2018-08-16 22:30:59 +00:00
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/*
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2021-02-04 22:04:35 +00:00
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* Copyright (c) 2010-2021 Tim Düsterhus.
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2018-08-16 22:30:59 +00:00
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*
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* Use of this software is governed by the Business Source License
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* included in the LICENSE file.
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*
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2022-09-17 14:23:02 +00:00
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* Change Date: 2026-09-17
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2018-08-16 22:30:59 +00:00
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*
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* On the date above, in accordance with the Business Source
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* License, use of this software will be governed by version 2
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* or later of the General Public License.
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*/
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define(['./ToggleButton'], function (ToggleButton) {
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'use strict'
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const DEPENDENCIES = ['UiMessageStream'].concat(
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ToggleButton.DEPENDENCIES || []
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)
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class AutoscrollButton extends ToggleButton {
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constructor(element, messageStream, ...superDeps) {
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super(element, true, undefined, ...superDeps)
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this.messageStream = messageStream
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this.messageStream.on('reachedBottom', this.enable.bind(this))
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this.messageStream.on('scrollUp', this.disable.bind(this))
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}
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enable() {
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super.enable()
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this.messageStream.enableAutoscroll = true
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}
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disable() {
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super.disable()
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this.messageStream.enableAutoscroll = false
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}
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}
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AutoscrollButton.DEPENDENCIES = DEPENDENCIES
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return AutoscrollButton
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})
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