# automatic-youtube-gallery/trunk/admin/settings.php

Automatic YouTube Gallery – Embed Auto-Updating YouTube Video Galleries, Feeds, Playlists & Channels, version trunk. 776 lines.

- Page: https://pluginprobe.com/plugins/automatic-youtube-gallery/trunk/code/admin/settings.php
- Raw: https://pluginprobe.com/plugins/automatic-youtube-gallery/trunk/raw/admin/settings.php
- Modified: 2026-07-13T07:30:46+00:00

Line numbers below start at 1. Link to a line or a range by appending a fragment to the
page URL, for example `https://pluginprobe.com/plugins/automatic-youtube-gallery/trunk/code/admin/settings.php#L10-L20`.

```php
<?php

/**
 * Plugin Settings.
 *
 * @link    https://plugins360.com
 * @since   1.0.0
 *
 * @package Automatic_YouTube_Gallery
 */

// Exit if accessed directly
if ( ! defined( 'WPINC' ) ) {
	die;
}

/**
 * AYG_Admin_Settings class.
 *
 * @since 1.0.0
 */
class AYG_Admin_Settings {

	/**
     * Settings tabs array.
     *
	 * @since  1.0.0
	 * @access protected
     * @var    array
     */
	protected $tabs = array();
	
	/**
     * Settings sections array.
     *
	 * @since  1.0.0
	 * @access protected
     * @var    array
     */
	protected $sections = array();
	
	/**
     * Settings fields array
     *
	 * @since  1.0.0
	 * @access protected
     * @var    array
     */
	protected $fields = array();
	
	/**
	 * Add "Settings" menu.
	 *
	 * @since 1.0.0
	 */
	public function admin_menu() {	
        add_submenu_page(
			'automatic-youtube-gallery',
			__( 'Settings', 'automatic-youtube-gallery' ),
			__( 'Settings', 'automatic-youtube-gallery' ),
			'manage_options',
			'automatic-youtube-gallery-settings',
			array( $this, 'display_settings_form' )
		);
	}

	/**
	 * Display settings form.
	 *
	 * @since 1.0.0
	 */
	public function display_settings_form() {
		require_once AYG_DIR . 'admin/templates/settings.php';		
	}

	/**
	 * Initiate settings.
	 *
	 * @since 1.0.0
	 */
	public function admin_init() {
		$this->tabs     = $this->get_tabs();
        $this->sections = $this->get_sections();
        $this->fields   = $this->get_fields();
		
        // Initialize settings
		$this->initialize_settings();		
	}

	/**
     * Get settings tabs.
     *
	 * @since  1.0.0
     * @return array $tabs Setting tabs array.
     */
    public function get_tabs() {	
		$tabs = array(
            'general'    => __( 'General', 'automatic-youtube-gallery' ),
            'gallery'    => __( 'Gallery', 'automatic-youtube-gallery' ),
            'player'     => __( 'Player', 'automatic-youtube-gallery' ),
            'livestream' => __( 'Livestream', 'automatic-youtube-gallery' ),
            'privacy'    => __( 'GDPR Compliance', 'automatic-youtube-gallery' )
		);
		
		return apply_filters( 'ayg_settings_tabs', $tabs );	
	}

	/**
     * Get settings sections.
     *
	 * @since  1.0.0
     * @return array $sections Setting sections array.
     */
    public function get_sections() {		
		$sections = array(
			array(
                'id'          => 'ayg_general_settings',
                'title'       => __( 'General Settings', 'automatic-youtube-gallery' ),
                'description' => '',
                'tab'         => 'general',
                'page'        => 'ayg_general_settings'
            ),
            array(
                'id'          => 'ayg_strings_settings',
                'title'       => __( 'Button & Link Labels', 'automatic-youtube-gallery' ),
                'description' => '',
                'tab'         => 'general',
                'page'        => 'ayg_strings_settings'
            ),
            array(
                'id'          => 'ayg_gallery_settings',
                'title'       => __( 'Gallery Settings', 'automatic-youtube-gallery' ),
                'description' => '',
				'tab'         => 'gallery',
                'page'        => 'ayg_gallery_settings'
            ),
            array(
                'id'          => 'ayg_player_settings',
                'title'       => __( 'Player Settings', 'automatic-youtube-gallery' ),
                'description' => '',
				'tab'         => 'player',
                'page'        => 'ayg_player_settings'
            ),
            array(
                'id'          => 'ayg_livestream_settings',
                'title'       => __( 'Livestream Settings', 'automatic-youtube-gallery' ),
                'description' => '',
				'tab'         => 'livestream',
                'page'        => 'ayg_livestream_settings'
            ),
            array(
                'id'          => 'ayg_privacy_settings',
                'title'       => __( 'GDPR Compliance', 'automatic-youtube-gallery' ),
                'description' => '',
                'tab'         => 'privacy',
                'page'        => 'ayg_privacy_settings'
            ),				
        );
		
		return apply_filters( 'ayg_settings_sections', $sections );		
	}

	/**
     * Get settings fields.
