222 lines
8.6 KiB
Kotlin
222 lines
8.6 KiB
Kotlin
package sushi.hardcore.droidfs.adapters
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import android.annotation.SuppressLint
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import android.graphics.Bitmap
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import android.util.LruCache
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import android.view.View
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import android.view.ViewGroup
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import android.widget.ImageView
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import android.widget.LinearLayout
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import android.widget.TextView
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import androidx.appcompat.app.AppCompatActivity
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import androidx.core.graphics.drawable.toBitmap
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import androidx.lifecycle.lifecycleScope
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import androidx.recyclerview.widget.RecyclerView
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import kotlinx.coroutines.*
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import sushi.hardcore.droidfs.FileTypes
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import sushi.hardcore.droidfs.R
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import sushi.hardcore.droidfs.ThumbnailsLoader
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import sushi.hardcore.droidfs.explorers.ExplorerElement
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import sushi.hardcore.droidfs.filesystems.EncryptedVolume
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import sushi.hardcore.droidfs.filesystems.Stat
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import sushi.hardcore.droidfs.util.PathUtils
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import java.text.DateFormat
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import java.util.*
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class ExplorerElementAdapter(
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val activity: AppCompatActivity,
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val encryptedVolume: EncryptedVolume?,
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private val listener: Listener,
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thumbnailMaxSize: Long,
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) : SelectableAdapter<ExplorerElement>(listener::onSelectionChanged) {
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val dateFormat: DateFormat = DateFormat.getDateTimeInstance(DateFormat.DEFAULT, DateFormat.DEFAULT, Locale.getDefault())
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var explorerElements = listOf<ExplorerElement>()
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@SuppressLint("NotifyDataSetChanged")
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set(value) {
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field = value
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thumbnailsCache?.evictAll()
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notifyDataSetChanged()
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}
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var isUsingListLayout = true
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private var thumbnailsLoader: ThumbnailsLoader? = null
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private var thumbnailsCache: LruCache<String, Bitmap>? = null
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var loadThumbnails = true
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init {
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if (encryptedVolume != null) {
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thumbnailsLoader = ThumbnailsLoader(activity, encryptedVolume, thumbnailMaxSize, activity.lifecycleScope).apply {
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initialize()
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}
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thumbnailsCache = object : LruCache<String, Bitmap>((Runtime.getRuntime().maxMemory() / 4).toInt()) {
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override fun sizeOf(key: String, value: Bitmap) = value.byteCount
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}
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}
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}
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interface Listener {
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fun onSelectionChanged(size: Int)
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fun onExplorerElementClick(position: Int)
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fun onExplorerElementLongClick(position: Int)
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}
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override fun getItems(): List<ExplorerElement> {
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return explorerElements
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}
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override fun toggleSelection(position: Int): Boolean {
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return if (!explorerElements[position].isParentFolder) {
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super.toggleSelection(position)
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} else {
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false
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}
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}
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override fun onItemClick(position: Int): Boolean {
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listener.onExplorerElementClick(position)
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return super.onItemClick(position)
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}
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override fun onItemLongClick(position: Int): Boolean {
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listener.onExplorerElementLongClick(position)
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return super.onItemLongClick(position)
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}
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override fun isSelectable(position: Int): Boolean {
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return !explorerElements[position].isParentFolder
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}
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open class ExplorerElementViewHolder(itemView: View) : RecyclerView.ViewHolder(itemView) {
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private val textElementName by lazy {
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itemView.findViewById<TextView>(R.id.text_element_name)
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}
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protected val textElementSize: TextView by lazy {
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itemView.findViewById(R.id.text_element_size)
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}
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protected val textElementMtime: TextView by lazy {
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itemView.findViewById(R.id.text_element_mtime)
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}
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protected val icon: ImageView by lazy {
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itemView.findViewById(R.id.icon_element)
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}
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private val selectableContainer: LinearLayout by lazy {
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itemView.findViewById(R.id.selectable_container)
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}
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open fun bind(explorerElement: ExplorerElement, position: Int) {
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textElementName.text = explorerElement.name
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(bindingAdapter as ExplorerElementAdapter?)?.setSelectable(selectableContainer, itemView, position)
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}
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}
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open class RegularElementViewHolder(itemView: View) : ExplorerElementViewHolder(itemView) {
