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iceraven-browser/app/src/main/java/org/mozilla/fenix/home/sessioncontrol/RecentTabsListFeature.kt

48 lines
1.9 KiB
Kotlin

/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
package org.mozilla.fenix.home.sessioncontrol
import kotlinx.coroutines.ExperimentalCoroutinesApi
import kotlinx.coroutines.flow.Flow
import kotlinx.coroutines.flow.collect
import kotlinx.coroutines.flow.map
import mozilla.components.browser.state.selector.normalTabs
import mozilla.components.browser.state.state.BrowserState
import mozilla.components.browser.state.store.BrowserStore
import mozilla.components.lib.state.helpers.AbstractBinding
import mozilla.components.support.ktx.kotlinx.coroutines.flow.ifChanged
import org.mozilla.fenix.home.HomeFragmentAction
import org.mozilla.fenix.home.HomeFragmentStore
/**
* View-bound feature that dispatches recent tab changes to the [HomeFragmentStore] when the
* [BrowserStore] is updated.
*/
@OptIn(ExperimentalCoroutinesApi::class)
class RecentTabsListFeature(
private val browserStore: BrowserStore,
private val homeStore: HomeFragmentStore
) : AbstractBinding<BrowserState>(browserStore) {
override suspend fun onState(flow: Flow<BrowserState>) {
flow.map { it.selectedTabId }
.ifChanged()
.collect { selectedTabId ->
// Attempt to get the selected normal tab since here may not be a selected tab or
// the selected tab may be a private tab.
val selectedTab = browserStore.state.normalTabs.firstOrNull {
it.id == selectedTabId
}
val recentTabsList = if (selectedTab != null) {
listOf(selectedTab)
} else {
emptyList()
}
homeStore.dispatch(HomeFragmentAction.RecentTabsChange(recentTabsList))
}
}
}