finlabsindia/wp-content/themes/vamtam-consulting/vamtam/classes/overrides.php

<?php

/**
 * Various filters and actions configuring some of the shortcodes
 *
 * @package vamtam/consulting
 */

/**
 * class VamtamOverrides
 */
class VamtamOverrides {

	/**
	 * add filters
	 */
	public static function filters() {
		add_filter( 'excerpt_length', array( __CLASS__, 'excerpt_length' ) );
		add_filter( 'excerpt_more', array( __CLASS__, 'excerpt_more' ) );
		add_filter( 'wp_trim_excerpt', array( __CLASS__, 'prepare_excerpt' ), 1, 2 );

		add_filter( 'wp_title', array( __CLASS__, 'wp_title' ) );

		wp_embed_register_handler( 'vamtam-swf', '#https?://[^\s]+?.swf$#i', array( __CLASS__, 'embed_handler_swf' ) );

		add_filter( 'pre_option_page_for_posts', '__return_zero' );

		add_filter( 'oembed_dataparse', array( __CLASS__, 'oembed_dataparse' ), 90, 3 );

		add_filter( 'nav_menu_css_class', array( __CLASS__, 'nav_menu_css_class' ), 10, 2 );
		add_filter( 'nav_menu_css_class', array( __CLASS__, 'nav_menu_css_class' ), 11, 2 );
		add_filter( 'megamenu_nav_menu_css_class', array( __CLASS__, 'nav_menu_css_class' ), 10, 2 );
		add_filter( 'megamenu_nav_menu_css_class', array( __CLASS__, 'nav_menu_css_class' ), 11, 2 );

		add_action( 'vamtam_body', array( __CLASS__, 'vamtam_splash_screen' ) );

		add_filter( 'wpcf7_form_elements', array( __CLASS__, 'shortcodes_in_cf7' ) );

		add_filter( 'pre_option_vamtam_header-layout', array( __CLASS__, 'header_layout' ) );

		add_action( 'loop_start', array( __CLASS__, 'jetpack_remove_share' ) );

		add_action( 'wp_footer', array( __CLASS__, 'post_siblings' ) );

		add_filter( 'vamtam_customizer_get_options_vamtam_theme', array( __CLASS__, 'customizer_get_options' ) );

		add_filter( 'widget_title', array( __CLASS__, 'widget_title' ), 10, 3 );

		add_filter( 'post_thumbnail_html', array( __CLASS__, 'post_thumbnail_html' ), 20, 5 );
		add_filter( 'vamtam_maybe_lazyload', array( __CLASS__, 'maybe_lazyload' ), 10, 4 );

		add_filter( 'jetpack_tiled_gallery_partial', array( __CLASS__, 'jetpack_tiled_gallery_partial' ), 10, 3 );

		add_filter( 'option_jetpack_active_modules', array( __CLASS__, 'jetpack_active_modules' ) );
	}

	/**
	 * We have alternative implementations of some Jetpack modules which are better integrated with the theme
	 */
	public static function jetpack_active_modules( $modules ) {
		return array_diff( $modules, [
			'infinite-scroll',
			'lazy-images',
		] );
	}

	/**
	 * Override Jetpack's tiled gallery template so that it supports our lazyload implementation
	 */
	public static function jetpack_tiled_gallery_partial( $path, $name, $context ) {
		if ( $name === 'item' ) {
			return locate_template( 'templates/jetpack-tiled-gallery-item.php' );
		}

		return $path;
	}

	public static function post_thumbnail_html( $html, $post_ID, $post_thumbnail_id, $size, $attr ) {
		return self::maybe_lazyload( $html, $post_thumbnail_id, $size );
	}

	/**
	 * [maybe_lazyload description]
	 * @param  string       $html
	 * @param  int          $image_id  attachment id
	 * @param  string|array $size      thumbnail name or [width, height] array
	 * @return string
	 */
	public static function maybe_lazyload( $html, $image_id, $size, $with_wrapper = true ) {
		if ( $html === '' || $GLOBALS['is_IE'] ) {
			return $html;
		}

		if ( is_array( $size ) ) {
			list( $width, $height ) = $size;
		} else {
			list( , $width, $height ) = wp_get_attachment_image_src( $image_id, $size );
		}

