Slider component not always provide the originalEvent

[keul]

I'm submitting a ... (check one with "x")

[x] bug report
[x] feature request (mainly is a bug report, but bug has been found trying to get a feature)

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https://plnkr.co/edit/2E9ZKVxjEAtTsjkDP11O?p=preview

Current behavior
If I provide a step parameter (even if "1") I get no ev.originalEvent.

Expected behavior
I think that originalEvent should be always there

Minimal reproduction of the problem with instructions

I think that issue is in the setValueFromHandle function. event if not passed over when have step:

See:

primereact/src/components/slider/Slider.js

Line 85 in 3244b1e

this.handleStepChange(newValue, this.values[this.handleIndex]);

When I don't have step:

primereact/src/components/slider/Slider.js

Line 89 in 3244b1e

this.updateValue(newValue, event);

Note: My original scope was to use ev.originalEvent.preventDefault() to prevent slide action to work in some situations (the originalEvent is cancelable), but the onChange event is called after the change take place.

I'm wondering if this can be fixed/changed too:

• calculate the next value
• call onChange
• check for originalEvent.defaultPrevented
• if is false: calling setState to change stored values

Please tell us about your environment:

• React version:
  16.3.1

• PrimeReact version:
  1.5.1

• Browser: [all | Chrome XX | Firefox XX | IE XX | Safari XX | Mobile Chrome XX | Android X.X Chrome

• Language: [all | TypeScript X.X | ES6/7 | ES5]
  ES 6

[mertsincan]

Note: My original scope was to use ev.originalEvent.preventDefault() to prevent slide action to work in some situations (the originalEvent is cancelable), but the onChange event is called after the change take place.

• Fixed for next version. Thanks a lot!