// Check Hex string
		switch ( strlen( $supplied_hex = ( str_replace( '#', '', trim( $supplied_hex ) ) ) ) ) {
			case 3:
				if ( preg_match( '/^([0-9a-f])([0-9a-f])([0-9a-f])/i', $supplied_hex ) ) {
					$supplied_hex = preg_replace( '/^([0-9a-f])([0-9a-f])([0-9a-f])/i', '\\1\\1\\2\\2\\3\\3', $supplied_hex );
				} else {
					// trigger_error( "Invalid hex color value", E_USER_ERROR );
					return $supplied_hex;
				}
				break;
			case 6:
				if ( ! preg_match( '/^[0-9a-f]{2}[0-9a-f]{2}[0-9a-f]{2}$/i', $supplied_hex ) ) {
					// trigger_error( "Invalid hex color value", E_USER_ERROR );
					return $supplied_hex;
				}
				break;
			default:
				// trigger_error( "Invalid hex color length", E_USER_ERROR );
				return $supplied_hex;
		}
		// Start shifting
		$RGB_values['R'] = hexdec( $supplied_hex[0] . $supplied_hex[1] );
		$RGB_values['G'] = hexdec( $supplied_hex[2] . $supplied_hex[3] );
		$RGB_values['B'] = hexdec( $supplied_hex[4] . $supplied_hex[5] );

		foreach ( $RGB_values as $c => $v ) {
			switch ( $shift_method ) {
				case '-':
					$amount = round( ( ( 255 - $v ) / 100 ) * $percentage ) + $v;
					break;
				case '+':
					$amount = $v - round( ( $v / 100 ) * $percentage );
					break;
				default:
					// trigger_error( "Oops. Unexpected shift method", E_USER_ERROR );
					return $supplied_hex;
			}

			$shifted_hex_value .= $current_value = (
			strlen( $decimal_to_hex = dechex( $amount ) ) < 2
			) ? '0' . $decimal_to_hex : $decimal_to_hex;
		}

		return '#' . $shifted_hex_value;
	}

	/**
	 Returns list of HTML tags allowed in HTML fields for use in declaration of wp_kset field validation.

	 Deliberately allows class and ID declarations to assist with custom CSS styling.
	 To customise further, see the excellent article at: http://ottopress.com/2010/wp-quickie-kses/
	 */
	public static function allowed_html() {
		$allowed_html = array(
			// Allowed:		<a href="" id="" class="" title="" target="">...</a>
			// Not allowed:	<a href="javascript(...);">...</a>
			'a'      => array(
				'href'   => array(),
				'id'     => array(),
				'class'  => array(),
				'title'  => array(),
				'target' => array(),
				'rel'    => array(),
				'style'  => array(),
			),
			'b'      => array(),
			'br'     => array(
				'id'    => array(),
				'class' => array(),
				'style' => array(),
			),
			'div'    => array(
				'id'    => array(),
				'class' => array(),
				'style' => array(),
			),
			'em'     => array(
				'id'    => array(),
				'class' => array(),
				'style' => array(),
			),
			'i'      => array(),
			'img'    => array(
				'src'   => array(),
				'id'    => array(),
				'class' => array(),
				'alt'   => array(),
				'style' => array(),
			),
			'p'      => array(
				'id'    => array(),
				'class' => array(),
				'style' => array(),
			),
			'span'   => array(
				'id'    => array(),
				'class' => array(),
				'style' => array(),
			),
			'strong' => array(
				'id'    => array(),
				'class' => array(),
				'style' => array(),
			),
			'label'  => array(
				'id'    => array(),
				'class' => array(),
				'style' => array(),
			),
		);
		$html5_tags   = array( 'article', 'section', 'aside', 'details', 'figcaption', 'figure', 'footer', 'header', 'main', 'mark', 'nav', 'summary', 'time' );
		foreach ( $html5_tags as $html5_tag ) {
			$allowed_html[ $html5_tag ] = array(
				'id'    => array(),
				'class' => array(),
				'style' => array(),
			);
		}
		return $allowed_html;
	}


	/**
	 Returns list of allowed protocols, for use in declaration of wp_kset field validation.
	 N.B. JavaScript is specifically disallowed for security reasons.
	 Don't even trust your own database, as you don't know if another plugin has written to your settings.
	 */
	public static function allowed_protocols() {
		// Additional options: 'ftp', 'ftps', 'mailto', 'news', 'irc', 'gopher', 'nntp', 'feed', 'telnet'
		return array( 'http', 'https' );
	}