		$svg = '<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 ' . esc_attr( $width ) .' ' . esc_attr( $height ) .'" height="' . esc_attr( $height ) . 'px" width="' . esc_attr( $width ) . 'px"/>';

		$wrapped = '';

		if ( $with_wrapper ) {
			$wrapped .= '<div class="vamtam-responsive-wrapper">';
		}

		if ( apply_filters( 'vamtam_enable_image_lazyload', true ) ) {
			$new_srcset = 'srcset="data:image/svg+xml;utf8,' . esc_attr( str_replace( ' ', '%20', $svg ) ) . '"';
			$wrapped .= str_replace( 'srcset=', $new_srcset . ' data-srcset=', $html, $replacements );

			if ( $replacements === 0 ) {
				$wrapped = preg_replace( '/src="([^"]+)"/', 'src="$1" data-srcset="$1" ' . $new_srcset, $wrapped, 1 );
			}
		} else {
			$wrapped .= $html;
		}

		if ( $with_wrapper ) {
			$wrapped .= '</div>';
		}

		return $wrapped;
	}

	public static function widget_title( $title = '', $instance = null, $id_base = null ) {
		if ( ! is_null( $instance ) && $id_base === 'recent-posts' && empty( $instance['title'] ) ) {
			return '';
		}

		return $title;
	}

	public static function unlimited_image_sizes() {
		add_filter( 'wp_calculate_image_sizes', array( __CLASS__, 'wp_calculate_image_sizes' ), 10, 5 );
	}

	public static function limit_image_sizes() {
		remove_filter( 'wp_calculate_image_sizes', array( __CLASS__, 'wp_calculate_image_sizes' ), 10, 5 );
	}

	public static function wp_calculate_image_sizes( $sizes, $size, $image_src, $image_meta, $attachment_id ) {
		return '(min-width: 900px) 50vw, 100vw';
	}

	public static function post_siblings() {
		if ( VamtamTemplates::has_post_siblings_buttons() ) {
			get_template_part( 'templates/post-siblings-links' );
		}
	}

	public static function prepare_excerpt( $text = '', $raw_excerpt ) {
		if ( '' == $raw_excerpt ) {
			$text = get_the_content( '' );

			$text = VamtamTemplates::remove_outer_columns( $text );

			$text = strip_shortcodes( $text );

			/** This filter is documented in wp-includes/post-template.php */
			$text = apply_filters( 'the_content', $text );
			$text = str_replace( ']]>', ']]&gt;', $text );

			$excerpt_length = apply_filters( 'excerpt_length', 40 );

			$excerpt_more = apply_filters( 'excerpt_more', ' [&hellip;]' );

			$text = wp_trim_words( $text, $excerpt_length, $excerpt_more );
		}

		return $text;
	}

	public static function jetpack_remove_share() {
		remove_filter( 'the_content', 'sharing_display',19 );
		remove_filter( 'the_excerpt', 'sharing_display',19 );

		if ( class_exists( 'Jetpack_Likes' ) ) {
			remove_filter( 'the_content', array( Jetpack_Likes::init(), 'post_likes' ), 30, 1 );
		}
	}

	public static function header_layout( $layout ) {
		$logo_type = rd_vamtam_get_option( 'header-logo-type' );

		if ( $logo_type === 'names' ) {
			return 'standard';
		}

		return $layout;
	}

	public static function wp_title( $title ) {
		if ( empty( $title ) && ( is_home() || is_front_page() ) ) {
			$description = get_bloginfo( 'description' );
			return get_bloginfo( 'name' ) . ( ! empty( $description ) ? ' | ' . $description : '' );
		}

		return $title;
	}

	/**
	 * enable any shortcodes in CF7
	 * @param  string $form original html
	 * @return string       parsed with do_shortcode
	 */
	public static function shortcodes_in_cf7( $form ) {
		return do_shortcode( vamtam_fix_shortcodes( $form ) );
	}

	/**
	 * Show a splash screen on some pages
	 */
	public static function vamtam_splash_screen() {
		$local = vamtam_post_meta( null, 'show-splash-screen-local', true );