     *
	 * @since     1.0.0
     * @return    array    $fields    Setting fields array.
     */
    public function get_fields() {
        // General Settings
        $fields['ayg_general_settings']	= array(
            array(
                'name'              => 'api_key',
                'label'             => __( 'YouTube API Key', 'automatic-youtube-gallery' ),
                'description'       => sprintf(
					__( 'A free YouTube Data API key is required to fetch your videos. <a href="%s" target="_blank" rel="noopener noreferrer">Get your API key</a> in just a few minutes.', 'automatic-youtube-gallery' ),
					'https://plugins360.com/automatic-youtube-gallery/how-to-get-youtube-api-key/'
				),
                'type'              => 'text',
                'sanitize_callback' => 'sanitize_text_field'
            ),
            array(
                'name'              => 'force_load_assets', 
                'label'             => __( 'Force Load Plugin Assets', 'automatic-youtube-gallery' ), 
                'description'       => __( 'Force-load the plugin\'s CSS and/or JavaScript files on all front-end pages. Enable this option only if layouts do not render correctly due to page builders or theme conflicts.', 'automatic-youtube-gallery' ),
                'type'              => 'multicheck', 
                'options'           => array( 
                    'css' => __( 'Force load CSS', 'automatic-youtube-gallery' ), 
                    'js'  => __( 'Force load JavaScript', 'automatic-youtube-gallery' ), 
                ), 
                'sanitize_callback' => 'ayg_sanitize_array' 
            ),
            array(
                'name'              => 'lazyload',
                'label'             => __( 'Lazy Load Images / Videos', 'automatic-youtube-gallery' ),
                'description'       => __( 'Check this option to lazy load images and videos added by the plugin to enhance page load speed and performance. If you experience any issues with content display, try disabling this option.', 'automatic-youtube-gallery' ),
                'type'              => 'checkbox',
                'sanitize_callback' => 'intval'
            ),
            array(
                'name'              => 'development_mode',
                'label'             => __( 'Development Mode', 'automatic-youtube-gallery' ),
                'description'       => __( 'Check this option to stop caching API results. We strongly recommend disabling this option when your site is live.', 'automatic-youtube-gallery' ),
                'type'              => 'checkbox',
                'sanitize_callback' => 'intval'
            )
        );

        // Strings Settings
        $fields['ayg_strings_settings'] = array(
            array(
                'name'              => 'more_button_label',
                'label'             => __( 'More Button Label', 'automatic-youtube-gallery' ),
                'description'       => __( 'Text for the "Load More" button when pagination type is set to "More Button".', 'automatic-youtube-gallery' ),
                'type'              => 'text',
                'sanitize_callback' => 'sanitize_text_field'
            ),
            array(
                'name'              => 'previous_button_label',
                'label'             => __( 'Previous Button Label', 'automatic-youtube-gallery' ),
                'description'       => __( 'Text for the "Previous" button when pagination type is set to "Pager".', 'automatic-youtube-gallery' ),
                'type'              => 'text',
                'sanitize_callback' => 'sanitize_text_field'
            ),
            array(
                'name'              => 'next_button_label',
                'label'             => __( 'Next Button Label', 'automatic-youtube-gallery' ),
                'description'       => __( 'Text for the "Next" button when pagination type is set to "Pager".', 'automatic-youtube-gallery' ),
                'type'              => 'text',
                'sanitize_callback' => 'sanitize_text_field'
            ),
            array(
                'name'              => 'show_more_label',
                'label'             => __( 'Show More Label', 'automatic-youtube-gallery' ),
                'description'       => __( 'Text for the "Show More" link that expands the video description below the player.', 'automatic-youtube-gallery' ),
                'type'              => 'text',
                'sanitize_callback' => 'sanitize_text_field'
            ),
            array(
                'name'              => 'show_less_label',
                'label'             => __( 'Show Less Label', 'automatic-youtube-gallery' ),
                'description'       => __( 'Text for the "Show Less" link that collapses the video description below the player.', 'automatic-youtube-gallery' ),
                'type'              => 'text',
                'sanitize_callback' => 'sanitize_text_field'
            )
        );

        // Gallery Settings
        $gallery_settings = ayg_get_gallery_settings_fields();

        $gallery_settings[] = array(
			'name'              => 'scroll_top_offset',
