Introduce SlotTableInspector tool for Compose.

sample-compose/build.gradle.kts

@@ -55,6 +55,7 @@ tasks.withType<KotlinCompile> {
 
 dependencies {
   implementation(project(":radiography"))
+  implementation(project(":slot-table-inspector"))
   implementation(Dependencies.AppCompat)
   implementation(Dependencies.Compose(sampleComposeVersion).Activity())
   implementation(Dependencies.Compose(sampleComposeVersion).Material)

sample-compose/src/main/java/com/squareup/radiography/sample/compose/ComposeSampleApp.kt

@@ -20,6 +20,7 @@ import androidx.compose.foundation.rememberScrollState
 import androidx.compose.foundation.verticalScroll
 import androidx.compose.material.Checkbox
 import androidx.compose.material.MaterialTheme
+import androidx.compose.material.Surface
 import androidx.compose.material.Text
 import androidx.compose.material.TextButton
 import androidx.compose.material.TextField
@@ -31,15 +32,19 @@ import androidx.compose.runtime.mutableStateOf
 import androidx.compose.runtime.remember
 import androidx.compose.runtime.setValue
 import androidx.compose.ui.Alignment
+import androidx.compose.ui.ExperimentalComposeUiApi
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.platform.LocalContext
 import androidx.compose.ui.platform.testTag
 import androidx.compose.ui.text.font.FontFamily
 import androidx.compose.ui.text.input.PasswordVisualTransformation
+import androidx.compose.ui.text.style.TextAlign
 import androidx.compose.ui.tooling.preview.Preview
 import androidx.compose.ui.unit.dp
 import androidx.compose.ui.unit.sp
 import androidx.compose.ui.viewinterop.AndroidView
+import androidx.compose.ui.window.Dialog
+import androidx.compose.ui.window.DialogProperties
 import radiography.ExperimentalRadiographyComposeApi
 import radiography.Radiography
 import radiography.ScanScopes.FocusedWindowScope
@@ -50,6 +55,9 @@ import radiography.ViewStateRenderers.DefaultsNoPii
 import radiography.ViewStateRenderers.ViewRenderer
 import radiography.ViewStateRenderers.androidViewStateRendererFor
 import radiography.ViewStateRenderers.textViewRenderer
+import radiography.compose.slottable.SlotTableInspectable
+import radiography.compose.slottable.SlotTableInspector
+import radiography.compose.slottable.SlotTableInspectorState
 
 internal const val TEXT_FIELD_TEST_TAG = "text-field"
 internal const val LIVE_HIERARCHY_TEST_TAG = "live-hierarchy"
@@ -59,84 +67,115 @@ internal const val LIVE_HIERARCHY_TEST_TAG = "live-hierarchy"
   ComposeSampleApp()
 }
 
-@OptIn(ExperimentalRadiographyComposeApi::class, ExperimentalAnimationApi::class)
+@OptIn(
+  ExperimentalRadiographyComposeApi::class,
+  ExperimentalAnimationApi::class,
+  ExperimentalComposeUiApi::class,
+)
 @Composable fun ComposeSampleApp() {
   val context = LocalContext.current
   val liveHierarchy = remember { mutableStateOf<String?>(null) }
+  val slotTableInspectorState = remember { SlotTableInspectorState() }
+  var showSlotTableInspector by remember { mutableStateOf(false) }
 
   var username by remember { mutableStateOf("") }
   var password by remember { mutableStateOf("") }
   var rememberMe by remember { mutableStateOf(false) }
 
-  MaterialTheme {
-    Column(
-      modifier = Modifier.padding(16.dp),
-      horizontalAlignment = Alignment.CenterHorizontally,
-      verticalArrangement = Arrangement.spacedBy(16.dp)
-    ) {
-      RadiographyLogo(Modifier.height(128.dp))
+  SlotTableInspectable(slotTableInspectorState) {
+    MaterialTheme {
+      Column(
+        modifier = Modifier.padding(16.dp),
+        horizontalAlignment = Alignment.CenterHorizontally,
+        verticalArrangement = Arrangement.spacedBy(16.dp)
+      ) {
+        RadiographyLogo(Modifier.height(128.dp))
 
