SystemBarAttributesListener: log appearance as String instead of integer

The appearance flag int is composed by bits. To make it easier to read
logs, convert the flag to a String representation.

Test: adb shell dumpsys and read the output
Bug: 260554575
Change-Id: If0082fe112b64403aff31925e63a06ac7e78d1f7

packages/SystemUI/src/com/android/systemui/statusbar/phone/SystemBarAttributesListener.kt

@@ -16,6 +16,8 @@
 
 package com.android.systemui.statusbar.phone
 
+import android.view.InsetsFlags
+import android.view.ViewDebug
 import android.view.WindowInsets.Type.InsetsType
 import android.view.WindowInsetsController.Appearance
 import android.view.WindowInsetsController.Behavior
@@ -148,4 +150,20 @@ private data class SystemBarAttributesParams(
 ) {
     val letterboxesArray = letterboxes.toTypedArray()
     val appearanceRegionsArray = appearanceRegions.toTypedArray()
+    override fun toString(): String {
+        val appearanceToString =
+                ViewDebug.flagsToString(InsetsFlags::class.java, "appearance", appearance)
+        return """SystemBarAttributesParams(
+            displayId=$displayId,
+            appearance=$appearanceToString,
+            appearanceRegions=$appearanceRegions,
+            navbarColorManagedByIme=$navbarColorManagedByIme,
+            behavior=$behavior,
+            requestedVisibleTypes=$requestedVisibleTypes,
+            packageName='$packageName',
+            letterboxes=$letterboxes,
+            letterboxesArray=${letterboxesArray.contentToString()},
+            appearanceRegionsArray=${appearanceRegionsArray.contentToString()}
+            )""".trimMargin()
+    }
 }