugins
 * Version 0.2
 */

if ( !class_exists( 'Yoast_GA_Plugin_Admin' ) ) {
	class Yoast_GA_Plugin_Admin {

		var $hook = '';
		var $filename = '';
		var $longname = '';
		var $shortname = '';
		var $optionname = '';
		var $accesslvl = 'edit_users';

		function Yoast_GA_Plugin_Admin() {
			add_action( 'admin_menu', array( &$this, 'register_settings_page' ) );
			add_filter( 'plugin_action_links', array( &$this, 'add_action_link' ), 10, 2 );

			add_action( 'admin_print_scripts', array( &$this, 'config_page_scripts' ) );
			add_action( 'admin_print_styles', array( &$this, 'config_page_styles' ) );

			add_action( 'wp_dashboard_setup', array( &$this, 'widget_setup' ) );
		}

		function config_page_styles() {
			if ( isset( $_GET['page'] ) && $_GET['page'] == $this->hook ) {
				wp_enqueue_style( 'dashboard' );
				wp_enqueue_style( 'thickbox' );
				wp_enqueue_style( 'global' );
				wp_enqueue_style( 'wp-admin' );
				wp_enqueue_style( 'gawp-css', plugin_dir_url( __FILE__ ) . 'yst_plugin_tools.css' );
			}
		}

		function register_settings_page() {
			add_options_page( $this->longname, $this->shortname, $this->accesslvl, $this->hook, array( &$this, 'config_page' ) );
		}

		function plugin_options_url() {
			return admin_url( 'options-general.php?page=' . $this->hook );
		}

		/**
		 * Add a link to the settings page to the plugins list
		 */
		function add_action_link( $links, $file ) {
			static $this_plugin;
			if ( empty( $this_plugin ) ) 
				$this_plugin = 'google-analytics-for-wordpress/googleanalytics.php';
			if ( $file == $this_plugin ) {
				$settings_link = '<a href="' . $this->plugin_options_url() . '">' . __( 'Settings', 'google-analytics-for-wordpress' ) . '</a>';
				array_unshift( $links, $settings_link );
			}
			return $links;
		}

		function config_page() {

		}

		function config_page_scripts() {
			if ( isset( $_GET['page'] ) && $_GET['page'] == $this->hook ) {
				wp_enqueue_script( 'postbox' );
				wp_enqueue_script( 'dashboard' );
				wp_enqueue_script( 'thickbox' );
				wp_enqueue_script( 'media-upload' );
				wp_enqueue_script( 'jquery-chosen', GAWP_URL . 'js/chosen.jquery.min.js', array( 'jquery' ) );
				wp_enqueue_style( 'jquery-chosen-css', GAWP_URL . 'js/chosen.css' );
			}
		}

		/**
		 * Create a Checkbox input field
		 */
		function checkbox( $id ) {
			$options = get_option( $this->optionname );
			$checked = false;
			if ( isset( $options[$id] ) && $options[$id] == 1 )
				$checked = true;
			return '<input type="checkbox" id="' . $id . '" name="' . $id . '"' . checked( $checked, true, false ) . '/>';
		}

		/**
		 * Create a Text input field
		 */
		function textinput( $id ) {
			$options = get_option( $this->optionname );
			$val     = '';
			if ( isset( $options[$id] ) )
				$val = $options[$id];
			return '<input class="text" type="text" id="' . $id . '" name="' . $id . '" size="30" value="' . $val . '"/>';
		}

		/**
		 * Create a dropdown field
		 */
		function select( $id, $options, $multiple = false ) {
			$opt    = get_option( $this->optionname );
			$output = '<select class="select" name="' . $id . '" id="' . $id . '">';
			foreach ( $options as $val => $name ) {
				$sel = '';
				if ( $opt[$id] == $val )
					$sel = ' selected="selected"';
				if ( $name == '' )
					$name = $val;
				$output .= '<option value="' . $val . '"' . $sel . '>' . $name . '</option>';
			}
			$output .= '</select>';
			return $output;
		}

		/**
		 * Create a potbox widget
		 */
		function postbox( $id, $title, $content ) {
			?>
        <div id="<?php echo $id; ?>" class="postbox">
            <div class="handlediv" title="Click to toggle"><br/></div>
            <h3 class="hndle"><span><?php echo $title; ?></span></h3>

            <div class="inside">
				<?php echo $content; ?>
            </div>
        </div>
		<?php
		}

		/**
		 * Create a form table from an array of rows
		 */
		function form_table( $rows ) {
			$content = '<table class="form-table">';
			$i       = 1;
			foreach ( $rows as $row ) {
				$class = '';
				if ( $i > 1 ) {
					$class .= 'yst_row';
				}
				if ( $i % 2 == 0 ) {
					$class .= ' even';
				}
				$content .= '<tr id="' . $row['id'] . '_row" class="' . $class . '"><th valign="top" scrope="row">';
				if ( isset( $row['id'] ) && $row['id'] != '' )
					$content .= '<label for="' . $row['id'] . '">' . $row['label'] . ':</label>';
				else
					$content .= $row['label'];
				$content .= '</th><td valign="top">';
				$content .= $row['content'];
				$content .= '</td></tr>';
				if ( isset( $row['desc'] ) && !empty( $row['desc'] ) ) {
					$content .= '<tr class="' . $class . '"><td colspan="2" class="yst_desc"><small>' . $row['desc'] . '</small></td></tr>';
				}

				$i++;
			}
			$content .= '</table>';
			return $content;
		}

		/**
		 * Create a "plugin like" box.
		 */
		function plugin_like( $hook = '' ) {
			if ( empty( $hook ) ) {
				$hook = $this->hook;
			}
			$content = '<p>' . __( 'Why not do any or all of the following:', 'google-analytics-for-wordpress' ) . '</p>';
			$content .= '<ul>';
			$content .= '<li><a href="' . $this->homepage . '">' . __( 'Link to it so other folks can find out about it.', 'google-analytics-for-wordpress' ) . '</a></li>';
			$content .= '<li><a href="http://wordpress.org/extend/plugins/' . $hook . '/">' . __( 'Give it a 5 star rating on WordPress.org.', 'google-analytics-for-wordpress' ) . '</a></li>';
			$content .= '<li><a href="http://wordpress.org/extend/plugins/' . $hook . '/">' . __( 'Let other people know that it works with your WordPress setup.', 'google-analytics-for-wordpress' ) . '</a></li>';
			$content .= '</ul>';
			$this->postbox( $hook . 'like', __( 'Like this plugin?', 'google-analytics-for-wordpress' ), $content );
		}

		function text_limit( $text, $limit, $finish = ' [&hellip;]' ) {
			if ( strlen( $text ) > $limit ) {
				$text = substr( $text, 0, $limit );
				$text = substr( $text, 0, -( strlen( strrchr( $text, ' ' ) ) ) );
				$text .= $finish;
			}
			return $text;
		}

	}
}

