77 lines
2.9 KiB
Kotlin
77 lines
2.9 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.tabtray
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import mozilla.components.browser.state.state.BrowserState
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import mozilla.components.concept.tabstray.Tab
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import mozilla.components.lib.state.Action
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import mozilla.components.lib.state.State
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import mozilla.components.lib.state.Store
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/**
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* The [Store] for holding the [TabTrayDialogFragmentState] and
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* applying [TabTrayDialogFragmentAction]s.
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*/
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class TabTrayDialogFragmentStore(initialState: TabTrayDialogFragmentState) :
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Store<TabTrayDialogFragmentState, TabTrayDialogFragmentAction>(
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initialState,
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::tabTrayStateReducer
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)
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/**
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* Actions to dispatch through the `TabTrayDialogFragmentStore` to modify
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* `TabTrayDialogFragmentState` through the reducer.
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*/
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sealed class TabTrayDialogFragmentAction : Action {
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data class BrowserStateChanged(val browserState: BrowserState) : TabTrayDialogFragmentAction()
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object EnterMultiSelectMode : TabTrayDialogFragmentAction()
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object ExitMultiSelectMode : TabTrayDialogFragmentAction()
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data class AddItemForCollection(val item: Tab) : TabTrayDialogFragmentAction()
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data class RemoveItemForCollection(val item: Tab) : TabTrayDialogFragmentAction()
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}
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/**
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* The state for the Tab Tray Dialog Screen
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* @property mode Current Mode of Multiselection
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*/
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data class TabTrayDialogFragmentState(val browserState: BrowserState, val mode: Mode) : State {
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sealed class Mode {
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open val selectedItems = emptySet<Tab>()
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object Normal : Mode()
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data class MultiSelect(override val selectedItems: Set<Tab>) : Mode()
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}
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}
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/**
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* The TabTrayDialogFragmentState Reducer.
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*/
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private fun tabTrayStateReducer(
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state: TabTrayDialogFragmentState,
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action: TabTrayDialogFragmentAction
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): TabTrayDialogFragmentState {
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return when (action) {
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is TabTrayDialogFragmentAction.BrowserStateChanged -> state.copy(browserState = action.browserState)
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is TabTrayDialogFragmentAction.AddItemForCollection ->
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state.copy(mode = TabTrayDialogFragmentState.Mode.MultiSelect(state.mode.selectedItems + action.item))
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is TabTrayDialogFragmentAction.RemoveItemForCollection -> {
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val selected = state.mode.selectedItems - action.item
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state.copy(
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mode = if (selected.isEmpty()) {
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TabTrayDialogFragmentState.Mode.Normal
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} else {
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TabTrayDialogFragmentState.Mode.MultiSelect(selected)
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}
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)
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}
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is TabTrayDialogFragmentAction.ExitMultiSelectMode -> state.copy(mode = TabTrayDialogFragmentState.Mode.Normal)
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is TabTrayDialogFragmentAction.EnterMultiSelectMode -> state.copy(
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mode = TabTrayDialogFragmentState.Mode.MultiSelect(
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setOf()
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)
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)
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}
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}
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