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Current File : /srv/wp/nallaram.agtdemo.in/www/wp-content/plugins/envira-gallery-lite/includes/admin/editor.php
<?php
/**
 * Editor class.
 *
 * @since 1.0.0
 *
 * @package Envira_Gallery
 * @author  Envira Gallery Team
 */

// Exit if accessed directly.
if ( ! defined( 'ABSPATH' ) ) {
	exit;
}

/**
 * Editor Helper Class
 *
 * @since 1.0.0
 */
class Envira_Gallery_Editor {

	/**
	 * Holds the class object.
	 *
	 * @since 1.0.0
	 *
	 * @var object
	 */
	public static $instance;

	/**
	 * Path to the file.
	 *
	 * @since 1.0.0
	 *
	 * @var string
	 */
	public $file = __FILE__;

	/**
	 * Holds the base class object.
	 *
	 * @since 1.0.0
	 *
	 * @var object
	 */
	public $base;

	/**
	 * Flag to determine if media modal is loaded.
	 *
	 * @since 1.0.0
	 *
	 * @var object
	 */
	public $loaded = false;

	/**
	 * Primary class constructor.
	 *
	 * @since 1.0.0
	 */
	public function __construct() {

		// Load the base class object.
		$this->base = Envira_Gallery_Lite::get_instance();

		// Add a custom media button to the editor.
		add_action( 'media_buttons', [ $this, 'media_button' ] );
		add_action( 'save_post', [ $this, 'save_gallery_ids' ], 9999 );
		add_action( 'before_delete_post', [ $this, 'remove_gallery_ids' ] );
	}

	/**
	 * Adds a custom gallery insert button beside the media uploader button.
	 *
	 * @since 1.0.0
	 *
	 * @param string $buttons  The media buttons context HTML.
	 * @return void
	 */
	public function media_button( $buttons ) {

		// Enqueue styles.
		wp_register_style( $this->base->plugin_slug . '-admin-style', plugins_url( 'assets/css/admin.css', $this->base->file ), [], $this->base->version );
		wp_enqueue_style( $this->base->plugin_slug . '-admin-style' );

		wp_register_style( $this->base->plugin_slug . '-editor-style', plugins_url( 'assets/css/editor.css', $this->base->file ), [], $this->base->version );
		wp_enqueue_style( $this->base->plugin_slug . '-editor-style' );

		// Enqueue the gallery / album selection script.
		wp_enqueue_script( $this->base->plugin_slug . '-gallery-select-script', plugins_url( 'assets/js/min/gallery-select-min.js', $this->base->file ), [ 'jquery' ], $this->base->version, true );
		wp_localize_script(
			$this->base->plugin_slug . '-gallery-select-script',
			'envira_gallery_select',
			[
				'get_galleries_nonce' => wp_create_nonce( 'envira-gallery-editor-get-galleries' ),
				'modal_title'         => __( 'Insert', 'envira-gallery-lite' ),
				'insert_button_label' => __( 'Insert', 'envira-gallery-lite' ),
			]
		);

		// Enqueue the script that will trigger the editor button.
		wp_enqueue_script( $this->base->plugin_slug . '-editor-script', plugins_url( 'assets/js/min/editor-min.js', $this->base->file ), [ 'jquery' ], $this->base->version, true );
		wp_localize_script(
			$this->base->plugin_slug . '-gallery-select-script',
			'envira_gallery_editor',
			[
				'modal_title'         => __( 'Insert', 'envira-gallery-lite' ),
				'insert_button_label' => __( 'Insert', 'envira-gallery-lite' ),
			]
		);

		// Create the media button.
		$button = '<a id="envira-media-modal-button" href="#" class="button envira-gallery-choose-gallery" data-action="gallery" title="' . esc_attr__( 'Add Gallery', 'envira-gallery-lite' ) . '" >
            <span class="envira-media-icon"></span> ' .
			esc_html__( 'Add Gallery', 'envira-gallery-lite' ) .
		'</a>';

		// Filter the button.
		$button = apply_filters( 'envira_gallery_media_button', $button, $buttons );

