<?php
/**
 * Plugin Name: OptionTree
 * Plugin URI:  http://wp.envato.com
 * Description: Theme Options UI Builder for WordPress. A simple way to create & save Theme Options and Meta Boxes for free or premium themes.
 * Version:     2.1.4
 * Author:      Derek Herman
 * Author URI:  http://valendesigns.com
 * License:     GPLv3
 */

/**
 * This is the OptionTree loader class.
 *
 * @package   OptionTree
 * @author    Derek Herman <derek@valendesigns.com>
 * @copyright Copyright (c) 2013, Derek Herman
 */
if ( ! class_exists( 'OT_Loader' ) ) {

  class OT_Loader {
    
    /**
     * PHP5 constructor method.
     *
     * This method loads other methods of the class.
     *
     * @return    void
     *
     * @access    public
     * @since     2.0
     */
    public function __construct() {
      
      /* load languages */
      $this->load_languages();
      
      /* load OptionTree */
	  $this->load_option_tree();
      
    }
    
    /**
     * Load the languages before everything else.
     *
     * @return    void
     *
     * @access    private
     * @since     2.1.3
     */
    private function load_languages() {
    
      /**
       * A quick check to see if we're in plugin mode.
       *
       * @since     2.1.3
       */
      define( 'OT_PLUGIN_MODE', strpos( dirname( __FILE__ ), 'plugins/' . basename( dirname( __FILE__ ) ) ) !== false ? true : false );
      
      /**
       * Path to the languages directory. 
       *
       * This path will be relative in plugin mode and absolute in theme mode.
       *
       * @since     2.0.10
       */
      define( 'OT_LANG_DIR', dirname( plugin_basename( __FILE__ ) ) . '/languages/' );

      /* load the text domain  */
      if ( OT_PLUGIN_MODE ) {
      
        add_action( 'plugins_loaded', array( $this, 'load_textdomain' ) );
        
      } else {
      
        add_action( 'after_setup_theme', array( $this, 'load_textdomain' ) );
        
      }
      
    }
    
    /**
     * Load the text domain.
     *
     * @return    void
     *
     * @access    private
     * @since     2.0
     */
    public function load_textdomain() {
    
      if ( OT_PLUGIN_MODE ) {
      
        load_plugin_textdomain( 'option-tree', false, OT_LANG_DIR );
        
      } else {
      
        load_theme_textdomain( 'option-tree', OT_LANG_DIR . 'theme-mode' );
        
      }
      
    }
    
    /** 
     * Load OptionTree on the 'after_setup_theme' action. Then filters will 
     * be availble to the theme, and not only when in Theme Mode.
     *
     * @return    void
     *
     * @access    public
     * @since     2.1.2
     */
    public function load_option_tree() {
    
      /* setup the constants */
      $this->constants();
      
      /* include the required admin files */
      $this->admin_includes();
      
      /* include the required files */
      $this->includes();
      
      /* hook into WordPress */
      $this->hooks();
      
    }

    /**
     * Constants
     *
     * Defines the constants for use within OptionTree. Constants 
     * are prefixed with 'OT_' to avoid any naming collisions.
     *
     * @return    void
     *
     * @access    private
     * @since     2.0
     */
    private function constants() {
      
      /**
       * Current Version number.
       */
      define( 'OT_VERSION', '2.1.4' );
      
      /**
       * For developers: Allow Unfiltered HTML in all the textareas.
       *
       * Run a filter and set to true if you want all the
       * users to be able to post anything in the textareas.
       * WARNING: This opens a security hole for low level users
       * to be able to post malicious scripts, you've been warned.
       *
       * @since     2.0
       */
      define( 'OT_ALLOW_UNFILTERED_HTML', apply_filters( 'ot_allow_unfiltered_html', false ) );
      
      /**
       * For developers: Theme mode.
       *
       * Run a filter and set to true to enable OptionTree theme mode.
       * You must have this files parent directory inside of 
       * your themes root directory. As well, you must include 
       * a reference to this file in your themes functions.php.
       *
       * @since     2.0
       */
		define( 'OT_THEME_MODE', apply_filters( 'ot_theme_mode', true ) );
      
