refactor: remove zoom.disableDefaultBehavior

htdocs/samples/zoom_type.html

@@ -22,8 +22,7 @@
           },
           zoom: {
               enabled: true,
-              type: 'scroll',
+              type: 'scroll'
-              disableDefaultBehavior: false
           }
       });
 
@@ -36,8 +35,7 @@
           },
           zoom: {
               enabled: true,
-              type: 'drag',
+              type: 'drag'
-              disableDefaultBehavior: false
           }
       });
 

src/config.js

@@ -15,7 +15,6 @@ ChartInternal.prototype.getDefaultConfig = function () {
         zoom_enabled: false,
         zoom_initialRange: undefined,
         zoom_type: 'scroll',
-        zoom_disableDefaultBehavior: false,
         zoom_privileged: false,
         zoom_rescale: false,
         zoom_onzoom: function () {},

src/zoom.js

@@ -62,10 +62,6 @@ ChartInternal.prototype.zoomTransform = function (range) {
 };
 
 ChartInternal.prototype.initDragZoom = function () {
-    if (!(this.config.zoom_type === 'drag' && this.config.zoom_enabled)) {
-        return;
-    }
-
     const $$ = this;
     const d3 = $$.d3;
     const config = $$.config;
@@ -73,6 +69,10 @@ ChartInternal.prototype.initDragZoom = function () {
     const brushXPos = $$.margin.left + 20.5;
     const brushYPos = $$.margin.top + 0.5;
 
+    if (!(config.zoom_type === 'drag' && config.zoom_enabled)) {
+        return;
+    }
+
     const brush = $$.dragZoomBrush = d3.brushX()
         .on("start", () => {
             $$.api.unzoom();
@@ -88,16 +88,12 @@ ChartInternal.prototype.initDragZoom = function () {
         })
         .on("end", () => {
             if (d3.event.selection == null) {
-                return
+                return;
             }
 
             const [x0, x1] = d3.event.selection;
 
-            if (!config.zoom_disableDefaultBehavior) {
             $$.api.zoom([$$.x.invert(x0), $$.x.invert(x1)]);
-            } else {
-                $$.api.zoom([$$.x.invert(x0), $$.x.invert(x1)]);
-            }
 
             $$.svg
                 .select("." + CLASS.dragZoom)