220 lines
8.8 KiB
Kotlin
220 lines
8.8 KiB
Kotlin
package sushi.hardcore.droidfs.adapters
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import android.graphics.drawable.Drawable
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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.recyclerview.widget.RecyclerView
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import com.bumptech.glide.Glide
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import com.bumptech.glide.request.target.DrawableImageViewTarget
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import com.bumptech.glide.request.transition.Transition
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import sushi.hardcore.droidfs.ConstValues
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import sushi.hardcore.droidfs.GocryptfsVolume
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import sushi.hardcore.droidfs.R
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import sushi.hardcore.droidfs.explorers.ExplorerElement
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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 gocryptfsVolume: GocryptfsVolume?,
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val onExplorerElementClick: (Int) -> Unit,
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val onExplorerElementLongClick: (Int) -> Unit
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) : RecyclerView.Adapter<RecyclerView.ViewHolder>() {
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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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val selectedItems: MutableList<Int> = ArrayList()
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override fun getItemCount(): Int {
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return explorerElements.size
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}
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private fun toggleSelection(position: Int): Boolean {
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if (!explorerElements[position].isParentFolder) {
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if (selectedItems.contains(position)) {
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selectedItems.remove(position)
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} else {
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selectedItems.add(position)
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return true
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}
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}
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return false
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}
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private fun onItemClick(position: Int): Boolean {
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onExplorerElementClick(position)
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if (selectedItems.isNotEmpty()) {
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return toggleSelection(position)
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}
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return false
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}
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private fun onItemLongClick(position: Int): Boolean {
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onExplorerElementLongClick(position)
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return toggleSelection(position)
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}
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fun selectAll() {
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for (i in explorerElements.indices) {
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if (!selectedItems.contains(i) && !explorerElements[i].isParentFolder) {
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selectedItems.add(i)
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}
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}
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notifyDataSetChanged()
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}
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fun unSelectAll() {
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selectedItems.clear()
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notifyDataSetChanged()
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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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protected fun setBackground(isSelected: Boolean) {
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itemView.setBackgroundResource(if (isSelected) { R.color.itemSelected } else { 0 })
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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?)?.let { adapter ->
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selectableContainer.setOnClickListener {
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setBackground(adapter.onItemClick(position))
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}
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selectableContainer.setOnLongClickListener {
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setBackground(adapter.onItemLongClick(position))
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true
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}
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}
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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.size)
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(bindingAdapter as ExplorerElementAdapter?)?.let {
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textElementMtime.text = it.dateFormat.format(explorerElement.mTime)
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}
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setBackground(isSelected)
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}
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}
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class FileViewHolder(itemView: View) : RegularElementViewHolder(itemView) {
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var displayThumbnail = true
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var target: DrawableImageViewTarget? = null
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private fun loadThumbnail(fullPath: String) {
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(bindingAdapter as ExplorerElementAdapter?)?.let { adapter ->
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adapter.gocryptfsVolume?.let { volume ->
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displayThumbnail = true
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Thread {
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volume.loadWholeFile(fullPath, maxSize = 50_000_000).first?.let {
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if (displayThumbnail) {
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adapter.activity.runOnUiThread {
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if (displayThumbnail) {
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target = Glide.with(adapter.activity).load(it).into(object : DrawableImageViewTarget(icon) {
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override fun onResourceReady(
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resource: Drawable,
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transition: Transition<in Drawable>?
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) {
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super.onResourceReady(resource, transition)
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target = 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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}
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}.start()
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}
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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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icon.setImageResource(
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when {
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ConstValues.isImage(explorerElement.name) -> {
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loadThumbnail(explorerElement.fullPath)
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R.drawable.icon_file_image
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}
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ConstValues.isVideo(explorerElement.name) -> {
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loadThumbnail(explorerElement.fullPath)
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R.drawable.icon_file_video
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}
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ConstValues.isText(explorerElement.name) -> R.drawable.icon_file_text
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ConstValues.isPDF(explorerElement.name) -> R.drawable.icon_file_pdf
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ConstValues.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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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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//cancel pending thumbnail display
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holder.displayThumbnail = false
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holder.target?.let {
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Glide.with(activity).clear(it)
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}
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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(R.layout.adapter_explorer_element, parent, false)
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return when (viewType) {
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ExplorerElement.REGULAR_FILE_TYPE -> FileViewHolder(view)
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ExplorerElement.DIRECTORY_TYPE -> DirectoryViewHolder(view)
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ExplorerElement.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].elementType.toInt()
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}
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} |