Added ability to filter chart wrapper class.

Author: Eugene Manuilov

classes/Visualizer/Module/Frontend.php

@@ -101,7 +101,8 @@ public function renderChart( $atts ) {
 		}
 
 		$id = 'visualizer-' . $atts['id'];
-		$class = !empty( $atts['class'] ) ? ' class="' . $atts['class'] . '"' : '';
+		$class = apply_filters( Visualizer_Plugin::FILTER_CHART_WRAPPER_CLASS, $atts['class'], $atts['id'] );
+		$class = !empty( $class ) ? ' class="' . $class . '"' : '';
 
 		$type = get_post_meta( $chart->ID, Visualizer_Plugin::CF_CHART_TYPE, true );
 

classes/Visualizer/Plugin.php

@@ -51,8 +51,9 @@ class Visualizer_Plugin {
 	const ACTION_UPLOAD_DATA  = 'visualizer-upload-data';
 
 	// custom filters
-	const FILTER_GET_CHART_SERIES = 'visualizer-get-chart-series';
-	const FILTER_GET_CHART_DATA   = 'visualizer-get-chart-data';
+	const FILTER_CHART_WRAPPER_CLASS = 'visualizer-chart-wrapper-class';
+	const FILTER_GET_CHART_SERIES    = 'visualizer-get-chart-series';
+	const FILTER_GET_CHART_DATA      = 'visualizer-get-chart-data';
 
 	/**
 	 * Singletone instance of the plugin.