parent
a2d53c439e
commit
2ca62c4eda
@ -1,65 +0,0 @@
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package eu.kanade.tachiyomi.widget
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import android.view.View
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import android.view.ViewGroup
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import androidx.viewpager.widget.ViewPager
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import com.nightlynexus.viewstatepageradapter.ViewStatePagerAdapter
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import java.util.Stack
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abstract class RecyclerViewPagerAdapter : ViewStatePagerAdapter() {
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private val pool = HashMap<Int, Stack<View>>()
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var recycle = true
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set(value) {
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if (!value) pool.clear()
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field = value
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}
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protected abstract fun getViewType(position: Int): Int
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protected abstract fun inflateView(container: ViewGroup, viewType: Int): View
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protected abstract fun bindView(view: View, position: Int)
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protected open fun recycleView(view: View, position: Int) {}
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override fun createView(container: ViewGroup, position: Int): View {
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val viewType = getViewType(position)
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val view = if (pool[viewType] != null && pool[viewType]!!.isNotEmpty()) {
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pool[viewType]!!.pop().setViewPagerPositionParam(position)
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} else {
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inflateView(container, viewType)
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}
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bindView(view, position)
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return view
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}
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override fun destroyView(container: ViewGroup, position: Int, view: View) {
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recycleView(view, position)
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val viewType = getViewType(position)
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if (pool[viewType] == null) pool[viewType] = Stack<View>()
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if (recycle) pool[viewType]!!.push(view)
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}
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/**
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* Making sure that this ViewPager child view has the correct "position" layout param
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* after being recycled.
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*/
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private fun View.setViewPagerPositionParam(position: Int): View {
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val params = layoutParams
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if (params is ViewPager.LayoutParams) {
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if (!params.isDecor) {
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try {
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val positionField = ViewPager.LayoutParams::class.java.getDeclaredField("position")
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positionField.isAccessible = true
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positionField.setInt(params, position)
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layoutParams = params
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} catch (e: NoSuchFieldException) {
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} catch (e: IllegalAccessException) {
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}
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}
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}
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return this
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}
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}
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