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package ca.allanwang.kau.about
import android.graphics.drawable.Drawable
import android.os.Bundle
import android.support.v4.view.PagerAdapter
import android.support.v4.view.ViewPager
import android.support.v7.app.AppCompatActivity
import android.support.v7.widget.RecyclerView
import android.transition.TransitionInflater
import android.view.LayoutInflater
import android.view.View
import android.view.ViewGroup
import ca.allanwang.kau.R
import ca.allanwang.kau.iitems.CutoutIItem
import ca.allanwang.kau.iitems.LibraryIItem
import ca.allanwang.kau.utils.*
import ca.allanwang.kau.widgets.ElasticDragDismissFrameLayout
import ca.allanwang.kau.widgets.InkPageIndicator
import com.mikepenz.aboutlibraries.Libs
import com.mikepenz.aboutlibraries.entity.Library
import com.mikepenz.fastadapter.IItem
import com.mikepenz.fastadapter.commons.adapters.FastItemAdapter
import org.jetbrains.anko.doAsync
import org.jetbrains.anko.uiThread
import java.security.InvalidParameterException
/**
* Created by Allan Wang on 2017-06-28.
*
* Floating About Activity Panel for your app
* This contains all the necessary layouts, and can be extended and configured using the [configBuilder]
* The [rClass] is necessary to generate the list of libraries used in your app, and should point to your app's
* R.string::class.java
* Note that for the auto detection to work, the R fields must be excluded from Proguard
* Manual lib listings and other extra modifications can be done so by overriding the open functions
*/
abstract class AboutActivityBase(val rClass: Class<*>, val configBuilder: Configs.() -> Unit = {}) : AppCompatActivity() {
val draggableFrame: ElasticDragDismissFrameLayout by bindView(R.id.about_draggable_frame)
val pager: ViewPager by bindView(R.id.about_pager)
val indicator: InkPageIndicator by bindView(R.id.about_indicator)
val configs: Configs by lazy { Configs().apply { configBuilder() } }
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.kau_activity_about)
with(pager) {
adapter = AboutPagerAdapter()
pageMargin = dimenPixelSize(R.dimen.kau_spacing_normal)
}
indicator.setViewPager(pager)
draggableFrame.addListener(object : ElasticDragDismissFrameLayout.SystemChromeFader(this) {
override fun onDragDismissed() {
// if we drag dismiss downward then the default reversal of the enter
// transition would slide content upward which looks weird. So reverse it.
if (draggableFrame.translationY > 0) {
window.returnTransition = TransitionInflater.from(this@AboutActivityBase)
.inflateTransition(configs.transitionExitReversed)
}
finishAfterTransition()
}
})
}
inner class Configs {
var cutoutTextRes: Int = -1
var cutoutText: String? = null
var cutoutDrawableRes: Int = -1
var cutoutDrawable: Drawable? = null
var mainPageTitleRes: Int = -1
var mainPageTitle: String = "Kau test"
var libPageTitleRes: Int = -1
var libPageTitle: String? = string(R.string.kau_about_libraries_intro)
var transitionExitReversed: Int = R.transition.kau_about_return_downward
}
open fun getLibraries(libs: Libs): List<Library> = libs.prepareLibraries(this, null, null, true, true)
open val pageCount: Int = 2
/**
* Gets the view associated with the given page position
* Keep in mind that when inflating, do NOT add the view to the viewgroup
* Use layoutInflater.inflate(id, parent, false)
*/
open fun getPage(position: Int, layoutInflater: LayoutInflater, parent: ViewGroup): View {
return when (position) {
0 -> inflateMainPage(layoutInflater, parent)
pageCount - 1 -> inflateLibPage(layoutInflater, parent)
else -> throw InvalidParameterException()
}
}
open fun inflateMainPage(layoutInflater: LayoutInflater, parent: ViewGroup): View {
val fastAdapter = FastItemAdapter<IItem<*, *>>()
val recycler = fullLinearRecycler {
adapter = fastAdapter
}
fastAdapter.add(CutoutIItem {
with(configs) {
text = string(cutoutTextRes, cutoutText)
drawable = drawable(cutoutDrawableRes, cutoutDrawable)
}
})
return recycler
}
open fun inflateLibPage(layoutInflater: LayoutInflater, parent: ViewGroup): View {
val v = layoutInflater.inflate(R.layout.kau_recycler_detached_background, parent, false)
val fastAdapter = FastItemAdapter<IItem<*, *>>()
val recycler = v.findViewById<RecyclerView>(R.id.kau_recycler_detached)
recycler.adapter = fastAdapter
val background = v.findViewById<View>(R.id.kau_recycler_detached_background)
doAsync {
val libs = getLibraries(Libs(this@AboutActivityBase, Libs.toStringArray(rClass.fields))).map { LibraryIItem(it) }
uiThread {
recycler.transitionDelayed(R.transition.kau_enter_slide_top) //TODO fix this
fastAdapter.add(libs)
}
}
return v
}
inner class AboutPagerAdapter : PagerAdapter() {
private val layoutInflater: LayoutInflater = LayoutInflater.from(this@AboutActivityBase)
private val views = Array<View?>(pageCount) { null }
override fun instantiateItem(collection: ViewGroup, position: Int): Any {
val layout = getPage(position, collection)
collection.addView(layout)
return layout
}
override fun destroyItem(collection: ViewGroup, position: Int, view: Any) {
collection.removeView(view as View)
views[position] = null
}
override fun getCount(): Int = pageCount
override fun isViewFromObject(view: View, `object`: Any): Boolean = view === `object`
private fun getPage(position: Int, parent: ViewGroup): View {
if (views[position] == null) views[position] = getPage(position, layoutInflater, parent)
return views[position]!!
}
}
}
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