Fix arc focus from legend event - #652

c3.js

@@ -3797,9 +3797,7 @@
             })
             .on('mouseout', function (id) {
                 $$.d3.select(this).classed(CLASS.legendItemFocused, false);
-                if (!$$.transiting) {
                 $$.api.revert();
-                }
                 if (config.legend_item_onmouseout) {
                     config.legend_item_onmouseout.call($$, id);
                 }
@@ -4430,8 +4428,10 @@
             interval = window.setInterval(function () {
                 if (!$$.transiting) {
                     window.clearInterval(interval);
+                    if ($$.legend.selectAll('.c3-legend-item-focused').size() > 0) {
                         $$.expandArc(targetIds);
                     }
+                }
             }, 10);
             return;
         }

src/arc.js

@@ -127,8 +127,10 @@ c3_chart_internal_fn.expandArc = function (targetIds) {
         interval = window.setInterval(function () {
             if (!$$.transiting) {
                 window.clearInterval(interval);
+                if ($$.legend.selectAll('.c3-legend-item-focused').size() > 0) {
                     $$.expandArc(targetIds);
                 }
+            }
         }, 10);
         return;
     }

src/legend.js

@@ -225,9 +225,7 @@ c3_chart_internal_fn.updateLegend = function (targetIds, options, transitions) {
         })
         .on('mouseout', function (id) {
             $$.d3.select(this).classed(CLASS.legendItemFocused, false);
-            if (!$$.transiting) {
             $$.api.revert();
-            }
             if (config.legend_item_onmouseout) {
                 config.legend_item_onmouseout.call($$, id);
             }