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<?php
/**
 * @package   Options_Framework
 * @author    Devin Price <devin@wptheming.com>
 * @license   GPL-2.0+
 * @link      http://wptheming.com
 * @copyright 2010-2016 WP Theming
 */

class Options_Framework_Admin {

/**
     * Page hook for the options screen
     *
     * @since 1.7.0
     * @type string
     */
    protected $options_screen = null;

/**
     * Hook in the scripts and styles
     *
     * @since 1.7.0
     */
    public function init() {

// Gets options to load
    	$options = & Options_Framework::_optionsframework_options();

// Checks if options are available
    	if ( $options ) {

// Add the options page and menu item.
			add_action( 'admin_menu', array( $this, 'add_custom_options_page' ) );

// Add the required scripts and styles
			add_action( 'admin_enqueue_scripts', array( $this, 'enqueue_admin_styles' ) );
			add_action( 'admin_enqueue_scripts', array( $this, 'enqueue_admin_scripts' ) );

// Settings need to be registered after admin_init
			add_action( 'admin_init', array( $this, 'settings_init' ) );

// Adds options menu to the admin bar
			add_action( 'wp_before_admin_bar_render', array( $this, 'optionsframework_admin_bar' ) );

} else {
			// Display a notice if options aren't present in the theme
			add_action( 'admin_notices', array( $this, 'options_notice' ) );
			add_action( 'admin_init', array( $this, 'options_notice_ignore' ) );
		}

}

/**
     * Let's the user know that options aren't available for their theme
     */
    function options_notice() {
		global $pagenow;
        if ( !is_multisite() && ( $pagenow == 'plugins.php' || $pagenow == 'themes.php' ) ) {
			global $current_user ;
			$user_id = $current_user->ID;
			if ( ! get_user_meta($user_id, 'optionsframework_ignore_notice') ) {
				echo '<div class="updated optionsframework_setup_nag"><p>';
				printf( __('Your current theme does not have support for the Options Framework plugin.  <a href="%1$s" target="_blank">Learn More</a> | <a href="%2$s">Hide Notice</a>', 'options-framework' ), 'http://wptheming.com/options-framework-plugin', '?optionsframework_nag_ignore=0');
				echo "</p></div>";
			}
        }
	}

/**
     * Allows the user to hide the options notice
     */
	function options_notice_ignore() {
		global $current_user;
		$user_id = $current_user->ID;
		if ( isset( $_GET['optionsframework_nag_ignore'] ) && '0' == $_GET['optionsframework_nag_ignore'] ) {
			add_user_meta( $user_id, 'optionsframework_ignore_notice', 'true', true );
		}
	}

/**
     * Registers the settings
     *
     * @since 1.7.0
     */
    function settings_init() {

// Load Options Framework Settings
        $optionsframework_settings = get_option( 'optionsframework' );

// Registers the settings fields and callback
		register_setting( 'optionsframework', $optionsframework_settings['id'],  array ( $this, 'validate_options' ) );

// Displays notice after options save
		add_action( 'optionsframework_after_validate', array( $this, 'save_options_notice' ) );

}

/*
	 * Define menu options (still limited to appearance section)
	 *
	 * Examples usage:
	 *
	 * add_filter( 'optionsframework_menu', function( $menu ) {
	 *     $menu['page_title'] = 'The Options';
	 *	   $menu['menu_title'] = 'The Options';
	 *     return $menu;
	 * });
	 *
	 * @since 1.7.0
	 *
	 */
	static function menu_settings() {

$menu = array(

// Modes: submenu, menu
            'mode' => 'submenu',

// Submenu default settings
            'page_title' => __( 'Theme Options', 'options-framework'),
			'menu_title' => __('Theme Options', 'options-framework'),
			'capability' => 'edit_theme_options',
			'menu_slug' => 'options-framework',
            'parent_slug' => 'themes.php',

// Menu default settings
            'icon_url' => 'dashicons-admin-generic',
            'position' => '61'

);

return apply_filters( 'optionsframework_menu', $menu );
	}

/**
     * Add a subpage called "Theme Options" to the appearance menu.
     *
     * @since 1.7.0
     */
	function add_custom_options_page() {

$menu = $this->menu_settings();

switch( $menu['mode'] ) {

case 'menu':
            	// http://codex.wordpress.org/Function_Reference/add_menu_page
                $this->options_screen = add_menu_page(
                	$menu['page_title'],
                	$menu['menu_title'],
                	$menu['capability'],
                	$menu['menu_slug'],
                	array( $this, 'options_page' ),
                	$menu['icon_url'],
                	$menu['position']
                );
                break;

default:
            	// http://codex.wordpress.org/Function_Reference/add_submenu_page
                $this->options_screen = add_submenu_page(
                	$menu['parent_slug'],
                	$menu['page_title'],
                	$menu['menu_title'],
                	$menu['capability'],
                	$menu['menu_slug'],
                	array( $this, 'options_page' ) );
                break;
        }
	}

/**
     * Loads the required stylesheets
     *
     * @since 1.7.0
     */
	function enqueue_admin_styles( $hook ) {

if ( $this->options_screen != $hook )
	        return;

wp_enqueue_style( 'optionsframework', plugin_dir_url( dirname(__FILE__) ) . 'css/optionsframework.css', array(),  Options_Framework::VERSION );
		wp_enqueue_style( 'wp-color-picker' );
	}

