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128 lines
5.4 KiB
Kotlin
128 lines
5.4 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.library.history
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import android.content.Context
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import android.text.format.DateUtils
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import android.view.LayoutInflater
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import android.view.ViewGroup
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import androidx.paging.PagedListAdapter
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import androidx.recyclerview.widget.DiffUtil
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import org.mozilla.fenix.R
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import org.mozilla.fenix.library.SelectionHolder
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import org.mozilla.fenix.library.history.viewholders.HistoryListItemViewHolder
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import java.util.Calendar
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import java.util.Date
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enum class HistoryItemTimeGroup {
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Today, Yesterday, ThisWeek, ThisMonth, Older;
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fun humanReadable(context: Context): String = when (this) {
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Today -> context.getString(R.string.history_today)
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Yesterday -> context.getString(R.string.history_yesterday)
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ThisWeek -> context.getString(R.string.history_7_days)
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ThisMonth -> context.getString(R.string.history_30_days)
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Older -> context.getString(R.string.history_older)
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}
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}
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class HistoryAdapter(private val historyInteractor: HistoryInteractor) :
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PagedListAdapter<HistoryItem, HistoryListItemViewHolder>(historyDiffCallback),
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SelectionHolder<HistoryItem> {
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private var mode: HistoryFragmentState.Mode = HistoryFragmentState.Mode.Normal
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override val selectedItems get() = mode.selectedItems
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var pendingDeletionIds = emptySet<Long>()
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private val itemsWithHeaders: MutableMap<HistoryItemTimeGroup, Int> = mutableMapOf()
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override fun getItemViewType(position: Int): Int = HistoryListItemViewHolder.LAYOUT_ID
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override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): HistoryListItemViewHolder {
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val view = LayoutInflater.from(parent.context).inflate(viewType, parent, false)
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return HistoryListItemViewHolder(view, historyInteractor, this)
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}
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fun updateMode(mode: HistoryFragmentState.Mode) {
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this.mode = mode
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// Update the delete button alpha that the first item holds
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if (itemCount > 0) notifyItemChanged(0)
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}
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override fun onBindViewHolder(holder: HistoryListItemViewHolder, position: Int) {
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val current = getItem(position) ?: return
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val headerForCurrentItem = timeGroupForHistoryItem(current)
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val isPendingDeletion = pendingDeletionIds.contains(current.visitedAt)
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var timeGroup: HistoryItemTimeGroup? = null
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// Add or remove the header and position to the map depending on it's deletion status
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if (itemsWithHeaders.containsKey(headerForCurrentItem)) {
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if (isPendingDeletion && itemsWithHeaders[headerForCurrentItem] == position) {
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itemsWithHeaders.remove(headerForCurrentItem)
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} else if (isPendingDeletion && itemsWithHeaders[headerForCurrentItem] != position) {
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// do nothing
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} else {
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if (position <= itemsWithHeaders[headerForCurrentItem] as Int) {
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itemsWithHeaders[headerForCurrentItem] = position
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timeGroup = headerForCurrentItem
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}
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}
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} else if (!isPendingDeletion) {
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itemsWithHeaders[headerForCurrentItem] = position
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timeGroup = headerForCurrentItem
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}
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holder.bind(current, timeGroup, position == 0, mode, isPendingDeletion)
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}
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fun updatePendingDeletionIds(pendingDeletionIds: Set<Long>) {
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this.pendingDeletionIds = pendingDeletionIds
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}
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companion object {
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private const val zeroDays = 0
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private const val oneDay = 1
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private const val sevenDays = 7
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private const val thirtyDays = 30
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private val zeroDaysAgo = getDaysAgo(zeroDays).time
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private val oneDayAgo = getDaysAgo(oneDay).time
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private val sevenDaysAgo = getDaysAgo(sevenDays).time
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private val thirtyDaysAgo = getDaysAgo(thirtyDays).time
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private val yesterdayRange = LongRange(oneDayAgo, zeroDaysAgo)
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private val lastWeekRange = LongRange(sevenDaysAgo, oneDayAgo)
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private val lastMonthRange = LongRange(thirtyDaysAgo, sevenDaysAgo)
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private fun getDaysAgo(daysAgo: Int): Date {
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val calendar = Calendar.getInstance()
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calendar.add(Calendar.DAY_OF_YEAR, -daysAgo)
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return calendar.time
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}
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private fun timeGroupForHistoryItem(item: HistoryItem): HistoryItemTimeGroup {
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return when {
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DateUtils.isToday(item.visitedAt) -> HistoryItemTimeGroup.Today
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yesterdayRange.contains(item.visitedAt) -> HistoryItemTimeGroup.Yesterday
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lastWeekRange.contains(item.visitedAt) -> HistoryItemTimeGroup.ThisWeek
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lastMonthRange.contains(item.visitedAt) -> HistoryItemTimeGroup.ThisMonth
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else -> HistoryItemTimeGroup.Older
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}
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}
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private val historyDiffCallback = object : DiffUtil.ItemCallback<HistoryItem>() {
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override fun areItemsTheSame(oldItem: HistoryItem, newItem: HistoryItem): Boolean {
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return oldItem == newItem
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}
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override fun areContentsTheSame(oldItem: HistoryItem, newItem: HistoryItem): Boolean {
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return oldItem == newItem
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}
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override fun getChangePayload(oldItem: HistoryItem, newItem: HistoryItem): Any? {
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return newItem
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}
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}
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}
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}
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