@@ -59,9 +59,20 @@ var Events = {
5959 internalEv . emit ( event , data ) ;
6060 } ;
6161
62- // Add a dummy event handler for 'wheel' event for Safari
63- // to enable mouse wheel zoom.
64- addDummyScrollEventListener ( plotObj ) ;
62+ /*
63+ * Add a dummy event handler for 'wheel' event for Safari
64+ * to enable mouse wheel zoom.
65+ * https://github.com/d3/d3/issues/3035
66+ * https://github.com/plotly/plotly.js/issues/7452
67+ *
68+ * We set {passive: true} for better performance
69+ * and to avoid a Violation warning in Chromium.
70+ * https://github.com/WICG/EventListenerOptions/blob/gh-pages/explainer.md
71+ * https://github.com/plotly/plotly.js/issues/7516
72+ */
73+ if ( typeof plotObj . addEventListener === 'function' ) {
74+ plotObj . addEventListener ( "wheel" , ( ) => { } , { passive : true } ) ;
75+ }
6576
6677 return plotObj ;
6778 } ,
@@ -134,35 +145,4 @@ var Events = {
134145
135146} ;
136147
137- function addDummyScrollEventListener ( plotObj ) {
138- /*
139- * Add a dummy event handler for 'wheel' event for Safari
140- * to enable mouse wheel zoom.
141- * https://github.com/d3/d3/issues/3035
142- * https://github.com/plotly/plotly.js/issues/7452
143- *
144- * We set {passive: true} for better performance
145- * and to avoid a Violation warning in Chromium.
146- * https://github.com/WICG/EventListenerOptions/blob/gh-pages/explainer.md
147- * https://github.com/plotly/plotly.js/issues/7516
148- */
149- 150- // Test whether the passive property is accessed (for compatibility with older browsers)
151- var supportsPassive = false ;
152- try {
153- var opts = Object . defineProperty ( { } , 'passive' , {
154- get : function ( ) {
155- supportsPassive = true ;
156- }
157- } ) ;
158- window . addEventListener ( "testPassive" , null , opts ) ;
159- window . removeEventListener ( "testPassive" , null , opts ) ;
160- } catch ( e ) { }
161- 162- if ( typeof plotObj . addEventListener === 'function' ) {
163- plotObj . addEventListener ( "wheel" , ( ) => { } , supportsPassive ? { passive : true } : false ) ;
164- }
165- 166- }
167- 168148module . exports = Events ;
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