feat: swipe-controls override volume button behaviour (#285)

src/main/kotlin/app/revanced/extensions/Extensions.kt

@@ -1,8 +1,10 @@
 package app.revanced.extensions
 
+import app.revanced.patcher.data.impl.BytecodeData
 import app.revanced.patcher.data.impl.ResourceData
 import app.revanced.patcher.extensions.addInstructions
 import app.revanced.patcher.patch.PatchResultError
+import app.revanced.patcher.util.proxy.mutableTypes.MutableClass
 import app.revanced.patcher.util.proxy.mutableTypes.MutableMethod
 import app.revanced.patcher.util.smali.toInstruction
 import org.jf.dexlib2.AccessFlags
@@ -27,6 +29,30 @@ internal fun MutableMethodImplementation.injectHideCall(
     )
 }
 
+/**
+ * traverse the class hierarchy starting from the given root class
+ *
+ * @param targetClass the class to start traversing the class hierarchy from
+ * @param callback function that is called for every class in the hierarchy
+ */
+fun BytecodeData.traverseClassHierarchy(targetClass: MutableClass, callback: MutableClass.() -> Unit) {
+    callback(targetClass)
+    this.findClass(targetClass.superclass ?: return)?.resolve()?.let {
+        traverseClassHierarchy(it, callback)
+    }
+}
+
+/**
+ * apply a transform to all methods of the class
+ *
+ * @param transform the transformation function. original method goes in, transformed method goes out
+ */
+fun MutableClass.transformMethods(transform: MutableMethod.() -> MutableMethod) {
+    val transformedMethods = methods.map { it.transform() }
+    methods.clear()
+    methods.addAll(transformedMethods)
+}
+
 /**
  * Insert an event hook at the top of the method. If the hook returns true, the event is consumed and the method will return with true
  *

src/main/kotlin/app/revanced/patches/youtube/interaction/swipecontrols/fingerprints/SwipeControlsHostActivityFingerprint.kt

@@ -0,0 +1,21 @@
+package app.revanced.patches.youtube.interaction.swipecontrols.fingerprints
+
+import app.revanced.patcher.annotation.Name
+import app.revanced.patcher.annotation.Version
+import app.revanced.patcher.fingerprint.method.annotation.DirectPatternScanMethod
+import app.revanced.patcher.fingerprint.method.annotation.MatchingMethod
+import app.revanced.patcher.fingerprint.method.impl.MethodFingerprint
+import app.revanced.patches.youtube.interaction.swipecontrols.annotation.SwipeControlsCompatibility
+
+@Name("swipe-controls-host-activity-fingerprint")
+@MatchingMethod(
+    "Lapp/revanced/integrations/swipecontrols/SwipeControlsHostActivity;", "<init>"
+)
+@DirectPatternScanMethod
+@SwipeControlsCompatibility
+@Version("0.0.1")
+object SwipeControlsHostActivityFingerprint : MethodFingerprint(
+    null, null, null, null, null, { methodDef ->
+        methodDef.definingClass == "Lapp/revanced/integrations/swipecontrols/SwipeControlsHostActivity;" && methodDef.name == "<init>"
+    }
+)

src/main/kotlin/app/revanced/patches/youtube/interaction/swipecontrols/fingerprints/WatchWhileActivityFingerprint.kt

@@ -7,15 +7,15 @@ import app.revanced.patcher.fingerprint.method.annotation.MatchingMethod
 import app.revanced.patcher.fingerprint.method.impl.MethodFingerprint
 import app.revanced.patches.youtube.interaction.swipecontrols.annotation.SwipeControlsCompatibility
 
-@Name("watch-while-onStart-fingerprint")
+@Name("watch-while-activity-fingerprint")
 @MatchingMethod(
-    "LWatchWhileActivity;", "onCreate"
+    "LWatchWhileActivity;", "<init>"
 )
 @DirectPatternScanMethod
 @SwipeControlsCompatibility
 @Version("0.0.1")
-object WatchWhileOnStartFingerprint : MethodFingerprint(
+object WatchWhileActivityFingerprint : MethodFingerprint(
     null, null, null, null, null, { methodDef ->
-        methodDef.definingClass.endsWith("WatchWhileActivity;") && methodDef.name == "onStart"
+        methodDef.definingClass.endsWith("WatchWhileActivity;") && methodDef.name == "<init>"
     }
-)
+)

src/main/kotlin/app/revanced/patches/youtube/interaction/swipecontrols/patch/bytecode/SwipeControlsBytecodePatch.kt