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open fun bind(explorerElement: ExplorerElement, position: Int, isSelected: Boolean) {
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super.bind(explorerElement, position)
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textElementSize.text = PathUtils.formatSize(explorerElement.stat.size)
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(bindingAdapter as ExplorerElementAdapter?)?.let {
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textElementMtime.text = it.dateFormat.format(explorerElement.stat.mTime)
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}
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}
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}
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class FileViewHolder(itemView: View) : RegularElementViewHolder(itemView) {
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private var task = -1
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fun cancelThumbnailLoading(adapter: ExplorerElementAdapter) {
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if (task != -1) {
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adapter.thumbnailsLoader?.cancel(task)
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}
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}
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private fun setThumbnailOrDefaultIcon(fullPath: String, defaultIconId: Int) {
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var setDefaultIcon = true
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(bindingAdapter as ExplorerElementAdapter?)?.let { adapter ->
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adapter.thumbnailsCache?.let {
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val thumbnail = it.get(fullPath)
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if (thumbnail != null) {
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icon.setImageBitmap(thumbnail)
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setDefaultIcon = false
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} else if (adapter.loadThumbnails) {
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task = adapter.thumbnailsLoader!!.loadAsync(fullPath, icon) { resource ->
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val bitmap = resource.toBitmap()
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adapter.thumbnailsCache!!.put(fullPath, bitmap.copy(bitmap.config, true))
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}
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}
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}
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}
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if (setDefaultIcon) {
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icon.setImageResource(defaultIconId)
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}
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}
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override fun bind(explorerElement: ExplorerElement, position: Int, isSelected: Boolean) {
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super.bind(explorerElement, position, isSelected)
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when {
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FileTypes.isImage(explorerElement.name) -> {
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setThumbnailOrDefaultIcon(explorerElement.fullPath, R.drawable.icon_file_image)
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}
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FileTypes.isVideo(explorerElement.name) -> {
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setThumbnailOrDefaultIcon(explorerElement.fullPath, R.drawable.icon_file_video)
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}
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else -> icon.setImageResource(
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when {
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FileTypes.isText(explorerElement.name) -> R.drawable.icon_file_text
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FileTypes.isPDF(explorerElement.name) -> R.drawable.icon_file_pdf
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FileTypes.isAudio(explorerElement.name) -> R.drawable.icon_file_audio
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else -> R.drawable.icon_file_unknown
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}
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)
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}
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}
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}
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class DirectoryViewHolder(itemView: View) : RegularElementViewHolder(itemView) {
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override fun bind(explorerElement: ExplorerElement, position: Int, isSelected: Boolean) {
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super.bind(explorerElement, position, isSelected)
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icon.setImageResource(R.drawable.icon_folder)
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}
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}
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class ParentFolderViewHolder(itemView: View): ExplorerElementViewHolder(itemView) {
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override fun bind(explorerElement: ExplorerElement, position: Int) {
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super.bind(explorerElement, position)
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textElementSize.text = ""
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textElementMtime.setText(R.string.parent_folder)
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icon.setImageResource(R.drawable.icon_folder)
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}
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}
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override fun onViewDetachedFromWindow(holder: RecyclerView.ViewHolder) {
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if (holder is FileViewHolder) {
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holder.cancelThumbnailLoading(this)
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}
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}
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override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): RecyclerView.ViewHolder {
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val view = activity.layoutInflater.inflate(
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if (isUsingListLayout) {
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R.layout.adapter_explorer_element_list
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} else {
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R.layout.adapter_explorer_element_grid
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}, parent, false
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)
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return when (viewType) {
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Stat.S_IFREG -> FileViewHolder(view)
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Stat.S_IFDIR -> DirectoryViewHolder(view)
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Stat.PARENT_FOLDER_TYPE -> ParentFolderViewHolder(view)
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else -> throw IllegalArgumentException()
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}
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}
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override fun onBindViewHolder(holder: RecyclerView.ViewHolder, position: Int) {
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val element = explorerElements[position]
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if (element.isParentFolder) {
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(holder as ParentFolderViewHolder).bind(element, position)
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} else {
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(holder as RegularElementViewHolder).bind(element, position, selectedItems.contains(position))
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}
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}
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override fun getItemViewType(position: Int): Int {
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return explorerElements[position].stat.type
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}
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} |