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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.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.internal.KauBaseActivity
import ca.allanwang.kau.ui.widgets.ElasticDragDismissFrameLayout
import ca.allanwang.kau.ui.widgets.InkPageIndicator
import ca.allanwang.kau.utils.AnimHolder
import ca.allanwang.kau.utils.bindView
import ca.allanwang.kau.utils.dimenPixelSize
import com.mikepenz.aboutlibraries.Libs
import com.mikepenz.aboutlibraries.entity.Library
import com.mikepenz.fastadapter.IItem
/**
* 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<*>?, private val configBuilder: Configs.() -> Unit = {}) : KauBaseActivity(), ViewPager.OnPageChangeListener {
private val draggableFrame: ElasticDragDismissFrameLayout by bindView(R.id.about_draggable_frame)
private val pager: ViewPager by bindView(R.id.about_pager)
private val indicator: InkPageIndicator by bindView(R.id.about_indicator)
val currentPage
get() = pager.currentItem
/**
* 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() } }
/**
* 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
val panels: List<AboutPanelContract> by lazy {
val defaultPanels = mutableListOf(AboutPanelMain(), AboutPanelLibs())
if (configs.faqXmlRes != -1) defaultPanels.add(AboutPanelFaqs())
defaultPanels
}
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.kau_activity_about)
pageStatus = IntArray(panels.size)
pageStatus[0] = 2 //the first page is instantly visible
if (configs.textColor != null) indicator.setColour(configs.textColor!!)
with(pager) {
adapter = AboutPagerAdapter()
pageMargin = dimenPixelSize(R.dimen.kau_spacing_normal)
offscreenPageLimit = panels.size - 1
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) R.transition.kau_exit_slide_bottom else R.transition.kau_exit_slide_top)
panels[currentPage].recycler?.stopScroll()
finishAfterTransition()
}
})
panels.forEachIndexed { index, contract -> contract.loadItems(this, index) }
}
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 = R.string.kau_about_libraries_intro
var libPageTitle: String? = null
set(value) {
field = value
libPageTitleRes = -1 //reset res so we don't use our default
}
var faqXmlRes: Int = -1
var faqPageTitleRes: Int = R.string.kau_about_faq_intro
var faqPageTitle: String? = null
set(value) {
field = value
faqPageTitleRes = -1 //reset res so we don't use our default
}
/**
* Whether new lines should be included
*/
var faqParseNewLine: Boolean = true
}
/**
* For [mainPanel]
*
* 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<*, *>>) {
}
/**
* For [libPanel]
*
* 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)!!
/*
* -------------------------------------------------------------------
* Page 3: FAQ
* -------------------------------------------------------------------
*/
private inner class AboutPagerAdapter : PagerAdapter() {
private val layoutInflater: LayoutInflater = LayoutInflater.from(this@AboutActivityBase)
private val views = Array<View?>(panels.size) { 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 = panels.size
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] = panels[position]
.inflatePage(this@AboutActivityBase, parent, position)
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 (pageStatus[position] == 1) panels[position].addItems(this, position)
}
override fun onDestroy() {
AnimHolder.decelerateInterpolator.invalidate() //clear the reference to the interpolators we've used
super.onDestroy()
}
}
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