		// Append the button.
		echo $button; // @codingStandardsIgnoreLine
	}

	/**
	 * Checks for the existience of any Envira Gallery shortcodes in the Post's content,
	 * storing this Post's ID in each Envira Gallery.
	 *
	 * This allows Envira's WP_List_Table to tell the user which Post(s) the Gallery is
	 * included in.
	 *
	 * @since 1.3.3.6
	 *
	 * @param int $post_id Post ID.
	 */
	public function save_gallery_ids( $post_id ) {

		$this->update_gallery_post_ids( $post_id, false );
	}

	/**
	 * Removes the given Post ID from all Envira Galleries that contain the Post ID
	 *
	 * @since 1.3.3.6
	 *
	 * @param int $post_id Post ID.
	 */
	public function remove_gallery_ids( $post_id ) {

		$this->update_gallery_post_ids( $post_id, true );
	}

	/**
	 * Checks for Envira Gallery shortcodes in the given content.
	 *
	 * If found, adds or removes those shortcode IDs to the given Post ID
	 *
	 * @since 1.3.3.6
	 *
	 * @param int  $post_id Post ID.
	 * @param bool $remove Remove Post ID from Gallery Meta (false).
	 * @return bool
	 */
	private function update_gallery_post_ids( $post_id, $remove = false ) {

		// Get post.
		$post = get_post( $post_id );
		if ( ! $post ) {
			return;
		}

		// Don't do anything if we are saving a Gallery or Album.
		if ( in_array( $post->post_type, [ 'envira', 'envira_album' ], true ) ) {
			return;
		}

		// Don't do anything if this is a Post Revision.
		if ( wp_is_post_revision( $post ) ) {
			return false;
		}

		// Check content for shortcodes.
		if ( ! has_shortcode( $post->post_content, 'envira-gallery' ) ) {
			return false;
		}

		// Content has Envira shortcode(s).
		// Extract them to get Gallery IDs.
		$pattern = '\[(\[?)(envira\-gallery)(?![\w-])([^\]\/]*(?:\/(?!\])[^\]\/]*)*?)(?:(\/)\]|\](?:([^\[]*+(?:\[(?!\/\2\])[^\[]*+)*+)\[\/\2\])?)(\]?)';
		if ( ! preg_match_all( '/' . $pattern . '/s', $post->post_content, $matches ) ) {
			return false;
		}
		if ( ! is_array( $matches[3] ) ) {
			return false;
		}

		// Iterate through shortcode matches, extracting the gallery ID and storing it in the meta.
		$gallery_ids = [];
		foreach ( $matches[3] as $shortcode ) {
			// Grab ID.
			$gallery_ids[] = preg_replace( '/[^0-9]/', '', $shortcode );
		}

		// Check we found gallery IDs.
		if ( ! $gallery_ids ) {
			return false;
		}

		// Iterate through each gallery.
		foreach ( $gallery_ids as $gallery_id ) {
			// Get Post IDs this Gallery is included in.
			$post_ids = get_post_meta( $gallery_id, '_eg_in_posts', true );
			if ( ! is_array( $post_ids ) ) {
				$post_ids = [];
			}

			if ( $remove ) {
				// Remove the Post ID.
				if ( isset( $post_ids[ $post_id ] ) ) {
					unset( $post_ids[ $post_id ] );
				}
			} else {
				// Add the Post ID.
				$post_ids[ $post_id ] = $post_id;
			}

			// Save.
			update_post_meta( $gallery_id, '_eg_in_posts', $post_ids );
		}
	}

	/**
	 * Returns the singleton instance of the class.
	 *
	 * @since 1.0.0
	 *
	 * @return object The Envira_Gallery_Editor object.
	 */
	public static function get_instance() {

		if ( ! isset( self::$instance ) && ! ( self::$instance instanceof Envira_Gallery_Editor ) ) {
			self::$instance = new Envira_Gallery_Editor();
		}

		return self::$instance;
	}
}

// Load the editor class.
$envira_gallery_editor = Envira_Gallery_Editor::get_instance();

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