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

/**
 * Nwdthemes Standalone Slider Revolution
 *
 * @package     StandaloneRevslider
 * @author		Nwdthemes <mail@nwdthemes.com>
 * @link		http://nwdthemes.com/
 * @copyright   Copyright (c) 2015. Nwdthemes
 * @license     http://themeforest.net/licenses/terms/regular
 */


/**
 *	Check if unserialized
 *
 *	@param	var	Original
 *	@return	var
 */
if( ! function_exists('maybe_unserialize'))
{
	function maybe_unserialize($original)
	{
		if ( is_serialized( $original ) ) // don't attempt to unserialize data that wasn't serialized going in
			return @unserialize( $original );
		return $original;
	}
}

/**
 * Check value to find if it was serialized.
 *
 * @param string $data   Value to check to see if was serialized.
 * @param bool   $strict Optional. Whether to be strict about the end of the string. Default true.
 * @return bool False if not serialized and true if it was.
 */
if( ! function_exists('is_serialized'))
{
	function is_serialized( $data, $strict = true ) {
		// if it isn't a string, it isn't serialized.
		if ( ! is_string( $data ) ) {
			return false;
		}
		$data = trim( $data );
		if ( 'N;' == $data ) {
			return true;
		}
		if ( strlen( $data ) < 4 ) {
			return false;
		}
		if ( ':' !== $data[1] ) {
			return false;
		}
		if ( $strict ) {
			$lastc = substr( $data, -1 );
			if ( ';' !== $lastc && '}' !== $lastc ) {
				return false;
			}
		} else {
			$semicolon = strpos( $data, ';' );
			$brace     = strpos( $data, '}' );
			// Either ; or } must exist.
			if ( false === $semicolon && false === $brace )
				return false;
			// But neither must be in the first X characters.
			if ( false !== $semicolon && $semicolon < 3 )
				return false;
			if ( false !== $brace && $brace < 4 )
				return false;
		}
		$token = $data[0];
		switch ( $token ) {
			case 's' :
				if ( $strict ) {
					if ( '"' !== substr( $data, -2, 1 ) ) {
						return false;
					}
				} elseif ( false === strpos( $data, '"' ) ) {
					return false;
				}
				// or else fall through
			case 'a' :
			case 'O' :
				return (bool) preg_match( "/^{$token}:[0-9]+:/s", $data );
			case 'b' :
			case 'i' :
			case 'd' :
				$end = $strict ? '$' : '';
				return (bool) preg_match( "/^{$token}:[0-9.E-]+;$end/", $data );
		}
		return false;
	}
}

/**
 *	Output checkbox checked
 *
 *	@param	string	Value
 *	@param	string	State (on/off)
 *	@param	boolean $output
 */
if( ! function_exists('checked'))
{
	function checked($value = '', $state = 'on', $output = true) {
		$result = $value == $state ? 'checked="checked"' : '';
		if ($output) {
			echo $result;
		}
		return $result;
	}
}

/**
 *	Output select option selected
 *
 *	@param	string	Value
 *	@param	string	State
 *	@param	boolean	Output
 */
if( ! function_exists('selected')) {
	function selected($value = '', $state = '', $output = true) {
		if ( $value == $state ) {
            if ($output) {
    			echo 'selected="selected"';
            } else {
                return 'selected="selected"';
            }
		}
	}
}

/**
 *	Does nothing
 *
 *	@param	string	Nounce
 *	@param	string	Actions
 *	@return	boolean	True
 */
if( ! function_exists('wp_verify_nonce'))
{
	function wp_verify_nonce($nonce = '', $actions = '')
	{
		return TRUE;
	}
}


/**
 *	Does nothing
 *
 *	@param	string	Content
 *	@return	string	Content
 */
if( ! function_exists('do_shortcode'))
{
	function do_shortcode($content = '')
	{
		return $content;
	}
}


/**
 *	Does nothing
 *
 *	@return	string	Empty
 */
if( ! function_exists('wp_create_nonce'))
{
	function wp_create_nonce()
	{
		return '';
	}
}


/**
 *	Does nothing
 *
 *	@return	boolean	False
 */
if( ! function_exists('is_multisite'))
{
	function is_multisite()
	{
		return FALSE;
	}
}

/**
 *	Returns content url
 *
 *	@return	string
 */
if( ! function_exists('content_url'))
{
	function content_url($useCommonMediaFolder = false)
	{
        $rs_image_path = ($useCommonMediaFolder ? RS_IMAGE_PATH_COMMON : RS_IMAGE_PATH);
		return base_url() . $rs_image_path;
	}
}

if( ! function_exists('admin_url'))
{
	/**
	 *	Get revslider admin url
	 *
	 *	@param	string	Url
	 *	@return	string
	 */

	function admin_url($url) {
        $find = array('admin.php', 'admin-ajax.php');
        $replace = array('', site_url('c=admin&m=admin_ajax'));
		$adminUrl = str_replace($find, $replace, $url);
		return $adminUrl;
	}
}

/**
 *	Gets Get Param
 *
 *	@param	string	Handle
 *	@param	string	Default
 *	@return	string	Value
 */
if( ! function_exists('get_param'))
{
	function get_param($handle = '', $default = '')
	{
		$ci = &get_instance();
		$value = $ci->input->get($handle);
		return $value === FALSE ? $default : $value;
	}
}

/**
 *	Replicates WP style pagination
 *
 *	@param	array	Arguments
 *	@return	string	Pagination html
 */
if( ! function_exists('paginate_links'))
{
	function paginate_links( $args = array() )
	{
		$total        = 1;
		$current      = get_param('paged', 1);

