finlabsindia/wp-content/plugins/jetpack/modules/theme-tools/content-options.php

<?php
/**
 * Content Options.
 *
 * This feature will only be activated for themes that declare their support.
 * This can be done by adding code similar to the following during the
 * 'after_setup_theme' action:
 *
	add_theme_support( 'jetpack-content-options', array(
		'blog-display'       => 'content', // the default setting of the theme: 'content', 'excerpt' or array( 'content', 'excerpt' ) for themes mixing both display.
		'author-bio'         => true, // display or not the author bio: true or false.
		'author-bio-default' => false, // the default setting of the author bio, if it's being displayed or not: true or false (only required if false).
		'masonry'            => '.site-main', // a CSS selector matching the elements that triggers a masonry refresh if the theme is using a masonry layout.
		'post-details'       => array(
			'stylesheet'        => 'themeslug-style', // name of the theme's stylesheet.
			'date'              => '.posted-on', // a CSS selector matching the elements that display the post date.
			'categories'        => '.cat-links', // a CSS selector matching the elements that display the post categories.
			'tags'              => '.tags-links', // a CSS selector matching the elements that display the post tags.
			'author'            => '.byline', // a CSS selector matching the elements that display the post author.
			'comment'           => '.comments-link', // a CSS selector matching the elements that display the comment link.
		),
		'featured-images'    => array(
			'archive'           => true, // enable or not the featured image check for archive pages: true or false.
			'archive-default'   => false, // the default setting of the featured image on archive pages, if it's being displayed or not: true or false (only required if false).
			'post'              => true, // enable or not the featured image check for single posts: true or false.
			'post-default'      => false, // the default setting of the featured image on single posts, if it's being displayed or not: true or false (only required if false).
			'page'              => true, // enable or not the featured image check for single pages: true or false.
			'page-default'      => false, // the default setting of the featured image on single pages, if it's being displayed or not: true or false (only required if false).
			'portfolio'         => true, // enable or not the featured image check for single projects: true or false.
			'portfolio-default' => false, // the default setting of the featured image on single projects, if it's being displayed or not: true or false (only required if false).
			'fallback'          => true, // enable or not the featured image fallback: true or false.
			'fallback-default'  => true, // the default setting for featured image fallbacks: true or false (only required if false)
		),
	) );
 *
 */

/**
 * Activate the Content Options plugin.
 *
 * @uses current_theme_supports()
 */
function jetpack_content_options_init() {
	// If the theme doesn't support 'jetpack-content-options', don't continue.
	if ( ! current_theme_supports( 'jetpack-content-options' ) ) {
		return;
	}

	// Load the Customizer options.
	require( dirname( __FILE__ ) . '/content-options/customizer.php' );

	// Load Blog Display function.
	require( dirname( __FILE__ ) . '/content-options/blog-display.php' );

	// Load Author Bio function.
	require( dirname( __FILE__ ) . '/content-options/author-bio.php' );

	// Load Post Details function.
	require( dirname( __FILE__ ) . '/content-options/post-details.php' );

	// Load Featured Images function.
	if ( jetpack_featured_images_should_load() ) {
		require( dirname( __FILE__ ) . '/content-options/featured-images.php' );
	}

	// Load Featured Images Fallback function.
	if ( jetpack_featured_images_fallback_should_load() ) {
		require( dirname( __FILE__ ) . '/content-options/featured-images-fallback.php' );
	}
}
add_action( 'init', 'jetpack_content_options_init' );

function jetpack_featured_images_get_settings() {
	$options         = get_theme_support( 'jetpack-content-options' );

	$featured_images = ( ! empty( $options[0]['featured-images'] ) ) ? $options[0]['featured-images'] : null;

	$settings        = array(
		'archive'           => ( ! empty( $featured_images['archive'] ) ) ? $featured_images['archive'] : null,
		'post'              => ( ! empty( $featured_images['post'] ) ) ? $featured_images['post'] : null,
		'page'              => ( ! empty( $featured_images['page'] ) ) ? $featured_images['page'] : null,
		'portfolio'         => ( ! empty( $featured_images['portfolio'] ) ) ? $featured_images['portfolio'] : null,
		'archive-default'   => ( isset( $featured_images['archive-default'] ) && false === $featured_images['archive-default'] ) ? '' : 1,
		'post-default'      => ( isset( $featured_images['post-default'] ) && false === $featured_images['post-default'] ) ? '' : 1,
		'page-default'      => ( isset( $featured_images['page-default'] ) && false === $featured_images['page-default'] ) ? '' : 1,
		'portfolio-default' => ( isset( $featured_images['portfolio-default'] ) && false === $featured_images['portfolio-default'] ) ? '' : 1,
		'fallback'          => ( ! empty( $featured_images['fallback'] ) ) ? $featured_images['fallback'] : null,
		'fallback-default'  => ( isset( $featured_images['fallback-default'] ) && false === $featured_images['fallback-default'] ) ? '' : 1,
	);

	$settings        = array_merge( $settings, array(
		'archive-option'   => get_option( 'jetpack_content_featured_images_archive', $settings['archive-default'] ),
		'post-option'      => get_option( 'jetpack_content_featured_images_post', $settings['post-default'] ),
		'page-option'      => get_option( 'jetpack_content_featured_images_page', $settings['page-default'] ),
		'portfolio-option' => get_option( 'jetpack_content_featured_images_portfolio', $settings['portfolio-default'] ),
		'fallback-option'  => get_option( 'jetpack_content_featured_images_fallback', $settings['fallback-default'] ),
	) );

	return $settings;
}

function jetpack_featured_images_should_load() {
	// If the theme doesn't support post thumbnails, don't continue.
	if ( ! current_theme_supports( 'post-thumbnails' ) ) {
		return false;
	}

	$opts = jetpack_featured_images_get_settings();

	// If the theme doesn't support archive, post and page or if all the options are ticked and we aren't in the customizer, don't continue.
	if (
		( true !== $opts['archive'] && true !== $opts['post'] && true !== $opts['page'] )
		|| ( 1 === $opts['archive-option'] && 1 === $opts['post-option'] && 1 === $opts['page-option'] && ! is_customize_preview() )
	) {
		return false;
	}

	return true;
}

function jetpack_featured_images_fallback_should_load() {
	// If the theme doesn't support post thumbnails, don't continue.
	if ( ! current_theme_supports( 'post-thumbnails' ) ) {
		return false;
	}

	$opts = jetpack_featured_images_get_settings();

	// If the theme doesn't support fallback, don't continue.
	if ( true !== $opts['fallback'] ) {
		return false;
	}

	return true;
}