Yuito-app-android/app/src/main/java/com/keylesspalace/tusky/components/viewthread/ThreadAdapter.kt

97 lines
3.8 KiB
Kotlin

/* Copyright 2021 Tusky Contributors
*
* This file is a part of Tusky.
*
* This program is free software; you can redistribute it and/or modify it under the terms of the
* GNU General Public License as published by the Free Software Foundation; either version 3 of the
* License, or (at your option) any later version.
*
* Tusky is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even
* the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
* Public License for more details.
*
* You should have received a copy of the GNU General Public License along with Tusky; if not,
* see <http://www.gnu.org/licenses>. */
package com.keylesspalace.tusky.components.viewthread
import android.view.LayoutInflater
import android.view.ViewGroup
import androidx.recyclerview.widget.DiffUtil
import androidx.recyclerview.widget.ListAdapter
import com.keylesspalace.tusky.R
import com.keylesspalace.tusky.adapter.StatusBaseViewHolder
import com.keylesspalace.tusky.adapter.StatusDetailedViewHolder
import com.keylesspalace.tusky.adapter.StatusViewHolder
import com.keylesspalace.tusky.interfaces.StatusActionListener
import com.keylesspalace.tusky.util.StatusDisplayOptions
import com.keylesspalace.tusky.viewdata.StatusViewData
class ThreadAdapter(
private val statusDisplayOptions: StatusDisplayOptions,
private val statusActionListener: StatusActionListener
) : ListAdapter<StatusViewData.Concrete, StatusBaseViewHolder>(ThreadDifferCallback) {
override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): StatusBaseViewHolder {
return when (viewType) {
VIEW_TYPE_STATUS -> {
val view = LayoutInflater.from(parent.context)
.inflate(R.layout.item_status, parent, false)
StatusViewHolder(view)
}
VIEW_TYPE_STATUS_DETAILED -> {
val view = LayoutInflater.from(parent.context)
.inflate(R.layout.item_status_detailed, parent, false)
StatusDetailedViewHolder(view)
}
else -> error("Unknown item type: $viewType")
}
}
override fun onBindViewHolder(viewHolder: StatusBaseViewHolder, position: Int) {
val status = getItem(position)
viewHolder.setupWithStatus(status, statusActionListener, statusDisplayOptions)
}
override fun getItemViewType(position: Int): Int {
return if (getItem(position).isDetailed) {
VIEW_TYPE_STATUS_DETAILED
} else {
VIEW_TYPE_STATUS
}
}
companion object {
private const val TAG = "ThreadAdapter"
private const val VIEW_TYPE_STATUS = 0
private const val VIEW_TYPE_STATUS_DETAILED = 1
val ThreadDifferCallback = object : DiffUtil.ItemCallback<StatusViewData.Concrete>() {
override fun areItemsTheSame(
oldItem: StatusViewData.Concrete,
newItem: StatusViewData.Concrete
): Boolean {
return oldItem.id == newItem.id
}
override fun areContentsTheSame(
oldItem: StatusViewData.Concrete,
newItem: StatusViewData.Concrete
): Boolean {
return false // Items are different always. It allows to refresh timestamp on every view holder update
}
override fun getChangePayload(
oldItem: StatusViewData.Concrete,
newItem: StatusViewData.Concrete
): Any? {
return if (oldItem == newItem) {
// If items are equal - update timestamp only
listOf(StatusBaseViewHolder.Key.KEY_CREATED)
} else // If items are different - update the whole view holder
null
}
}
}
}