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https://github.com/wbbaddons/Tims-Chat.git
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44 lines
1.1 KiB
JavaScript
44 lines
1.1 KiB
JavaScript
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/*
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* Copyright (c) 2010-2018 Tim Düsterhus.
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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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* Change Date: 2022-08-16
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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(ToggleButton.DEPENDENCIES || [ ])
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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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