mash: Create and show a shelf in mash.

ash/mus/shell_delegate_mus.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 "ash/mus/shell_delegate_mus.h"
 
 #include <utility>
 
 #include "ash/common/gpu_support_stub.h"
 #include "ash/common/media_delegate.h"
 #include "ash/common/palette_delegate.h"
 #include "ash/common/pointer_watcher_delegate.h"
 #include "ash/common/session/session_state_delegate.h"
+#include "ash/common/shelf/shelf_delegate.h"
 #include "ash/common/system/tray/default_system_tray_delegate.h"
 #include "ash/mus/accessibility_delegate_mus.h"
 #include "ash/mus/new_window_delegate_mus.h"
 #include "base/memory/ptr_util.h"
 #include "base/strings/string16.h"
+#include "base/strings/string_util.h"
 #include "components/user_manager/user_info_impl.h"
 #include "ui/app_list/presenter/app_list_presenter.h"
 #include "ui/gfx/image/image.h"
 
 namespace ash {
 namespace {
 
 class SessionStateDelegateStub : public SessionStateDelegate {
  public:
   SessionStateDelegateStub()
@@ skipping 61 matching lines @@
   void HandleMediaPrevTrack() override { NOTIMPLEMENTED(); }
   MediaCaptureState GetMediaCaptureState(UserIndex index) override {
     NOTIMPLEMENTED();
     return MEDIA_CAPTURE_NONE;
   }
 
  private:
   DISALLOW_COPY_AND_ASSIGN(MediaDelegateStub);
 };
 
+class ShelfDelegateStub : public ShelfDelegate {
+ public:
+  ShelfDelegateStub() {}
+  ~ShelfDelegateStub() override {}
+
+  // ShelfDelegate overrides:
+  void OnShelfCreated(Shelf* shelf) override {}
+  void OnShelfDestroyed(Shelf* shelf) override {}
+  void OnShelfAlignmentChanged(Shelf* shelf) override {}
+  void OnShelfAutoHideBehaviorChanged(Shelf* shelf) override {}
+  void OnShelfAutoHideStateChanged(Shelf* shelf) override {}
+  void OnShelfVisibilityStateChanged(Shelf* shelf) override {}
+  ShelfID GetShelfIDForAppID(const std::string& app_id) override { return 0; }
+  bool HasShelfIDToAppIDMapping(ShelfID id) const override { return false; }
+  const std::string& GetAppIDForShelfID(ShelfID id) override {
+    return base::EmptyString();
+  }
+  void PinAppWithID(const std::string& app_id) override {}
+  bool IsAppPinned(const std::string& app_id) override { return false; }
+  void UnpinAppWithID(const std::string& app_id) override {}
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(ShelfDelegateStub);
+};
+
 }  // namespace
 
 ShellDelegateMus::ShellDelegateMus(
     std::unique_ptr<app_list::AppListPresenter> app_list_presenter,
     shell::Connector* connector)
     : app_list_presenter_(std::move(app_list_presenter)),
       connector_(connector) {
   // |connector_| may be null in tests.
 }
 
@@ skipping 48 matching lines @@
 
 void ShellDelegateMus::OpenUrlFromArc(const GURL& url) {
   NOTIMPLEMENTED();
 }
 
 app_list::AppListPresenter* ShellDelegateMus::GetAppListPresenter() {
   return app_list_presenter_.get();
 }
 
 ShelfDelegate* ShellDelegateMus::CreateShelfDelegate(ShelfModel* model) {
-  NOTIMPLEMENTED();
-  return nullptr;
+  // TODO(mash): Implement a real shelf delegate; maybe port ShelfDelegateMus?
+  return new ShelfDelegateStub;
 }
 
 SystemTrayDelegate* ShellDelegateMus::CreateSystemTrayDelegate() {
   NOTIMPLEMENTED() << " Using the default SystemTrayDelegate implementation";
   return new DefaultSystemTrayDelegate;
 }
 
 UserWallpaperDelegate* ShellDelegateMus::CreateUserWallpaperDelegate() {
   NOTIMPLEMENTED();
   return nullptr;
@@ skipping 43 matching lines @@
   NOTIMPLEMENTED();
   return base::string16();
 }
 
 gfx::Image ShellDelegateMus::GetDeprecatedAcceleratorImage() const {
   NOTIMPLEMENTED();
   return gfx::Image();
 }
 
 }  // namespace ash