		$defaults = array(
			'total' => $total,
			'current' => $current,
			'show_all' => false,
			'prev_next' => true,
			'prev_text' => __('&laquo; Previous'),
			'next_text' => __('Next &raquo;'),
			'end_size' => 1,
			'mid_size' => 2,
			'type' => 'plain',
			'add_args' => false, // array of query args to add
			'add_fragment' => '',
			'before_page_number' => '',
			'after_page_number' => ''
		);

		$args = array_merge( $defaults, $args );

		// Who knows what else people pass in $args
		$total = (int) $args['total'];
		if ( $total < 2 ) {
			return;
		}
		$current  = (int) $args['current'];
		$end_size = (int) $args['end_size']; // Out of bounds?  Make it the default.
		if ( $end_size < 1 ) {
			$end_size = 1;
		}
		$mid_size = (int) $args['mid_size'];
		if ( $mid_size < 0 ) {
			$mid_size = 2;
		}
		$add_args = is_array( $args['add_args'] ) ? $args['add_args'] : false;
		$r = '';
		$page_links = array();
		$dots = false;

		if ( $args['prev_next'] && $current && 1 < $current ) :
			$link = str_replace( '%_%', 2 == $current ? '' : $args['format'], $args['base'] );
			$link = str_replace( '%#%', $current - 1, $link );
			if ( $add_args )
				$link = add_query_arg( $add_args, $link );
			$link .= $args['add_fragment'];

			/**
			 * Filter the paginated links for the given archive pages.
			 *
			 * @since 3.0.0
			 *
			 * @param string $link The paginated link URL.
			 */
			$page_links[] = '<a class="prev page-numbers" href="' . site_url($link) . '">' . $args['prev_text'] . '</a>';
		endif;
		for ( $n = 1; $n <= $total; $n++ ) :
			if ( $n == $current ) :
				$page_links[] = "<span class='page-numbers current'>" . $args['before_page_number'] . $n . $args['after_page_number'] . "</span>";
				$dots = true;
			else :
				if ( $args['show_all'] || ( $n <= $end_size || ( $current && $n >= $current - $mid_size && $n <= $current + $mid_size ) || $n > $total - $end_size ) ) :
					$link = str_replace( '%_%', 1 == $n ? '' : $args['format'], $args['base'] );
					$link = str_replace( '%#%', $n, $link );
					if ( $add_args )
						$link = add_query_arg( $add_args, $link );
					$link .= $args['add_fragment'];

					/** This filter is documented in wp-includes/general-template.php */
					$page_links[] = "<a class='page-numbers' href='" . site_url($link) . "'>" . $args['before_page_number'] . $n . $args['after_page_number'] . "</a>";
					$dots = true;
				elseif ( $dots && ! $args['show_all'] ) :
					$page_links[] = '<span class="page-numbers dots">' . __( '&hellip;' ) . '</span>';
					$dots = false;
				endif;
			endif;
		endfor;
		if ( $args['prev_next'] && $current && ( $current < $total || -1 == $total ) ) :
			$link = str_replace( '%_%', $args['format'], $args['base'] );
			$link = str_replace( '%#%', $current + 1, $link );
			if ( $add_args )
				$link = add_query_arg( $add_args, $link );
			$link .= $args['add_fragment'];

			/** This filter is documented in wp-includes/general-template.php */
			$page_links[] = '<a class="next page-numbers" href="' . site_url($link) . '">' . $args['next_text'] . '</a>';
		endif;
		switch ( $args['type'] ) {
			case 'array' :
				return $page_links;

			case 'list' :
				$r .= "<ul class='page-numbers'>\n\t<li>";
				$r .= join("</li>\n\t<li>", $page_links);
				$r .= "</li>\n</ul>\n";
				break;

			default :
				$r = join("\n", $page_links);
				break;
		}
		return $r;
	}
}


/**
 *	Add arguments to url
 *
 *	@param	array	Arguments
 *	@param	string	Url
 *	@return	string	Link
 */
if( ! function_exists('add_query_arg'))
{
	function add_query_arg($args = array(), $link) {
		if ( is_array($args) )
		{
			foreach ($args as $_key => $_val) {
				$link .= $_key . '/' . $_val . '/';
			}
		}
		return $link;
	}
}

/**
 *	Check if SSL in use
 *
 *	@return	boolean
 */
if( ! function_exists('is_ssl'))
{
	function is_ssl() {
		if ( isset($_SERVER['HTTPS']) ) {
			if ( 'on' == strtolower($_SERVER['HTTPS']) )
				return true;
			if ( '1' == $_SERVER['HTTPS'] )
				return true;
		} elseif ( isset($_SERVER['SERVER_PORT']) && ( '443' == $_SERVER['SERVER_PORT'] ) ) {
			return true;
		}
		return false;
	}
}

if( ! function_exists('force_ssl')) {

    /**
     *	Force ssl on urls
     *
     *	@return	string
     */

	function force_ssl($url) {
        if (is_ssl()) {
            $url = str_replace('http://', 'https://', $url);
        }
		return $url;
	}
}

if( ! function_exists('home_url')) {
    /**
     * Returns home url
     *
     * @return string
     */
    function home_url() {
        return base_url();
    }
}

if( ! function_exists('force_config_ssl')) {

    /**
     *	Force ssl on config urls
     */

	function force_config_ssl() {
		$ci =& get_instance();
		if ($ci->input->server('HTTPS') && $ci->input->server('HTTPS') != 'off') {
			$ci->config->config['base_url'] = str_replace('http://', 'https://', $ci->config->config['base_url']);
            if (isset($ci->config->config['site_url'])) {
                $ci->config->config['site_url'] = str_replace('http://', 'https://', $ci->config->config['site_url']);
            }
		} else {
			$ci->config->config['base_url'] = str_replace('https://', 'http://', $ci->config->config['base_url']);
            if (isset($ci->config->config['site_url'])) {
                $ci->config->config['site_url'] = str_replace('https://', 'http://', $ci->config->config['site_url']);
            }
		}
    }
}

