Begin extracting `emptystate` module.

This CL just contains the initial code-moves to group relevant classes
(including some inner classes/interfaces that are being pulled out of
`MultiProfilePagerAdapter`), without any other anticipated fixes or
reorganization. This corresponds to snapshots 1-3 of the prototype
ag/24516421 (to be followed with the other work that was started in
that CL).

Bug: 302311217
Test: IntentResolverUnitTests, CtsSharesheetDeviceTest
Change-Id: If82a761193f6ff0605c5a46c106f7c95699350c0

6 files changed, 160 insertions, 10 deletions

diff --git a/java/tests/src/com/android/intentresolver/ChooserActivityOverrideData.java b/java/tests/src/com/android/intentresolver/ChooserActivityOverrideData.java
index 3bf144dd..3ee80c14 100644
--- a/java/tests/src/com/android/intentresolver/ChooserActivityOverrideData.java
+++ b/java/tests/src/com/android/intentresolver/ChooserActivityOverrideData.java
@@ -26,9 +26,9 @@ import android.content.res.Resources;
 import android.database.Cursor;
 import android.os.UserHandle;
 
-import com.android.intentresolver.MultiProfilePagerAdapter.CrossProfileIntentsChecker;
 import com.android.intentresolver.chooser.TargetInfo;
 import com.android.intentresolver.contentpreview.ImageLoader;
+import com.android.intentresolver.emptystate.CrossProfileIntentsChecker;
 import com.android.intentresolver.shortcuts.ShortcutLoader;
 
 import java.util.function.Consumer;
diff --git a/java/tests/src/com/android/intentresolver/ChooserWrapperActivity.java b/java/tests/src/com/android/intentresolver/ChooserWrapperActivity.java
index 64c4a50a..c9f47a33 100644
--- a/java/tests/src/com/android/intentresolver/ChooserWrapperActivity.java
+++ b/java/tests/src/com/android/intentresolver/ChooserWrapperActivity.java
@@ -34,9 +34,9 @@ import android.os.UserHandle;
 
 import androidx.lifecycle.ViewModelProvider;
 