			'label'             => __( 'Page Scroll Top Offset', 'automatic-youtube-gallery' ),
			'description'       => __( 'Set the top offset in pixels for scrolling to the video player after a thumbnail is clicked. Enter <code>-1</code> to disable automatic scrolling.', 'automatic-youtube-gallery' ),
			'type'              => 'text',
			'sanitize_callback' => 'ayg_sanitize_int'
		);

        $fields['ayg_gallery_settings'] = $gallery_settings;

        // Player Settings
        $player_settings = array(
            array(
                'name'              => 'player_type',
                'label'             => __( 'Player Type', 'automatic-youtube-gallery' ),
                'description'       => __( 'Choose how videos are embedded. "Native YouTube Embed" uses YouTube\'s standard iframe, while "Custom Video Player" provides a lightweight, styled player with more control over its appearance.', 'automatic-youtube-gallery' ),
                'type'              => 'radio',
                'options'           => array(
                    'youtube' => __( 'Native YouTube Embed', 'automatic-youtube-gallery' ),
                    'custom'  => __( 'Custom Video Player', 'automatic-youtube-gallery' )			
                ),
                'sanitize_callback' => 'sanitize_text_field'
            ),
            array(
                'name'              => 'player_color',
                'label'             => __( 'Player Color', 'automatic-youtube-gallery' ),	
                'description'       => __( 'Set the theme color for your video player.', 'automatic-youtube-gallery' ),		
                'type'              => 'color',
                'sanitize_callback' => 'sanitize_text_field'
            )
        );

        $player_settings = array_merge( $player_settings, ayg_get_player_settings_fields() );

        $player_settings[] = array(
			'name'              => 'privacy_enhanced_mode',
			'label'             => __( 'Privacy Enhanced Mode', 'automatic-youtube-gallery' ),
			'description'       => __( "Check this option to prevent YouTube from leaving tracking cookies on your visitor's browsers unless they actually play the videos. Please uncheck this option if you see errors while testing your playlist embeds or watching your videos on mobile.", 'automatic-youtube-gallery' ),
			'type'              => 'checkbox',
			'sanitize_callback' => 'intval'
		);

        $player_settings[] = array(
			'name'              => 'origin',
			'label'             => __( 'Extra Player Security', 'automatic-youtube-gallery' ),
			'description'       => __( 'Check this option to add site origin information with each embed code as an extra security measure. In YouTube\'s own words, checking this option "protects against malicious third-party JavaScript being injected into your page and hijacking control of your YouTube player."', 'automatic-youtube-gallery' ),
			'type'              => 'checkbox',
			'sanitize_callback' => 'intval'
		);

        $fields['ayg_player_settings'] = $player_settings;

        // Livestream Settings
        $fields['ayg_livestream_settings'] = array(
            array(
                'name'              => 'fallback_message',
                'label'             => __( 'Fallback Message', 'automatic-youtube-gallery' ),
                'description'       => __( 'Enter your Custom HTML message that should be displayed when there is no video streaming live.', 'automatic-youtube-gallery' ),
                'type'              => 'wysiwyg',
                'sanitize_callback' => 'wp_kses_post'
            )
        );

        // Privacy Settings
        $fields['ayg_privacy_settings'] = array(                
            array(
                'name'              => 'cookie_consent',
                'label'             => __( 'Cookie Consent', 'automatic-youtube-gallery' ),
                'description'       => __( 'Check this option to ask for viewer consent to store YouTube cookies before showing videos.', 'automatic-youtube-gallery' ),
                'type'              => 'checkbox',
                'sanitize_callback' => 'intval'
            ),
            array(
                'name'              => 'consent_message',
                'label'             => __( 'Consent Message', 'automatic-youtube-gallery' ),
                'description'       => __( 'The message shown to visitors asking for their permission before YouTube videos and cookies are loaded.', 'automatic-youtube-gallery' ),
                'type'              => 'wysiwyg',
                'sanitize_callback' => 'wp_kses_post'
            ),
            array(
                'name'              => 'button_label',
                'label'             => __( 'Consent Button Label', 'automatic-youtube-gallery' ),
                'description'       => __( 'Text for the button visitors click to accept and load the video (e.g. "Accept" or "Load video").', 'automatic-youtube-gallery' ),
                'type'              => 'text',
                'sanitize_callback' => 'sanitize_text_field'
            )
		);
		
		return apply_filters( 'ayg_settings_fields', $fields );		
	}

	/**
     * Initialize and registers the settings sections and fields to WordPress.