@@ -1,45 +1,69 @@
 package app.revanced.patches.youtube.interaction.swipecontrols.patch.bytecode
 
+import app.revanced.extensions.transformMethods
+import app.revanced.extensions.traverseClassHierarchy
 import app.revanced.patcher.annotation.Description
 import app.revanced.patcher.annotation.Name
 import app.revanced.patcher.annotation.Version
 import app.revanced.patcher.data.impl.BytecodeData
-import app.revanced.patcher.extensions.addInstruction
 import app.revanced.patcher.patch.PatchResult
 import app.revanced.patcher.patch.PatchResultSuccess
 import app.revanced.patcher.patch.annotations.DependsOn
 import app.revanced.patcher.patch.annotations.Patch
 import app.revanced.patcher.patch.impl.BytecodePatch
+import app.revanced.patcher.util.proxy.mutableTypes.MutableMethod.Companion.toMutable
 import app.revanced.patches.youtube.interaction.swipecontrols.annotation.SwipeControlsCompatibility
-import app.revanced.patches.youtube.interaction.swipecontrols.fingerprints.WatchWhileOnStartFingerprint
+import app.revanced.patches.youtube.interaction.swipecontrols.fingerprints.SwipeControlsHostActivityFingerprint
+import app.revanced.patches.youtube.interaction.swipecontrols.fingerprints.WatchWhileActivityFingerprint
 import app.revanced.patches.youtube.interaction.swipecontrols.patch.resource.SwipeControlsResourcePatch
 import app.revanced.patches.youtube.misc.integrations.patch.IntegrationsPatch
-import app.revanced.patches.youtube.misc.playeroverlay.patch.PlayerOverlaysHookPatch
 import app.revanced.patches.youtube.misc.playertype.patch.PlayerTypeHookPatch
+import org.jf.dexlib2.AccessFlags
+import org.jf.dexlib2.immutable.ImmutableMethod
 
 @Patch
 @Name("swipe-controls")
 @Description("Adds volume and brightness swipe controls.")
 @SwipeControlsCompatibility
-@Version("0.0.2")
+@Version("0.0.3")
 @DependsOn(
     [
         IntegrationsPatch::class,
         PlayerTypeHookPatch::class,
-        PlayerOverlaysHookPatch::class,
         SwipeControlsResourcePatch::class
     ]
 )
 class SwipeControlsBytecodePatch : BytecodePatch(
     listOf(
-        WatchWhileOnStartFingerprint
+        WatchWhileActivityFingerprint,
+        SwipeControlsHostActivityFingerprint
     )
 ) {
     override fun execute(data: BytecodeData): PatchResult {
-        WatchWhileOnStartFingerprint.result!!.mutableMethod.addInstruction(
-            0,
-            "invoke-static { p0 }, Lapp/revanced/integrations/patches/SwipeControlsPatch;->WatchWhileActivity_onStartHookEX(Ljava/lang/Object;)V"
-        )
+        val wrapperClass = SwipeControlsHostActivityFingerprint.result!!.mutableClass
+        val targetClass = WatchWhileActivityFingerprint.result!!.mutableClass
+
+        // inject the wrapper class from integrations into the class hierarchy of WatchWhileActivity
+        wrapperClass.setSuperClass(targetClass.superclass)
+        targetClass.setSuperClass(wrapperClass.type)
+
+        // ensure all classes and methods in the hierarchy are non-final, so we can override them in integrations
+        data.traverseClassHierarchy(targetClass) {
+            accessFlags = accessFlags and AccessFlags.FINAL.value.inv()
+            transformMethods {
+                ImmutableMethod(
+                    definingClass,
+                    name,
+                    parameters,
+                    returnType,
+                    accessFlags and AccessFlags.FINAL.value.inv(),
+                    annotations,
+                    hiddenApiRestrictions,
+                    implementation
+                ).toMutable()
+            }
+        }
         return PatchResultSuccess()
     }
-}
+}
+