<?php if ( ! defined( 'OT_VERSION') ) exit( 'No direct script access allowed' );

/**

 * OptionTree Settings API

 *

 * This class loads all the methods and helpers specific to a Settings page.

 *

 * @package   OptionTree

 * @author    Derek Herman <derek@valendesigns.com>

 * @copyright Copyright (c) 2012, Derek Herman

 */

if ( ! class_exists( 'OT_Settings' ) ) {

  class OT_Settings {

    /* the options array */

    private $options;

    /* hooks for targeting admin pages */

    private $page_hook;

    /**

     * Constructor

     *

     * @param     array     An array of options

     * @return    void

     *

     * @access    public

     * @since     2.0

     */

    public function __construct( $args ) {

      $this->options = $args;

      /* return early if not viewing an admin page or no options */

      if ( ! is_admin() || ! is_array( $this->options ) )

        return false;

      /* load everything */

      $this->hooks();

    }

    /**

     * Execute the WordPress Hooks

     *

     * @return    void

     *

     * @access    public

     * @since     2.0

     */

    public function hooks() {

      /* add pages & menu items */

      add_action( 'admin_menu', array( &$this, 'add_page' ) );

      /* register sections */

      add_action( 'admin_init', array( &$this, 'add_sections' ) );

      /* register settings */

      add_action( 'admin_init', array( &$this, 'add_settings' ) );

      /* reset options */

      add_action( 'admin_init', array( &$this, 'reset_options' ), 10 );

      /* initialize settings */

      add_action( 'admin_init', array( &$this, 'initialize_settings' ), 11 );

    }

    /**

     * Loads each admin page

     *

     * @return    void

     *

     * @access    public

     * @since     2.0

     */

    public function add_page() {

      /* loop through options */

      foreach( (array) $this->options as $option ) {

        /* loop through pages */

        foreach( (array) $this->get_pages( $option ) as $page ) {

          /* load page in WP top level menu */

          if ( ! isset( $page['parent_slug'] ) || empty( $page['parent_slug'] ) ) {

            $page_hook = add_menu_page( 

              $page['page_title'], 

              $page['menu_title'], 

              $page['capability'], 

              $page['menu_slug'], 

              array( &$this, 'display_page' ), 

              $page['icon_url'],

              $page['position'] 

            );

          /* load page in WP sub menu */

          } else {

            $page_hook = add_submenu_page( 

              $page['parent_slug'], 

              $page['page_title'], 

              $page['menu_title'], 

              $page['capability'], 

              $page['menu_slug'], 

              array( &$this, 'display_page' ) 

            );

          }

          /* only load if not a hidden page */

          if ( ! isset( $page['hidden_page'] ) ) {

            /* associate $page_hook with page id */

            $this->page_hook[$page['id']] = $page_hook;

            /* add scripts */

            add_action( 'admin_print_scripts-' . $page_hook, array( &$this, 'scripts' ) );

            /* add styles */

            add_action( 'admin_print_styles-' . $page_hook, array( &$this, 'styles' ) );

            /* add contextual help */

            add_action( 'load-' . $page_hook, array( &$this, 'help' ) );

          }

        }

      }

      return false;

    }

    /**

     * Loads the scripts

     *

     * @return    void

     *

     * @access    public

     * @since     2.0

     */

    public function scripts() {

      ot_admin_scripts();

    }

    /**

     * Loads the styles

     *

     * @return    void

     *

     * @access    public

     * @since     2.0

     */

    public function styles() {

      ot_admin_styles();

    }

    /**

     * Loads the contextual help for each page

     *

     * @return    void

     *

     * @access    public

     * @since     2.0

     */

    public function help() {

      $screen = get_current_screen();

      /* loop through options */

      foreach( (array) $this->options as $option ) {

        /* loop through pages */

        foreach( (array) $this->get_pages( $option ) as $page ) {

          /* verify page */

          if ( ! isset( $page['hidden_page'] ) && $screen->id == $this->page_hook[$page['id']] ) {

            /* set up the help tabs */

            if ( ! empty( $page['contextual_help']['content'] ) ) {

              foreach( $page['contextual_help']['content'] as $contextual_help ) {

                $screen->add_help_tab( 

                  array(

                    'id'      => esc_attr( $contextual_help['id'] ),

                    'title'   => esc_attr( $contextual_help['title'] ),

                    'content' => htmlspecialchars_decode( $contextual_help['content'] ),

                  )

                );

              }

            }

            /* set up the help sidebar */

            if ( ! empty( $page['contextual_help']['sidebar'] ) ) {

              $screen->set_help_sidebar( htmlspecialchars_decode( $page['contextual_help']['sidebar'] ) );

            }

          }

        }

      }

      return false;

    }

    /**

     * Loads the content for each page

     *

     * @return    string

     *

     * @access    public

     * @since     2.0

     */

    public function display_page() {

      $screen = get_current_screen();

      /* loop through settings */

      foreach( (array) $this->options as $option ) {

        /* loop through pages */

        foreach( (array) $this->get_pages( $option ) as $page ) {

          /* verify page */

          if ( ! isset( $page['hidden_page'] ) && $screen->id == $this->page_hook[$page['id']] ) {

            $show_buttons = isset( $page['show_buttons'] ) && $page['show_buttons'] == false ? false : true;