      /**
       * For developers: Child Theme mode. TODO document
       *
       * Run a filter and set to true to enable OptionTree child theme mode.
       * You must have this files parent directory inside of 
       * your themes root directory. As well, you must include 
       * a reference to this file in your themes functions.php.
       *
       * @since     2.0.15
       */
      define( 'OT_CHILD_THEME_MODE', apply_filters( 'ot_child_theme_mode', false ) );
      
      /**
       * For developers: Show Pages.
       *
       * Run a filter and set to false if you don't want to load the
       * settings & documentation pages in the admin area of WordPress.
       *
       * @since     2.0
       */
      define( 'OT_SHOW_PAGES', apply_filters( 'ot_show_pages', true ) );
      
      /**
       * For developers: Show Theme Options UI Builder
       *
       * Run a filter and set to false if you want to hide the
       * Theme Options UI page in the admin area of WordPress.
       *
       * @since     2.1
       */
      define( 'OT_SHOW_OPTIONS_UI', apply_filters( 'ot_show_options_ui', true ) );
      
      /**
       * For developers: Hide Settings Import
       *
       * Run a filter and set to false if you want to hide the
       * Settings Import options on the Import page.
       *
       * @since     2.1
       */
      define( 'OT_SHOW_SETTINGS_IMPORT', apply_filters( 'ot_show_settings_import', true ) );
      
      /**
       * For developers: Hide Settings Export
       *
       * Run a filter and set to false if you want to hide the
       * Settings Import options on the Import page.
       *
       * @since     2.1
       */
      define( 'OT_SHOW_SETTINGS_EXPORT', apply_filters( 'ot_show_settings_export', true ) );
      
      /**
       * For developers: Show New Layout.
       *
       * Run a filter and set to false if you don't want to show the
       * "New Layout" section at the top of the theme options page.
       *
       * @since     2.0.10
       */
      define( 'OT_SHOW_NEW_LAYOUT', apply_filters( 'ot_show_new_layout', true ) );
      
      /**
       * For developers: Show Documentation
       *
       * Run a filter and set to false if you want to hide the Documentation.
       *
       * @since     2.1
       */
      define( 'OT_SHOW_DOCS', apply_filters( 'ot_show_docs', true ) );
      
      /**
       * For developers: Custom Theme Option page
       *
       * Run a filter and set to false if you want to hide the OptionTree 
       * Theme Option page and build your own.
       *
       * @since     2.1
       */
      define( 'OT_USE_THEME_OPTIONS', apply_filters( 'ot_use_theme_options', true ) );
      
      /**
       * For developers: Meta Boxes.
       *
       * Run a filter and set to false to keep OptionTree from
       * loading the meta box resources.
       *
       * @since     2.0
       */
      define( 'OT_META_BOXES', apply_filters( 'ot_meta_boxes', true ) );
      
      /**
       * Check if in theme mode.
       *
       * If OT_THEME_MODE and OT_CHILD_THEME_MODE is false, set the 
       * directory path & URL like any other plugin. Otherwise, use 
       * the parent or child themes root directory. 
       *
       * @since     2.0
       */
      if ( false == OT_THEME_MODE && false == OT_CHILD_THEME_MODE ) {
        define( 'OT_DIR', plugin_dir_path( __FILE__ ) );
        define( 'OT_URL', plugin_dir_url( __FILE__ ) );
      } else {
        if ( true == OT_CHILD_THEME_MODE ) {
          define( 'OT_DIR', trailingslashit( get_stylesheet_directory() ) . trailingslashit( basename( dirname( __FILE__ ) ) ) );
          define( 'OT_URL', trailingslashit( get_stylesheet_directory_uri() ) . trailingslashit( basename( dirname( __FILE__ ) ) ) );
        } else {
          define( 'OT_DIR', trailingslashit( get_template_directory() ) . trailingslashit( basename( dirname( __FILE__ ) ) ) );
          define( 'OT_URL', trailingslashit( get_template_directory_uri() ) . trailingslashit( basename( dirname( __FILE__ ) ) ) );
        }
      }
      
