131 lines
4.0 KiB
Kotlin
131 lines
4.0 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.library.history
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import android.view.LayoutInflater
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import android.view.ViewGroup
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import androidx.constraintlayout.widget.ConstraintLayout
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import androidx.core.view.isVisible
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import androidx.recyclerview.widget.LinearLayoutManager
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import androidx.recyclerview.widget.SimpleItemAnimator
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import kotlinx.android.synthetic.main.component_history.*
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import kotlinx.android.synthetic.main.component_history.view.*
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import mozilla.components.support.base.feature.BackHandler
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import org.mozilla.fenix.R
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import org.mozilla.fenix.library.LibraryPageView
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/**
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* Interface for the HistoryViewInteractor. This interface is implemented by objects that want
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* to respond to user interaction on the HistoryView
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*/
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interface HistoryViewInteractor {
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/**
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* Called when a user taps a history item
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*/
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fun onItemPress(item: HistoryItem)
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/**
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* Called when a user long clicks a user
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*/
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fun onItemLongPress(item: HistoryItem)
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/**
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* Called on backpressed to exit edit mode
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*/
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fun onBackPressed(): Boolean
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/**
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* Called when the mode is switched so we can invalidate the menu
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*/
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fun onModeSwitched()
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/**
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* Called when delete all is tapped
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*/
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fun onDeleteAll()
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/**
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* Called when one history item is deleted
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* @param item the history item to delete
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*/
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fun onDeleteOne(item: HistoryItem)
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/**
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* Called when multiple history items are deleted
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* @param items the history items to delete
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*/
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fun onDeleteSome(items: Set<HistoryItem>)
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}
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/**
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* View that contains and configures the History List
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*/
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class HistoryView(
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container: ViewGroup,
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val interactor: HistoryInteractor
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) : LibraryPageView(container), BackHandler {
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val view: ConstraintLayout = LayoutInflater.from(container.context)
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.inflate(R.layout.component_history, container, true)
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.findViewById(R.id.history_wrapper)
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private var items: List<HistoryItem> = listOf()
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var mode: HistoryState.Mode = HistoryState.Mode.Normal
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private set
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val historyAdapter = HistoryAdapter(interactor)
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private val layoutManager = LinearLayoutManager(container.context)
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init {
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view.history_list.apply {
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layoutManager = this@HistoryView.layoutManager
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adapter = historyAdapter
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(itemAnimator as SimpleItemAnimator).supportsChangeAnimations = false
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}
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}
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fun update(state: HistoryState) {
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val oldMode = mode
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view.progress_bar.isVisible = state.mode === HistoryState.Mode.Deleting
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items = state.items
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mode = state.mode
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if (state.mode != oldMode) {
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interactor.onModeSwitched()
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historyAdapter.updateMode(state.mode)
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// Deselect all the previously selected items
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oldMode.selectedItems.forEach {
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historyAdapter.notifyItemChanged(it.id)
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}
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}
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if (state.mode is HistoryState.Mode.Editing) {
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val unselectedItems = oldMode.selectedItems - state.mode.selectedItems
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state.mode.selectedItems.union(unselectedItems).forEach { item ->
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historyAdapter.notifyItemChanged(item.id)
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}
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}
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when (val mode = state.mode) {
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is HistoryState.Mode.Normal ->
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setUiForNormalMode(context.getString(R.string.library_history))
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is HistoryState.Mode.Editing ->
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setUiForSelectingMode(context.getString(R.string.history_multi_select_title, mode.selectedItems.size))
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}
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}
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fun updateEmptyState(userHasHistory: Boolean) {
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history_list.isVisible = userHasHistory
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history_empty_view.isVisible = !userHasHistory
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}
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override fun onBackPressed(): Boolean {
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return interactor.onBackPressed()
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}
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}
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