     *
     * @since 1.0.0
     */
    public function initialize_settings() {	
        // Register settings sections & fields
        foreach ( $this->sections as $section ) {
            $page_hook = isset( $section['page'] ) ? $section['page'] : $section['id'];
			
			// Sections
            if ( false == get_option( $section['id'] ) ) {
                add_option( $section['id'] );
            }
			
            if ( isset( $section['description'] ) && ! empty( $section['description'] ) ) {
                $callback = array( $this, 'settings_section_callback' );
            } elseif ( isset( $section['callback'] ) ) {
                $callback = $section['callback'];
            } else {
                $callback = null;
            }
			
            add_settings_section( $section['id'], $section['title'], $callback, $page_hook );
			
			// Fields			
			$fields = $this->fields[ $section['id'] ];
			
			foreach ( $fields as $option ) {			
                $name     = $option['name'];
                $type     = isset( $option['type'] ) ? $option['type'] : 'text';
                $label    = isset( $option['label'] ) ? $option['label'] : '';
                $callback = isset( $option['callback'] ) ? $option['callback'] : array( $this, 'callback_' . $type );				
                $args     = array(
                    'id'                => $name,
                    'class'             => isset( $option['class'] ) ? $option['class'] : $name,
                    'label_for'         => "{$section['id']}[{$name}]",
                    'description'       => isset( $option['description'] ) ? $option['description'] : '',
                    'name'              => $label,
                    'section'           => $section['id'],
                    'size'              => isset( $option['size'] ) ? $option['size'] : null,
                    'options'           => isset( $option['options'] ) ? $option['options'] : '',
                    'sanitize_callback' => isset( $option['sanitize_callback'] ) ? $option['sanitize_callback'] : '',
                    'type'              => $type,
                    'placeholder'       => isset( $option['placeholder'] ) ? $option['placeholder'] : '',
                    'min'               => isset( $option['min'] ) ? $option['min'] : '',
                    'max'               => isset( $option['max'] ) ? $option['max'] : '',
                    'step'              => isset( $option['step'] ) ? $option['step'] : ''					
                );
				
                add_settings_field( "{$section['id']}[{$name}]", $label, $callback, $page_hook, $section['id'], $args );
            }
			
			// Creates our settings in the options table
        	register_setting( $page_hook, $section['id'], array( $this, 'sanitize_options' ) );			
        }		
    }
    
    /**
 	 * Displays a section description.
 	 *
	 * @since 1.0.0
	 * @param array $args Settings section args.
 	 */
	public function settings_section_callback( $args ) {
        foreach ( $this->sections as $section ) {
            if ( $section['id'] == $args['id'] ) {
                printf( '<div class="inside">%s</div>', wp_kses_post( $section['description'] ) ); 
                break;
            }
        }
    }
	
	/**
     * Displays a text field for a settings field.
     *
	 * @since 1.0.0
     * @param array $args Settings field args.
     */
    public function callback_text( $args ) {	
        $value       = esc_attr( $this->get_option( $args['id'], $args['section'], '' ) );
        $size        = isset( $args['size'] ) && ! is_null( $args['size'] ) ? $args['size'] : 'regular-text';
        $type        = isset( $args['type'] ) ? $args['type'] : 'text';
        $placeholder = empty( $args['placeholder'] ) ? '' : ' placeholder="' . $args['placeholder'] . '"';
		
        $html        = sprintf( '<input type="%1$s" class="%2$s" id="%3$s[%4$s]" name="%3$s[%4$s]" value="%5$s"%6$s/>', $type, $size, $args['section'], $args['id'], $value, $placeholder );
        $html       .= $this->get_field_description( $args );
		
        echo $html;		
	}
	
	/**
     * Displays a url field for a settings field.