/**
 *	Get upload dir
 *
 *	@return	array
 */
if( ! function_exists('wp_upload_dir'))
{
	function wp_upload_dir($useCommonMediaFolder = false) {
	    $rs_image_path = ($useCommonMediaFolder ? RS_IMAGE_PATH_COMMON : RS_IMAGE_PATH);
		$upload_dir = array(
			'path'		=> FCPATH . $rs_image_path . '/',
			'url'		=> base_url() . $rs_image_path . '/',
			'subdir'	=> '/',
			'basedir'	=> FCPATH . $rs_image_path,
			'baseurl'	=> base_url() . $rs_image_path,
			'error'		=> FALSE
		);
		return $upload_dir;
	}
}


/**
 *	Get time
 *
 *	@return	int
 */
if( ! function_exists('current_time'))
{
	function current_time() {
		return time();
	}
}


/**
 *	Snitize title
 *
 *	@param	string
 *	@return	string
 */
if( ! function_exists('sanitize_title'))
{
	function sanitize_title($title) {
		return sanitize_text_field($title);
	}
}


/**
 *	Snitize title
 *
 *	@param	string
 *	@return	string
 */
if( ! function_exists('sanitize_title_with_dashes'))
{
	function sanitize_title_with_dashes($title) {
		return url_title(sanitize_title($title));
	}
}


/**
 *	Snitize text field
 *
 *	@param	string
 *	@return	string
 */
if( ! function_exists('sanitize_text_field'))
{
	function sanitize_text_field($string) {
		if (is_string($string))
		{
			$filtered = strip_tags($string);
			$found = false;
			while ( preg_match('/%[a-f0-9]{2}/i', $filtered, $match) ) {
				$filtered = str_replace($match[0], '', $filtered);
				$found = true;
			}
			if ( $found ) {
				$filtered = trim( preg_replace('/ +/', ' ', $filtered) );
			}
			return $filtered;
		}
		else
		{
			foreach($string as $_key => $_string) {
				$string[$_key] = sanitize_text_field($_string);
			}
			return $string;
		}
	}
}


/**
 *	Snitize title
 *
 *	@param	string
 *	@return	string
 */
if( ! function_exists('esc_attr'))
{
	function esc_attr($text) {
		return html_escape($text);
	}
}

if( ! function_exists('esc_url')) {
    /**
     * Sanitize url
     *
     * @param	string  $url
     * @return	string
     */
    function esc_url($url) {
        return prep_url($url);
    }
}

if( ! function_exists('esc_html')) {
    /**
     * Sanitize html
     *
     * @param	string  $text
     * @return	string
     */
    function esc_html($text) {
        return strip_tags($text);
    }
}

/**
 *	Format sizes
 *
 *	@param	int	Bytes
 *	@param	int	Decimals
 *	@return	string
 */

if( ! function_exists('size_format'))
{
	function size_format( $bytes, $decimals = 0 ) {
		$quant = array(
			// ========================= Origin ====
			'TB' => 1099511627776,  // pow( 1024, 4)
			'GB' => 1073741824,     // pow( 1024, 3)
			'MB' => 1048576,        // pow( 1024, 2)
			'kB' => 1024,           // pow( 1024, 1)
			'B ' => 1,              // pow( 1024, 0)
		);
		foreach ( $quant as $unit => $mag )
			if ( doubleval($bytes) >= $mag )
				return number_format( $bytes / $mag, $decimals ) . ' ' . $unit;

		return false;
	}
}


if( ! function_exists('add_filter')) {

    /**
     *	Add filter
     *
     *	@param	string	$handle
     *	@param	array	$filter
     *	@param	int 	$priority
     *	@param	int 	$accepted_args
     */

	function add_filter($handle, $filter, $priority = 10, $accepted_args = 1) {
		$ci = &get_instance();
		$filters = $ci->data->get('filters', array());
		$filters[$handle][] = array(
            'function'      => $filter,
            'priority'      => $priority,
            'accepted_args' => $accepted_args
        );
		$ci->data->set('filters', $filters);
	}
}


/**
 *	Add filter
 *
 *	@param	string	$handle
 *	@param	mixed	$value
 *	@return	var
 */

if( ! function_exists('apply_filters'))
{
	function apply_filters($handle, $value) {

        $args = func_get_args();
        if (func_num_args()) {
            unset($args[0]);
        }

		$ci = &get_instance();

        $actions = $ci->data->get('actions', array());
        if (isset($actions[$handle]) && is_array($actions[$handle]) && $actions[$handle]) {
            $value = do_action($handle, $value);
        }

		$filters = $ci->data->get('filters', array());
		if (isset($filters[$handle])) {

            $filtersToApply = $filters[$handle];
            usort($filtersToApply, function ($a, $b) {
                if ($a['priority'] == $b['priority']) {
                    return 0;
                } else {
                    return $a['priority'] < $b['priority'] ? -1 : 1;
                }
            });
			foreach ($filtersToApply as $filter) {

                $args = array_slice(func_get_args(), 1, $filter['accepted_args']);
                $args[0] = $value;

                if (is_array($filter['function']) && count($filter['function']) && is_string($filter['function'][0])) {
                    $reflectionMethod = new ReflectionMethod($filter['function'][0], $filter['function'][1]);
                    if (!$reflectionMethod->isStatic()) {
                        $reflectionClass = new ReflectionClass($filter['function'][0]);
                        $filter['function'][0] = $reflectionClass->newInstanceWithoutConstructor();
                    }
                }

