Multiplatform Voyager

gradle.properties

@@ -2,6 +2,7 @@ org.gradle.jvmargs=-Xmx4096m -Dfile.encoding=UTF-8
 android.useAndroidX=true
 android.enableJetifier=true
 kotlin.code.style=official
+kotlin.mpp.enableGranularSourceSetsMetadata=true
 
 # Maven
 GROUP=cafe.adriel.voyager

gradle/libs.versions.toml

@@ -2,6 +2,7 @@
 plugin-android = "7.0.3"
 plugin-ktlint = "10.2.0"
 plugin-maven = "0.18.0"
+plugin-multiplatform-compose = "1.0.0"
 
 kotlin = "1.5.31"
 kodein = "7.8.0"
@@ -21,6 +22,7 @@ plugin-kotlin = { module = "org.jetbrains.kotlin:kotlin-gradle-plugin", version.
 plugin-ktlint = { module = "org.jlleitschuh.gradle:ktlint-gradle", version.ref = "plugin-ktlint" }
 plugin-maven = { module = "com.vanniktech:gradle-maven-publish-plugin", version.ref = "plugin-maven" }
 plugin-hilt = { module = "com.google.dagger:hilt-android-gradle-plugin", version.ref = "hilt" }
+plugin-multiplatform-compose = { module = "org.jetbrains.compose:compose-gradle-plugin", version.ref = "plugin-multiplatform-compose" }
 
 leakCanary = { module = "com.squareup.leakcanary:leakcanary-android", version.ref = "leakCanary" }
 kodein = { module = "org.kodein.di:kodein-di-framework-compose", version.ref = "kodein" }
@@ -47,4 +49,4 @@ junit-engine = { module = "org.junit.jupiter:junit-jupiter-engine", version.ref
 junit-api = { module = "org.junit.jupiter:junit-jupiter-api", version.ref = "junit" }
 
 [bundles]
-plugins = ["plugin-android", "plugin-ktlint",  "plugin-maven", "plugin-kotlin", "plugin-hilt"]
+plugins = ["plugin-android", "plugin-ktlint",  "plugin-maven", "plugin-kotlin", "plugin-hilt", "plugin-multiplatform-compose"]

voyager-core/build.gradle.kts

@@ -0,0 +1,61 @@
+plugins {
+    kotlin("multiplatform")
+    id("com.android.library")
+    id("org.jetbrains.compose")
+    id("com.vanniktech.maven.publish")
+}
+
+kotlin {
+    explicitApi()
+
+    android {
+        publishAllLibraryVariants()
+    }
+    jvm("desktop")
+
+    sourceSets {
+        /* Source sets structure
+        common
+          ├─ jvm
+              ├─ android
+              ├─ desktop
+         */
+        val commonMain by getting
+        val jvmMain by creating {
+            dependsOn(commonMain)
+            dependencies {
+                implementation(compose.runtime)
+                implementation(compose.ui)
+            }
+        }
+        val desktopMain by getting {
+            dependsOn(jvmMain)
+        }
+        val androidMain by getting {
+            dependsOn(jvmMain)
+        }
+        val commonTest by getting
+        val jvmTest by creating {
+            dependsOn(commonTest)
+        }
+        val desktopTest by getting {
+            dependsOn(jvmTest)
+        }
+        val androidTest by getting {
+            dependsOn(jvmTest)
+            dependencies {
+                implementation(libs.junit.api)
+                runtimeOnly(libs.junit.engine)
+            }
+        }
+    }
+}
+
+android {
+    compileSdk = 31
+    sourceSets["main"].manifest.srcFile("src/androidMain/AndroidManifest.xml")
+    defaultConfig {
+        minSdk = 21
+        targetSdk = 31
+    }
+}

voyager-navigator/build.gradle.kts

@@ -0,0 +1,61 @@
+plugins {
+    kotlin("multiplatform")
+    id("com.android.library")
+    id("org.jetbrains.compose")
+    id("com.vanniktech.maven.publish")
+}
+
+kotlin {
+    explicitApi()
+
+    android {
+        publishAllLibraryVariants()
+    }
+    jvm("desktop")
+
+    sourceSets {
+        /* Source sets structure
+        common
+          ├─ jvm
+              ├─ android
+              ├─ desktop
+         */
+        val commonMain by getting
+        val jvmMain by creating {
+            dependsOn(commonMain)
+            dependencies {
+                api(projects.voyagerCore)
+                implementation(compose.runtime)
+                implementation(compose.ui)
+            }
+        }
+        val desktopMain by getting {
+            dependsOn(jvmMain)
+        }
+        val androidMain by getting {
+            dependsOn(jvmMain)
+            dependencies {
+                implementation(libs.compose.activity)
+            }
+        }
+        val commonTest by getting
+        val jvmTest by creating {
+            dependsOn(commonTest)
+        }
+        val desktopTest by getting {
+            dependsOn(jvmTest)
+        }
+        val androidTest by getting {
+            dependsOn(jvmTest)
+        }
+    }
+}
+
+android {
+    compileSdk = 31
+    sourceSets["main"].manifest.srcFile("src/androidMain/AndroidManifest.xml")
+    defaultConfig {
+        minSdk = 21
+        targetSdk = 31
+    }
+}

voyager-navigator/src/androidMain/kotlin/cafe/adriel/voyager/navigator/internal/Actuals.kt

@@ -0,0 +1,7 @@
+package cafe.adriel.voyager.navigator.internal
+
+import androidx.activity.compose.BackHandler
+import androidx.compose.runtime.Composable
+
+@Composable
+internal actual fun BackHandler(enabled: Boolean, onBack: () -> Unit) = BackHandler(enabled, onBack)

voyager-navigator/src/desktopMain/kotlin/cafe/adriel/voyager/navigator/internal/Actuals.kt

@@ -0,0 +1,8 @@
+package cafe.adriel.voyager.navigator.internal
+
+import androidx.compose.runtime.Composable
+
+@Composable
+internal actual fun BackHandler(enabled: Boolean, onBack: () -> Unit) {
+    println("Not implemented yet!")
+}

voyager-navigator/src/main/java/cafe/adriel/voyager/navigator/internal/NavigatorBackHandler.kt → voyager-navigator/src/jvmMain/kotlin/cafe/adriel/voyager/navigator/internal/NavigatorBackHandler.kt

@@ -1,10 +1,12 @@
 package cafe.adriel.voyager.navigator.internal
 
-import androidx.activity.compose.BackHandler
 import androidx.compose.runtime.Composable
 import cafe.adriel.voyager.navigator.Navigator
 import cafe.adriel.voyager.navigator.OnBackPressed
 
+@Composable
+internal expect fun BackHandler(enabled: Boolean = true, onBack: () -> Unit)
+
 @Composable
 internal fun NavigatorBackHandler(
     navigator: Navigator,