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Expose "on" -function #114

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swelet opened this issue Jun 1, 2020 · 2 comments
Open

Expose "on" -function #114

swelet opened this issue Jun 1, 2020 · 2 comments

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@swelet
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swelet commented Jun 1, 2020 •
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Thanks for all the work that you guys do.

I think the Browser.Events.on -function should be exposed.

With the Html.Events.on function we can listen for custom js-events on elements in the Dom. I miss a way of doing the same for Document through subscriptions. Say I want to use a custom drag and drop library in js, I could listen for this event:

someElement.dispatchEvent(new CustomEvent('customDragStart'));

but not make a subscription of this

document.dispatchEvent(new CustomEvent('customDrop'));

I think exposing Browser.Events.on would be both useful and consistent with the api in Html.Events.
@rupertlssmith
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Would also need to expose Node.

Or expose 'on' functions specalized to window or document:

onWindow : String -> Decode.Decoder msg -> Sub msg
onDocument : String -> Decode.Decoder msg -> Sub msg

@Janiczek
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This would be useful for "online" and "offline" events that only happen on <body>.

https://developer.mozilla.org/en-US/docs/Web/API/Document/ononline
https://developer.mozilla.org/en-US/docs/Web/API/Document/onoffline

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@Janiczek @swelet @rupertlssmith