				$value = call_user_func_array($filter['function'], $args);
			}
		}

		return $value;
	}
}


/**
 *	Add action
 *
 *	@param	string	$handle
 *	@param	array	$action
 */

if( ! function_exists('add_action'))
{
	function add_action($handle, $action) {
        $ci = &get_instance();
		$actions = $ci->data->get('actions', array());
		$actions[$handle][] = $action;
		$ci->data->set('actions', $actions);
	}
}

/**
 *	Remove action
 *
 *	@param	string	$handle
 *	@param	array	$action
 */

if( ! function_exists('remove_action'))
{
    function remove_action($handle, $action) {
        $ci = &get_instance();
        $actions = $ci->data->get('actions', array());
        if (isset($actions[$handle]) && is_array($actions[$handle])) {
            foreach ($actions[$handle] as $_key => $_action) {
                if ($_action == $action) {
                    unset($actions[$handle][$_key]);
                    $ci->data->set('actions', $actions);
                    continue;
                }
            }
        }
    }
}


/**
 *	Run actions
 *
 *	@param	string	$handle
 *	@param	mixed	Arguments
 *	@param	bool	$output
 */

if( ! function_exists('call_actions'))
{
	function call_actions($handle, $args = array()) {
	}
}

if( ! function_exists('do_action')) {

	/**
	 *	Do action
	 *
	 *	@param	string	$handle
	 *	@param	mixed	$args
	 *	@return string
	 */

	function do_action($handle, $args = false) {

        $args = func_get_args();
        if (func_num_args()) {
            unset($args[0]);
        }

		$ci = &get_instance();
		$actions = $ci->data->get('actions', array());
		$output = false;
		$return = false;
        if (isset($actions[$handle]) && is_array($actions[$handle])) {
			ob_start();
			foreach ($actions[$handle] as $action) {

                if (is_array($action) && count($action) == 2 && is_string($action[0])) {
                    $reflectionMethod = new ReflectionMethod($action[0], $action[1]);
                    if (!$reflectionMethod->isStatic()) {
                        $reflectionClass = new ReflectionClass($action[0]);
                        $action[0] = $reflectionClass->newInstanceWithoutConstructor();
                    }
                }

                $_return = call_user_func_array($action, $args);
                if ($_return) {
                    $args[1] = $_return;
                    $return = $_return;
                }
			}
			$output = ob_get_contents();
			ob_end_clean();
			$output = str_replace(' for WordPress', '', $output);
            echo $output;
		}
		return $output ? $output : $return;
	}

}

if( ! function_exists('add_menu_page')) {
    function add_menu_page( $page_title, $menu_title, $capability, $menu_slug, $function = '', $icon_url = '', $position = null ) {

        $ci = &get_instance();
        $menu = $ci->data->get('menu', array());
        $admin_page_hooks = $ci->data->get('admin_page_hooks', array());
        $_registered_pages = $ci->data->get('_registered_pages', array());
        $_parent_pages = $ci->data->get('_parent_pages', array());

        if ( is_plugin_active( $menu_slug ) ) {
            $menu_slug = plugin_basename($menu_slug);
        }

        $admin_page_hooks[$menu_slug] = sanitize_title( $menu_title );

        $hookname = get_plugin_page_hookname( $menu_slug, '' );

        if ( !empty( $function ) && !empty( $hookname ) && current_user_can( $capability ) )
            add_action( $hookname, $function );

        $icon_url = 'dashicons-admin-generic';
        $icon_class = 'menu-icon-generic ';

        $new_menu = array( $menu_title, $capability, $menu_slug, $page_title, 'menu-top ' . $icon_class . $hookname, $hookname, $icon_url );

        if ( null === $position ) {
            $menu[] = $new_menu;
        } elseif ( isset( $menu[ "$position" ] ) ) {
            $position = $position + substr( base_convert( md5( $menu_slug . $menu_title ), 16, 10 ) , -5 ) * 0.00001;
            $menu[ "$position" ] = $new_menu;
        } else {
            $menu[ $position ] = $new_menu;
        }

        $_registered_pages[$hookname] = true;

        // No parent as top level
        $_parent_pages[$menu_slug] = false;

        $ci->data->set('menu', $menu);
        $ci->data->set('admin_page_hooks', $admin_page_hooks);
        $ci->data->set('_registered_pages', $_registered_pages);
        $ci->data->set('_parent_pages', $_parent_pages);

        return $hookname;
    }
}

if( ! function_exists('add_submenu_page')) {
    function add_submenu_page( $parent_slug, $page_title, $menu_title, $capability, $menu_slug, $function = '' ) {
        $ci = &get_instance();
        $menu = $ci->data->get('menu', array());
        $submenu = $ci->data->get('submenu', array());
        $_wp_real_parent_file = $ci->data->get('_wp_real_parent_file', array());
        $_wp_submenu_nopriv = $ci->data->get('_wp_submenu_nopriv', array());
        $_registered_pages = $ci->data->get('_registered_pages', array());
        $_parent_pages = $ci->data->get('_parent_pages', array());

        if ( is_plugin_active( $menu_slug ) ) {
            $menu_slug = plugin_basename($menu_slug);
        }
        if ( is_plugin_active( $parent_slug ) ) {
            $parent_slug = plugin_basename( $parent_slug);
        }

        if ( isset( $_wp_real_parent_file[$parent_slug] ) )
            $parent_slug = $_wp_real_parent_file[$parent_slug];

        if ( !current_user_can( $capability ) ) {
            $_wp_submenu_nopriv[$parent_slug][$menu_slug] = true;
            return false;
        }

