Files: dd24bd09326e63d0e8ff74129b65f7356a8c2538 / lib / observe-link-hover.js
609 bytesRaw
| 1 | var Sustained = require('./sustained') |
| 2 | var Value = require('mutant/value') |
| 3 | |
| 4 | module.exports = function (root, delay) { |
| 5 | var target = Value() |
| 6 | root.addEventListener('mouseover', (ev) => { |
| 7 | var anchor = null |
| 8 | for (var n = ev.target; n.parentNode; n = n.parentNode) { |
| 9 | if (n.nodeName === 'A') { |
| 10 | anchor = n |
| 11 | break |
| 12 | } |
| 13 | } |
| 14 | target.set(anchor) |
| 15 | }) |
| 16 | |
| 17 | root.addEventListener('mouseleave', (ev) => { |
| 18 | target.set(false) |
| 19 | }) |
| 20 | |
| 21 | var result = Sustained(target, delay || 500, (v) => { |
| 22 | return v === undefined |
| 23 | }) |
| 24 | |
| 25 | result.cancel = () => target.set(undefined) |
| 26 | return result |
| 27 | } |
| 28 |
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