     *
	 * @since 1.0.0
     * @param array $args Settings field args.
     */
    public function callback_url( $args ) {
        $this->callback_text( $args );
	}
	
	/**
     * Displays a number field for a settings field.
     *
	 * @since 1.0.0
     * @param array $args Settings field args.
     */
    public function callback_number( $args ) {	
        $value       = esc_attr( $this->get_option( $args['id'], $args['section'], 0 ) );
        $size        = isset( $args['size'] ) && ! is_null( $args['size'] ) ? $args['size'] : 'regular-text';
        $type        = isset( $args['type'] ) ? $args['type'] : 'number';
        $placeholder = empty( $args['placeholder'] ) ? '' : ' placeholder="' . $args['placeholder'] . '"';
        $min         = empty( $args['min'] ) ? '' : ' min="' . $args['min'] . '"';
        $max         = empty( $args['max'] ) ? '' : ' max="' . $args['max'] . '"';
        $step        = empty( $args['max'] ) ? '' : ' step="' . $args['step'] . '"';
		
        $html        = sprintf( '<input type="%1$s" class="%2$s" id="%3$s[%4$s]" name="%3$s[%4$s]" value="%5$s"%6$s%7$s%8$s%9$s/>', $type, $size, $args['section'], $args['id'], $value, $placeholder, $min, $max, $step );
        $html       .= $this->get_field_description( $args );
		
        echo $html;		
	}
	
	/**
     * Displays a checkbox for a settings field.
     *
	 * @since 1.0.0
     * @param array $args Settings field args.
     */
    public function callback_checkbox( $args ) {	
        $value = esc_attr( $this->get_option( $args['id'], $args['section'], 0 ) );
		
        $html  = '<fieldset>';
        $html  .= sprintf( '<label for="%1$s[%2$s]">', $args['section'], $args['id'] );
        $html  .= sprintf( '<input type="hidden" name="%1$s[%2$s]" value="0" />', $args['section'], $args['id'] );
        $html  .= sprintf( '<input type="checkbox" class="checkbox" id="%1$s[%2$s]" name="%1$s[%2$s]" value="1" %3$s />', $args['section'], $args['id'], checked( $value, 1, false ) );
        $html  .= sprintf( '%1$s</label>', $args['description'] );
        $html  .= '</fieldset>';
		
        echo $html;		
	}
	
	/**
     * Displays a multicheckbox for a settings field.
     *
     * @since 1.0.0
     * @param array $args Settings field args.
     */
    public function callback_multicheck( $args ) {	
        $value = $this->get_option( $args['id'], $args['section'], array() );
		
        $html  = '<fieldset>';
        $html .= sprintf( '<input type="hidden" name="%1$s[%2$s]" value="" />', $args['section'], $args['id'] );
        foreach ( $args['options'] as $key => $label ) {
            $checked  = in_array( $key, $value ) ? 'checked="checked"' : '';
            $html    .= sprintf( '<label for="%1$s[%2$s][%3$s]">', $args['section'], $args['id'], $key );
            $html    .= sprintf( '<input type="checkbox" class="checkbox" id="%1$s[%2$s][%3$s]" name="%1$s[%2$s][%3$s]" value="%3$s" %4$s />', $args['section'], $args['id'], $key, $checked );
            $html    .= sprintf( '%1$s</label><br>',  $label );
        }
        $html .= $this->get_field_description( $args );
        $html .= '</fieldset>';
		
        echo $html;		
	}
	
	/**
     * Displays a radio button for a settings field.
     *
     * @since 1.0.0
     * @param array $args Settings field args.
     */
    public function callback_radio( $args ) {	
        $value = $this->get_option( $args['id'], $args['section'], '' );
		
        $html  = '<fieldset>';
        foreach ( $args['options'] as $key => $label ) {
            $html .= sprintf( '<label for="%1$s[%2$s][%3$s]">',  $args['section'], $args['id'], $key );
            $html .= sprintf( '<input type="radio" class="radio" id="%1$s[%2$s][%3$s]" name="%1$s[%2$s]" value="%3$s" %4$s />', $args['section'], $args['id'], $key, checked( $value, $key, false ) );
            $html .= sprintf( '%1$s</label><br>', $label );
        }
        $html .= $this->get_field_description( $args );
        $html .= '</fieldset>';
		
        echo $html;		
	}
	
	/**
     * Displays a selectbox for a settings field.
