Move RingBuffer to SystemUICommon.

This change adds a new module SystemUICommon and moves RingBuffer to
it. This is to prepare introducing a new logging library which would
depend on it.

Bug: 276475093
Test: RingBuffer does not have existing tests, so just verified
LogBuffer works correctly on device

Change-Id: Ib71fcf8526021be1ac3fe279210c54cb7d4cd0e6

packages/SystemUI/Android.bp

@@ -156,9 +156,10 @@ android_library {
         "WifiTrackerLib",
         "WindowManager-Shell",
         "SystemUIAnimationLib",
+        "SystemUICommon",
+        "SystemUICustomizationLib",
         "SystemUIPluginLib",
         "SystemUISharedLib",
-        "SystemUICustomizationLib",
         "SystemUI-statsd",
         "SettingsLib",
         "androidx.core_core-ktx",

packages/SystemUI/common/.gitignore

@@ -0,0 +1,9 @@
+.idea/
+.gradle/
+gradle/
+build/
+gradlew*
+local.properties
+*.iml
+android.properties
+buildSrc

packages/SystemUI/common/Android.bp

@@ -0,0 +1,39 @@
+// Copyright (C) 2023 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package {
+    // See: http://go/android-license-faq
+    // A large-scale-change added 'default_applicable_licenses' to import
+    // all of the 'license_kinds' from "frameworks_base_packages_SystemUI_license"
+    // to get the below license kinds:
+    //   SPDX-license-identifier-Apache-2.0
+    default_applicable_licenses: ["frameworks_base_packages_SystemUI_license"],
+}
+
+android_library {
+
+    name: "SystemUICommon",
+
+    srcs: [
+        "src/**/*.java",
+        "src/**/*.kt",
+    ],
+
+    static_libs: [
+        "androidx.core_core-ktx",
+    ],
+
+    manifest: "AndroidManifest.xml",
+    kotlincflags: ["-Xjvm-default=all"],
+}

packages/SystemUI/common/AndroidManifest.xml

@@ -0,0 +1,21 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+     Copyright (C) 2023 The Android Open Source Project
+
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+-->
+
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    package="com.android.systemui.common">
+
+</manifest>

packages/SystemUI/common/OWNERS

@@ -0,0 +1,2 @@
+darrellshi@google.com
+evanlaird@google.com

packages/SystemUI/common/README.md

@@ -0,0 +1,5 @@
+# SystemUICommon
+
+`SystemUICommon` is a module within SystemUI that hosts standalone helper libraries. It is intended to be used by other modules, and therefore should not have other SystemUI dependencies to avoid circular dependencies.
+
+To maintain the structure of this module, please refrain from adding components at the top level. Instead, add them to specific sub-packages, such as `systemui/common/buffer/`. This will help to keep the module organized and easy to navigate.

packages/SystemUI/common/src/com/android/systemui/common/buffer/RingBuffer.kt

@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-package com.android.systemui.plugins.util
+package com.android.systemui.common.buffer
 
 import kotlin.math.max
 

packages/SystemUI/plugin/Android.bp

@@ -37,6 +37,7 @@ java_library {
         "error_prone_annotations",
         "PluginCoreLib",
         "SystemUIAnimationLib",
+        "SystemUICommon",
     ],
 
 }

packages/SystemUI/plugin/src/com/android/systemui/plugins/log/LogBuffer.kt

@@ -18,7 +18,7 @@ package com.android.systemui.plugins.log
 
 import android.os.Trace
 import android.util.Log
-import com.android.systemui.plugins.util.RingBuffer
+import com.android.systemui.common.buffer.RingBuffer
 import com.google.errorprone.annotations.CompileTimeConstant
 import java.io.PrintWriter
 import java.util.concurrent.ArrayBlockingQueue

packages/SystemUI/src/com/android/keyguard/KeyguardActiveUnlockModel.kt

@@ -17,9 +17,9 @@
 package com.android.keyguard
 
 import android.annotation.CurrentTimeMillisLong
+import com.android.systemui.common.buffer.RingBuffer
 import com.android.systemui.dump.DumpsysTableLogger
 import com.android.systemui.dump.Row
-import com.android.systemui.plugins.util.RingBuffer
 
 /** Verbose debug information. */
 data class KeyguardActiveUnlockModel(

packages/SystemUI/src/com/android/keyguard/KeyguardFaceListenModel.kt

@@ -17,9 +17,9 @@
 package com.android.keyguard
 
 import android.annotation.CurrentTimeMillisLong
+import com.android.systemui.common.buffer.RingBuffer
 import com.android.systemui.dump.DumpsysTableLogger
 import com.android.systemui.dump.Row
-import com.android.systemui.plugins.util.RingBuffer
 
 /** Verbose debug information associated. */
 data class KeyguardFaceListenModel(

packages/SystemUI/src/com/android/keyguard/KeyguardFingerprintListenModel.kt

@@ -17,9 +17,9 @@
 package com.android.keyguard
 
 import android.annotation.CurrentTimeMillisLong
+import com.android.systemui.common.buffer.RingBuffer
 import com.android.systemui.dump.DumpsysTableLogger
 import com.android.systemui.dump.Row
-import com.android.systemui.plugins.util.RingBuffer
 
 /** Verbose debug information. */
 data class KeyguardFingerprintListenModel(

packages/SystemUI/src/com/android/systemui/log/table/TableLogBuffer.kt

@@ -18,7 +18,7 @@ package com.android.systemui.log.table
 
 import android.os.Trace
 import com.android.systemui.Dumpable
-import com.android.systemui.plugins.util.RingBuffer
+import com.android.systemui.common.buffer.RingBuffer
 import com.android.systemui.util.time.SystemClock
 import java.io.PrintWriter
 import java.text.SimpleDateFormat

packages/SystemUI/src/com/android/systemui/shade/NPVCDownEventState.kt

@@ -14,9 +14,9 @@
 package com.android.systemui.shade
 
 import android.view.MotionEvent
+import com.android.systemui.common.buffer.RingBuffer
 import com.android.systemui.dump.DumpsysTableLogger
 import com.android.systemui.dump.Row
-import com.android.systemui.plugins.util.RingBuffer
 import java.text.SimpleDateFormat
 import java.util.Locale
 

packages/SystemUI/src/com/android/systemui/shade/NotificationShadeWindowState.kt

@@ -16,9 +16,9 @@
 
 package com.android.systemui.shade
 
+import com.android.systemui.common.buffer.RingBuffer
 import com.android.systemui.dump.DumpsysTableLogger
 import com.android.systemui.dump.Row
-import com.android.systemui.plugins.util.RingBuffer
 import com.android.systemui.shade.NotificationShadeWindowState.Buffer
 import com.android.systemui.statusbar.StatusBarState