feat(kakaotalk): add methods to handle deleted and hidden message layouts in ChatInfoView

This is the fifth commit to make deleted, hidden messages visible.

patches/src/main/kotlin/app/revanced/patches/kakaotalk/chatlog/AddDeletedOrHiddenLayoutPatch.kt

@@ -6,14 +6,18 @@ import app.revanced.patcher.extensions.InstructionExtensions.getInstruction
 import app.revanced.patcher.extensions.InstructionExtensions.instructions
 import app.revanced.patcher.patch.bytecodePatch
 import app.revanced.patcher.util.proxy.mutableTypes.MutableField.Companion.toMutable
+import app.revanced.patcher.util.proxy.mutableTypes.MutableMethod.Companion.toMutable
 import app.revanced.patcher.util.smali.ExternalLabel
-import app.revanced.util.getReference
+import app.revanced.patches.kakaotalk.chatlog.fingerprints.chatInfoViewConstructorFingerprint
 import com.android.tools.smali.dexlib2.AccessFlags
 import com.android.tools.smali.dexlib2.Opcode
-import com.android.tools.smali.dexlib2.builder.instruction.BuilderInstruction35c
+import com.android.tools.smali.dexlib2.builder.MutableMethodImplementation
-import com.android.tools.smali.dexlib2.iface.reference.FieldReference
 import com.android.tools.smali.dexlib2.immutable.ImmutableField
+import com.android.tools.smali.dexlib2.immutable.ImmutableMethod
+import com.android.tools.smali.dexlib2.immutable.ImmutableMethodImplementation
+import com.android.tools.smali.dexlib2.immutable.ImmutableMethodParameter
 import com.android.tools.smali.dexlib2.immutable.value.ImmutableBooleanEncodedValue
+import com.google.common.collect.ImmutableList
 
 val addDeletedOrHiddenLayoutPatch = bytecodePatch(
     name = "Add deleted or hidden layout",
@@ -31,9 +35,12 @@ val addDeletedOrHiddenLayoutPatch = bytecodePatch(
         val onDrawMethod = chatInfoViewClass.methods.firstOrNull {
             it.name == "onDraw"
         } ?: error("onDraw method not found in ChatInfoView class")
+        val constructor = chatInfoViewConstructorFingerprint.method
 
         println("ChatInfoView class: $chatInfoViewClass")
         println("makeLayout method: $makeLayoutMethod")
+        println("onDraw method: $onDrawMethod")
+        println("constructor: $constructor")
 
         chatInfoViewClass.apply {
             fields.add(
@@ -180,6 +187,64 @@ val addDeletedOrHiddenLayoutPatch = bytecodePatch(
                 ).toMutable()
             )
 
+            methods.add(
+                ImmutableMethod(
+                    type,
+                    "setDeleted",
+                    ImmutableList.of(
+                        ImmutableMethodParameter(
+                            "Z",
+                            null,
+                            null
+                        )
+                    ),
+                    "V",
+                    AccessFlags.PUBLIC.value or AccessFlags.FINAL.value,
+                    null,
+                    null,
+                    MutableMethodImplementation(2)
+                ).toMutable().apply {
+                    addInstructions(
+                        0,
+                        """
+                            iput-boolean p1, p0, Lcom/kakao/talk/widget/chatlog/ChatInfoView;->isDeleted:Z
+                            invoke-virtual {p0}, Landroid/view/View;->requestLayout()V
+                            invoke-virtual {p0}, Landroid/view/View;->invalidate()V
+                            return-void
+                        """.trimIndent()
+                    )
+                },
+            )
+
+            methods.add(
+                ImmutableMethod(
+                    type,
+                    "setHidden",
+                    ImmutableList.of(
+                        ImmutableMethodParameter(
+                            "Z",
+                            null,
+                            null
+                        )
+                    ),
+                    "V",
+                    AccessFlags.PUBLIC.value or AccessFlags.FINAL.value,
+                    null,
+                    null,
+                    MutableMethodImplementation(2)
+                ).toMutable().apply {
+                    addInstructions(
+                        0,
+                        """
+                            iput-boolean p1, p0, Lcom/kakao/talk/widget/chatlog/ChatInfoView;->isHidden:Z
+                            invoke-virtual {p0}, Landroid/view/View;->requestLayout()V
+                            invoke-virtual {p0}, Landroid/view/View;->invalidate()V
+                            return-void
+                        """.trimIndent()
+                    )
+                },
+            )
+
             val cls = chatInfoViewClass.type
 
             val deletedMakeLayoutBlock = """
@@ -335,6 +400,39 @@ val addDeletedOrHiddenLayoutPatch = bytecodePatch(
                 deletedOnDrawBlock,
                 skipDeletedLabel
             )
+
+            val indices = constructor.instructions
+                .withIndex()
+                .filter { it.value.opcode == Opcode.MOVE_RESULT_OBJECT }
+                .map { it.index }
+
+            val secondIndex = indices.getOrNull(1) ?: error("Second MOVE_RESULT_OBJECT instruction not found in constructor")
+
+            constructor.addInstructions(
+                secondIndex + 1,
+                """
+                const/4 v0, 0x1
+                    
+                new-instance p3, Landroid/text/TextPaint;
+                invoke-direct {p3, v0}, Landroid/text/TextPaint;-><init>(I)V
+                iget v1, p0, $cls->deletedTextSize:I
+                int-to-float v1, v1
+                invoke-virtual {p3, v1}, Landroid/graphics/Paint;->setTextSize(F)V
+                iget v1, p0, $cls->deletedTextColor:I
+                invoke-virtual {p3, v1}, Landroid/graphics/Paint;->setColor(I)V
+                invoke-virtual {p3, p2}, Landroid/graphics/Paint;->setTypeface(Landroid/graphics/Typeface;)Landroid/graphics/Typeface;
+                iput-object p3, p0, $cls->deletedPaint:Landroid/text/TextPaint;
+                
+                new-instance p3, Landroid/text/TextPaint;
+                invoke-direct {p3, v0}, Landroid/text/TextPaint;-><init>(I)V
+                iget v1, p0, $cls->hiddenTextSize:I
+                int-to-float v1, v1
+                invoke-virtual {p3, v1}, Landroid/graphics/Paint;->setTextSize(F)V
+                iget v1, p0, $cls->hiddenTextColor:I
+                invoke-virtual {p3, v1}, Landroid/graphics/Paint;->setColor(I)V
+                invoke-virtual {p3, p2}, Landroid/graphics/Paint;->setTypeface(Landroid/graphics/Typeface;)Landroid/graphics/Typeface;
+                iput-object p3, p0, $cls->hiddenPaint:Landroid/text/TextPaint;
+            """.trimIndent())
         }
     }
 }

patches/src/main/kotlin/app/revanced/patches/kakaotalk/chatlog/fingerprints/ChatInfoViewFingerprint.kt

@@ -1,2 +1,14 @@
 package app.revanced.patches.kakaotalk.chatlog.fingerprints
 
+import app.revanced.patcher.fingerprint
+import com.android.tools.smali.dexlib2.AccessFlags
+
+internal val chatInfoViewConstructorFingerprint = fingerprint {
+    accessFlags(AccessFlags.PUBLIC, AccessFlags.CONSTRUCTOR)
+    returns("V")
+    parameters("Landroid/content/Context;", "Landroid/util/AttributeSet;", "I")
+    strings(
+        "context"
+    )
+    custom { method, classDef -> classDef.type == "Lcom/kakao/talk/widget/chatlog/ChatInfoView;" && method.name == "<init>" }
+}