Shareousel selection change callback component

A building block for payload toggling functinality. A component that
selectin change callback invocation.

Bug: 302691505
Test: IntentResolver-tests-unit
Change-Id: I02d99dedb6166568ecae1e52973df90598601c9d

2 files changed, 73 insertions, 0 deletions

diff --git a/java/src/com/android/intentresolver/contentpreview/PayloadToggleInteractor.kt b/java/src/com/android/intentresolver/contentpreview/PayloadToggleInteractor.kt
index 87f53e85..ca868226 100644
--- a/java/src/com/android/intentresolver/contentpreview/PayloadToggleInteractor.kt
+++ b/java/src/com/android/intentresolver/contentpreview/PayloadToggleInteractor.kt
@@ -17,6 +17,7 @@
 package com.android.intentresolver.contentpreview
 
 import android.net.Uri
+import android.service.chooser.ChooserAction
 import android.util.SparseArray
 import java.io.Closeable
 import kotlinx.coroutines.flow.Flow
@@ -51,6 +52,8 @@ class PayloadToggleInteractor {
         val previewUri: Uri?,
     )
 
+    data class CallbackResult(val customActions: List<ChooserAction>?)
+
     interface CursorReader : Closeable {
         val count: Int
         val hasMoreBefore: Boolean
diff --git a/java/src/com/android/intentresolver/contentpreview/SelectionChangeCallback.kt b/java/src/com/android/intentresolver/contentpreview/SelectionChangeCallback.kt
new file mode 100644
index 00000000..2cc58a97
--- /dev/null
+++ b/java/src/com/android/intentresolver/contentpreview/SelectionChangeCallback.kt
@@ -0,0 +1,70 @@
+/*
+ * 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 com.android.intentresolver.contentpreview
+
+import android.content.ContentInterface
+import android.content.Intent
+import android.content.Intent.EXTRA_CHOOSER_CUSTOM_ACTIONS
+import android.content.Intent.EXTRA_INTENT
+import android.net.Uri
+import android.os.Bundle
+import android.service.chooser.ChooserAction
+import com.android.intentresolver.contentpreview.PayloadToggleInteractor.CallbackResult
+
+// TODO: replace with the new API AdditionalContentContract$MethodNames#ON_SELECTION_CHANGED
+private const val MethodName = "onSelectionChanged"
+
+/**
+ * Encapsulates payload change callback invocation to the sharing app; handles callback arguments
+ * and result format mapping.
+ */
+class SelectionChangeCallback(
+    private val uri: Uri,
+    private val chooserIntent: Intent,
+    private val contentResolver: ContentInterface,
+) : (Intent) -> CallbackResult? {
+    fun onSelectionChanged(targetIntent: Intent): CallbackResult? =
+        contentResolver
+            .call(
+                requireNotNull(uri.authority) { "URI authority can not be null" },
+                MethodName,
+                uri.toString(),
+                Bundle().apply {
+                    putParcelable(
+                        EXTRA_INTENT,
+                        Intent(chooserIntent).apply { putExtra(EXTRA_INTENT, targetIntent) }
+                    )
+                }
+            )
+            ?.let { bundle ->
+                val actions =
+                    if (bundle.containsKey(EXTRA_CHOOSER_CUSTOM_ACTIONS)) {
+                        bundle
+                            .getParcelableArray(
+                                EXTRA_CHOOSER_CUSTOM_ACTIONS,
+                                ChooserAction::class.java
+                            )
+                            ?.filterNotNull()
+                            ?: emptyList()
+                    } else {
+                        null
+                    }
+                CallbackResult(actions)
+            }
+
+    override fun invoke(targetIntent: Intent) = onSelectionChanged(targetIntent)
+}