81 lines
3.3 KiB
Kotlin
81 lines
3.3 KiB
Kotlin
/* Copyright 2021 Tusky Contributors
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*
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* This file is a part of Tusky.
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*
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* This program is free software; you can redistribute it and/or modify it under the terms of the
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* GNU General Public License as published by the Free Software Foundation; either version 3 of the
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* License, or (at your option) any later version.
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*
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* Tusky is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even
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* the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
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* Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along with Tusky; if not,
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* see <http://www.gnu.org/licenses>. */
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package com.keylesspalace.tusky.components.conversation
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import android.view.LayoutInflater
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import android.view.ViewGroup
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import androidx.paging.PagingDataAdapter
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import androidx.recyclerview.widget.DiffUtil
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import com.keylesspalace.tusky.R
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import com.keylesspalace.tusky.adapter.StatusBaseViewHolder
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import com.keylesspalace.tusky.interfaces.StatusActionListener
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import com.keylesspalace.tusky.util.StatusDisplayOptions
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class ConversationAdapter(
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private var statusDisplayOptions: StatusDisplayOptions,
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private val listener: StatusActionListener
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) : PagingDataAdapter<ConversationViewData, ConversationViewHolder>(CONVERSATION_COMPARATOR) {
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var mediaPreviewEnabled: Boolean
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get() = statusDisplayOptions.mediaPreviewEnabled
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set(mediaPreviewEnabled) {
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statusDisplayOptions = statusDisplayOptions.copy(
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mediaPreviewEnabled = mediaPreviewEnabled
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)
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}
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override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): ConversationViewHolder {
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val view = LayoutInflater.from(parent.context).inflate(R.layout.item_conversation, parent, false)
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return ConversationViewHolder(view, statusDisplayOptions, listener)
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}
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override fun onBindViewHolder(holder: ConversationViewHolder, position: Int) {
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onBindViewHolder(holder, position, emptyList())
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}
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override fun onBindViewHolder(
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holder: ConversationViewHolder,
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position: Int,
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payloads: List<Any>
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) {
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getItem(position)?.let { conversationViewData ->
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holder.setupWithConversation(conversationViewData, payloads.firstOrNull())
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}
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}
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companion object {
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val CONVERSATION_COMPARATOR = object : DiffUtil.ItemCallback<ConversationViewData>() {
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override fun areItemsTheSame(oldItem: ConversationViewData, newItem: ConversationViewData): Boolean {
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return oldItem.id == newItem.id
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}
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override fun areContentsTheSame(oldItem: ConversationViewData, newItem: ConversationViewData): Boolean {
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return false // Items are different always. It allows to refresh timestamp on every view holder update
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}
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override fun getChangePayload(oldItem: ConversationViewData, newItem: ConversationViewData): Any? {
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return if (oldItem == newItem) {
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// If items are equal - update timestamp only
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listOf(StatusBaseViewHolder.Key.KEY_CREATED)
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} else {
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// If items are different - update the whole view holder
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null
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}
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}
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}
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}
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}
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