Add haptic and aural feedback service

And use the service in mine_digger to notify the user when they flag a bomb.

examples/mine_digger/lib/main.dart

@@ -4,6 +4,7 @@
 import 'dart:sky' as sky;
 import 'dart:math';
 
+import 'package:sky/mojo/activity.dart' as activity;
 import 'package:sky/painting/text_style.dart';
 import 'package:sky/rendering/flex.dart';
 import 'package:sky/theme/colors.dart' as colors;
@@ -83,33 +84,13 @@ class MineDiggerApp extends App {
     assert(false);
   }
 
-  Stopwatch longPressStopwatch;
-
   PointerEventListener _pointerDownHandlerFor(int posX, int posY) {
     return (sky.PointerEvent event) {
       if (event.buttons == 1) {
         probe(posX, posY);
       } else if (event.buttons == 2) {
         flag(posX, posY);
-      } else {
-        // Touch event.
-        longPressStopwatch = new Stopwatch()..start();
-      }
-    };
-  }
-
-  PointerEventListener _pointerUpHandlerFor(int posX, int posY) {
-    return (sky.PointerEvent event) {
-      if (longPressStopwatch == null)
-        return;
-      // Pointer down was a touch event.
-      if (longPressStopwatch.elapsedMilliseconds < 250) {
-        probe(posX, posY);
-      } else {
-        // Long press flags.
-        flag(posX, posY);
       }
-      longPressStopwatch = null;
     };
   }
 
@@ -128,7 +109,13 @@ class MineDiggerApp extends App {
         if (state == CellState.covered) {
           row.add(new Listener(
             onPointerDown: _pointerDownHandlerFor(ix, iy),
-            onPointerUp: _pointerUpHandlerFor(ix, iy),
+            onGestureTap: (_) {
+              probe(ix, iy);
+            },
+            onGestureLongPress: (_) {
+              activity.userFeedback.performHapticFeedback(activity.HapticFeedbackType_LONG_PRESS);
+              flag(ix, iy);
+            },
             child: new CoveredMineNode(
               flagged: false,
               posX: ix,

sky/packages/sky/lib/mojo/activity.dart

@@ -8,7 +8,7 @@ import 'dart:async';
 import 'package:sky/mojo/shell.dart' as shell;
 import 'package:sky_services/activity/activity.mojom.dart';
 
-export 'package:sky_services/activity/activity.mojom.dart' show Intent, ComponentName, StringExtra, SystemUIVisibility_STANDARD, SystemUIVisibility_FULLSCREEN, SystemUIVisibility_IMMERSIVE;
+export 'package:sky_services/activity/activity.mojom.dart';
 
 /// Dart wrapper around Activity mojo service available in Sky on Android.
 ///
@@ -27,6 +27,15 @@ ActivityProxy _initActivity() {
 
 final ActivityProxy _activity = _initActivity();
 
+UserFeedbackProxy _initUserFeedbackProxy() {
+  UserFeedbackProxy proxy = new UserFeedbackProxy.unbound();
+  _activity.ptr.getUserFeedback(proxy);
+  return proxy;
+}
+
+final UserFeedbackProxy _userFeedbackProxy = _initUserFeedbackProxy();
+final UserFeedback userFeedback = _userFeedbackProxy.ptr;
+
 Color _cachedPrimaryColor;
 String _cachedLabel;
 

sky/services/activity/BUILD.gn

@@ -27,7 +27,10 @@ if (is_android) {
   import("//build/config/android/rules.gni")
 
   android_library("activity_lib") {
-    java_files = [ "src/org/domokit/activity/ActivityImpl.java" ]
+    java_files = [
+      "src/org/domokit/activity/ActivityImpl.java",
+      "src/org/domokit/activity/UserFeedbackImpl.java",
+    ]
 
     deps = [
       "//base:base_java",

sky/services/activity/activity.mojom

@@ -39,6 +39,8 @@ enum SystemUIVisibility {
 //               of services that only work on specific platforms? We need to
 //               figure out how to rationalize this interface across platforms.
 interface Activity {
+  GetUserFeedback(UserFeedback& user_feedback);
+
   StartActivity(Intent intent);
   FinishCurrentActivity();
   SetTaskDescription(TaskDescription description);
@@ -53,3 +55,23 @@ interface Activity {
   // Where to store short-term files.
   GetCacheDir() => (string path);
 };
+
+enum HapticFeedbackType {
+  LONG_PRESS,
+  VIRTUAL_KEY,
+  KEYBOARD_TAP,
+  CLOCK_TICK,
+};
+
+enum AuralFeedbackType {
+  CLICK,
+  NAVIGATION_LEFT,
+  NAVIGATION_UP,
+  NAVIGATION_RIGHT,
+  NAVIGATION_DOWN,
+};
+
+interface UserFeedback {
+  PerformHapticFeedback(HapticFeedbackType type);
+  PerformAuralFeedback(AuralFeedbackType type);
+};

sky/services/activity/src/org/domokit/activity/ActivityImpl.java

@@ -10,6 +10,7 @@ import android.os.Build;
 import android.util.Log;
 import android.view.View;
 
