Improve minification

chartjs · Jun 12, 2016 · 8efb9f8 · 8efb9f8
1 parent 2f3f2fd
commit 8efb9f8
Showing 1 changed file with 22 additions and 22 deletions.
diff --git a/src/chart.zoom.js b/src/chart.zoom.js
@@ -8,14 +8,14 @@ Chart = typeof(Chart) === 'function' ? Chart : window.Chart;
 var helpers = Chart.helpers;
 
 // Take the zoom namespace of Chart
-Chart.Zoom = Chart.Zoom || {};
+var zoomNS = Chart.Zoom = Chart.Zoom || {};
 
 // Where we store functions to handle different scale types
-var zoomFunctions = Chart.Zoom.zoomFunctions = Chart.Zoom.zoomFunctions || {};
-var panFunctions = Chart.Zoom.panFunctions = Chart.Zoom.panFunctions || {}; 
+var zoomFunctions = zoomNS.zoomFunctions = zoomNSzoomFunctions || {};
+var panFunctions = zoomNS.panFunctions = zoomNS.panFunctions || {}; 
 
 // Default options if none are provided
-var defaultOptions = Chart.Zoom.defaults = {
+var defaultOptions = zoomNS.defaults = {
 	pan: {
 		enabled: true,
 		mode: 'xy',
@@ -121,16 +121,16 @@ function panTimeScale(scale, delta) {
 }
 
 function panNumericalScale(scale, delta) {
-	var options = scale.options;
+	var tickOpts = scale.options.ticks;
 	var start = scale.start,
 		end = scale.end;
 
-	if (options.ticks.reverse) {
-		options.ticks.max = scale.getValueForPixel(scale.getPixelForValue(start) - delta);
-		options.ticks.min = scale.getValueForPixel(scale.getPixelForValue(end) - delta);
+	if (tickOpts.reverse) {
+		tickOpts.max = scale.getValueForPixel(scale.getPixelForValue(start) - delta);
+		tickOpts.min = scale.getValueForPixel(scale.getPixelForValue(end) - delta);
 	} else {
-		options.ticks.min = scale.getValueForPixel(scale.getPixelForValue(start) - delta);
-		options.ticks.max = scale.getValueForPixel(scale.getPixelForValue(end) - delta);
+		tickOpts.min = scale.getValueForPixel(scale.getPixelForValue(start) - delta);
+		tickOpts.max = scale.getValueForPixel(scale.getPixelForValue(end) - delta);
 	}
 }
 
@@ -164,21 +164,21 @@ function positionInChartArea(chartInstance, position) {
 }
 
 // Store these for later
-Chart.Zoom.zoomFunctions['category'] = zoomIndexScale;
-Chart.Zoom.zoomFunctions['time'] = zoomTimeScale;
-Chart.Zoom.zoomFunctions['linear'] = zoomNumericalScale;
-Chart.Zoom.zoomFunctions['logarithmic'] = zoomNumericalScale;
-Chart.Zoom.panFunctions['category'] = panIndexScale;
-Chart.Zoom.panFunctions['time'] = panTimeScale;
-Chart.Zoom.panFunctions['linear'] = panNumericalScale;
-Chart.Zoom.panFunctions['logarithmic'] = panNumericalScale;
+zoomNS.zoomFunctions['category'] = zoomIndexScale;
+zoomNS.zoomFunctions['time'] = zoomTimeScale;
+zoomNS.zoomFunctions['linear'] = zoomNumericalScale;
+zoomNS.zoomFunctions['logarithmic'] = zoomNumericalScale;
+zoomNS.panFunctions['category'] = panIndexScale;
+zoomNS.panFunctions['time'] = panTimeScale;
+zoomNS.panFunctions['linear'] = panNumericalScale;
+zoomNS.panFunctions['logarithmic'] = panNumericalScale;
 
 // Chartjs Zoom Plugin
-var ZoomPlugin = Chart.PluginBase.extend({
+var zoomPlugin = {
 	beforeInit: function(chartInstance) {
 		var node = chartInstance.chart.ctx.canvas;
 		var options = chartInstance.options;
-		var panThreshold = helpers.getValueOrDefault(options.pan ? options.pan.threshold : undefined, Chart.Zoom.defaults.pan.threshold);
+		var panThreshold = helpers.getValueOrDefault(options.pan ? options.pan.threshold : undefined, zoomNS.defaults.pan.threshold);
 
 		var wheelHandler = function(e) {
 			if (e.deltaY > 0) {
@@ -269,6 +269,6 @@ var ZoomPlugin = Chart.PluginBase.extend({
 			mc.remove('panend');
 		}
 	}
-});
+};
 
-Chart.pluginService.register(new ZoomPlugin());
+Chart.pluginService.register(zoomPlugin);