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package com.pitchedapps.frost.utils
import android.content.Context
import android.content.res.XmlResourceParser
import android.support.annotation.LayoutRes
import android.support.annotation.XmlRes
import android.support.v7.widget.RecyclerView
import android.view.LayoutInflater
import android.view.View
import android.view.ViewGroup
import android.widget.TextView
import ca.allanwang.kau.R
import org.xmlpull.v1.XmlPullParser
/**
* Created by Allan Wang on 2017-05-28.
*/
internal class ChangelogAdapter(val items: List<Pair<String, ChangelogType>>) : RecyclerView.Adapter<ChangelogAdapter.ChangelogVH>() {
override fun onCreateViewHolder(parent: ViewGroup, viewType: Int) = ChangelogVH(LayoutInflater.from(parent.context)
.inflate(getLayout(viewType), parent, false))
private fun getLayout(position: Int) = items[position].second.layout
override fun onBindViewHolder(holder: ChangelogVH, position: Int) {
holder.text.text = items[position].first
}
override fun getItemId(position: Int) = position.toLong()
override fun getItemViewType(position: Int) = position
override fun getItemCount() = items.size
internal class ChangelogVH(itemView: View) : RecyclerView.ViewHolder(itemView) {
val text: TextView = itemView.findViewById(R.id.kau_changelog_text) as TextView
}
}
internal fun parse(context: Context, @XmlRes xmlRes: Int): List<Pair<String, ChangelogType>> {
val items = mutableListOf<Pair<String, ChangelogType>>()
context.resources.getXml(xmlRes).use {
parser ->
var eventType = parser.eventType
while (eventType != XmlPullParser.END_DOCUMENT) {
if (eventType == XmlPullParser.START_TAG)
ChangelogType.values.any { it.add(parser, items) }
eventType = parser.next()
}
}
return items
}
internal enum class ChangelogType(val tag: String, val attr: String, @LayoutRes val layout: Int) {
TITLE("title", "version", R.layout.kau_changelog_title),
ITEM("item", "text", R.layout.kau_changelog_content);
companion object {
val values = values()
}
/**
* Returns true if tag matches; false otherwise
*/
fun add(parser: XmlResourceParser, list: MutableList<Pair<String, ChangelogType>>): Boolean {
if (parser.name != tag) return false
if (parser.getAttributeValue(null, attr).isNotBlank())
list.add(Pair(parser.getAttributeValue(null, attr), this))
return true
}
}
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