     *
     * @since 1.0.0
     * @param array $args Settings field args.
     */
    public function callback_select( $args ) {	
        $value = esc_attr( $this->get_option( $args['id'], $args['section'], '' ) );
        $size  = isset( $args['size'] ) && ! is_null( $args['size'] ) ? $args['size'] : 'regular-text';
		
        $html  = sprintf( '<select class="%1$s" name="%2$s[%3$s]" id="%2$s[%3$s]">', $size, $args['section'], $args['id'] );
        foreach ( $args['options'] as $key => $label ) {
            $html .= sprintf( '<option value="%s"%s>%s</option>', $key, selected( $value, $key, false ), $label );
        }
        $html .= sprintf( '</select>' );
        $html .= $this->get_field_description( $args );
		
        echo $html;		
	}
	
	/**
     * Displays a textarea for a settings field.
     *
     * @since 1.0.0
     * @param array $args Settings field args.
     */
    public function callback_textarea( $args ) {	
        $value       = esc_textarea( $this->get_option( $args['id'], $args['section'], '' ) );
        $size        = isset( $args['size'] ) && ! is_null( $args['size'] ) ? $args['size'] : 'regular-text';
        $placeholder = empty( $args['placeholder'] ) ? '' : ' placeholder="'.$args['placeholder'].'"';
		
        $html        = sprintf( '<textarea rows="5" cols="55" class="%1$s" id="%2$s[%3$s]" name="%2$s[%3$s]"%4$s>%5$s</textarea>', $size, $args['section'], $args['id'], $placeholder, $value );
        $html       .= $this->get_field_description( $args );
		
        echo $html;		
	}
	
	/**
     * Displays the html for a settings field.
     *
     * @since 1.0.0
     * @param array $args Settings field args.
     */
    public function callback_html( $args ) {
        echo $this->get_field_description( $args );
	}
	
	/**
     * Displays a rich text textarea for a settings field.
     *
     * @since 1.0.0
     * @param array $args Settings field args.
     */
    public function callback_wysiwyg( $args ) {	
        $value = $this->get_option( $args['id'], $args['section'], '' );
        $size  = isset( $args['size'] ) && ! is_null( $args['size'] ) ? $args['size'] : '500px';
		
        echo '<div style="max-width: ' . $size . ';">';
        $editor_settings = array(
            'teeny'         => true,
            'textarea_name' => $args['section'] . '[' . $args['id'] . ']',
            'textarea_rows' => 10
        );
        if ( isset( $args['options'] ) && is_array( $args['options'] ) ) {
            $editor_settings = array_merge( $editor_settings, $args['options'] );
        }
        wp_editor( $value, $args['section'] . '-' . $args['id'], $editor_settings );
        echo '</div>';
        echo $this->get_field_description( $args );		
	}
	
	/**
     * Displays a file upload field for a settings field.
     *
     * @since 1.0.0
     * @param array $args Settings field args.
     */
    public function callback_file( $args ) {	
        $value = esc_attr( $this->get_option( $args['id'], $args['section'], '' ) );
        $size  = isset( $args['size'] ) && ! is_null( $args['size'] ) ? $args['size'] : 'regular-text';
        $id    = $args['section'] . '[' . $args['id'] . ']';
        $label = isset( $args['options']['button_label'] ) ? $args['options']['button_label'] : __( 'Choose File', 'automatic-youtube-gallery' );
		
        $html  = sprintf( '<input type="text" class="%1$s ayg-settings-url" id="%2$s[%3$s]" name="%2$s[%3$s]" value="%4$s"/>', $size, $args['section'], $args['id'], $value );
        $html .= '<input type="button" class="button ayg-button-upload-media" value="' . $label . '" />';
        $html .= $this->get_field_description( $args );
		
        echo $html;		
	}
	
	/**
     * Displays a password field for a settings field.
     *
     * @since 1.0.0
     * @param array $args Settings field args.
     */
    public function callback_password( $args ) {	
        $value = esc_attr( $this->get_option( $args['id'], $args['section'], '' ) );
        $size  = isset( $args['size'] ) && ! is_null( $args['size'] ) ? $args['size'] : 'regular-text';
		
        $html  = sprintf( '<input type="password" class="%1$s" id="%2$s[%3$s]" name="%2$s[%3$s]" value="%4$s"/>', $size, $args['section'], $args['id'], $value );
        $html .= $this->get_field_description( $args );
		
        echo $html;		
	}
	
	/**
     * Displays a color picker field for a settings field.