		$enabled = $local === 'default' ? rd_vamtam_get_option( 'show-splash-screen' ) : vamtam_sanitize_bool( $local );

		$style = '';

		if ( ! $enabled ) {
			if ( ! is_customize_preview() ) {
				return;
			}

			$style = 'style="display: none"'; // we need the html for the customizer preview, but there is no need to show it on the first load
		}

		$logo = rd_vamtam_get_option( 'splash-screen-logo' );

		echo '<div class="vamtam-splash-screen" ' . $style . '>'; // xss ok
		echo '<div class="vamtam-splash-screen-progress-wrapper">';

		if ( ! empty( $logo ) ) {
			vamtam_url_to_image( $logo, 'full' );
		}

		echo '<div class="vamtam-splash-screen-progress"></div>
			</div>
		</div>';

		echo '<noscript><style>.vamtam-splash-screen { display: none !important }</style></noscript>';

		wp_enqueue_script( 'vamtam-splash-screen' );
	}

	/**
	 * Remove unnecessary menu item classes
	 *
	 * @param  array  $classes current menu item classes
	 * @param  object $item    menu item
	 * @param  object $args    menu item args
	 * @return array           filtered classes
	 */
	public static function nav_menu_css_class( $classes, $item ) {
		if ( isset( $item->url ) && strpos( $item->url, '#' ) !== false && ( $key = array_search( 'mega-current-menu-item', $classes ) ) !== false ) {
			unset( $classes[ $key ] );
			$classes[] = 'maybe-current-menu-item';

			$GLOBALS['vamtam_menu_had_hash'] = true;
		}

		if ( isset( $GLOBALS['vamtam_menu_had_hash'] ) && $GLOBALS['vamtam_menu_had_hash'] ) {
			$classes = array_diff( $classes, array( 'mega-current-menu-item', 'mega-current-menu-ancestor', 'mega-current-menu-parent' ) );
		}

		return $classes;
	}

	/**
	 * Wrap oEmbeds in .vamtam-video-frame
	 *
	 * @param  string $output original oembed output
	 * @param  object $data   data from the oEmbed provider
	 * @param  string $url    original embed url
	 * @return string         $output wrapped in additional html
	 */
	public static function oembed_dataparse( $output, $data, $url ) {
		if ( $data->type == 'video' )
			return '<div class="vamtam-video-frame">' . $output . '</div>';

		return $output;
	}

	/**
	 * Implements .swf oEmbeds
	 *
	 * @param  array  $matches preg_match matches
	 * @param  array  $attr    embed attributes
	 * @param  string $url     embed url
	 * @param  array  $rawattr raw attributes
	 * @return string          output html
	 */
	public static function embed_handler_swf( $matches, $attr, $url, $rawattr ) {
		$embed = sprintf(
			'
	<div class="vamtam-video-frame">
		<object width="%2$s" height="%3$s" type="application/x-shockwave-flash" data="%1$s">
			<param name="movie" value="%1$s" />
			<param name="allowFullScreen" value="true" />
			<param name="allowscriptaccess" value="always" />
			<param name="wmode" value="transparent" />
			<embed src="%1$s" type="application/x-shockwave-flash" wmode="transparent" allowscriptaccess="always" allowfullscreen="true" width="%2$s" height="%3$s" />
		</object>
	</div>',
			esc_attr( $matches[0] ),
			esc_attr( $attr['width'] ),
			esc_attr( $attr['height'] )
		);

		return apply_filters( 'vamtam_embed_swf', $embed, $matches, $attr, $url, $rawattr );
	}

	/**
	 * Sets the excerpt length
	 *
	 * @param  int $length original length
	 * @return int         excerpt length
	 */
	public static function excerpt_length( $length ) {
		global $vamtam_loop_vars;

		if ( isset( $vamtam_loop_vars ) && $vamtam_loop_vars['news'] )
			return 15;

		return $length;
	}

	/**
	 * Sets the excerpt ending
	 *
	 * @param  string $more original ending
	 * @return string         excerpt ending
	 */
	public static function excerpt_more( $more ) {
		return '...';
	}
}