Fix conflict

c3.js

@@ -48,6 +48,7 @@
         arcs: 'c3-arcs',
         area: 'c3-area',
         areas: 'c3-areas',
+        empty: 'c3-empty',
         text: 'c3-text',
         texts: 'c3-texts',
         gaugeValue: 'c3-gauge-value',
@@ -167,6 +168,9 @@
             __data_ondragstart = getConfig(['data', 'ondragstart'], function () {}),
             __data_ondragend = getConfig(['data', 'ondragend'], function () {});
 
+        // configuration for no plot-able data supplied.
+        var __data_empty_label_text = getConfig(['data', 'empty', 'label', 'text'], "");
+        
         // subchart
         var __subchart_show = getConfig(['subchart', 'show'], false),
             __subchart_size_height = getConfig(['subchart', 'size', 'height'], 60);
@@ -2842,6 +2846,12 @@
 
             /*-- Main Region --*/
 
+            // text when empty
+            main.append("text")
+                .attr("class", CLASS.text + ' ' + CLASS.empty)
+                .attr("text-anchor", "middle") // horizontal centering of text at x position in all browsers.
+                .attr("dominant-baseline", "middle"); // vertical centering of text at y position in all browsers, except IE.
+
             // Grids
             grid = main.append('g')
                 .attr("clip-path", clipPath)
@@ -3503,6 +3513,14 @@
             // xgrid focus
             updateXgridFocus();
 
+            // Data empty label positioning and text.
+            main.select("text." + CLASS.text + '.' + CLASS.empty)
+                .attr("x", width / 2)
+                .attr("y", height / 2)
+                .text(__data_empty_label_text)
+              .transition()
+                .style('opacity', targetsToShow.length ? 0 : 1);
+
             // grid
             main.select('line.' + CLASS.xgridFocus).style("visibility", "hidden");
             if (__grid_x_show) {