     *
     * @since 1.0.0
     * @param array $args Settings field args.
     */
    public function callback_color( $args ) {	
        $value = esc_attr( $this->get_option( $args['id'], $args['section'], '#ffffff' ) );
        $size  = isset( $args['size'] ) && ! is_null( $args['size'] ) ? $args['size'] : 'regular-text';
		
        $html  = sprintf( '<input type="text" class="%1$s ayg-color-picker" id="%2$s[%3$s]" name="%2$s[%3$s]" value="%4$s" data-default-color="%5$s" />', $size, $args['section'], $args['id'], $value, '#ffffff' );
        $html .= $this->get_field_description( $args );
		
        echo $html;		
	}
	
	/**
     * Displays a select box for creating the pages select box.
     *
     * @since 1.0.0
     * @param array $args Settings field args.
     */
    public function callback_pages( $args ) {	
        $dropdown_args = array(
			'show_option_none'  => '-- ' . __( 'Select a page', 'automatic-youtube-gallery' ) . ' --',
			'option_none_value' => -1,
            'selected'          => esc_attr($this->get_option($args['id'], $args['section'], -1 ) ),
            'name'              => $args['section'] . '[' . $args['id'] . ']',
            'id'                => $args['section'] . '[' . $args['id'] . ']',
            'echo'              => 0			
        );
		
        $html  = wp_dropdown_pages( $dropdown_args );
		$html .= $this->get_field_description( $args );
		
        echo $html;		
	}
	
	/**
     * Get field description for display.
     *
	 * @since 1.0.0
     * @param array $args Settings field args.
     */
    public function get_field_description( $args ) {	
        if ( ! empty( $args['description'] ) ) {
            $description = sprintf( '<p class="description">%s</p>', $args['description'] );
        } else {
            $description = '';
        }
		
        return $description;		
	}
	
	/**
     * Sanitize callback for Settings API.
     *
	 * @since  1.0.0
     * @param  array $options The unsanitized collection of options.
     * @return                The collection of sanitized values.
     */
    public function sanitize_options( $options ) {	
        if ( ! $options ) {
            return $options;
        }
		
        foreach ( $options as $option_slug => $option_value ) {		
            $sanitize_callback = $this->get_sanitize_callback( $option_slug );
			
            // If callback is set, call it
            if ( $sanitize_callback ) {
                $options[ $option_slug ] = call_user_func( $sanitize_callback, $option_value );
                continue;
            }			
        }
		
        return $options;		
	}
	
	/**
     * Get sanitization callback for given option slug.
     *
	 * @since  1.0.0
     * @param  string $slug Option slug.
     * @return mixed        String or bool false.
     */
    public function get_sanitize_callback( $slug = '' ) {	
        if ( empty( $slug ) ) {
            return false;
        }
		
        // Iterate over registered fields and see if we can find proper callback
        foreach ( $this->fields as $section => $options ) {
            foreach ( $options as $option ) {
                if ( $option['name'] != $slug ) {
                    continue;
                }
				
                // Return the callback name
                return isset( $option['sanitize_callback'] ) && is_callable( $option['sanitize_callback'] ) ? $option['sanitize_callback'] : false;
            }
        }
		
        return false;		
    }    

    /**
     * Get the value of a settings field
     *
	 * @since  1.0.0
     * @param  string $option  Settings field name.
     * @param  string $section The section name this field belongs to
     * @param  string $default Default text if it's not found.
     * @return string
     */
    public function get_option( $option, $section, $default = '' ) {	
        $options = get_option( $section );
		
        if ( ! empty( $options[ $option ] ) ) {
            return $options[ $option ];
        }
		
        return $default;		
    }
    
    /**
	 * Dump our plugin transients.
	 *
	 * @since 1.3.0
	 */
	public function ajax_callback_delete_cache() {
        check_ajax_referer( 'ayg_ajax_nonce', 'security' );

        if ( ! current_user_can( 'manage_options' ) ) {
			wp_send_json_error( array( 'message' => __( 'Permission denied.', 'automatic-youtube-gallery' ) ) );
		}

        ayg_delete_cache();
        
        wp_send_json_success();
    }

}

```