      /**
       * Template directory URI for the current theme.
       *
       * @since     2.1
       */
      if ( true == OT_CHILD_THEME_MODE ) {
        define( 'OT_THEME_URL', get_stylesheet_directory_uri() );
      } else {
        define( 'OT_THEME_URL', get_template_directory_uri() );
      }
      
    }
    
    /**
     * Include admin files
     *
     * These functions are included on admin pages only.
     *
     * @return    void
     *
     * @access    private
     * @since     2.0
     */
    private function admin_includes() {
      
      /* exit early if we're not on an admin page */
      if ( ! is_admin() )
        return false;
      
      /* global include files */
      $files = array( 
        'ot-functions-admin',
        'ot-functions-option-types',
        'ot-functions-compat',
        'ot-settings-api'
      );
      
      /* include the meta box api */
      if ( OT_META_BOXES == true ) {
        $files[] = 'ot-meta-box-api';
      }
      
      /* include the settings & docs pages */
      if ( OT_SHOW_PAGES == true ) {
        $files[] = 'ot-functions-settings-page';
        $files[] = 'ot-functions-docs-page';
      }
      
      /* require the files */
      foreach ( $files as $file ) {
        $this->load_file( OT_DIR . "includes/{$file}.php" );
      }
      
      /* Registers the Theme Option page */
      add_action( 'init', 'ot_register_theme_options_page' );
      
      /* Registers the Settings page */
      if ( OT_SHOW_PAGES == true ) {
        add_action( 'init', 'ot_register_settings_page' );
      }
      
    }
    
    /**
     * Include front-end files
     *
     * These functions are included on every page load 
     * incase other plugins need to access them.
     *
     * @return    void
     *
     * @access    private
     * @since     2.0
     */
    private function includes() {
    
      $files = array( 
        'ot-functions',
        'ot-functions-deprecated'
      );

      /* require the files */
      foreach ( $files as $file ) {
        $this->load_file( OT_DIR . "includes/{$file}.php" );
      }
      
    }
    
    /**
     * Execute the WordPress Hooks
     *
     * @return    void
     *
     * @access    public
     * @since     2.0
     */
    private function hooks() {

      /* load the Meta Box assets */
      if ( OT_META_BOXES == true ) {
      
        /* add scripts for metaboxes to post-new.php & post.php */
        add_action( 'admin_print_scripts-post-new.php', 'ot_admin_scripts', 11 );
        add_action( 'admin_print_scripts-post.php', 'ot_admin_scripts', 11 );
              
        /* add styles for metaboxes to post-new.php & post.php */
        add_action( 'admin_print_styles-post-new.php', 'ot_admin_styles', 11 );
        add_action( 'admin_print_styles-post.php', 'ot_admin_styles', 11 );
      
      }
      
      /* Adds the Theme Option page to the admin bar */
      add_action( 'admin_bar_menu', 'ot_register_theme_options_admin_bar_menu', 999 );
      
      /* prepares the after save do_action */
      add_action( 'admin_init', 'ot_after_theme_options_save', 1 );
      
      /* default settings */
      add_action( 'admin_init', 'ot_default_settings', 2 );
      
      /* add xml to upload filetypes array */
      add_action( 'admin_init', 'ot_add_xml_to_upload_filetypes', 3 );
      
      /* import */
      add_action( 'admin_init', 'ot_import', 4 );
      
      /* export */
      add_action( 'admin_init', 'ot_export', 5 );
      
      /* save settings */
      add_action( 'admin_init', 'ot_save_settings', 6 );
      
      /* save layouts */
      add_action( 'admin_init', 'ot_modify_layouts', 7 );
      
      /* create media post */
      add_action( 'admin_init', 'ot_create_media_post', 8 );
      
      /* global CSS */
      add_action( 'admin_head', array( $this, 'global_admin_css' ) );
      
      /* dynamic front-end CSS */
      add_action( 'wp_enqueue_scripts', 'ot_load_dynamic_css', 999 );

