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53 lines
2.0 KiB
Kotlin
53 lines
2.0 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.ExperimentalCoroutinesApi
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import kotlinx.coroutines.flow.Flow
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import kotlinx.coroutines.flow.collect
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import kotlinx.coroutines.flow.drop
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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.selector.privateTabs
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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.helpers.AbstractBinding
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import mozilla.components.support.ktx.kotlinx.coroutines.flow.ifChanged
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/**
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* A binding that closes the tabs tray when the last tab is closed.
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*/
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@OptIn(ExperimentalCoroutinesApi::class)
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class CloseOnLastTabBinding(
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browserStore: BrowserStore,
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private val tabsTrayStore: TabsTrayStore,
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private val navigationInteractor: NavigationInteractor,
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) : AbstractBinding<BrowserState>(browserStore) {
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override suspend fun onState(flow: Flow<BrowserState>) {
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flow.map { it }
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// Ignore the initial state; we don't want to close immediately.
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.drop(1)
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.ifChanged { it.tabs }
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.collect { state ->
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val selectedPage = tabsTrayStore.state.selectedPage
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val tabs = when (selectedPage) {
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Page.NormalTabs -> {
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state.normalTabs
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}
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Page.PrivateTabs -> {
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state.privateTabs
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}
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else -> {
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// Do nothing if we're on any other non-browser page.
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null
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}
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}
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if (tabs?.isEmpty() == true) {
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navigationInteractor.onCloseAllTabsClicked(selectedPage == Page.PrivateTabs)
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}
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}
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}
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}
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