        /*
         * If the parent doesn't already have a submenu, add a link to the parent
         * as the first item in the submenu. If the submenu file is the same as the
         * parent file someone is trying to link back to the parent manually. In
         * this case, don't automatically add a link back to avoid duplication.
         */
        if (!isset( $submenu[$parent_slug] ) && $menu_slug != $parent_slug ) {
            foreach ( (array)$menu as $parent_menu ) {
                if ( $parent_menu[2] == $parent_slug && current_user_can( $parent_menu[1] ) )
                    $submenu[$parent_slug][] = array_slice( $parent_menu, 0, 4 );
            }
        }

        $submenu[$parent_slug][] = array ( $menu_title, $capability, $menu_slug, $page_title );

        $hookname = get_plugin_page_hookname( $menu_slug, $parent_slug);
        if (!empty ( $function ) && !empty ( $hookname ))
            add_action( $hookname, $function );

        $_registered_pages[$hookname] = true;

        // No parent as top level.
        $_parent_pages[$menu_slug] = $parent_slug;

        $ci->data->set('menu', $menu);
        $ci->data->set('submenu', $submenu);
        $ci->data->set('_wp_real_parent_file', $_wp_real_parent_file);
        $ci->data->set('_wp_submenu_nopriv', $_wp_submenu_nopriv);
        $ci->data->set('_registered_pages', $_registered_pages);
        $ci->data->set('_parent_pages', $_parent_pages);

        return $hookname;
    }
}

if( ! function_exists('get_plugin_page_hookname')) {
    /**
     *
     * @global array $admin_page_hooks
     * @param string $plugin_page
     * @param string $parent_page
     */
    function get_plugin_page_hookname( $plugin_page, $parent_page ) {

        $ci = &get_instance();
        $admin_page_hooks = $ci->data->get('admin_page_hooks', array());

        $parent = get_admin_page_parent( $parent_page );

        $page_type = 'admin';
        if ( empty ( $parent_page ) || 'admin.php' == $parent_page || isset( $admin_page_hooks[$plugin_page] ) ) {
            if ( isset( $admin_page_hooks[$plugin_page] ) ) {
                $page_type = 'toplevel';
            } elseif ( isset( $admin_page_hooks[$parent] )) {
                $page_type = $admin_page_hooks[$parent];
            }
        } elseif ( isset( $admin_page_hooks[$parent] ) ) {
            $page_type = $admin_page_hooks[$parent];
        }

        $plugin_name = preg_replace( '!\.php!', '', $plugin_page );

        return $page_type . '_page_' . $plugin_name;
    }
}

if( ! function_exists('get_plugin_page_hook')) {
    /**
     * @since 2.3.0
     *
     * @param string $plugin_page
     * @param string $parent_page
     * @return string|null
     */
    function get_plugin_page_hook( $plugin_page, $parent_page ) {
        $hook = get_plugin_page_hookname( $plugin_page, $parent_page );
        if ( has_action($hook) )
            return $hook;
        else
            return null;
    }
}

if( ! function_exists('get_admin_page_parent')) {
    function get_admin_page_parent( $parent = '' ) {
        return $parent;
    }
}

if( ! function_exists('has_action')) {

    /**
     * Check if action added
     *
     * @param	string	$handle
     * @param	callable|bool $function_to_check Optional. The callback to check for. Default false.
     * @return  boolean
     */
    function has_action($handle, $function_to_check = false) {
        $ci = &get_instance();
        $actions = $ci->data->get('actions', array());

        if ( !isset($actions[$handle]) ) {
            return false;
        }
        if ( !$function_to_check ) {
            return true;
        }

        $hasAction = is_array($actions[$handle]) && in_array($function_to_check, $actions[$handle]);
        return $hasAction;
    }

}


if( ! function_exists('wp_register_script')) {

    /**
     *	Register script
     *
     *	@param	string	$handle
     *	@param	string	$script
     */

	function wp_register_script($handle, $script = false) {
		if ($script) {
			$ci = &get_instance();
			$regScripts = $ci->data->get('reg_scripts', array());
			$regScripts[$handle][] = $script;
			$ci->data->set('reg_scripts', $regScripts);
		}
	}
}

if( ! function_exists('wp_enqueue_script')) {

    /**
     *	Add script
     *
     *	@param	string	$handle
     *	@param	string	$script
     */

	function wp_enqueue_script($handle, $script = false) {
        $ci = &get_instance();
        $scripts = $ci->data->get('scripts', array());
        $regScripts = $ci->data->get('reg_scripts', array());
        $handles = is_array($handle) ? $handle : array($handle);
        foreach ($handles as $_handle) {
            if (isset($regScripts[$_handle])) {
                foreach ($regScripts[$_handle] as $regScript) {
                    $scripts[$_handle] = $regScript;
                }
            }
        }
		if ($script && is_string($handle)) {
			$scripts[$handle] = $script;
		}
        $ci->data->set('scripts', $scripts);
	}
}

if( ! function_exists('wp_register_style')) {

    /**
     *	Register style
     *
     *	@param	string	$handle
     *	@param	string	$style
     */

	function wp_register_style($handle, $style = false) {
		if ($style) {
			$ci = &get_instance();
			$regStyles = $ci->data->get('reg_styles', array());
			$regStyles[$handle][] = $style;
			$ci->data->set('reg_styles', $regStyles);
		}
	}
}

if( ! function_exists('wp_enqueue_style')) {

    /**
     *	Add style
     *
     *	@param	string	$handle
     *	@param	string	$style
     */

	function wp_enqueue_style($handle, $style = false) {
        $ci = &get_instance();
        $styles = $ci->data->get('styles', array());
        $regStyles = $ci->data->get('reg_styles', array());
        $handles = is_array($handle) ? $handle : array($handle);
        foreach ($handles as $_handle) {
            if (isset($regStyles[$_handle])) {
                foreach ($regStyles[$_handle] as $regStyle) {
                    $styles[$_handle] = $regStyle;
                }
            }
        }
		if ($style && is_string($handle)) {
			$styles[$handle] = $style;
		}
        $ci->data->set('styles', $styles);
	}
}

