Move legend and title in the plugins folder (#4076)

src/chart.js

@@ -15,8 +15,6 @@ require('./core/core.layoutService')(Chart);
 require('./core/core.scaleService')(Chart);
 require('./core/core.ticks.js')(Chart);
 require('./core/core.scale')(Chart);
-require('./core/core.title')(Chart);
-require('./core/core.legend')(Chart);
 require('./core/core.interaction')(Chart);
 require('./core/core.tooltip')(Chart);
 
@@ -52,7 +50,11 @@ require('./charts/Chart.Scatter')(Chart);
 // Loading built-it plugins
 var plugins = [];
 
-plugins.push(require('./plugins/plugin.filler.js')(Chart));
+plugins.push(
+    require('./plugins/plugin.filler.js')(Chart),
+    require('./plugins/plugin.legend.js')(Chart),
+    require('./plugins/plugin.title.js')(Chart)
+);
 
 Chart.plugins.register(plugins);
 

src/plugins/plugin.legend.js

@@ -507,8 +507,7 @@ module.exports = function(Chart) {
 		Chart.layoutService.addBox(chart, legend);
 	}
 
-	// Register the legend plugin
-	Chart.plugins.register({
+	return {
 		id: 'legend',
 
 		beforeInit: function(chart) {
@@ -541,5 +540,5 @@ module.exports = function(Chart) {
 				legend.handleEvent(e);
 			}
 		}
-	});
+	};
 };

src/plugins/plugin.title.js

@@ -3,6 +3,7 @@
 module.exports = function(Chart) {
 
 	var helpers = Chart.helpers;
+	var noop = helpers.noop;
 
 	Chart.defaults.global.title = {
 		display: false,
@@ -16,7 +17,6 @@ module.exports = function(Chart) {
 		text: ''
 	};
 
-	var noop = helpers.noop;
 	Chart.Title = Chart.Element.extend({
 		initialize: function(config) {
 			var me = this;
@@ -195,8 +195,7 @@ module.exports = function(Chart) {
 		Chart.layoutService.addBox(chart, title);
 	}
 
-	// Register the title plugin
-	Chart.plugins.register({
+	return {
 		id: 'title',
 
 		beforeInit: function(chart) {
@@ -223,5 +222,5 @@ module.exports = function(Chart) {
 				delete chart.titleBlock;
 			}
 		}
-	});
+	};
 };