mirror of https://git.sr.ht/~oppen/ariane
94 lines
4.0 KiB
Kotlin
94 lines
4.0 KiB
Kotlin
package oppen.tva.ui.gemtext
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import android.view.LayoutInflater
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import android.view.View
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import android.view.ViewGroup
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import androidx.recyclerview.widget.RecyclerView
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import kotlinx.android.synthetic.main.gemtext_link.view.*
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import kotlinx.android.synthetic.main.gemtext_text.view.gemtext_text_textview
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import oppen.tva.R
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import java.net.URI
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class GemtextAdapter(val onLink: (link: URI) -> Unit): RecyclerView.Adapter<GemtextAdapter.ViewHolder>() {
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var lines = mutableListOf<String>()
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val typeText = 0
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val typeH1 = 1
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val typeH2 = 2
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val typeH3 = 3
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val typeListItem = 4
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val typeLink = 5
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sealed class ViewHolder(itemView: View) : RecyclerView.ViewHolder(itemView){
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class Text(itemView: View): ViewHolder(itemView)
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class H1(itemView: View): ViewHolder(itemView)
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class H2(itemView: View): ViewHolder(itemView)
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class H3(itemView: View): ViewHolder(itemView)
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class ListItem(itemView: View): ViewHolder(itemView)
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class Link(itemView: View): ViewHolder(itemView)
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}
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fun render(lines: List<String>){
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this.lines.clear()
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this.lines.addAll(lines)
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notifyDataSetChanged()
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}
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override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): ViewHolder {
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return when(viewType){
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typeText -> ViewHolder.Text( LayoutInflater.from(parent.context).inflate(R.layout.gemtext_text, parent, false) )
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typeH1 -> ViewHolder.H1( LayoutInflater.from(parent.context).inflate(R.layout.gemtext_h1, parent, false) )
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typeH2 -> ViewHolder.H1( LayoutInflater.from(parent.context).inflate(R.layout.gemtext_h2, parent, false) )
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typeH3 -> ViewHolder.H1( LayoutInflater.from(parent.context).inflate(R.layout.gemtext_h3, parent, false) )
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typeListItem -> ViewHolder.ListItem( LayoutInflater.from(parent.context).inflate(R.layout.gemtext_text, parent, false) )
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typeLink -> ViewHolder.Link( LayoutInflater.from(parent.context).inflate(R.layout.gemtext_link, parent, false) )
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else -> ViewHolder.Text( LayoutInflater.from(parent.context).inflate(R.layout.gemtext_text, parent, false) )
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}
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}
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override fun getItemViewType(position: Int): Int {
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val line = lines[position]
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return when {
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line.startsWith("###") -> typeH3
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line.startsWith("##") -> typeH2
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line.startsWith("#") -> typeH1
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line.startsWith("*") -> typeListItem
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line.startsWith("=>") -> typeLink
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else -> typeText
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}
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}
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override fun getItemCount(): Int = lines.size
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override fun onBindViewHolder(holder: ViewHolder, position: Int) {
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val line = lines[position]
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when(holder){
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is ViewHolder.Text -> holder.itemView.gemtext_text_textview.text = line
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is ViewHolder.H1 -> holder.itemView.gemtext_text_textview.text = line.drop(2).trim()
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is ViewHolder.H2 -> holder.itemView.gemtext_text_textview.text = line.drop(3).trim()
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is ViewHolder.H3 -> holder.itemView.gemtext_text_textview.text = line.drop(4).trim()
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is ViewHolder.ListItem -> holder.itemView.gemtext_text_textview.text = "• ${line.drop(1)}".trim()
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is ViewHolder.Link -> {
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println("Tva: link: $line")
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val linkParts = line.substring(2).trim().split("\\s+".toRegex(), 2)
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var linkName = linkParts[0]
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if(linkParts.size > 1) {
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linkName = linkParts[1]
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}
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val displayText = linkName
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holder.itemView.gemtext_text_textview.text = displayText
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holder.itemView.gemtext_text_textview.paint.isUnderlineText = true
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holder.itemView.gemtext_link.setOnClickListener {
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onLink(getUri(lines[holder.adapterPosition]))
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}
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}
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}
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}
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private fun getUri(linkLine: String): URI{
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val linkParts = linkLine.substring(2).trim().split("\\s+".toRegex(), 2)
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return URI.create(linkParts.first())
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}
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} |