/**
 *	Add inline style
 *
 *	@param	string	$handle
 *	@param	string	$style
 */

if( ! function_exists('wp_add_inline_style'))
{
	function wp_add_inline_style($handle, $style = false) {
		if ($style)
		{
			$ci = &get_instance();
			$styles = $ci->data->get('inline_styles', array());
			$styles[] = $style;
			$ci->data->set('inline_styles', $styles);
		}
	}
}


/**
 *	Get styles
 *
 *	@param	string	$handle
 *	@param	string	$var
 *	@param	array	$lang
 */

if( ! function_exists('wp_localize_script'))
{
	function wp_localize_script($handle, $var, $lang = array()) {
        $ci = &get_instance();
		$localize_scripts = $ci->data->get('localize_scripts', array());
        $localize_scripts[$handle] = array(
            'var'   => $var,
            'lang'  => $lang
        );
        $ci->data->set('localize_scripts', $localize_scripts);
	}
}


/**
 *	Get post meta (for compatibility)
 *
 *	@param	int		$id
 *	@param	string	$hanlde
 *	@param	bool	$flag
 *	@return	var
 */

if( ! function_exists('get_post_meta'))
{
	function get_post_meta($id, $handle, $flag = true) {
		return '';
	}
}


/**
 *	Get post types (for compatibility)
 *
 *	@param	int		$id
 *	@param	string	$hanlde
 *	@param	bool	$flag
 *	@return	var
 */

if( ! function_exists('get_post_types'))
{
	function get_post_types($arg1 = '', $arg2 = '') {
		return array();
	}
}

/**
 *	Check if in admin access now
 *
 *	@return	bool
 */

if( ! function_exists('is_admin'))
{
	function is_admin() {
		$ci =& get_instance();
		$isAdmin = $ci->data->get('force_no_admin') ? false : isset($ci->router)
            && $ci->router->fetch_class() == 'admin'
            && isset($ci->session)
			&& $ci->session->userdata('user_id');
		return $isAdmin;
	}
}

if( ! function_exists('is_super_admin'))
{
	function is_super_admin() {
		return is_admin();
	}
}

if( ! function_exists('is_admin_bar_showing'))
{
	function is_admin_bar_showing() {
		return is_admin();
	}
}

/**
 * Temporary set/unset forcing of no admin mode
 * @param boolean $noAdmin
 */
if( ! function_exists('forceNoAdmin'))
{
	function forceNoAdmin($noAdmin) {
		$ci =& get_instance();
		$ci->data->set('force_no_admin', $noAdmin);
	}
}

/**
 *	Check if current user have access
 *
 *	@return	bool
 */

if( ! function_exists('current_user_can'))
{
	function current_user_can() {
		return is_admin();
	}
}

/**
 *	Get content from remote url
 *
 *	@param	string	$url
 *	@param	array	$args
 *	@return	array
 */

if( ! function_exists('wp_remote_post'))
{
	function wp_remote_post($url, $args = array()) {

		if ( ! function_exists('curl_version')) {
			return  array(
				'response'	=> array('code' => 0, 'message' => __('cURL library not installed.')),
				'body'		=> false
			);
		}

		$defaults = array(
			'headers' => array(),
			'cookies' => array(),
			'httpversion' => CURL_HTTP_VERSION_NONE,
			'timeout' => 30,
			'method' => 'POST',
			'body' => array()
		);
		$args = array_merge($defaults, $args);

		$ch = curl_init();

		$headers = array();
		foreach ($args['headers'] as $key => $value) {
			$headers[] = "$key: $value";
		}

		curl_setopt($ch, CURLOPT_URL, $url);
		if ($args['method'] == 'POST' && $args['body'] && is_array($args['body'])) {
			curl_setopt($ch, CURLOPT_POST, 1);
			curl_setopt($ch, CURLOPT_POSTFIELDS, http_build_query($args['body'], '', '&'));
		}
        curl_setopt($ch, CURLOPT_USERAGENT, 'StandAlone/None; ' . get_bloginfo('url'));
		curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
        if ( !empty($headers)) {
            curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
        }
		curl_setopt($ch, CURLOPT_COOKIE,  implode('; ', $args['cookies']));
		curl_setopt($ch, CURLOPT_FAILONERROR, true);
		curl_setopt($ch, CURLOPT_TIMEOUT, $args['timeout']);
		curl_setopt($ch, CURLOPT_HTTP_VERSION, $args['httpversion'] == '1.0' ? CURL_HTTP_VERSION_1_0 : ($args['httpversion'] == '1.1' ? CURL_HTTP_VERSION_1_1 : CURL_HTTP_VERSION_NONE));
		curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 0);
		curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, 0);
		curl_setopt($ch, CURLOPT_ENCODING, '');

		$output = curl_exec($ch);
		$code = curl_getinfo($ch, CURLINFO_HTTP_CODE);
		$error = curl_errno($ch);
		$message = curl_error($ch);

		curl_close ($ch);

		$result = array(
			'response'	=> array('code' => $code, 'message' => $message, 'error' => $error),
			'body'		=> $output
		);
		return $result;
	}
}


/**
 *	Get content from remote url
 *
 *	@param	string	$url
 *	@param	array	$args
 *	@return	array
 */

if( ! function_exists('wp_remote_get'))
{
	function wp_remote_get($url, $args = array()) {
		$args['method'] = 'GET';
		return wp_remote_post($url, $args);
	}
}