      /* insert theme CSS dynamically */
      add_action( 'ot_after_theme_options_save', 'ot_save_css' );
      
      /* AJAX call to create a new section */
      add_action( 'wp_ajax_add_section', array( $this, 'add_section' ) );
      
      /* AJAX call to create a new setting */
      add_action( 'wp_ajax_add_setting', array( $this, 'add_setting' ) );
      
      /* AJAX call to create a new contextual help */
      add_action( 'wp_ajax_add_the_contextual_help', array( $this, 'add_the_contextual_help' ) );
      
      /* AJAX call to create a new choice */
      add_action( 'wp_ajax_add_choice', array( $this, 'add_choice' ) );
      
      /* AJAX call to create a new list item setting */
      add_action( 'wp_ajax_add_list_item_setting', array( $this, 'add_list_item_setting' ) );
      
      /* AJAX call to create a new layout */
      add_action( 'wp_ajax_add_layout', array( $this, 'add_layout' ) );
      
      /* AJAX call to create a new list item */
      add_action( 'wp_ajax_add_list_item', array( $this, 'add_list_item' ) );
      
      /* Modify the media uploader button */
      add_filter( 'gettext', array( $this, 'change_image_button' ), 10, 3 );
      
    }
    
    /**
     * Load a file
     *
     * @return    void
     *
     * @access    private
     * @since     2.0.15
     */
    private function load_file( $file ){
      
      include_once( $file );
      
    }
    
    /**
     * Adds the global CSS to fix the menu icon.
     */
    public function global_admin_css() {
      echo '
      <style>
        #adminmenu #toplevel_page_ot-settings .wp-menu-image img { padding: 5px 0px 1px 6px !important; }
      </style>
      ';
    }
    
    /**
     * AJAX utility function for adding a new section.
     */
    public function add_section() {
      echo ot_sections_view( 'option_tree_settings[sections]', $_REQUEST['count'] );
      die();
    }
    
    /**
     * AJAX utility function for adding a new setting.
     */
    public function add_setting() {
      echo ot_settings_view( $_REQUEST['name'], $_REQUEST['count'] );
      die();
    }
    
    /**
     * AJAX utility function for adding a new list item setting.
     */
    public function add_list_item_setting() {
      echo ot_settings_view( $_REQUEST['name'] . '[settings]', $_REQUEST['count'] );
      die();
    }
    
    /**
     * AJAX utility function for adding new contextual help content.
     */
    public function add_the_contextual_help() {
      echo ot_contextual_help_view( $_REQUEST['name'], $_REQUEST['count'] );
      die();
    }
    
    /**
     * AJAX utility function for adding a new choice.
     */
    public function add_choice() {
      echo ot_choices_view( $_REQUEST['name'], $_REQUEST['count'] );
      die();
    }
    
    /**
     * AJAX utility function for adding a new layout.
     */
    public function add_layout() {
      echo ot_layout_view( $_REQUEST['count'] );
      die();
    }
    
    /**
     * AJAX utility function for adding a new list item.
     */
    public function add_list_item() {
      ot_list_item_view( $_REQUEST['name'], $_REQUEST['count'], array(), $_REQUEST['post_id'], $_REQUEST['get_option'], unserialize( ot_decode( $_REQUEST['settings'] ) ), $_REQUEST['type'] );
      die();
    }
    
    /**
     * Filters the media uploader button.
     *
     * @return    string
     *
     * @access    public
     * @since     2.1
     */
    public function change_image_button( $translation, $text, $domain ) {
      global $pagenow;
    
      if ( $pagenow == 'themes.php' && 'default' == $domain && 'Insert into post' == $text ) {
        
        // Once is enough.
        remove_filter( 'gettext', array( $this, 'ot_change_image_button' ) );
        return 'Send to OptionTree';
        
      }
      
      return $translation;
      
    }
    
  }
  
  /**
   * Instantiate the OptionTree loader class.
   *
   * @since     2.0
   */
  $ot_loader = new OT_Loader();

}

/* End of file ot-loader.php */
/* Location: ./ot-loader.php */