Add JS/WASM support to lifecycle-viewmodel

Change-Id: Ied71ef44e96a84e4c3b2962aad97cc314db9984d

lifecycle/lifecycle-viewmodel/build.gradle

@@ -23,22 +23,29 @@
  */
 
 import androidx.build.KmpPlatformsKt
+import androidx.build.KotlinTarget
 import androidx.build.PlatformIdentifier
 import androidx.build.Publish
 import org.jetbrains.kotlin.gradle.dsl.ExplicitApiMode
+import org.jetbrains.kotlin.gradle.plugin.KotlinPlatformType
 import org.jetbrains.kotlin.konan.target.Family
 
 plugins {
     id("AndroidXPlugin")
     id("com.android.library")
 }
 
+def jsEnabled = KmpPlatformsKt.enableJs(project)
+def wasmEnabled = KmpPlatformsKt.enableWasm(project)
+
 androidXMultiplatform {
     android()
     desktop()
     mac()
     linux()
     ios()
+    js()
+    wasm()
 
     kotlin {
         explicitApi = ExplicitApiMode.Strict
@@ -104,6 +111,10 @@ androidXMultiplatform {
         darwinMain.dependsOn(nativeMain)
         linuxMain.dependsOn(nativeMain)
 
+        if (jsEnabled || wasmEnabled) {
+            webMain.dependsOn(nonJvmMain)
+        }
+
         targets.all { target ->
             if (target.platformType == KotlinPlatformType.native) {
                 target.compilations["main"].defaultSourceSet {
@@ -116,6 +127,13 @@ androidXMultiplatform {
                         throw new GradleException("unknown native target ${target}")
                     }
                 }
+            } else if (target.platformType in [
+                    KotlinPlatformType.js,
+                    KotlinPlatformType.wasm
+            ]) {
+                target.compilations["main"].defaultSourceSet {
+                    dependsOn(webMain)
+                }
             }
         }
     }
@@ -131,6 +149,7 @@ android {
 androidx {
     name = "Lifecycle ViewModel"
     publish = Publish.SNAPSHOT_AND_RELEASE
+    kotlinTarget = KotlinTarget.KOTLIN_1_9
     inceptionYear = "2017"
     description = "Android Lifecycle ViewModel"
     metalavaK2UastEnabled = true

lifecycle/lifecycle-viewmodel/src/commonMain/kotlin/androidx/lifecycle/viewmodel/internal/Lock.kt

@@ -23,6 +23,7 @@ package androidx.lifecycle.viewmodel.internal
  * The implementation depends on the platform:
  * - On JVM/ART: uses JDK's synchronization.
  * - On Native: uses posix.
+ * - On JS/WASM: No-op as it's single thread environment.
  */
 internal expect class Lock() {
 

lifecycle/lifecycle-viewmodel/src/webMain/kotlin/androidx/lifecycle/viewmodel/internal/Lock.web.kt

@@ -0,0 +1,21 @@
+/*
+ * Copyright 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 androidx.lifecycle.viewmodel.internal
+
+internal actual class Lock actual constructor() {
+    actual inline fun <T> withLock(crossinline block: () -> T): T = block()
+}

lifecycle/lifecycle-viewmodel/src/webMain/kotlin/androidx/lifecycle/viewmodel/internal/ViewModelProviders.web.kt

@@ -0,0 +1,22 @@
+/*
+ * Copyright 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 androidx.lifecycle.viewmodel.internal
+
+import kotlin.reflect.KClass
+
+internal actual val <T : Any> KClass<T>.canonicalName: String?
+    get() = simpleName // `qualifiedName` reflection API is not supported yet in JavaScript