/**
	 * Checks the other WP RSS Aggregator add-ons and deactivates those that have become useless.
	 *
	 * @since 1.0
	 */
	public function check_other_addons() {
		// Allow plugins to be activated if using imported feed items
		if ( wprss_ftp_using_feed_items() ) return;

		// Disabled add-ons tracker
		$addons = array();

		// List of add-ons to be disabled
		$addons_to_disable = apply_filters( 'wprss_ftp_addons_to_disable', self::$ADDONS_TO_DISABLE );

		// Disable add-ons
		foreach ( $addons_to_disable as $file => $name) {
			// Categories
			//$active_plugins = get_option('active_plugins');
        	//$key = array_search( $file, $active_plugins );
			//if ( $key !== FALSE ) {
			if ( is_plugin_active( $file ) ) {
				deactivate_plugins( $file );
				array_push( $addons, $name );
			}
		}

		// If any add-ons have been disabled
		if ( count( $addons ) > 0 ) {
			self::$disabled_addons = $addons;
			add_action( 'all_admin_notices', array( self::get_instance(), 'notify_about_disabled_addons' ) );
		}
	}
	/**
	 * @param SimplePie_Item $item The feed item to prepare
	 * @since 3.5
	 */
	protected static function _prepareItem( $item ) {
		$event = WPRSS_FTP::do_action( 'converter_prepare_item_before', array( 'item' => $item ) );
		self::_keepItemContentHtmlAttributes( $item );
		$event = WPRSS_FTP::do_action( 'converter_prepare_item_after', $event->args );
	}
	/**
	 * Renders the activate/deactivate license button.
	 * 
	 * @since 1.0
	 */
	public function license_activation_callback() {
		$status = WPRSS_FTP::get_instance()->get_license_status();
		if ( $status === 'site_inactive' ) $status = 'inactive';
		
		$valid = $status == 'valid';
		$btn_text = $valid ? 'Deactivate License' : 'Activate License';
		$btn_name = 'wprss_ftp_license_' . ( $valid? 'deactivate' : 'activate' );
		wp_nonce_field( 'wprss_ftp_license_nonce', 'wprss_ftp_license_nonce' ); ?>

		<input type="submit" class="button-secondary" name="<?php echo $btn_name; ?>" value="<?php _e( $btn_text, WPRSS_TEXT_DOMAIN ); ?>" />
		<span id="wprss-ftp-license-status-text">
			<strong>Status:
			<span class="wprss-ftp-license-<?php echo $status; ?>">
					<?php _e( ucfirst($status), 'wprss' ); ?>
					<?php if ( $status === 'valid' ) : ?>
						<i class="fa fa-check"></i>
					<?php elseif( $status === 'invalid' ): ?>
						<i class="fa fa-times"></i>
					<?php elseif( $status === 'inactive' ): ?>
						<i class="fa fa-warning"></i>
					<?php endif; ?>
				</strong>
			</span>
		</span>

		<style type="text/css">
			.wprss-ftp-license-valid {
				color: green;
			}
			.wprss-ftp-license-invalid {
				color: #b71919;
			}
			.wprss-ftp-license-inactive {
				color: #d19e5b;
			}
			#wprss-ftp-license-status-text {
				margin-left: 8px;
				line-height: 27px;
				vertical-align: middle;
			}
		</style>
	
		<?php
	}