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website: lab: backoff calling history.replaceState to prevent chrome from ignoring the calls

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Rasmus Andersson 2018-09-15 15:05:03 -07:00
parent 6f5e2d7939
commit 5d00f85089
1 changed files with 24 additions and 0 deletions
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24
docs/lab/index.html
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@ -1128,6 +1128,8 @@ class Vars {
.map(s => s.split('=').map(decodeURIComponent))
)
this.vars = new Map()
this._historyReplaceStateTimer = null
this._needsHistoryReplaceState = false
}
getValue(name) {
@ -1153,7 +1155,29 @@ class Vars {
} else {
this.values.set(name, value)
}
this._setNeedsHistoryReplaceState()
}
_performHistoryReplaceState() {
history.replaceState({} , '', '?' + this.getQueryString())
this._needsHistoryReplaceState = false
}
_setNeedsHistoryReplaceState() {
// We employ some backoff on calling history.replaceState as
// Chrome will start to throttle (meaning ignoring) calls to
// history.replaceState if the frequency gets too high.
if (this._historyReplaceStateTimer === null) {
this._performHistoryReplaceState()
this._historyReplaceStateTimer = setTimeout(() => {
this._historyReplaceStateTimer = null
if (this._needsHistoryReplaceState) {
this._performHistoryReplaceState()
}
}, 200)
} else {
this._needsHistoryReplaceState = true
}
}
refreshValue(name) {