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Commit 6a256466 authored by David Liu's avatar David Liu
Browse files

[Expressive design] create helper class on the device. 

Helper function to check if expressive theme is enabled on the device.

Bug: 366336385
Test: manual
Flag: EXEMPT resource only update
Change-Id: Ib18e1073ae137ab44eb44a042ff939a00e9f71a6
parent 5715cb74

packages/SettingsLib/SettingsTheme/Android.bp

+4 −0
Original line number Diff line number Diff line
@@ -10,6 +10,10 @@ package { 
android_library {

    name: "SettingsLibSettingsTheme",

    use_resource_processor: true,

    srcs: [

        "src/**/*.java",

        "src/**/*.kt",

    ],

    resource_dirs: ["res"],

    static_libs: ["androidx.preference_preference"],

    sdk_version: "system_current",

packages/SettingsLib/SettingsTheme/src/com/android/settingslib/widget/SettingsThemeHelper.kt

0 → 100644
+78 −0
Original line number Diff line number Diff line 
/*

* 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.settingslib.widget



import android.content.Context

import android.os.Build

import android.os.SystemProperties



object SettingsThemeHelper {

    private const val IS_EXPRESSIVE_DESIGN_ENABLED = "is_expressive_design_enabled"

    private var expressiveThemeState: ExpressiveThemeState = ExpressiveThemeState.UNKNOWN



    enum class ExpressiveThemeState {

        UNKNOWN,

        ENABLED,

        DISABLED,

    }



    @JvmStatic

    fun isExpressiveTheme(context: Context): Boolean {

        tryInit(context)

        if (expressiveThemeState == ExpressiveThemeState.UNKNOWN) {

            throw Exception(

                "need to call com.android.settingslib.widget.SettingsThemeHelper.init(Context) first."

            )

        }



        return expressiveThemeState == ExpressiveThemeState.ENABLED

    }



    private fun tryInit(context: Context) {

        if (expressiveThemeState != ExpressiveThemeState.UNKNOWN) {

            return

        }



        expressiveThemeState =

            if (

                (Build.VERSION.SDK_INT >= Build.VERSION_CODES.VANILLA_ICE_CREAM) &&

                    (SystemProperties.getBoolean(IS_EXPRESSIVE_DESIGN_ENABLED, false) ||

                        getPropBoolean(context, IS_EXPRESSIVE_DESIGN_ENABLED, false))

            ) {

                ExpressiveThemeState.ENABLED

            } else {

                ExpressiveThemeState.DISABLED

            }

    }



    private fun getPropBoolean(context: Context, property: String, def: Boolean): Boolean {

        return try {

            val systemProperties = context.classLoader.loadClass("android.os.SystemProperties")



            val paramTypes =

                arrayOf<Class<*>?>(String::class.java, Boolean::class.javaPrimitiveType)

            val getBoolean = systemProperties.getMethod("getBoolean", *paramTypes)



            val params = arrayOf<Any>(property, def)

            getBoolean.invoke(systemProperties, *params) as Boolean

        } catch (iae: IllegalArgumentException) {

            throw iae

        } catch (exception: Exception) {

            def

        }

    }

}