/**
 *	Open content from remote url
 *
 *	@param	string	$url
 *	@return	string
 */

if( ! function_exists('wp_remote_fopen'))
{
	function wp_remote_fopen($url) {
		$args = array(
			'method'             =>         'GET',
			'timeout'            =>         5,
			'redirection'        =>         5,
			'httpversion'        =>         '1.0',
			'blocking'           =>         true,
			'body'               =>         null
		);
		$response = wp_remote_post($url, $args);
		return $response['response']['code'] == 200 ? $response['body'] : '';
	}
}


/**
 *  Get response code from response
 *
 *	@param	array	$response
 *	@return	string
 */

if( ! function_exists('wp_remote_retrieve_response_code'))
{
	function wp_remote_retrieve_response_code($response) {
		return $response['response']['code'];
	}
}


/**
 *  Get body from response
 *
 *	@param	array	$response
 *	@return	string
 */

if( ! function_exists('wp_remote_retrieve_body'))
{
	function wp_remote_retrieve_body($response) {
		return $response['body'];
	}
}


/**
 *	Get blog info
 *
 *	@param	string	$option
 *	@return	array
 */

if( ! function_exists('get_bloginfo'))
{
	function get_bloginfo($option) {
		$info = array(
			'url' => site_url()
		);
		return isset($info[$option]) ? $info[$option] : false;
	}
}


/**
 *	Check for error in data
 *
 *	@param	var		$data
 *	@return	bool
 */

if( ! function_exists('is_wp_error'))
{
	function is_wp_error($data) {
		return false;
	}
}


/**
 *	Get transient
 *
 *	@param	string	Handle
 *	@return var
 */

if( ! function_exists('get_transient'))
{
	function get_transient($handle) {
		$ci = &get_instance();
		$ci->load->model('transient_model', 'Transient');
		return $ci->Transient->get_value($handle);
	}
}


/**
 *	Set transient
 *
 *	@param	string	Handle
 *	@param	var		Value
 *	@param	int		Expiration (seconds)
 */

if( ! function_exists('set_transient'))
{
	function set_transient($handle, $value, $expiration = 0) {
		$ci = &get_instance();
		$ci->load->model('transient_model', 'Transient');
		$expiration = (int) $expiration;
		$expires = $expiration ? date('Y-m-d H:i:s', strtotime("+$expiration seconds")) : NULL;
		$ci->Transient->set($handle, $value, $expires);
	}
}

/**
 *	Delete transient
 *
 *	@param	string	Handle
 */

if( ! function_exists('delete_transient'))
{
	function delete_transient($handle) {
		$ci = &get_instance();
		$ci->load->model('transient_model', 'Transient');
		$ci->Transient->delete($handle);
	}
}


/**
 *	Date localization
 *
 *	@param	string	$format
 *	@param	int		$date
 */

if( ! function_exists('date_i18n'))
{
	function date_i18n($format, $date) {
		$format = trim($format);
		$format = $format ? $format : 'd M, Y - H:i';
		return date($format, $date);
	}
}


/**
 *	Check if file is writable
 *
 *	@param	string	$path
 *	@return	bool
 */

if( ! function_exists('wp_is_writable'))
{
	function wp_is_writable($path) {
		return is_writable($path);
	}
}

if( ! function_exists('wp_mkdir_p')) {
    /**
     *	Make writable directory
     *
     *	@param	string  $dir
     *	@return	bool
     */
	function wp_mkdir_p($dir) {
        $result = true;
        $path = str_replace(array('/', '\\'), DIRECTORY_SEPARATOR, $dir);
        $path = str_replace(FCPATH, '', $path);
        $parts = explode(DIRECTORY_SEPARATOR, $path);
        $path = FCPATH;
        foreach ($parts as $part) if ($part) {
            $path .= $part . DIRECTORY_SEPARATOR;
    		if ( ! (file_exists($path) && is_dir($path))) {
    			$result = mkdir($path);
                updatePermissions($path);
                if ( ! $result)
                    break;
    		}
        }
        return $result;
	}
}


/**
 * Converts byte value to integer byte value
 *
 * @param	string	$size
 * @return	int
 */

if( ! function_exists('wp_convert_hr_to_bytes'))
{
	function wp_convert_hr_to_bytes($size) {
		$size  = strtolower( $size );
		$bytes = (int) $size;
		if ( strpos( $size, 'k' ) !== false ) $bytes = intval( $size ) * 1024;
		elseif ( strpos( $size, 'm' ) !== false ) $bytes = intval($size) * 1024 * 1024;
		elseif ( strpos( $size, 'g' ) !== false ) $bytes = intval( $size ) * 1024 * 1024 * 1024;
		return $bytes;
	}
}


/**
 *	Get current page info
 *
 *	@return	obj
 */

if( ! function_exists('get_current_screen'))
{
	function get_current_screen() {
		$screen = array('id' => 'revslider');
		return (object) $screen;
	}
}


