| // Copyright 2015 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 DEVICE_USB_DEVICE_MANAGER_IMPL_H_ |
| #define DEVICE_USB_DEVICE_MANAGER_IMPL_H_ |
| |
| #include <queue> |
| #include <set> |
| |
| #include "base/containers/scoped_ptr_map.h" |
| #include "base/macros.h" |
| #include "base/memory/ref_counted.h" |
| #include "base/memory/scoped_ptr.h" |
| #include "base/memory/weak_ptr.h" |
| #include "device/devices_app/usb/public/interfaces/device_manager.mojom.h" |
| #include "device/devices_app/usb/public/interfaces/permission_provider.mojom.h" |
| #include "third_party/mojo/src/mojo/public/cpp/bindings/array.h" |
| #include "third_party/mojo/src/mojo/public/cpp/bindings/binding.h" |
| #include "third_party/mojo/src/mojo/public/cpp/bindings/interface_request.h" |
| |
| namespace base { |
| class SequencedTaskRunner; |
| } |
| |
| namespace device { |
| |
| class UsbDevice; |
| class UsbDeviceFilter; |
| class UsbDeviceHandle; |
| |
| namespace usb { |
| |
| class DeviceManagerDelegate; |
| |
| // Implementation of the public DeviceManager interface. This interface can be |
| // requested from the devices app located at "mojo:devices", if available. |
| class DeviceManagerImpl : public DeviceManager { |
| public: |
| DeviceManagerImpl( |
| mojo::InterfaceRequest<DeviceManager> request, |
| PermissionProviderPtr permission_provider, |
| scoped_refptr<base::SequencedTaskRunner> service_task_runner); |
| ~DeviceManagerImpl() override; |
| |
| void set_connection_error_handler(const mojo::Closure& error_handler) { |
| connection_error_handler_ = error_handler; |
| } |
| |
| private: |
| class ServiceThreadHelper; |
| |
| // DeviceManager implementation: |
| void GetDevices(EnumerationOptionsPtr options, |
| const GetDevicesCallback& callback) override; |
| void GetDeviceChanges(const GetDeviceChangesCallback& callback) override; |
| void OpenDevice(const mojo::String& guid, |
| mojo::InterfaceRequest<Device> device_request, |
| const OpenDeviceCallback& callback) override; |
| |
| void OnOpenDevicePermissionCheckComplete( |
| mojo::InterfaceRequest<Device> device_request, |
| const OpenDeviceCallback& callback, |
| mojo::Array<mojo::String> allowed_guids); |
| |
| // Callbacks to handle the async responses from the underlying UsbService. |
| void OnGetDevices(const GetDevicesCallback& callback, |
| mojo::Array<DeviceInfoPtr> devices); |
| |
| // Methods called by |helper_| when devices are added or removed. |
| void OnDeviceAdded(DeviceInfoPtr device); |
| void OnDeviceRemoved(std::string device_guid); |
| void MaybeRunDeviceChangesCallback(); |
| void OnEnumerationPermissionCheckComplete( |
| mojo::Array<DeviceInfoPtr> devices_added, |
| const std::set<std::string>& devices_removed, |
| mojo::Array<mojo::String> allowed_guids); |
| |
| PermissionProviderPtr permission_provider_; |
| scoped_refptr<base::SequencedTaskRunner> service_task_runner_; |
| |
| // If there are unfinished calls to GetDeviceChanges their callbacks |
| // are stored in |device_change_callbacks_|. Otherwise device changes |
| // are collected in |devices_added_| and |devices_removed_| until the |
| // next call to GetDeviceChanges. |
| std::queue<GetDeviceChangesCallback> device_change_callbacks_; |
| mojo::Array<DeviceInfoPtr> devices_added_; |
| std::set<std::string> devices_removed_; |
| // To ensure that GetDeviceChangesCallbacks are called in the correct order |
| // only perform a single request to |permission_provider_| at a time. |
| bool permission_request_pending_ = false; |
| |
| // |helper_| is owned by the service thread and holds a weak reference |
| // back to the device manager that created it. |
| ServiceThreadHelper* helper_; |
| |
| mojo::Closure connection_error_handler_; |
| |
| mojo::Binding<DeviceManager> binding_; |
| base::WeakPtrFactory<DeviceManagerImpl> weak_factory_; |
| |
| DISALLOW_COPY_AND_ASSIGN(DeviceManagerImpl); |
| }; |
| |
| } // namespace usb |
| } // namespace device |
| |
| #endif // DEVICE_USB_DEVICE_MANAGER_IMPL_H_ |