-      TextField(
-        value = username,
-        onValueChange = { username = it },
-        label = { Text("Username") },
-        colors = TextFieldDefaults.outlinedTextFieldColors(),
-        modifier = Modifier.testTag(TEXT_FIELD_TEST_TAG)
-      )
-      TextField(
-        value = password,
-        onValueChange = { password = it },
-        label = { Text("Password") },
-        colors = TextFieldDefaults.outlinedTextFieldColors(),
-        visualTransformation = PasswordVisualTransformation()
-      )
-      Row(verticalAlignment = Alignment.CenterVertically) {
-        Checkbox(checked = rememberMe, onCheckedChange = { rememberMe = it })
-        Spacer(Modifier.width(8.dp))
-        Text("Remember me")
-      }
-
-      Row(horizontalArrangement = Arrangement.spacedBy(16.dp)) {
-        TextButton(onClick = {}) {
-          Text("SIGN IN")
+        TextField(
+          value = username,
+          onValueChange = { username = it },
+          label = { Text("Username") },
+          colors = TextFieldDefaults.outlinedTextFieldColors(),
+          modifier = Modifier.testTag(TEXT_FIELD_TEST_TAG)
+        )
+        TextField(
+          value = password,
+          onValueChange = { password = it },
+          label = { Text("Password") },
+          colors = TextFieldDefaults.outlinedTextFieldColors(),
+          visualTransformation = PasswordVisualTransformation()
+        )
+        Row(verticalAlignment = Alignment.CenterVertically) {
+          Checkbox(checked = rememberMe, onCheckedChange = { rememberMe = it })
+          Spacer(Modifier.width(8.dp))
+          Text("Remember me")
         }
-        TextButton(onClick = {}) {
-          Text("FORGOT PASSWORD")
+
+        Row(horizontalArrangement = Arrangement.spacedBy(16.dp)) {
+          TextButton(onClick = {}) {
+            Text("SIGN IN")
+          }
+          TextButton(onClick = {}) {
+            Text("FORGOT PASSWORD")
+          }
         }
-      }
 
-      // Include a classic Android view in the composition.
-      AndroidView(::TextView) {
-        @SuppressLint("SetTextI18n")
-        it.text = "By signing in, you agree to our Terms and Conditions."
-      }
+        // Include a classic Android view in the composition.
+        AndroidView(::TextView) {
+          @SuppressLint("SetTextI18n")
+          it.text = "By signing in, you agree to our Terms and Conditions."
+        }
 
-      liveHierarchy.value?.let {
-        Row(
-          modifier = Modifier
-            .horizontalScroll(rememberScrollState())
-            .weight(1f)
-        ) {
-          Column(Modifier.verticalScroll(rememberScrollState())) {
-            Text(
-              liveHierarchy.value.orEmpty(),
-              fontFamily = FontFamily.Monospace,
-              fontSize = 6.sp,
-              modifier = Modifier.testTag(LIVE_HIERARCHY_TEST_TAG)
-            )
+        liveHierarchy.value?.let {
+          Row(
+            modifier = Modifier
+              .horizontalScroll(rememberScrollState())
+              .weight(1f)
+          ) {
+            Column(Modifier.verticalScroll(rememberScrollState())) {
+              Text(
+                liveHierarchy.value.orEmpty(),
+                fontFamily = FontFamily.Monospace,
+                fontSize = 6.sp,
+                modifier = Modifier.testTag(LIVE_HIERARCHY_TEST_TAG)
+              )
+            }
+          }
+        }
+        Row {
+          TextButton(
+            modifier = Modifier.weight(1f),
+            onClick = { showSelectionDialog(context) }
+          ) {
+            Text("SHOW STRING RENDERING DIALOG", textAlign = TextAlign.Center)
+          }
+          TextButton(
+            modifier = Modifier.weight(1f),
+            onClick = {
+              slotTableInspectorState.captureSlotTables()
+              showSlotTableInspector = true
+            }) {
+            Text("SHOW SLOT TABLE INSPECTOR", textAlign = TextAlign.Center)
           }
         }
-      }
-      TextButton(onClick = { showSelectionDialog(context) }) {
-        Text("SHOW STRING RENDERING DIALOG")
-      }
 
-      SideEffect {
-        liveHierarchy.value = Radiography.scan(
-          viewStateRenderers = DefaultsIncludingPii,
-          // Don't trigger infinite recursion.
-          viewFilter = skipComposeTestTagsFilter(LIVE_HIERARCHY_TEST_TAG)
-        )
+        SideEffect {
+          liveHierarchy.value = Radiography.scan(
+            viewStateRenderers = DefaultsIncludingPii,
+            // Don't trigger infinite recursion.
+            viewFilter = skipComposeTestTagsFilter(LIVE_HIERARCHY_TEST_TAG)
+          )
+        }
+        if (showSlotTableInspector) {
+          Dialog(
+            onDismissRequest = { showSlotTableInspector = false },
+            properties = DialogProperties(usePlatformDefaultWidth = false)
+          ) {
+            Surface {
+              SlotTableInspector(slotTableInspectorState)
+            }
+          }
+        }
       }
     }
   }