-import com.android.intentresolver.MultiProfilePagerAdapter.CrossProfileIntentsChecker;
 import com.android.intentresolver.chooser.DisplayResolveInfo;
 import com.android.intentresolver.chooser.TargetInfo;
+import com.android.intentresolver.emptystate.CrossProfileIntentsChecker;
 import com.android.intentresolver.grid.ChooserGridAdapter;
 import com.android.intentresolver.icons.TargetDataLoader;
 import com.android.intentresolver.shortcuts.ShortcutLoader;
diff --git a/java/tests/src/com/android/intentresolver/MultiProfilePagerAdapterTest.kt b/java/tests/src/com/android/intentresolver/MultiProfilePagerAdapterTest.kt
index dcf53cea..56034f0a 100644
--- a/java/tests/src/com/android/intentresolver/MultiProfilePagerAdapterTest.kt
+++ b/java/tests/src/com/android/intentresolver/MultiProfilePagerAdapterTest.kt
@@ -22,6 +22,7 @@ import android.widget.ListView
 import androidx.test.platform.app.InstrumentationRegistry
 import com.android.intentresolver.MultiProfilePagerAdapter.PROFILE_PERSONAL
 import com.android.intentresolver.MultiProfilePagerAdapter.PROFILE_WORK
+import com.android.intentresolver.emptystate.EmptyStateProvider
 import com.google.common.collect.ImmutableList
 import com.google.common.truth.Truth.assertThat
 import java.util.Optional
@@ -46,7 +47,7 @@ class MultiProfilePagerAdapterTest {
                     listView.setAdapter(bindAdapter)
                 },
                 ImmutableList.of(personalListAdapter),
-                object : MultiProfilePagerAdapter.EmptyStateProvider {},
+                object : EmptyStateProvider {},
                 { false },
                 PROFILE_PERSONAL,
                 null,
@@ -80,7 +81,7 @@ class MultiProfilePagerAdapterTest {
                     listView.setAdapter(bindAdapter)
                 },
                 ImmutableList.of(personalListAdapter, workListAdapter),
-                object : MultiProfilePagerAdapter.EmptyStateProvider {},
+                object : EmptyStateProvider {},
                 { false },
                 PROFILE_PERSONAL,
                 WORK_USER_HANDLE, // TODO: why does this test pass even if this is null?
@@ -119,7 +120,7 @@ class MultiProfilePagerAdapterTest {
                     listView.setAdapter(bindAdapter)
                 },
                 ImmutableList.of(personalListAdapter, workListAdapter),
-                object : MultiProfilePagerAdapter.EmptyStateProvider {},
+                object : EmptyStateProvider {},
                 { false },
                 PROFILE_WORK, // <-- This test specifically requests we start on work profile.
                 WORK_USER_HANDLE, // TODO: why does this test pass even if this is null?
@@ -159,7 +160,7 @@ class MultiProfilePagerAdapterTest {
                     listView.setAdapter(bindAdapter)
                 },
                 ImmutableList.of(),
-                object : MultiProfilePagerAdapter.EmptyStateProvider {},
+                object : EmptyStateProvider {},
                 { false },
                 PROFILE_PERSONAL,
                 null,
@@ -187,7 +188,7 @@ class MultiProfilePagerAdapterTest {
                     listView.setAdapter(bindAdapter)
                 },
                 ImmutableList.of(),
-                object : MultiProfilePagerAdapter.EmptyStateProvider {},
+                object : EmptyStateProvider {},
                 { false },
                 PROFILE_PERSONAL,
                 null,
@@ -221,7 +222,7 @@ class MultiProfilePagerAdapterTest {
                     listView.setAdapter(bindAdapter)
                 },
                 ImmutableList.of(personalListAdapter, workListAdapter),
-                object : MultiProfilePagerAdapter.EmptyStateProvider {},
+                object : EmptyStateProvider {},
                 { true }, // <-- Work mode is quiet.
                 PROFILE_WORK,
                 WORK_USER_HANDLE,
@@ -255,7 +256,7 @@ class MultiProfilePagerAdapterTest {
                     listView.setAdapter(bindAdapter)
                 },
                 ImmutableList.of(personalListAdapter, workListAdapter),
-                object : MultiProfilePagerAdapter.EmptyStateProvider {},
+                object : EmptyStateProvider {},
                 { false }, // <-- Work mode is not quiet.
                 PROFILE_WORK,
                 WORK_USER_HANDLE,
diff --git a/java/tests/src/com/android/intentresolver/ResolverWrapperActivity.java b/java/tests/src/com/android/intentresolver/ResolverWrapperActivity.java
index d4bd123a..fbcfcd35 100644
--- a/java/tests/src/com/android/intentresolver/ResolverWrapperActivity.java
+++ b/java/tests/src/com/android/intentresolver/ResolverWrapperActivity.java
@@ -34,10 +34,10 @@ import android.util.Pair;
 import androidx.annotation.NonNull;
 import androidx.test.espresso.idling.CountingIdlingResource;
 
-import com.android.intentresolver.MultiProfilePagerAdapter.CrossProfileIntentsChecker;
 import com.android.intentresolver.chooser.DisplayResolveInfo;
 import com.android.intentresolver.chooser.SelectableTargetInfo;
 import com.android.intentresolver.chooser.TargetInfo;
+import com.android.intentresolver.emptystate.CrossProfileIntentsChecker;
 import com.android.intentresolver.icons.TargetDataLoader;
 
