Notify Files App when ARC++ app is installed/removed

components/arc/intent_helper/arc_intent_helper_bridge.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 "components/arc/intent_helper/arc_intent_helper_bridge.h"
 
 #include <utility>
 #include <vector>
 
 #include "ash/common/shell_delegate.h"
 #include "ash/common/wallpaper/wallpaper_controller.h"
 #include "ash/common/wm_shell.h"
 #include "ash/public/interfaces/new_window.mojom.h"
 #include "ash/shell.h"
 #include "base/command_line.h"
 #include "base/memory/weak_ptr.h"
 #include "components/arc/arc_bridge_service.h"
 #include "components/arc/intent_helper/activity_icon_loader.h"
 #include "components/arc/intent_helper/link_handler_model_impl.h"
 #include "components/arc/intent_helper/local_activity_resolver.h"
 #include "ui/base/layout.h"
 #include "url/gurl.h"
 
 namespace arc {
 
+// TODO(oka): Avoid to assume the class is singleton.
+ArcIntentHelperBridge* g_arc_intent_helper_bridge = nullptr;
+
 // static
 const char ArcIntentHelperBridge::kArcIntentHelperPackageName[] =
     "org.chromium.arc.intent_helper";
 
 ArcIntentHelperBridge::ArcIntentHelperBridge(
     ArcBridgeService* bridge_service,
     const scoped_refptr<ActivityIconLoader>& icon_loader,
     const scoped_refptr<LocalActivityResolver>& activity_resolver)
     : ArcService(bridge_service),
       binding_(this),
       icon_loader_(icon_loader),
       activity_resolver_(activity_resolver) {
   DCHECK(thread_checker_.CalledOnValidThread());
+  DCHECK(!g_arc_intent_helper_bridge);
+
   arc_bridge_service()->intent_helper()->AddObserver(this);
+
+  g_arc_intent_helper_bridge = this;
 }
 
 ArcIntentHelperBridge::~ArcIntentHelperBridge() {
   DCHECK(thread_checker_.CalledOnValidThread());
+  DCHECK_EQ(this, g_arc_intent_helper_bridge);
+
   arc_bridge_service()->intent_helper()->RemoveObserver(this);
+
+  g_arc_intent_helper_bridge = nullptr;
+}
+
+// static
+ArcIntentHelperBridge* ArcIntentHelperBridge::Get() {
+  return g_arc_intent_helper_bridge;
 }
 
 void ArcIntentHelperBridge::OnInstanceReady() {
   DCHECK(thread_checker_.CalledOnValidThread());
   ash::Shell::GetInstance()->set_link_handler_model_factory(this);
   auto* instance =
       arc_bridge_service()->intent_helper()->GetInstanceForMethod("Init");
   DCHECK(instance);
   instance->Init(binding_.CreateInterfacePtrAndBind());
 }
@@ skipping 28 matching lines @@
   DCHECK(thread_checker_.CalledOnValidThread());
   ash::WmShell::Get()->wallpaper_controller()->OpenSetWallpaperPage();
 }
 
 void ArcIntentHelperBridge::SetWallpaperDeprecated(
     mojo::Array<uint8_t> jpeg_data) {
   DCHECK(thread_checker_.CalledOnValidThread());
   LOG(ERROR) << "IntentHelper.SetWallpaper is deprecated";
 }
 
+void ArcIntentHelperBridge::AddObserver(Observer* observer) {
+  observer_list_.AddObserver(observer);
+}
+
+void ArcIntentHelperBridge::RemoveObserver(Observer* observer) {
+  observer_list_.RemoveObserver(observer);
+}
+
 std::unique_ptr<ash::LinkHandlerModel> ArcIntentHelperBridge::CreateModel(
     const GURL& url) {
   DCHECK(thread_checker_.CalledOnValidThread());
   std::unique_ptr<LinkHandlerModelImpl> impl(
       new LinkHandlerModelImpl(icon_loader_));
   if (!impl->Init(url))
     return nullptr;
   return std::move(impl);
 }
 
@@ skipping 58 matching lines @@
     const std::string& method_name_for_logging,
     uint32_t min_instance_version) {
   return GetIntentHelperInstanceWithErrorCode(method_name_for_logging,
                                               min_instance_version, nullptr);
 }
 
 void ArcIntentHelperBridge::OnIntentFiltersUpdated(
     mojo::Array<mojom::IntentFilterPtr> filters) {
   DCHECK(thread_checker_.CalledOnValidThread());
   activity_resolver_->UpdateIntentFilters(std::move(filters));
+
+  for (auto& observer : observer_list_)
+    observer.OnAppsUpdated();
 }
 
 }  // namespace arc