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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.adapters.FastItemThemedAdapter
import ca.allanwang.kau.adapters.ThemableIItemColors
import ca.allanwang.kau.adapters.ThemableIItemColorsDelegate
import ca.allanwang.kau.animators.FadeScaleAnimatorAdd
import ca.allanwang.kau.animators.KauAnimator
import ca.allanwang.kau.iitems.HeaderIItem
import ca.allanwang.kau.ui.widgets.ElasticDragDismissFrameLayout
import ca.allanwang.kau.ui.widgets.InkPageIndicator
import ca.allanwang.kau.utils.*
import com.mikepenz.aboutlibraries.Libs
import com.mikepenz.aboutlibraries.entity.Library
import com.mikepenz.fastadapter.IItem
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
* If you don't need auto detect, you can pass null instead
* 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(), ViewPager.OnPageChangeListener {
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)
/**
* Holds some common configurations that may be added directly from the constructor
* Applied lazily since it needs the context to fetch resources
*/
val configs: Configs by lazy { Configs().apply { configBuilder() } }
/**
* Number of pages in the adapter
* Defaults to just the main view and lib view
*/
open val pageCount: Int = 2
/**
* Page position for the libs
* This is generated automatically if [inflateLibPage] is called
*/
private var libPage: Int = -2
/**
* Holds that status of each page
* 0 means nothing has happened
* 1 means this page has been in view at least once
* The rest is up to you
*/
lateinit var pageStatus: IntArray
/**
* Holds the lib items once they are fetched asynchronously
*/
var libItems: List<LibraryIItem>? = null
/**
* Holds the adapter for the library page; this is generated later because it uses the config colors
*/
lateinit var libAdapter: FastItemThemedAdapter<IItem<*, *>>
/**
* Global reference of the library recycler
* This is set by default through [inflateLibPage] and is used to stop scrolling
* When the draggable frame exits
* It is not required, hence its nullability
*/
private var libRecycler: RecyclerView? = null
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.kau_activity_about)
pageStatus = IntArray(pageCount)
libAdapter = FastItemThemedAdapter(configs)
LibraryIItem.bindClickEvents(libAdapter)
if (configs.textColor != null) indicator.setColour(configs.textColor!!)
with(pager) {
adapter = AboutPagerAdapter()
pageMargin = dimenPixelSize(R.dimen.kau_spacing_normal)
addOnPageChangeListener(this@AboutActivityBase)
}
indicator.setViewPager(pager)
draggableFrame.addListener(object : ElasticDragDismissFrameLayout.SystemChromeFader(this) {
override fun onDragDismissed() {
window.returnTransition = TransitionInflater.from(this@AboutActivityBase)
.inflateTransition(if (draggableFrame.translationY > 0) configs.transitionExitBottom else configs.transitionExitTop)
libRecycler?.stopScroll()
finishAfterTransition()
}
})
}
inner class Configs : ThemableIItemColors by ThemableIItemColorsDelegate() {
var cutoutTextRes: Int = -1
var cutoutText: String? = null
var cutoutDrawableRes: Int = -1
var cutoutDrawable: Drawable? = null
var cutoutForeground: Int? = null
var libPageTitleRes: Int = -1
var libPageTitle: String? = string(R.string.kau_about_libraries_intro) //This is in the string by default since it's lower priority
var transitionExitTop: Int = R.transition.kau_exit_slide_top
var transitionExitBottom: Int = R.transition.kau_exit_slide_bottom
}
/**
* Method to fetch the library list
* This is fetched asynchronously and you may override it to customize the list
*/
open fun getLibraries(libs: Libs): List<Library> = libs.prepareLibraries(this, null, null, true, true)!!
/**
* 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, position)
pageCount - 1 -> inflateLibPage(layoutInflater, parent, position)
else -> throw InvalidParameterException()
}
}
/**
* Create the main view with the cutout
*/
open fun inflateMainPage(layoutInflater: LayoutInflater, parent: ViewGroup, position: Int): View {
val fastAdapter = FastItemThemedAdapter<IItem<*, *>>(configs)
val recycler = fullLinearRecycler(fastAdapter)
fastAdapter.add(CutoutIItem {
with(configs) {
text = string(cutoutTextRes, cutoutText)
drawable = drawable(cutoutDrawableRes, cutoutDrawable)
if (configs.cutoutForeground != null) foregroundColor = configs.cutoutForeground!!
}
}.apply {
themeEnabled = configs.cutoutForeground == null
})
postInflateMainPage(fastAdapter)
return recycler
}
/**
* Open hook called just before the main page view is returned
* Feel free to add your own items to the adapter in here
*/
open fun postInflateMainPage(adapter: FastItemThemedAdapter<IItem<*, *>>) {
}
/**
* Create the lib view with the list of libraries
*/
open fun inflateLibPage(layoutInflater: LayoutInflater, parent: ViewGroup, position: Int): View {
libPage = position
val v = layoutInflater.inflate(R.layout.kau_recycler_detached_background, parent, false)
val recycler = v.findViewById<RecyclerView>(R.id.kau_recycler_detached)
libRecycler = recycler
recycler.withMarginDecoration(16, KAU_BOTTOM)
recycler.adapter = libAdapter
recycler.itemAnimator = KauAnimator(addAnimator = FadeScaleAnimatorAdd(scaleFactor = 0.7f, itemDelayFactor = 0.2f)).apply { addDuration = 300; interpolator = AnimHolder.decelerateInterpolator(this@AboutActivityBase) }
val background = v.findViewById<View>(R.id.kau_recycler_detached_background)
if (configs.backgroundColor != null) background.setBackgroundColor(configs.backgroundColor!!.colorToForeground())
doAsync {
libItems = getLibraries(
if (rClass == null) Libs(this@AboutActivityBase) else Libs(this@AboutActivityBase, Libs.toStringArray(rClass.fields))
).map { LibraryIItem(it) }
if (libPage >= 0 && pageStatus[libPage] == 1)
uiThread { addLibItems() }
}
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`
/**
* Only get page if view does not exist
*/
private fun getPage(position: Int, parent: ViewGroup): View {
if (views[position] == null) views[position] = getPage(position, layoutInflater, parent)
return views[position]!!
}
}
override fun onPageScrollStateChanged(state: Int) {}
override fun onPageScrolled(position: Int, positionOffset: Float, positionOffsetPixels: Int) {}
override fun onPageSelected(position: Int) {
if (pageStatus[position] == 0) pageStatus[position] = 1 // mark as seen if previously null
if (position == libPage && libItems != null && pageStatus[position] == 1) {
pageStatus[position] = 2 //add libs and mark as such
postDelayed(300) { addLibItems() } //delay so that the animations occur once the page is fully switched
}
}
/**
* Function that is called when the view is ready to add the lib items
* Feel free to add your own items here
*/
open fun addLibItems() {
libAdapter.add(HeaderIItem(text = configs.libPageTitle, textRes = configs.libPageTitleRes))
.add(libItems)
}
override fun onDestroy() {
AnimHolder.decelerateInterpolator.invalidate() //clear the reference to the interpolators we've used
super.onDestroy()
}
}
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