Add basic Chrome interaction with the mash shelf.

chrome/browser/ui/ash/launcher/chrome_mash_shelf_controller.cc

+// Copyright 2016 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 "chrome/browser/ui/ash/launcher/chrome_mash_shelf_controller.h"
+
+#include "chrome/browser/profiles/profile_manager.h"
+#include "chrome/browser/ui/ash/chrome_launcher_prefs.h"
+#include "chrome/common/pref_names.h"
+#include "chrome/grit/theme_resources.h"
+#include "components/prefs/pref_service.h"
+#include "content/public/common/mojo_shell_connection.h"
+#include "mojo/shell/public/cpp/connector.h"
+#include "skia/public/type_converters.h"
+#include "ui/base/resource/resource_bundle.h"
+
+// static
+ChromeMashShelfController* ChromeMashShelfController::instance_ = NULL;

[James Cook, 2016/04/06 04:29:52]

drive-by nit: nullptr

[msw, 2016/04/07 20:34:57]

Done.

+
+ChromeMashShelfController::~ChromeMashShelfController() {}
+
+// static
+ChromeMashShelfController* ChromeMashShelfController::CreateInstance() {
+  DCHECK(!instance_);
+  instance_ = new ChromeMashShelfController();
+  instance_->Init();
+  return instance_;
+}
+
+ChromeMashShelfController::ChromeMashShelfController()
+    : observer_binding_(this), item_delegate_binding_(this) {}
+
+void ChromeMashShelfController::Init() {
+  mojo::Connector* connector =
+      content::MojoShellConnection::Get()->GetConnector();
+  connector->ConnectToInterface("mojo:ash_sysui", &shelf_);
+
+  // Set shelf alignment and auto-hide behavior from preferences.
+  Profile* profile = ProfileManager::GetActiveUserProfile();
+
+  const std::string& alignment_value =
+      profile->GetPrefs()->GetString(prefs::kShelfAlignmentLocal);
+  shelf_->SetAlignment(static_cast<mash::shelf::mojom::Alignment>(
+      ash::AlignmentFromPref(alignment_value)));
+
+  const std::string& auto_hide_value =
+      profile->GetPrefs()->GetString(prefs::kShelfAutoHideBehaviorLocal);
+  shelf_->SetAutoHideBehavior(static_cast<mash::shelf::mojom::AutoHideBehavior>(
+      ash::AutoHideBehaviorFromPref(auto_hide_value)));
+
+  // Create a test shortcut item to a fake application.
+  mash::shelf::mojom::ShelfItemPtr item(mash::shelf::mojom::ShelfItem::New());
+  item->id = "mojo:fake_app";
+  item->title = "Fake Mojo App (test pinned shelf item)";
+  ResourceBundle& rb = ResourceBundle::GetSharedInstance();
+  const gfx::Image& image = rb.GetImageNamed(IDR_PRODUCT_LOGO_32);
+  item->image = skia::mojom::Bitmap::From(*image.ToSkBitmap());
+  shelf_->AddItem(std::move(item),
+                  item_delegate_binding_.CreateInterfacePtrAndBind());
+
+  // Start observing the shelf now that it has been initialized.
+  shelf_->AddObserver(observer_binding_.CreateInterfacePtrAndBind());
+}
+
+void ChromeMashShelfController::OnAlignmentChanged(
+    mash::shelf::mojom::Alignment alignment) {
+  const char* value =
+      ash::AlignmentToPref(static_cast<ash::ShelfAlignment>(alignment));
+  Profile* profile = ProfileManager::GetActiveUserProfile();
+  profile->GetPrefs()->SetString(prefs::kShelfAlignmentLocal, value);
+}
+
+void ChromeMashShelfController::OnAutoHideBehaviorChanged(
+    mash::shelf::mojom::AutoHideBehavior auto_hide) {
+  const char* value = ash::AutoHideBehaviorToPref(
+      static_cast<ash::ShelfAutoHideBehavior>(auto_hide));
+  if (!value)
+    return;
+  Profile* profile = ProfileManager::GetActiveUserProfile();
+  profile->GetPrefs()->SetString(prefs::kShelfAutoHideBehaviorLocal, value);
+}
+
+void ChromeMashShelfController::ExecuteCommand(const mojo::String& id,
+                                               uint32_t command_id,
+                                               int32_t event_flags) {
+  NOTIMPLEMENTED();
+}
+
+void ChromeMashShelfController::ItemRemoved(const mojo::String& id) {
+  NOTIMPLEMENTED();
+}
+
+void ChromeMashShelfController::ItemReordered(const mojo::String& id,
+                                              uint32_t order) {
+  NOTIMPLEMENTED();
+}