Updated log screen with new arch

app/src/main/java/com/topjohnwu/magisk/utils/DataBindingAdapters.kt

@@ -6,7 +6,10 @@ import androidx.annotation.DrawableRes
 import androidx.appcompat.widget.AppCompatImageView
 import androidx.appcompat.widget.Toolbar
 import androidx.databinding.BindingAdapter
+import androidx.databinding.InverseBindingAdapter
+import androidx.databinding.InverseBindingListener
 import androidx.drawerlayout.widget.DrawerLayout
+import androidx.viewpager.widget.ViewPager
 import com.google.android.material.navigation.NavigationView
 import com.topjohnwu.magisk.R
 import com.topjohnwu.magisk.model.entity.state.IndeterminateState
@@ -57,3 +60,24 @@ fun setChecked(view: AppCompatImageView, isChecked: IndeterminateState) {
         }
     )
 }
+
+@BindingAdapter("position")
+fun setPosition(view: ViewPager, position: Int) {
+    view.currentItem = position
+}
+
+@InverseBindingAdapter(attribute = "position", event = "positionChanged")
+fun getPosition(view: ViewPager) = view.currentItem
+
+@BindingAdapter("positionChanged")
+fun setPositionChangedListener(view: ViewPager, listener: InverseBindingListener) {
+    view.addOnPageChangeListener(object : ViewPager.OnPageChangeListener {
+        override fun onPageSelected(position: Int) = listener.onChange()
+        override fun onPageScrollStateChanged(state: Int) = listener.onChange()
+        override fun onPageScrolled(
+            position: Int,
+            positionOffset: Float,
+            positionOffsetPixels: Int
+        ) = listener.onChange()
+    })
+}

app/src/main/java/com/topjohnwu/magisk/utils/XRx.kt

@@ -1,5 +1,9 @@
 package com.topjohnwu.magisk.utils
 
 import io.reactivex.Single
+import io.reactivex.functions.BiFunction
 
-fun <T : Any> T.toSingle() = Single.just(this)
+fun <T : Any> T.toSingle() = Single.just(this)
+
+fun <T1, T2, R> zip(t1: Single<T1>, t2: Single<T2>, zipper: (T1, T2) -> R) =
+    Single.zip(t1, t2, BiFunction<T1, T2, R> { rt1, rt2 -> zipper(rt1, rt2) })