	/**
	 * Check if GTM is active
	 **/
	public static function cli_is_active_GTM() {
		if ( in_array( 'duracelltomi-google-tag-manager/duracelltomi-google-tag-manager-for-wordpress.php', apply_filters( 'active_plugins', get_option( 'active_plugins' ) ) ) ) {
			return true;
		}
	}
	/*
	*
	* Patch script while updating versions
	*/
	public static function cli_patches() {
		$options = self::get_settings();

		// ========bar as widget=========@since 1.7.1
		if ( $options['cookie_bar_as'] == 'banner' && $options['as_popup'] == true ) {
			$options['cookie_bar_as']            = 'popup';
			$options['as_popup']                 = false;
			$options['popup_showagain_position'] = $options['notify_position_vertical'] . '-' . $options['notify_position_horizontal'];
			update_option( CLI_SETTINGS_FIELD, $options );
		}

		// ========reject button missing issue=========@since 1.6.7
		$message_bar_text = $options['notify_message'];
		// user turned on the reject button with his previous settings
		if ( isset( $options['is_reject_on'] ) && $options['is_reject_on'] == true ) {
			if ( strpos( $message_bar_text, 'cookie_reject' ) === false ) {
				$pattern = get_shortcode_regex();
				if ( preg_match_all( '/' . $pattern . '/s', $message_bar_text, $matches ) ) {
					$shortcode_arr = $matches[0];
					foreach ( $shortcode_arr as $shrtcode ) {
						if ( strpos( $shrtcode, 'cookie_button' ) !== false ) {

							$options['notify_message'] = str_replace( $shrtcode, $shrtcode . ' [cookie_reject]', $message_bar_text );
							$options['is_reject_on']   = false;
							update_option( CLI_SETTINGS_FIELD, $options );
							break;
						}
					}
				}
			} else {
				$options['is_reject_on'] = false;
				update_option( CLI_SETTINGS_FIELD, $options );
			}
		}
		// ---------reject button missing issue------------

		// bar heading text issue @since 1.6.7
		$bar_version         = '1.6.6';
		$bar_heading_version = get_option( 'cli_heading_version' );
		if ( $bar_heading_version != $bar_version ) {
			if ( isset( $options['bar_heading_text'] ) && $options['bar_heading_text'] == 'This website uses cookies' ) {
				$options['bar_heading_text'] = '';
				update_option( CLI_SETTINGS_FIELD, $options );
				update_option( 'cli_heading_version', $bar_version );
			}
		}
	}
	/**
	 * Check whether JS blocking is active or not
	 *
	 * @since  1.8.9
	 * @return bool
	 */
	public static function wt_cli_is_js_blocking_active() {

		$js_blocking_enabled = false;
		$js_option           = self::get_js_option();
		if ( $js_option === true && ! self::is_divi_enabled() ) {
			$js_blocking_enabled = true;
		}
		return apply_filters( 'wt_cli_enable_js_blocking', $js_blocking_enabled );
	}
	/**
	 * JS blocker will be disabled by default for existing customer
	 *
	 * @since  1.8.9
	 * @return bool
	 */
	public static function check_for_upgrade() {
		$plugin_settings = get_option( CLI_SETTINGS_FIELD );
		if ( $plugin_settings === false ) {

			$transient_value = get_transient( '_wt_cli_first_time_activation' );
			if ( $transient_value === false ) {
				set_transient( '_wt_cli_first_time_activation', true, 30 );
			}
			return true;
		}
		return false;
	}
	public static function maybe_first_time_install() {
		$maybe_first_time     = false;
		$activation_transient = wp_validate_boolean( get_transient( '_wt_cli_first_time_activation' ) );
		if ( $activation_transient === true ) {
			$maybe_first_time = true;
		}
		return $maybe_first_time;
	}
	/**
	 * Return js options
	 *
	 * @since  1.8.9
	 * @return bool,string
	 */
	public static function get_js_option() {

		$js_option = false;
		$js_option = get_option( 'cookielawinfo_js_blocking' );
		if ( isset( $js_option ) && $js_option === 'yes' ) {
			return true;
		}
		return false;
	}

	/**
	 * Check whether DIVI builder is active or not
	 *
	 * @since  2.0.4
	 * @return bool
	 */
	public static function is_divi_enabled() {

		return isset( $_GET['et_fb'] ) ? true : false;
	}

}