Edge-to-edge manga details view (#5613)

* Prepare for edge-to-edge MangaController

* Fix derpy liftToScroll with our own implementation

* Edge-to-edge MangaController

Except when legacy blue theme is used.

* Save app bar lift state for controller backstack

* Fix expanded cover position after the view recycled

* Handle overlap changes when incognito mode disabled

* Tablet fixes

* Revert "Handle overlap changes when incognito mode disabled"

This reverts commit 1f492449

Breaks on rotation changes.

* Fix MangaController's swipe refresh position

* All controllers are now doing lift app bar on scroll by default

They are already doing that before so this pretty much just a cleanups.

* TachiyomiCoordinatorLayout: Support ViewPager for app bar lift state check

I'm willing to revert this if this minute detail solution is deemed too hacky xD

* Fix app bar not lifted when scrolled without fling

* Save app bar lift state across configuration changes

* Fix MangaController's swipe refresh position after configuration change

* TachiyomiCoordinatorLayout: Update ViewPager reference when controller is changed

app/src/main/java/eu/kanade/tachiyomi/widget/RecyclerViewPagerAdapter.kt

@@ -2,6 +2,7 @@ package eu.kanade.tachiyomi.widget
 
 import android.view.View
 import android.view.ViewGroup
+import androidx.viewpager.widget.ViewPager
 import com.nightlynexus.viewstatepageradapter.ViewStatePagerAdapter
 import java.util.Stack
 
@@ -22,7 +23,11 @@ abstract class RecyclerViewPagerAdapter : ViewStatePagerAdapter() {
     protected open fun recycleView(view: View, position: Int) {}
 
     override fun createView(container: ViewGroup, position: Int): View {
-        val view = if (pool.isNotEmpty()) pool.pop() else createView(container)
+        val view = if (pool.isNotEmpty()) {
+            pool.pop().setViewPagerPositionParam(position)
+        } else {
+            createView(container)
+        }
         bindView(view, position)
         return view
     }
@@ -31,4 +36,25 @@ abstract class RecyclerViewPagerAdapter : ViewStatePagerAdapter() {
         recycleView(view, position)
         if (recycle) pool.push(view)
     }
+
+    /**
+     * Making sure that this ViewPager child view has the correct "position" layout param
+     * after being recycled.
+     */
+    private fun View.setViewPagerPositionParam(position: Int): View {
+        val params = layoutParams
+        if (params is ViewPager.LayoutParams) {
+            if (!params.isDecor) {
+                try {
+                    val positionField = ViewPager.LayoutParams::class.java.getDeclaredField("position")
+                    positionField.isAccessible = true
+                    positionField.setInt(params, position)
+                    layoutParams = params
+                } catch (e: NoSuchFieldException) {
+                } catch (e: IllegalAccessException) {
+                }
+            }
+        }
+        return this
+    }
 }