            /* update active layout content */

            if ( isset( $_REQUEST['settings-updated'] ) && $_REQUEST['settings-updated'] == 'true' ) {

              $layouts = get_option( 'option_tree_layouts' );

              /* has active layout */

              if ( isset( $layouts['active_layout'] ) ) {

                $option_tree = get_option( $option['id'] );

                $layouts[$layouts['active_layout']] = base64_encode( serialize( $option_tree ) );

                update_option( 'option_tree_layouts', $layouts );

              }

            }

            echo '<div class="wrap settings-wrap" id ="page-' . $page['id'] . '">';

              screen_icon( ( isset( $page['screen_icon'] ) ? $page['screen_icon'] : 'options-general' ) );

              echo '<h2>' . $page['page_title'] . '</h2>';

              echo ot_alert_message( $page );

              settings_errors( 'option-tree' );

              /* Header */

              echo '<div id="option-tree-header-wrap">';

                echo '<ul id="option-tree-header">';

                  echo '<li id="option-tree-logo"><a href="http://wordpress.org/extend/plugins/option-tree/" target="_blank">OptionTree</a></li>';

                  echo '<li id="option-tree-version"><span>Version ' . OT_VERSION . '</span></li>';

                echo '</ul>';

                /* layouts form */

                if ( $page['id'] == 'ot_theme_options' && OT_SHOW_NEW_LAYOUT == true )

                  ot_theme_options_layouts_form();

              echo '</div>';

            /* remove forms on the custom settings pages */

            if ( $show_buttons ) {

              echo '<form action="options.php" method="post" id="option-tree-settings-api">';

                settings_fields( $option['id'] );

            } else {

              echo '<div id="option-tree-settings-api">';

            }

                /* Sub Header */

                echo '<div id="option-tree-sub-header">';

                if ( $show_buttons )

                  echo '<button class="option-tree-ui-button grey right">' . $page['button_text'] . '</button>';

                echo '</div>';

                /* Navigation */

  		          echo '<div class="ui-tabs">';

                /* check for sections */

                if ( isset( $page['sections'] ) && count( $page['sections'] ) > 0 ) {

                  echo '<ul class="ui-tabs-nav">';

                  /* loop through page sections */

                  foreach( (array) $page['sections'] as $section ) {

                    echo '<li id="tab_' . $section['id'] . '"><a href="#section_' . $section['id'] . '">' . $section['title'] . '</a></li>';

                  }

                  echo '</ul>';

                }

                  /* sections */

                  echo '<div id="poststuff" class="metabox-holder">';

                    echo '<div id="post-body">';

                      echo '<div id="post-body-content">';

                        $this->do_settings_sections( $_GET['page'] );

                      echo '</div>';

    		            echo '</div>';

                  echo '</div>';

                  echo '<div class="clear"></div>';

                echo '</div>';

              /* buttons */

              if ( $show_buttons ) {

                echo '<div class="option-tree-ui-buttons">';

                  echo '<button class="option-tree-ui-button grey right">' . $page['button_text'] . '</button>';

                echo '</div>';

              }

              echo $show_buttons ? '</form>' : '</div>';

              /* reset button */

              if ( $show_buttons ) {

                echo '<form method="post" action="' . str_replace( '&settings-updated=true', '', $_SERVER["REQUEST_URI"] ) . '">';

                  /* form nonce */

                  wp_nonce_field( 'option_tree_reset_form', 'option_tree_reset_nonce' );

                  echo '<input type="hidden" name="action" value="reset" />';

                  echo '<button type="submit" class="option-tree-ui-button red light left reset-settings" title="' . __( 'Reset Options', 'option-tree' ) . '">' . __( 'Reset Options', 'option-tree' ) . '</button>';

                echo '</form>';

              }

            echo '</div>';

          }

        }

      }

      return false;

    }

    /**

     * Adds sections to the page

     *

     * @return    void

     *

     * @access    public

     * @since     2.0

     */

    public function add_sections() {

      /* loop through options */

      foreach( (array) $this->options as $option ) {

        /* loop through pages */

        foreach( (array) $this->get_pages( $option ) as $page ) {

          /* loop through page sections */

          foreach( (array) $this->get_sections( $page ) as $section ) {

            /* add each section */

            add_settings_section( 

              $section['id'], 

              $section['title'], 

              array( &$this, 'display_section' ), 

              $page['menu_slug'] 

            );

          }

        }

      }

      return false;

    }

    /**

     * Callback for add_settings_section()

     *

     * @return    string

     *

     * @access    public

     * @since     2.0

     */

    public function display_section() {

      /* currently pointless */

    }

    /**

     * Add settings the the page

     *

     * @return    void

     *

     * @access    public

     * @since     2.0

     */

    public function add_settings() {

      /* loop through options */

      foreach( (array) $this->options as $option ) {

        register_setting( $option['id'], $option['id'], array ( &$this, 'sanitize_callback' ) );

        /* loop through pages */

        foreach( (array) $this->get_pages( $option ) as $page ) {

          /* loop through page settings */

          foreach( (array) $this->get_settings( $page ) as $setting ) {

            /* skip if no setting ID */

            if ( ! isset( $setting['id'] ) )

              continue;

            /* add get_option param to the array */

            $setting['get_option']  = $option['id'];

            /* add each setting */

            add_settings_field( 

              $setting['id'], 

              $setting['label'], 

              array( &$this, 'display_setting' ),