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45 lines
1.4 KiB
Kotlin
45 lines
1.4 KiB
Kotlin
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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package org.mozilla.fenix.tabstray
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import kotlinx.coroutines.CoroutineScope
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import kotlinx.coroutines.ExperimentalCoroutinesApi
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import kotlinx.coroutines.cancel
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import kotlinx.coroutines.flow.collect
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import kotlinx.coroutines.flow.map
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import mozilla.components.browser.state.selector.normalTabs
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import mozilla.components.browser.state.state.BrowserState
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import mozilla.components.browser.state.store.BrowserStore
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import mozilla.components.lib.state.ext.flowScoped
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import mozilla.components.support.base.feature.LifecycleAwareFeature
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import mozilla.components.support.ktx.kotlinx.coroutines.flow.ifChanged
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import mozilla.components.ui.tabcounter.TabCounter
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/**
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* Updates the tab counter to the size of [BrowserState.normalTabs].
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*/
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class TabCounterBinding(
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private val store: BrowserStore,
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private val counter: TabCounter
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) : LifecycleAwareFeature {
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private var scope: CoroutineScope? = null
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@OptIn(ExperimentalCoroutinesApi::class)
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override fun start() {
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scope = store.flowScoped { flow ->
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flow.map { it.normalTabs }
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.ifChanged()
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.collect {
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counter.setCount(it.size)
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}
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}
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}
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override fun stop() {
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scope?.cancel()
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}
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}
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