chrome/browser/ui/toolbar/component_toolbar_actions_factory.cc

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "chrome/browser/ui/toolbar/component_toolbar_actions_factory.h"
   6
   7 #include "base/command_line.h"
   8 #include "base/lazy_instance.h"
   9 #include "chrome/browser/ui/toolbar/media_router_action.h"
  10 #include "chrome/browser/ui/toolbar/toolbar_action_view_controller.h"
  11 #include "chrome/common/chrome_switches.h"
  12 #include "extensions/common/feature_switch.h"
  13
  14 namespace {
  15
  16 ComponentToolbarActionsFactory* testing_factory_ = nullptr;
  17
  18 base::LazyInstance<ComponentToolbarActionsFactory> lazy_factory =
  19     LAZY_INSTANCE_INITIALIZER;
  20
  21 }  // namespace
  22
  23 ComponentToolbarActionsFactory::ComponentToolbarActionsFactory()
  24     : num_component_actions_(-1) {}
  25 ComponentToolbarActionsFactory::~ComponentToolbarActionsFactory() {}
  26
  27 // static
  28 ComponentToolbarActionsFactory* ComponentToolbarActionsFactory::GetInstance() {
  29   return testing_factory_ ? testing_factory_ : &lazy_factory.Get();
  30 }
  31
  32 ScopedVector<ToolbarActionViewController>
  33 ComponentToolbarActionsFactory::GetComponentToolbarActions() {
  34   ScopedVector<ToolbarActionViewController> component_actions;
  35
  36   // This is currently behind the extension-action-redesign flag, as it is
  37   // designed for the new toolbar.
  38   if (!extensions::FeatureSwitch::extension_action_redesign()->IsEnabled())
  39     return component_actions.Pass();
  40
  41   // Add component toolbar actions here.
  42   // This current design means that the ComponentToolbarActionsFactory is aware
  43   // of all actions. Since we should *not* have an excessive amount of these
  44   // (since each will have an action in the toolbar or overflow menu), this
  45   // should be okay. If this changes, we should rethink this design to have,
  46   // e.g., RegisterChromeAction().
  47
  48 #if defined(ENABLE_MEDIA_ROUTER)
  49   if (base::CommandLine::ForCurrentProcess()->HasSwitch(
  50           ::switches::kEnableMediaRouter)) {
  51     component_actions.push_back(new MediaRouterAction());
  52   }
  53 #endif
  54
  55   return component_actions.Pass();
  56 }
  57
  58 int ComponentToolbarActionsFactory::GetNumComponentActions() {
  59   if (num_component_actions_ == -1)
  60     num_component_actions_ = GetComponentToolbarActions().size();
  61
  62   return num_component_actions_;
  63 }
  64
  65 // static
  66 void ComponentToolbarActionsFactory::SetTestingFactory(
  67     ComponentToolbarActionsFactory* factory) {
  68   testing_factory_ = factory;
  69 }