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36 lines
549 B
36 lines
549 B
// Copyright 2020 The Gitea Authors. All rights reserved. |
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// SPDX-License-Identifier: MIT |
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package util |
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import ( |
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"sync" |
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"time" |
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) |
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func Debounce(d time.Duration) func(f func()) { |
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type debouncer struct { |
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mu sync.Mutex |
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t *time.Timer |
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} |
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db := &debouncer{} |
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return func(f func()) { |
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db.mu.Lock() |
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defer db.mu.Unlock() |
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if db.t != nil { |
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db.t.Stop() |
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} |
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var trigger *time.Timer |
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trigger = time.AfterFunc(d, func() { |
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db.mu.Lock() |
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defer db.mu.Unlock() |
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if trigger == db.t { |
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f() |
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db.t = nil |
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} |
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}) |
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db.t = trigger |
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} |
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}
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