settings.gradle.kts

@@ -20,5 +20,6 @@ include(
   ":compose-unsupported-tests",
   ":radiography",
   ":sample",
-  ":sample-compose"
+  ":sample-compose",
+  ":slot-table-inspector",
 )

slot-table-inspector/api/slot-table-inspector.api

@@ -0,0 +1,11 @@
+public final class radiography/compose/slottable/SlotTableInspectorKt {
+	public static final fun SlotTableInspectable (Lradiography/compose/slottable/SlotTableInspectorState;Landroidx/compose/ui/Modifier;Lkotlin/jvm/functions/Function2;Landroidx/compose/runtime/Composer;II)V
+	public static final fun SlotTableInspector (Lradiography/compose/slottable/SlotTableInspectorState;Landroidx/compose/ui/Modifier;Landroidx/compose/runtime/Composer;II)V
+}
+
+public final class radiography/compose/slottable/SlotTableInspectorState {
+	public static final field $stable I
+	public fun <init> ()V
+	public final fun captureSlotTables ()V
+}
+

slot-table-inspector/build.gradle.kts

@@ -0,0 +1,71 @@
+import org.jetbrains.kotlin.gradle.tasks.KotlinCompile
+
+plugins {
+  id("com.android.library")
+  kotlin("android")
+  id("com.vanniktech.maven.publish")
+}
+
+android {
+  compileSdk = 30
+
+  compileOptions {
+    sourceCompatibility = JavaVersion.VERSION_1_8
+    targetCompatibility = JavaVersion.VERSION_1_8
+  }
+
+  defaultConfig {
+    // Compose minSdk is also 21.
+    minSdk = 21
+    targetSdk = 30
+    testInstrumentationRunner = "androidx.test.runner.AndroidJUnitRunner"
+  }
+
+  buildFeatures {
+    buildConfig = false
+    compose = true
+  }
+
+  composeOptions {
+    kotlinCompilerExtensionVersion = Versions.Compose
+  }
+
+  testOptions {
+    execution = "ANDROIDX_TEST_ORCHESTRATOR"
+  }
+}
+
+tasks.withType<KotlinCompile> {
+  kotlinOptions {
+    freeCompilerArgs += listOfNotNull(
+      "-Xopt-in=kotlin.RequiresOptIn",
+
+      // Require explicit public modifiers and types.
+      // TODO this should be moved to a top-level `kotlin { explicitApi() }` once that's working
+      //  for android projects, see https://youtrack.jetbrains.com/issue/KT-37652.
+      "-Xexplicit-api=strict".takeUnless {
+        // Tests aren't part of the public API, don't turn explicit API mode on for them.
+        name.contains("test", ignoreCase = true)
+      }
+    )
+  }
+}
+
+dependencies {
+  implementation(Dependencies.Compose().Material)
+  // implementation(Dependencies.Compose().ToolingData)
+  implementation(Dependencies.Compose().Tooling)
+
+  testImplementation(Dependencies.JUnit)
+  testImplementation(Dependencies.Mockito)
+  testImplementation(Dependencies.Robolectric)
+  testImplementation(Dependencies.Truth)
+
+  androidTestImplementation(Dependencies.Compose().Testing)
+  androidTestImplementation(Dependencies.InstrumentationTests.Core)
+  androidTestImplementation(Dependencies.InstrumentationTests.Espresso)
+  androidTestImplementation(Dependencies.InstrumentationTests.Rules)
+  androidTestImplementation(Dependencies.InstrumentationTests.Runner)
+  androidTestImplementation(Dependencies.Truth)
+  androidTestUtil(Dependencies.InstrumentationTests.Orchestrator)
+}

slot-table-inspector/gradle.properties

@@ -0,0 +1,3 @@
+POM_ARTIFACT_ID=slot-table-inspector
+POM_NAME=Radiography slot table inspector
+POM_PACKAGING=aar

slot-table-inspector/src/androidTest/AndroidManifest.xml

@@ -0,0 +1,15 @@
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    package="com.squareup.radiography.compose.slottable.test">
+
+  <!--
+   Workaround required for running tests on API 30 devices.
+   See https://github.com/android/android-test/issues/743.
+   Version 1.3.1 of the AndroidX Test libraries remove the need for this workaround.
+   -->
+  <uses-permission android:name="android.permission.QUERY_ALL_PACKAGES" />
+
+  <application>
+    <activity android:name="androidx.activity.ComponentActivity" />
+  </application>
+</manifest>
+

slot-table-inspector/src/main/AndroidManifest.xml

@@ -0,0 +1 @@
+<manifest package="com.squareup.radiography.compose.slottable"/>