Add taskbar TAPL tests

- Added TAPL objects to support TAPL tests for taskbar features
- Added tests for major taskbar features: hiding/showing the taskbar, opening all apps, lauching apps and app deep shortcuts from the taskbar/all apps page, launching apps and app deep shortcuts in splitscreen
- These tests should only run for large devices

Design: go/taskbar-tapl-tests
Test: ran tests locally with invalid configurations and remotely
Bug: 215218813
Change-Id: I3c28c339707467414aa47fa633f87fa0c1fdee57

quickstep/ext_tests/src/com/android/quickstep/DebugQuickstepTestInformationHandler.java

@@ -0,0 +1,120 @@
+/*
+ * Copyright (C) 2022 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.quickstep;
+
+import static com.android.launcher3.util.Executors.MAIN_EXECUTOR;
+
+import android.content.Context;
+import android.content.res.Resources;
+import android.os.Bundle;
+
+import androidx.annotation.Nullable;
+
+import com.android.launcher3.BaseQuickstepLauncher;
+import com.android.launcher3.Launcher;
+import com.android.launcher3.R;
+import com.android.launcher3.taskbar.LauncherTaskbarUIController;
+import com.android.launcher3.testing.DebugTestInformationHandler;
+import com.android.launcher3.testing.TestProtocol;
+
+import java.util.concurrent.ExecutionException;
+
+/**
+ * Class to handle requests from tests, including debug ones, to Quickstep Launcher builds.
+ */
+public abstract class DebugQuickstepTestInformationHandler extends QuickstepTestInformationHandler {
+
+    private final DebugTestInformationHandler mDebugTestInformationHandler;
+
+    public DebugQuickstepTestInformationHandler(Context context) {
+        super(context);
+        mDebugTestInformationHandler = new DebugTestInformationHandler(context);
+    }
+
+    @Override
+    public Bundle call(String method, String arg, @Nullable Bundle extras) {
+        Bundle response = new Bundle();
+        switch (method) {
+            case TestProtocol.REQUEST_ENABLE_MANUAL_TASKBAR_STASHING:
+                runOnUIThread(l -> {
+                    enableManualTaskbarStashing(l, true);
+                });
+                return response;
+
+            case TestProtocol.REQUEST_DISABLE_MANUAL_TASKBAR_STASHING:
+                runOnUIThread(l -> {
+                    enableManualTaskbarStashing(l, false);
+                });
+                return response;
+
+            case TestProtocol.REQUEST_UNSTASH_TASKBAR_IF_STASHED:
+                runOnUIThread(l -> {
+                    enableManualTaskbarStashing(l, true);
+
+                    BaseQuickstepLauncher quickstepLauncher = (BaseQuickstepLauncher) l;
+                    LauncherTaskbarUIController taskbarUIController =
+                            quickstepLauncher.getTaskbarUIController();
+
+                    // Allow null-pointer to catch illegal states.
+                    taskbarUIController.unstashTaskbarIfStashed();
+
+                    enableManualTaskbarStashing(l, false);
+                });
+                return response;
+
+            case TestProtocol.REQUEST_STASHED_TASKBAR_HEIGHT: {
+                final Resources resources = mContext.getResources();
+                response.putInt(TestProtocol.TEST_INFO_RESPONSE_FIELD,
+                        resources.getDimensionPixelSize(R.dimen.taskbar_stashed_size));
+                return response;
+            }
+
+            default:
+                response = super.call(method, arg, extras);
+                if (response != null) return response;
+                return mDebugTestInformationHandler.call(method, arg, extras);
+        }
+    }
+
+    private void enableManualTaskbarStashing(Launcher launcher, boolean enable) {
+        BaseQuickstepLauncher quickstepLauncher = (BaseQuickstepLauncher) launcher;
+        LauncherTaskbarUIController taskbarUIController =
+                quickstepLauncher.getTaskbarUIController();
+
+        // Allow null-pointer to catch illegal states.
+        taskbarUIController.enableManualStashingForTests(enable);
+    }
+
+    /**
+     * Runs the given command on the UI thread.
+     */
+    private static void runOnUIThread(UIThreadCommand command) {
+        try {
+            MAIN_EXECUTOR.submit(() -> {
+                command.execute(Launcher.ACTIVITY_TRACKER.getCreatedActivity());
+                return null;
+            }).get();
+        } catch (ExecutionException | InterruptedException e) {
+            throw new RuntimeException(e);
+        }
+    }
+
+    private interface UIThreadCommand {
+
+        void execute(Launcher launcher);
+    }
+}
+