Add Quick Answers View

1. Implement quick answers native view which supports rich content and
will be placed outside of context menu.
2. Update quick_answer_model to provide QuickAnswers data to
QuickAnswers View.


Bug: 1020004
Change-Id: Id6ee62352e143559170fe58ba1d928f16187d488
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2026114
Reviewed-by: Avi Drissman <avi@chromium.org>
Reviewed-by: Xiaohui Chen <xiaohuic@chromium.org>
Reviewed-by: Xiyuan Xia <xiyuan@chromium.org>
Commit-Queue: Xiao Yang <yanxiao@google.com>
Cr-Commit-Position: refs/heads/master@{#742192}

ash/BUILD.gn

@@ -560,6 +560,10 @@ component("ash") {
     "power/hid_battery_util.h",
     "power/peripheral_battery_tracker.cc",
     "power/peripheral_battery_tracker.h",
+    "quick_answers/quick_answers_ui_controller.cc",
+    "quick_answers/quick_answers_ui_controller.h",
+    "quick_answers/ui/quick_answers_view.cc",
+    "quick_answers/ui/quick_answers_view.h",
     "root_window_controller.cc",
     "root_window_settings.cc",
     "root_window_settings.h",
@@ -1435,6 +1439,7 @@ component("ash") {
     "//cc/debug",
     "//cc/paint:paint",
     "//chromeos/assistant:buildflags",
+    "//chromeos/components/quick_answers",
 
     # TODO(https://crbug.com/644336): Make CrasAudioHandler Chrome or Ash only.
     "//chromeos/audio",

ash/DEPS

@@ -56,6 +56,7 @@ include_rules = [
   "+chromeos/audio",
   "+chromeos/components/multidevice/logging/logging.h",
   "+chromeos/components/proximity_auth/public/mojom",
+  "+chromeos/components/quick_answers",
   "+chromeos/constants",
   # TODO(https://crbug.com/940810): Eliminate this.
   "+chromeos/dbus/initialize_dbus_client.h",

ash/quick_answers/quick_answers_ui_controller.cc

@@ -0,0 +1,78 @@
+// Copyright 2020 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.
+
+#include "ash/quick_answers/quick_answers_ui_controller.h"
+
+#include "ash/public/cpp/assistant/assistant_interface_binder.h"
+#include "ash/quick_answers/ui/quick_answers_view.h"
+#include "ash/shell.h"
+#include "ash/strings/grit/ash_strings.h"
+#include "base/bind.h"
+#include "base/optional.h"
+#include "chromeos/components/quick_answers/quick_answers_model.h"
+#include "chromeos/constants/chromeos_features.h"
+#include "chromeos/services/assistant/public/mojom/assistant.mojom.h"
+#include "mojo/public/cpp/bindings/remote.h"
+#include "ui/aura/client/aura_constants.h"
+#include "ui/base/l10n/l10n_util.h"
+#include "ui/views/widget/widget.h"
+
+using chromeos::quick_answers::QuickAnswer;
+namespace ash {
+
+QuickAnswersUiController::~QuickAnswersUiController() {
+  Close();
+}
+
+void QuickAnswersUiController::CreateQuickAnswersView(
+    const gfx::Rect& bounds,
+    const std::string& title) {
+  DCHECK(!quick_answers_view_);
+  SetActiveQuery(title);
+  quick_answers_view_ = new QuickAnswersView(bounds, title, this);
+  quick_answers_view_->GetWidget()->ShowInactive();
+}
+
+void QuickAnswersUiController::OnQuickAnswersViewPressed() {
+  Close();
+  mojo::Remote<chromeos::assistant::mojom::AssistantController>
+      assistant_controller;
+  ash::AssistantInterfaceBinder::GetInstance()->BindController(
+      assistant_controller.BindNewPipeAndPassReceiver());
+  assistant_controller->StartTextInteraction(
+      query_, /*allow_tts=*/false,
+      chromeos::assistant::mojom::AssistantQuerySource::kQuickAnswers);
+}
+
+void QuickAnswersUiController::Close() {
+  if (!quick_answers_view_)
+    return;
+
+  quick_answers_view_->GetWidget()->Close();
+  quick_answers_view_ = nullptr;
+}
+
+void QuickAnswersUiController::RenderQuickAnswersViewWithResult(
+    const gfx::Rect& bounds,
+    const QuickAnswer& quick_answer) {
+  if (!quick_answers_view_)
+    return;
+
+  // QuickAnswersView was initiated with a loading page and will be updated
+  // when quick answers result from server side is ready.
+  quick_answers_view_->UpdateView(bounds, quick_answer);
+}
+
+void QuickAnswersUiController::SetActiveQuery(const std::string& query) {
+  query_ = query;
+}
+
+void QuickAnswersUiController::UpdateQuickAnswersBounds(
+    const gfx::Rect& bounds) {
+  if (!quick_answers_view_)
+    return;
+
+  quick_answers_view_->UpdateAnchorViewBounds(bounds);
+}
+}  // namespace ash

ash/quick_answers/quick_answers_ui_controller.h

@@ -0,0 +1,56 @@
+// Copyright 2020 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.
+
+#ifndef ASH_QUICK_ANSWERS_QUICK_ANSWERS_UI_CONTROLLER_H_
+#define ASH_QUICK_ANSWERS_QUICK_ANSWERS_UI_CONTROLLER_H_
+
+#include <string>
+
+#include "ash/ash_export.h"
+#include "ui/gfx/geometry/rect.h"
+
+namespace chromeos {
+namespace quick_answers {
+struct QuickAnswer;
+}  // namespace quick_answers
+}  // namespace chromeos
+
+namespace ash {
+class QuickAnswersView;
+
+// A controller to show/hide and handle interactions for quick
+// answers view.
+class ASH_EXPORT QuickAnswersUiController {
+ public:
+  QuickAnswersUiController() = default;
+  ~QuickAnswersUiController();
+
+  QuickAnswersUiController(const QuickAnswersUiController&) = delete;
+  QuickAnswersUiController& operator=(const QuickAnswersUiController&) = delete;
+
+  void Close();
+  // Constructs/resets |quick_answers_view_|.
+  void CreateQuickAnswersView(const gfx::Rect& bounds,
+                              const std::string& title);
+
+  void OnQuickAnswersViewPressed();
+
+  // |bounds| is the bound of context menu.
+  void RenderQuickAnswersViewWithResult(
+      const gfx::Rect& bounds,
+      const chromeos::quick_answers::QuickAnswer& quick_answer);
+
+  void SetActiveQuery(const std::string& query);
+
+  void UpdateQuickAnswersBounds(const gfx::Rect& bounds);
+
+ private:
+  // Owned by view hierarchy.
+  QuickAnswersView* quick_answers_view_ = nullptr;
+  std::string query_;
+};
+
+}  // namespace ash
+
+#endif  // ASH_QUICK_ANSWERS_QUICK_ANSWERS_UI_CONTROLLER_H_