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package moe.yuuta.workmode
import android.app.Activity
import android.content.Context
import android.content.Intent
import android.content.pm.ApplicationInfo
import android.content.pm.PackageManager
import android.graphics.drawable.Drawable
import android.os.Bundle
import android.util.LruCache
import android.view.LayoutInflater
import android.view.MenuItem
import android.view.View
import android.view.ViewGroup
import android.widget.*
import androidx.appcompat.app.AppCompatActivity
import androidx.core.content.ContextCompat
import androidx.recyclerview.widget.DiffUtil
import androidx.recyclerview.widget.LinearLayoutManager
import androidx.recyclerview.widget.RecyclerView
import com.elvishew.xlog.Logger
import com.elvishew.xlog.XLog
import com.google.android.material.floatingactionbutton.FloatingActionButton
import moe.yuuta.workmode.async.Async
import moe.yuuta.workmode.async.Callback
import moe.yuuta.workmode.async.Runnable
import moe.yuuta.workmode.async.StoppableGroup
import moe.yuuta.workmode.utils.Utils
import java.util.stream.Collectors
class ApplicationPickerActivity : AppCompatActivity() {
companion object {
const val EXTRA_SELECTED_PACKAGE_NAME = "moe.yuuta.workmode.ApplicationPickerActivity.EXTRA_SELECTED_PACKAGE_NAME"
}
private val logger: Logger = XLog.tag("ApplicationPickerActivity").build()
private lateinit var mAdapter: Adapter
private val mStoppableGroup: StoppableGroup = StoppableGroup()
private lateinit var mProgressBar: ProgressBar
private lateinit var fab: FloatingActionButton
private fun setResultAndFinish(packageNames: Array<String>?) {
setResult(if (packageNames == null) Activity.RESULT_CANCELED else Activity.RESULT_OK,
Intent().putExtra(EXTRA_SELECTED_PACKAGE_NAME, packageNames ?: arrayOf()))
finish()
}
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_application_picker)
supportActionBar?.setDisplayHomeAsUpEnabled(true)
val recyclerView: RecyclerView = findViewById(R.id.recycler_apps)
fab = findViewById(R.id.fab_ok)
mProgressBar = findViewById(R.id.progress_load)
recyclerView.layoutManager = LinearLayoutManager(this, RecyclerView.VERTICAL, false)
mAdapter = Adapter()
recyclerView.adapter = mAdapter
fab.setOnClickListener {
setResultAndFinish(mAdapter.checked.toTypedArray())
}
load()
}
override fun onOptionsItemSelected(item: MenuItem): Boolean {
return when (item.itemId) {
android.R.id.home -> {
onBackPressed()
true
}
else -> super.onOptionsItemSelected(item)
}
}
private fun load() {
mStoppableGroup.add(Async.beginTask(object : Runnable<List<SelectedApp>> {
override fun run(): List<SelectedApp> {
val selected = intent.getStringArrayExtra(EXTRA_SELECTED_PACKAGE_NAME) ?: arrayOf()
return packageManager.getInstalledApplications(0)
.stream()
.filter(Utils.buildGeneralApplicationInfoFilter(this@ApplicationPickerActivity))
.sorted(ApplicationInfo.DisplayNameComparator(packageManager))
.map {
return@map SelectedApp(it.packageName, selected.contains(it.packageName))
}
.collect(Collectors.toList())
}
}, object : Callback<List<SelectedApp>> {
override fun onStart() {
mProgressBar.visibility = View.VISIBLE
fab.visibility = View.GONE
}
override fun onStop(success: Boolean, result: List<SelectedApp>?, e: Throwable?) {
mProgressBar.visibility = View.GONE
fab.visibility = View.VISIBLE
if (success && result != null) {
display(result)
} else {
Toast.makeText(this@ApplicationPickerActivity,
R.string.error_load_applications, Toast.LENGTH_LONG)
.show()
if (e != null) {
logger.e("Load applications", e)
} else {
logger.e("Cannot load applications (no stacktrace)")
