fix(YouTube - Hide Shorts components): Correctly hide Shorts if navigation tab is changed using device back button (#3007)

Author: LisoUseInAIKyrios

src/main/kotlin/app/revanced/patches/youtube/misc/navigation/NavigationBarHookPatch.kt

@@ -36,7 +36,9 @@ object NavigationBarHookPatch : BytecodePatch(
         NavigationEnumFingerprint,
         PivotBarButtonsCreateDrawableViewFingerprint,
         PivotBarButtonsCreateResourceViewFingerprint,
+        PivotBarButtonsViewSetSelectedFingerprint,
         NavigationBarHookCallbackFingerprint,
+        MainActivityOnBackPressedFingerprint,
         ActionBarSearchResultsFingerprint,
     ),
 ) {
@@ -90,6 +92,29 @@ object NavigationBarHookPatch : BytecodePatch(
             }
         }
 
+        PivotBarButtonsViewSetSelectedFingerprint.resultOrThrow().mutableMethod.apply {
+            val index = PivotBarButtonsViewSetSelectedFingerprint.indexOfSetViewSelectedInstruction(this)
+            val instruction = getInstruction<FiveRegisterInstruction>(index)
+            val viewRegister = instruction.registerC
+            val isSelectedRegister = instruction.registerD
+
+            addInstruction(
+                index + 1,
+                "invoke-static { v$viewRegister, v$isSelectedRegister }, " +
+                        "$INTEGRATIONS_CLASS_DESCRIPTOR->navigationTabSelected(Landroid/view/View;Z)V",
+            )
+        }
+
+        // Hook onto back button pressed.  Needed to fix race problem with
+        // litho filtering based on navigation tab before the tab is updated.
+        MainActivityOnBackPressedFingerprint.resultOrThrow().mutableMethod.apply {
+            addInstruction(
+                0,
+                "invoke-static { p0 }, " +
+                        "$INTEGRATIONS_CLASS_DESCRIPTOR->onBackPressed(Landroid/app/Activity;)V",
+            )
+        }
+
         // Hook the search bar.
 
         // Two different layouts are used at the hooked code.

src/main/kotlin/app/revanced/patches/youtube/misc/navigation/fingerprints/MainActivityOnBackPressedFingerprint.kt

@@ -0,0 +1,17 @@
+package app.revanced.patches.youtube.misc.navigation.fingerprints
+
+import app.revanced.patcher.extensions.or
+import app.revanced.patcher.fingerprint.MethodFingerprint
+import com.android.tools.smali.dexlib2.AccessFlags
+
+internal object MainActivityOnBackPressedFingerprint : MethodFingerprint(
+    accessFlags = AccessFlags.PUBLIC or AccessFlags.FINAL,
+    returnType = "V",
+    parameters = listOf(),
+    customFingerprint = { methodDef, _ ->
+        (methodDef.definingClass.endsWith("MainActivity;") ||
+                // Old versions of YouTube called this class "WatchWhileActivity" instead.
+                methodDef.definingClass.endsWith("WatchWhileActivity;"))
+                && methodDef.name == "onBackPressed"
+    }
+)

src/main/kotlin/app/revanced/patches/youtube/misc/navigation/fingerprints/PivotBarButtonsViewSetSelectedFingerprint.kt

@@ -0,0 +1,27 @@
+package app.revanced.patches.youtube.misc.navigation.fingerprints
+
+import app.revanced.patcher.extensions.or
+import app.revanced.patcher.fingerprint.MethodFingerprint
+import app.revanced.patches.youtube.misc.navigation.fingerprints.PivotBarButtonsViewSetSelectedFingerprint.indexOfSetViewSelectedInstruction
+import app.revanced.util.getReference
+import app.revanced.util.indexOfFirstInstruction
+import com.android.tools.smali.dexlib2.AccessFlags
+import com.android.tools.smali.dexlib2.Opcode
+import com.android.tools.smali.dexlib2.iface.Method
+import com.android.tools.smali.dexlib2.iface.reference.MethodReference
+
+internal object PivotBarButtonsViewSetSelectedFingerprint : MethodFingerprint(
+    accessFlags = AccessFlags.PUBLIC or AccessFlags.FINAL,
+    parameters = listOf("I", "Z"),
+    returnType = "V",
+    customFingerprint = { methodDef, classDef ->
+        classDef.type == "Lcom/google/android/libraries/youtube/rendering/ui/pivotbar/PivotBar;" &&
+                indexOfSetViewSelectedInstruction(methodDef) >= 0
+    }
+) {
+   fun indexOfSetViewSelectedInstruction(methodDef: Method) =
+        methodDef.indexOfFirstInstruction {
+            opcode == Opcode.INVOKE_VIRTUAL && getReference<MethodReference>()?.name == "setSelected"
+        }
+}
+