 import java.util.List;
diff --git a/java/tests/src/com/android/intentresolver/emptystate/CompositeEmptyStateProviderTest.kt b/java/tests/src/com/android/intentresolver/emptystate/CompositeEmptyStateProviderTest.kt
new file mode 100644
index 00000000..4c05dfb1
--- /dev/null
+++ b/java/tests/src/com/android/intentresolver/emptystate/CompositeEmptyStateProviderTest.kt
@@ -0,0 +1,65 @@
+/*
+ * Copyright (C) 2023 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.intentresolver.emptystate
+
+import com.android.intentresolver.ResolverListAdapter
+import com.android.intentresolver.mock
+import com.google.common.truth.Truth.assertThat
+import org.junit.Test
+
+class CompositeEmptyStateProviderTest {
+    val listAdapter = mock<ResolverListAdapter>()
+
+    val emptyState1 = object : EmptyState {}
+    val emptyState2 = object : EmptyState {}
+
+    val positiveEmptyStateProvider1 =
+        object : EmptyStateProvider {
+            override fun getEmptyState(listAdapter: ResolverListAdapter) = emptyState1
+        }
+    val positiveEmptyStateProvider2 =
+        object : EmptyStateProvider {
+            override fun getEmptyState(listAdapter: ResolverListAdapter) = emptyState2
+        }
+    val nullEmptyStateProvider =
+        object : EmptyStateProvider {
+            override fun getEmptyState(listAdapter: ResolverListAdapter) = null
+        }
+
+    @Test
+    fun testComposedProvider_returnsFirstEmptyStateInOrder() {
+        val provider =
+            CompositeEmptyStateProvider(
+                nullEmptyStateProvider,
+                positiveEmptyStateProvider1,
+                positiveEmptyStateProvider2
+            )
+        assertThat(provider.getEmptyState(listAdapter)).isSameInstanceAs(emptyState1)
+    }
+
+    @Test
+    fun testComposedProvider_allProvidersReturnNull_composedResultIsNull() {
+        val provider = CompositeEmptyStateProvider(nullEmptyStateProvider)
+        assertThat(provider.getEmptyState(listAdapter)).isNull()
+    }
+
+    @Test
+    fun testComposedProvider_noEmptyStateIfNoDelegateProviders() {
+        val provider = CompositeEmptyStateProvider()
+        assertThat(provider.getEmptyState(listAdapter)).isNull()
+    }
+}
diff --git a/java/tests/src/com/android/intentresolver/emptystate/CrossProfileIntentsCheckerTest.kt b/java/tests/src/com/android/intentresolver/emptystate/CrossProfileIntentsCheckerTest.kt
new file mode 100644
index 00000000..2bcddf59
--- /dev/null
+++ b/java/tests/src/com/android/intentresolver/emptystate/CrossProfileIntentsCheckerTest.kt
@@ -0,0 +1,84 @@
+/*
+ * Copyright (C) 2023 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.intentresolver.emptystate
+
+import android.content.ContentResolver
+import android.content.Intent
+import android.content.pm.IPackageManager
+import com.android.intentresolver.mock
+import com.android.intentresolver.whenever
+import com.google.common.truth.Truth.assertThat
+import org.junit.Test
+import org.mockito.Mockito.any
+import org.mockito.Mockito.anyInt
+import org.mockito.Mockito.eq
+import org.mockito.Mockito.nullable
+
+class CrossProfileIntentsCheckerTest {
+    private val PERSONAL_USER_ID = 10
+    private val WORK_USER_ID = 20
+
+    private val contentResolver = mock<ContentResolver>()
+
+    @Test
+    fun testChecker_hasCrossProfileIntents() {
+        val packageManager =
+            mock<IPackageManager> {
+                whenever(
+                        canForwardTo(
+                            any(Intent::class.java),
+                            nullable(String::class.java),
+                            eq(PERSONAL_USER_ID),
+                            eq(WORK_USER_ID)
+                        )
+                    )
+                    .thenReturn(true)
+            }
+        val checker = CrossProfileIntentsChecker(contentResolver, packageManager)
+        val intents = listOf(Intent())
+        assertThat(checker.hasCrossProfileIntents(intents, PERSONAL_USER_ID, WORK_USER_ID)).isTrue()
+    }
+
+    @Test
+    fun testChecker_noCrossProfileIntents() {
+        val packageManager =
+            mock<IPackageManager> {
+                whenever(
+                        canForwardTo(
+                            any(Intent::class.java),
+                            nullable(String::class.java),
+                            anyInt(),
+                            anyInt()
+                        )
+                    )
+                    .thenReturn(false)
+            }
+        val checker = CrossProfileIntentsChecker(contentResolver, packageManager)
+        val intents = listOf(Intent())
+        assertThat(checker.hasCrossProfileIntents(intents, PERSONAL_USER_ID, WORK_USER_ID))
+            .isFalse()
+    }
+
+    @Test
+    fun testChecker_noIntents() {
+        val packageManager = mock<IPackageManager>()
+        val checker = CrossProfileIntentsChecker(contentResolver, packageManager)
+        val intents = listOf<Intent>()
+        assertThat(checker.hasCrossProfileIntents(intents, PERSONAL_USER_ID, WORK_USER_ID))
+            .isFalse()
+    }
+}