}
// Not sure if the toast will dismiss immediately
// setResultAndFinish()
}
}
}))
}
private fun display(result: List<SelectedApp>) {
val diff = DiffUtil.calculateDiff(object : DiffUtil.Callback() {
override fun getOldListSize(): Int = mAdapter.itemCount
override fun getNewListSize(): Int = result.size
override fun areItemsTheSame(oldItemPosition: Int, newItemPosition: Int): Boolean =
mAdapter.data[oldItemPosition]::class.java.name ==
result[newItemPosition]::class.java.name
override fun areContentsTheSame(oldItemPosition: Int, newItemPosition: Int): Boolean =
mAdapter.data[oldItemPosition] ==
result[newItemPosition]
})
mAdapter.data = result
diff.dispatchUpdatesTo(mAdapter)
}
override fun onDestroy() {
mStoppableGroup.stop()
mAdapter.destroy()
super.onDestroy()
}
private class Adapter : RecyclerView.Adapter<Adapter.VH>() {
private val mIconMemoryCaches: LruCache<String, Drawable> =
LruCache(Runtime.getRuntime().maxMemory().toInt() / 5)
private val mStoppableGroup: StoppableGroup = StoppableGroup()
internal var data: List<SelectedApp> = listOf()
internal val checked: MutableSet<String> = mutableSetOf()
override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): VH =
VH(LayoutInflater.from(parent.context).inflate(R.layout.item_application_select, parent, false))
override fun getItemCount(): Int = data.size
override fun onBindViewHolder(holder: VH, position: Int) {
val context = holder.itemView.context
val packageInfo = data[position]
val icon = getIconFromMemoryCache(packageInfo.packageName)
if (icon != null) {
holder.icon.setImageDrawable(icon)
} else {
loadIcon(packageInfo.packageName, holder.itemView.context, holder.icon)
}
holder.title.text = context
.packageManager
.getApplicationLabel(
context.packageManager.getApplicationInfo(packageInfo.packageName, 0)
)
if (packageInfo.selected) checked.add(packageInfo.packageName)
else checked.remove(packageInfo.packageName)
holder.checkBox.isChecked = checked.contains(packageInfo.packageName)
holder.checkBox.setOnClickListener {
val selected = holder.checkBox.isChecked
if (selected) checked.add(packageInfo.packageName)
else checked.remove(packageInfo.packageName)
}
}
class VH(itemView: View) : RecyclerView.ViewHolder(itemView) {
internal val icon: ImageView = itemView.findViewById(android.R.id.icon)
internal val title: TextView = itemView.findViewById(android.R.id.title)
internal val checkBox: CheckBox = itemView.findViewById(android.R.id.checkbox)
}
private fun addDrawableToMemoryCache(pkg: String?, icon: Drawable) {
if (getIconFromMemoryCache(pkg) == null) {
mIconMemoryCaches.put(pkg ?: "", icon)
}
}
private fun getIconFromMemoryCache(pkg: String?): Drawable? {
return mIconMemoryCaches.get(pkg ?: "")
}
private fun loadIcon(pkg: String, context: Context, imageView: ImageView) {
mStoppableGroup.add(Async.beginTask(object : Runnable<Drawable> {
override fun run(): Drawable {
var icon: Drawable?
try {
icon = context.packageManager
.getApplicationIcon(pkg)
} catch (ignore: PackageManager.NameNotFoundException) {
icon = null
}
if (icon == null) {
icon = ContextCompat.getDrawable(context, android.R.mipmap.sym_def_app_icon)!!
}
addDrawableToMemoryCache(pkg, icon)
return icon
}
}, object : Callback<Drawable> {
override fun onStop(success: Boolean, result: Drawable?, e: Throwable?) {
if (success && result != null) imageView.setImageDrawable(result)
}
}))
}
fun destroy() {
mStoppableGroup.stop()
}
}
}
private data class SelectedApp(
val packageName: String,
val selected: Boolean
)
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