Rename ACONFIG flag and add flag wrapper

Rename enable_keyguard_compose to compose_lockscreen.
Also add a flag wrapper which enables flag dependencies.

Test: Ensure that code compiles. Try different flag combinations.
Bug: 301968149
Flag: ACONFIG com.android.systemui.compose_lockscreen DEVELOPMENT

Change-Id: I18aeb62f5e16bd4b656179fe91e8e370c1d1232d

3 files changed, 66 insertions, 2 deletions

diff --git a/packages/SystemUI/aconfig/systemui.aconfig b/packages/SystemUI/aconfig/systemui.aconfig
index 3db99f284e4c..0b244426b69e 100644
--- a/packages/SystemUI/aconfig/systemui.aconfig
+++ b/packages/SystemUI/aconfig/systemui.aconfig
@@ -365,9 +365,9 @@ flag {
 }
 
 flag {
-   name: "enable_keyguard_compose"
+   name: "compose_lockscreen"
    namespace: "systemui"
-   description: "Enables the compose version of keyguard."
+   description: "Enables the compose version of lockscreen that runs standalone, outside of Flexiglass."
    bug: "301968149"
 }
 
diff --git a/packages/SystemUI/src/com/android/systemui/flags/FlagDependencies.kt b/packages/SystemUI/src/com/android/systemui/flags/FlagDependencies.kt
index df0566e246a8..41ce3fd11e8a 100644
--- a/packages/SystemUI/src/com/android/systemui/flags/FlagDependencies.kt
+++ b/packages/SystemUI/src/com/android/systemui/flags/FlagDependencies.kt
@@ -23,9 +23,12 @@ import com.android.server.notification.Flags.crossAppPoliteNotifications
 import com.android.server.notification.Flags.politeNotifications
 import com.android.server.notification.Flags.vibrateWhileUnlocked
 import com.android.systemui.Flags.FLAG_KEYGUARD_BOTTOM_AREA_REFACTOR
+import com.android.systemui.Flags.FLAG_MIGRATE_CLOCKS_TO_BLUEPRINT
 import com.android.systemui.Flags.keyguardBottomAreaRefactor
+import com.android.systemui.Flags.migrateClocksToBlueprint
 import com.android.systemui.dagger.SysUISingleton
 import com.android.systemui.flags.Flags.MIGRATE_KEYGUARD_STATUS_BAR_VIEW
+import com.android.systemui.keyguard.shared.ComposeLockscreen
 import com.android.systemui.keyguard.shared.KeyguardShadeMigrationNssl
 import com.android.systemui.scene.shared.flag.SceneContainerFlag
 import com.android.systemui.statusbar.notification.footer.shared.FooterViewRefactor
@@ -55,6 +58,11 @@ class FlagDependencies @Inject constructor(featureFlags: FeatureFlagsClassic, ha
         // SceneContainer dependencies
         SceneContainerFlag.getFlagDependencies().forEach { (alpha, beta) -> alpha dependsOn beta }
         SceneContainerFlag.getMainStaticFlag() dependsOn MIGRATE_KEYGUARD_STATUS_BAR_VIEW
+
+        // ComposeLockscreen dependencies
+        ComposeLockscreen.token dependsOn KeyguardShadeMigrationNssl.token
+        ComposeLockscreen.token dependsOn keyguardBottomAreaRefactor
+        ComposeLockscreen.token dependsOn migrateClocksToBlueprint
     }
 
     private inline val politeNotifications
@@ -65,4 +73,6 @@ class FlagDependencies @Inject constructor(featureFlags: FeatureFlagsClassic, ha
         get() = FlagToken(FLAG_VIBRATE_WHILE_UNLOCKED, vibrateWhileUnlocked())
     private inline val keyguardBottomAreaRefactor
         get() = FlagToken(FLAG_KEYGUARD_BOTTOM_AREA_REFACTOR, keyguardBottomAreaRefactor())
+    private inline val migrateClocksToBlueprint
+        get() = FlagToken(FLAG_MIGRATE_CLOCKS_TO_BLUEPRINT, migrateClocksToBlueprint())
 }
diff --git a/packages/SystemUI/src/com/android/systemui/keyguard/shared/ComposeLockscreen.kt b/packages/SystemUI/src/com/android/systemui/keyguard/shared/ComposeLockscreen.kt
new file mode 100644
index 000000000000..7f0b483919b3
--- /dev/null
+++ b/packages/SystemUI/src/com/android/systemui/keyguard/shared/ComposeLockscreen.kt
@@ -0,0 +1,54 @@
+/*
+ * Copyright (C) 2024 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 com.android.systemui.keyguard.shared
+
+import com.android.systemui.Flags
+import com.android.systemui.compose.ComposeFacade
+import com.android.systemui.flags.FlagToken
+import com.android.systemui.flags.RefactorFlagUtils
+
+/** Helper for reading or using the compose lockscreen flag state. */
+@Suppress("NOTHING_TO_INLINE")
+object ComposeLockscreen {
+    /** The aconfig flag name */
+    const val FLAG_NAME = Flags.FLAG_COMPOSE_LOCKSCREEN
+
+    /** A token used for dependency declaration */
+    val token: FlagToken
+        get() = FlagToken(FLAG_NAME, isEnabled)
+
+    /** Is the refactor enabled */
+    @JvmStatic
+    inline val isEnabled
+        get() = Flags.composeLockscreen() && ComposeFacade.isComposeAvailable()
+
+    /**
+     * Called to ensure code is only run when the flag is enabled. This protects users from the
+     * unintended behaviors caused by accidentally running new logic, while also crashing on an eng
+     * build to ensure that the refactor author catches issues in testing.
+     */
+    @JvmStatic
+    inline fun isUnexpectedlyInLegacyMode() =
+        RefactorFlagUtils.isUnexpectedlyInLegacyMode(isEnabled, FLAG_NAME)
+
+    /**
+     * Called to ensure code is only run when the flag is disabled. This will throw an exception if
+     * the flag is enabled to ensure that the refactor author catches issues in testing.
+     */
+    @JvmStatic
+    inline fun assertInLegacyMode() = RefactorFlagUtils.assertInLegacyMode(isEnabled, FLAG_NAME)
+}