/**
     * Loads the required javascript
     *
     * @since 1.7.0
     */
	function enqueue_admin_scripts( $hook ) {

if ( $this->options_screen != $hook )
	        return;

// Enqueue custom option panel JS
		wp_enqueue_script( 'options-custom', plugin_dir_url( dirname(__FILE__) ) . 'js/options-custom.js', array( 'jquery','wp-color-picker' ), Options_Framework::VERSION );

// Inline scripts from options-interface.php
		add_action( 'admin_head', array( $this, 'of_admin_head' ) );
	}

function of_admin_head() {
		// Hook to add custom scripts
		do_action( 'optionsframework_custom_scripts' );
	}

/**
     * Builds out the options panel.
     *
	 * If we were using the Settings API as it was intended we would use
	 * do_settings_sections here.  But as we don't want the settings wrapped in a table,
	 * we'll call our own custom optionsframework_fields.  See options-interface.php
	 * for specifics on how each individual field is generated.
	 *
	 * Nonces are provided using the settings_fields()
	 *
     * @since 1.7.0
     */
	 function options_page() { ?>

<?php $menu = $this->menu_settings(); ?>
		<h2><?php echo esc_html( $menu['page_title'] ); ?></h2>

<?php settings_errors( 'options-framework' ); ?>

<div id="optionsframework-metabox" class="metabox-holder">
		    <div id="optionsframework" class="postbox">
				<form action="options.php" method="post">
				<?php settings_fields( 'optionsframework' ); ?>
				<?php Options_Framework_Interface::optionsframework_fields(); /* Settings */ ?>
				<div id="optionsframework-submit">
					<input type="submit" class="button-primary" name="update" value="<?php esc_attr_e( 'Save Options', 'options-framework' ); ?>" />
					<input type="submit" class="reset-button button-secondary" name="reset" value="<?php esc_attr_e( 'Restore Defaults', 'options-framework' ); ?>" onclick="return confirm( '<?php print esc_js( __( 'Click OK to reset. Any theme settings will be lost!', 'options-framework' ) ); ?>' );" />
					<div class="clear"></div>
				</div>
				</form>
			</div> 
		</div>
		<?php do_action( 'optionsframework_after' ); ?>
		</div>

<?php
	}

/**
	 * Validate Options.
	 *
	 * This runs after the submit/reset button has been clicked and
	 * validates the inputs.
	 *
	 * @uses $_POST['reset'] to restore default options
	 */
	function validate_options( $input ) {

/*
		 * Restore Defaults.
		 *
		 * In the event that the user clicked the "Restore Defaults"
		 * button, the options defined in the theme's options.php
		 * file will be added to the option for the active theme.
		 */

if ( isset( $_POST['reset'] ) ) {
			add_settings_error( 'options-framework', 'restore_defaults', __( 'Default options restored.', 'options-framework' ), 'updated fade' );
			return $this->get_default_values();
		}

/*
		 * Update Settings
		 *
		 * This used to check for $_POST['update'], but has been updated
		 * to be compatible with the theme customizer introduced in WordPress 3.4
		 */

$clean = array();
		$options = & Options_Framework::_optionsframework_options();
		foreach ( $options as $option ) {

if ( ! isset( $option['id'] ) ) {
				continue;
			}

if ( ! isset( $option['type'] ) ) {
				continue;
			}

$id = preg_replace( '/[^a-zA-Z0-9._\-]/', '', strtolower( $option['id'] ) );

// Set checkbox to false if it wasn't sent in the $_POST
			if ( 'checkbox' == $option['type'] && ! isset( $input[$id] ) ) {
				$input[$id] = false;
			}

// Set each item in the multicheck to false if it wasn't sent in the $_POST
			if ( 'multicheck' == $option['type'] && ! isset( $input[$id] ) ) {
				foreach ( $option['options'] as $key => $value ) {
					$input[$id][$key] = false;
				}
			}

// For a value to be submitted to database it must pass through a sanitization filter
			if ( has_filter( 'of_sanitize_' . $option['type'] ) ) {
				$clean[$id] = apply_filters( 'of_sanitize_' . $option['type'], $input[$id], $option );
			}
		}

// Hook to run after validation
		do_action( 'optionsframework_after_validate', $clean );

return $clean;
	}

/**
	 * Display message when options have been saved
	 */

function save_options_notice() {
		add_settings_error( 'options-framework', 'save_options', __( 'Options saved.', 'options-framework' ), 'updated fade' );
	}

/**
	 * Get the default values for all the theme options
	 *
	 * Get an array of all default values as set in
	 * options.php. The 'id','std' and 'type' keys need
	 * to be defined in the configuration array. In the
	 * event that these keys are not present the option
	 * will not be included in this function's output.
	 *
	 * @return array Re-keyed options configuration array.
	 *
	 */

/**
	 * Add options menu item to admin bar
	 */

function optionsframework_admin_bar() {

$menu = $this->menu_settings();

global $wp_admin_bar;

if ( 'menu' == $menu['mode'] ) {
			$href = admin_url( 'admin.php?page=' . $menu['menu_slug'] );
		} else {
			$href = admin_url( 'themes.php?page=' . $menu['menu_slug'] );
		}

$args = array(
			'parent' => 'appearance',
			'id' => 'of_theme_options',
			'title' => $menu['menu_title'],
			'href' => $href
		);

$wp_admin_bar->add_menu( apply_filters( 'optionsframework_admin_bar', $args ) );
	}

}