From 9d64f9f4158159c2b2fb1ccfbbcebdf379be1582 Mon Sep 17 00:00:00 2001
From: Stefan Kalscheuer <stefan@stklcode.de>
Date: Thu, 1 Nov 2018 15:39:58 +0100
Subject: [PATCH] Add uninstall hook to remove ticks and tickers

---
 includes/class-wpliveticker2-system.php | 33 +++++++++++++++++++++++++
 wp-liveticker2.php                      |  1 +
 2 files changed, 34 insertions(+)

diff --git a/includes/class-wpliveticker2-system.php b/includes/class-wpliveticker2-system.php
index 1247345..330489c 100644
--- a/includes/class-wpliveticker2-system.php
+++ b/includes/class-wpliveticker2-system.php
@@ -39,4 +39,37 @@ class WPLiveticker2_System extends WPLiveticker2 {
 			add_option( self::OPTION, $defaults );
 		}
 	}
+
+	/**
+	 * Plugin uninstall handler.
+	 *
+	 * @return void
+	 */
+	public static function uninstall() {
+		// Delete all ticks.
+		$ticks = new WP_Query( array( 'post_type' => 'wplt2_tick' ) );
+		foreach ( $ticks->get_posts() as $tick ) {
+			wp_delete_post( $tick->ID, true );
+		}
+
+		// Temporarily register taxonomy to delete it.
+		register_taxonomy( 'wplt2_ticker', array( 'wplt2_tick' ) );
+
+		// Delete tickers.
+		$tickers = get_terms(
+			array(
+				'taxonomy'   => 'wplt2_ticker',
+				'hide_empty' => false,
+			)
+		);
+		foreach ( $tickers as $ticker ) {
+			wp_delete_term( $ticker->term_id, 'wplt2_ticker' );
+		}
+
+		// Unregister taxonomy again.
+		unregister_taxonomy( 'wplt2_ticker' );
+
+		// Delete the option.
+		delete_option( self::OPTION );
+	}
 }
diff --git a/wp-liveticker2.php b/wp-liveticker2.php
index ae03933..070bfcc 100644
--- a/wp-liveticker2.php
+++ b/wp-liveticker2.php
@@ -44,6 +44,7 @@ define( 'WPLT2_BASENAME', plugin_basename( __FILE__ ) );
 add_action( 'init', array( 'WPLiveticker2', 'register_types' ) );
 add_action( 'plugins_loaded', array( 'WPLiveticker2', 'init' ) );
 register_activation_hook( WPLT2_FILE, array( 'WPLiveticker2_System', 'activate' ) );
+register_uninstall_hook( WPLT2_FILE, array( 'WPLiveticker2_System', 'uninstall' ) );
 
 // Allow shortcodes in widgets.
 add_filter( 'widget_text', 'do_shortcode' );