Interface for WidgetPickerSearchPipeline.
Test: not required
Bug: b/157286785
Change-Id: Ib0a4d2915bd678304e7971cdfd7296811ea8587b
diff --git a/src/com/android/launcher3/widget/picker/search/WidgetsPickerSearchPipeline.java b/src/com/android/launcher3/widget/picker/search/WidgetsPickerSearchPipeline.java
new file mode 100644
index 0000000..d12782c
--- /dev/null
+++ b/src/com/android/launcher3/widget/picker/search/WidgetsPickerSearchPipeline.java
@@ -0,0 +1,44 @@
+/*
+ * Copyright (C) 2021 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.launcher3.widget.picker.search;
+
+import com.android.launcher3.widget.model.WidgetsListBaseEntry;
+
+import java.util.List;
+import java.util.function.Consumer;
+
+/**
+ * An interface for a pipeline to handle widgets search.
+ */
+public interface WidgetsPickerSearchPipeline {
+
+ /**
+ * Performs a search query asynchronically. Invokes {@code callback} when the search is
+ * complete.
+ */
+ void query(String input, Consumer<List<WidgetsListBaseEntry>> callback);
+
+ /**
+ * Cancels any ongoing search request.
+ */
+ default void cancel() {};
+
+ /**
+ * Cleans up after search is no longer needed.
+ */
+ default void destroy() {};
+}