Renamed Plugin and changed slug to stklcode-liveticker

Due to naming conflicts with the original wp-liveticker plugin this one
is now renamed to a unique identifier.

includes/class-scliveticker-system.php

@@ -0,0 +1,75 @@
+<?php
+/**
+ * Liveticker: Plugin system class.
+ *
+ * This file contains the derived class for the plugin's system operations.
+ *
+ * @package Liveticker
+ */
+
+// Exit if accessed directly.
+if ( ! defined( 'ABSPATH' ) ) {
+	exit;
+}
+
+/**
+ *  Liveticker system configuration.
+ */
+class SCLiveticker_System extends SCLiveticker {
+
+	/**
+	 * Activation hook.
+	 *
+	 * Initializes default options.
+	 *
+	 * @return void
+	 */
+	public static function activate() {
+		// Load current options.
+		self::update_options();
+
+		// Add default settings to database.
+		$defaults = self::default_options();
+
+		if ( self::$_options['reset_settings'] ) {
+			// Reset requested, overwrite existing options with default.
+			update_option( self::OPTION, $defaults );
+		} else {
+			// Otherwise add new options.
+			add_option( self::OPTION, $defaults );
+		}
+	}
+
+	/**
+	 * Plugin uninstall handler.
+	 *
+	 * @return void
+	 */
+	public static function uninstall() {
+		// Delete all ticks.
+		$ticks = new WP_Query( array( 'post_type' => 'scliveticker_tick' ) );
+		foreach ( $ticks->get_posts() as $tick ) {
+			wp_delete_post( $tick->ID, true );
+		}
+
+		// Temporarily register taxonomy to delete it.
+		register_taxonomy( 'scliveticker_ticker', array( 'scliveticker_tick' ) );
+
+		// Delete tickers.
+		$tickers = get_terms(
+			array(
+				'taxonomy'   => 'scliveticker_ticker',
+				'hide_empty' => false,
+			)
+		);
+		foreach ( $tickers as $ticker ) {
+			wp_delete_term( $ticker->term_id, 'scliveticker_ticker' );
+		}
+
+		// Unregister taxonomy again.
+		unregister_taxonomy( 'scliveticker_ticker' );
+
+		// Delete the option.
+		delete_option( self::OPTION );
+	}
+}