+import org.chromium.mojo.bindings.InterfaceRequest;
 import org.chromium.mojo.system.MojoException;
 import org.chromium.mojom.activity.Activity;
 import org.chromium.mojom.activity.ComponentName;
@@ -17,6 +18,7 @@ import org.chromium.mojom.activity.Intent;
 import org.chromium.mojom.activity.StringExtra;
 import org.chromium.mojom.activity.SystemUiVisibility;
 import org.chromium.mojom.activity.TaskDescription;
+import org.chromium.mojom.activity.UserFeedback;
 
 /**
  * Android implementation of Activity.
@@ -38,6 +40,12 @@ public class ActivityImpl implements Activity {
     @Override
     public void onConnectionError(MojoException e) {}
 
+    @Override
+    public void getUserFeedback(InterfaceRequest<UserFeedback> request) {
+        View view = sCurrentActivity.getWindow().getDecorView();
+        UserFeedback.MANAGER.bind(new UserFeedbackImpl(view), request);
+    }
+
     @Override
     public void startActivity(Intent intent) {
         if (sCurrentActivity == null) {

sky/services/activity/src/org/domokit/activity/UserFeedbackImpl.java

+// Copyright 2015 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+package org.domokit.activity;
+
+import android.util.Log;
+import android.view.HapticFeedbackConstants;
+import android.view.SoundEffectConstants;
+import android.view.View;
+
+import org.chromium.mojo.system.MojoException;
+import org.chromium.mojom.activity.AuralFeedbackType;
+import org.chromium.mojom.activity.HapticFeedbackType;
+import org.chromium.mojom.activity.UserFeedback;
+
+/**
+ * Android implementation of UserFeedback.
+ */
+public class UserFeedbackImpl implements UserFeedback {
+    private static final String TAG = "UserFeedbackImpl";
+    private View mView;
+
+    public UserFeedbackImpl(View view) {
+        mView = view;
+    }
+
+    @Override
+    public void close() {}
+
+    @Override
+    public void onConnectionError(MojoException e) {}
+
+    @Override
+    public void performHapticFeedback(int type) {
+        int androidType = 0;
+        switch (type) {
+            case HapticFeedbackType.LONG_PRESS:
+                androidType = HapticFeedbackConstants.LONG_PRESS;
+                break;
+            case HapticFeedbackType.VIRTUAL_KEY:
+                androidType = HapticFeedbackConstants.VIRTUAL_KEY;
+                break;
+            case HapticFeedbackType.KEYBOARD_TAP:
+                androidType = HapticFeedbackConstants.KEYBOARD_TAP;
+                break;
+            case HapticFeedbackType.CLOCK_TICK:
+                androidType = HapticFeedbackConstants.CLOCK_TICK;
+                break;
+            default:
+                Log.e(TAG, "Unknown HapticFeedbackType " + type);
+                return;
+        }
+        mView.performHapticFeedback(androidType, HapticFeedbackConstants.FLAG_IGNORE_VIEW_SETTING);
+    }
+
+    @Override
+    public void performAuralFeedback(int type) {
+        int androidType = 0;
+        switch (type) {
+            case AuralFeedbackType.CLICK:
+                androidType = SoundEffectConstants.CLICK;
+                break;
+            case AuralFeedbackType.NAVIGATION_LEFT:
+                androidType = SoundEffectConstants.NAVIGATION_LEFT;
+                break;
+            case AuralFeedbackType.NAVIGATION_UP:
+                androidType = SoundEffectConstants.NAVIGATION_UP;
+                break;
+            case AuralFeedbackType.NAVIGATION_RIGHT:
+                androidType = SoundEffectConstants.NAVIGATION_RIGHT;
+                break;
+            case AuralFeedbackType.NAVIGATION_DOWN:
+                androidType = SoundEffectConstants.NAVIGATION_DOWN;
+                break;
+            default:
+                Log.e(TAG, "Unknown AuralFeedbackType " + type);
+                return;
+        }
+        mView.playSoundEffect(androidType);
+    }
+}