/**
 *	Check if mobile browser
 *
 *	@return	boolean
 */

if( ! function_exists('wp_is_mobile'))
{
	function wp_is_mobile() {
		$useragent = $_SERVER['HTTP_USER_AGENT'];
		$is_mobile = preg_match('/(android|bb\d+|meego).+mobile|avantgo|bada\/|blackberry|blazer|compal|elaine|fennec|hiptop|iemobile|ip(hone|od)|iris|kindle|lge |maemo|midp|mmp|netfront|opera m(ob|in)i|palm( os)?|phone|p(ixi|re)\/|plucker|pocket|psp|series(4|6)0|symbian|treo|up\.(browser|link)|vodafone|wap|windows (ce|phone)|xda|xiino/i',$useragent)||preg_match('/1207|6310|6590|3gso|4thp|50[1-6]i|770s|802s|a wa|abac|ac(er|oo|s\-)|ai(ko|rn)|al(av|ca|co)|amoi|an(ex|ny|yw)|aptu|ar(ch|go)|as(te|us)|attw|au(di|\-m|r |s )|avan|be(ck|ll|nq)|bi(lb|rd)|bl(ac|az)|br(e|v)w|bumb|bw\-(n|u)|c55\/|capi|ccwa|cdm\-|cell|chtm|cldc|cmd\-|co(mp|nd)|craw|da(it|ll|ng)|dbte|dc\-s|devi|dica|dmob|do(c|p)o|ds(12|\-d)|el(49|ai)|em(l2|ul)|er(ic|k0)|esl8|ez([4-7]0|os|wa|ze)|fetc|fly(\-|_)|g1 u|g560|gene|gf\-5|g\-mo|go(\.w|od)|gr(ad|un)|haie|hcit|hd\-(m|p|t)|hei\-|hi(pt|ta)|hp( i|ip)|hs\-c|ht(c(\-| |_|a|g|p|s|t)|tp)|hu(aw|tc)|i\-(20|go|ma)|i230|iac( |\-|\/)|ibro|idea|ig01|ikom|im1k|inno|ipaq|iris|ja(t|v)a|jbro|jemu|jigs|kddi|keji|kgt( |\/)|klon|kpt |kwc\-|kyo(c|k)|le(no|xi)|lg( g|\/(k|l|u)|50|54|\-[a-w])|libw|lynx|m1\-w|m3ga|m50\/|ma(te|ui|xo)|mc(01|21|ca)|m\-cr|me(rc|ri)|mi(o8|oa|ts)|mmef|mo(01|02|bi|de|do|t(\-| |o|v)|zz)|mt(50|p1|v )|mwbp|mywa|n10[0-2]|n20[2-3]|n30(0|2)|n50(0|2|5)|n7(0(0|1)|10)|ne((c|m)\-|on|tf|wf|wg|wt)|nok(6|i)|nzph|o2im|op(ti|wv)|oran|owg1|p800|pan(a|d|t)|pdxg|pg(13|\-([1-8]|c))|phil|pire|pl(ay|uc)|pn\-2|po(ck|rt|se)|prox|psio|pt\-g|qa\-a|qc(07|12|21|32|60|\-[2-7]|i\-)|qtek|r380|r600|raks|rim9|ro(ve|zo)|s55\/|sa(ge|ma|mm|ms|ny|va)|sc(01|h\-|oo|p\-)|sdk\/|se(c(\-|0|1)|47|mc|nd|ri)|sgh\-|shar|sie(\-|m)|sk\-0|sl(45|id)|sm(al|ar|b3|it|t5)|so(ft|ny)|sp(01|h\-|v\-|v )|sy(01|mb)|t2(18|50)|t6(00|10|18)|ta(gt|lk)|tcl\-|tdg\-|tel(i|m)|tim\-|t\-mo|to(pl|sh)|ts(70|m\-|m3|m5)|tx\-9|up(\.b|g1|si)|utst|v400|v750|veri|vi(rg|te)|vk(40|5[0-3]|\-v)|vm40|voda|vulc|vx(52|53|60|61|70|80|81|83|85|98)|w3c(\-| )|webc|whit|wi(g |nc|nw)|wmlb|wonu|x700|yas\-|your|zeto|zte\-/i',substr($useragent,0,4));
		return $is_mobile;
	}
}


/**
 *
 *  Dummy wrapper functions
 *
 */


if( ! function_exists('add_shortcode')) {
    function add_shortcode() {}
}
if( ! function_exists('get_pages')) {
    function get_pages() { return array(); }
}
if( ! function_exists('load_plugin_textdomain')) {
    function load_plugin_textdomain() {}
}
if( ! function_exists('register_activation_hook')) {
    function register_activation_hook() {}
}
if( ! function_exists('register_deactivation_hook')) {
    function register_deactivation_hook() {}
}
if( ! function_exists('get_the_author_meta')) {
    function get_the_author_meta() {}
}
if( ! function_exists('get_avatar_url')) {
    function get_avatar_url() {}
}
if( ! function_exists('get_author_posts_url')) {
    function get_author_posts_url() {}
}
if( ! function_exists('get_user_by')) {
    function get_user_by() {}
}


/**
 *
 *  Own framework functions
 *
 */


if( ! function_exists('nwdLog')) {

    /**
     * Log variable to nwd_revslider.log
     *
     * @param var $var
     */

    function nwdLog($var) {
        $log = array();
        foreach (func_get_args() as $arg) {
            $log[] = is_string($arg) ? $arg : print_r($arg, true);
        }
        $logString = implode(', ', $log);
        log_message('debug', '[NWD] ' . $logString);
    }
}

if( ! function_exists('convertAssetUrlForOutput')) {

    /**
     *	Convert assets url for frontend
     *
     *	@param  string  Handle
     *	@param  array   Params
     *	@return	string
     */
    function convertAssetUrlForOutput($url) {
        $assetsRoute = 'revslider/public/assets/';
        if (strpos($url, $assetsRoute) !== false) {
            $urlParts = explode($assetsRoute, $url);
            $urlFile = isset($urlParts[1]) ? $urlParts[1] : '';
            $assetUrl = base_url() . $assetsRoute . ltrim($urlFile, '/');
        } else {
            $assetUrl = force_ssl($url);
        }
        return $assetUrl;
    }
}

if( ! function_exists('updatePermissions')) {

    /**
     *	Update dir/file permissions (755/644 by default)
     *
     *	@param  string $path
     *	@param  int|boolean  $permissions
     */
    function updatePermissions($path, $permissions = false) {
        if ($permissions === false) {
            $permissions = file_exists($path) && is_dir($path) ? 0755 : 0644;
        }
        if ( ! @chmod($path, $permissions)) {
            nwdLog("Failed to updatePermissions('$path', '$permissions')!");
        }
    }
}