shill: Create mockable ModemManagerProxy on appearance of new ModemManagers.

BUG=chromium-os:17649
TEST=unit tests, tested on device

Change-Id: Id9e6500168d63493eb94bd7939e379b964bef063
Reviewed-on: http://gerrit.chromium.org/gerrit/4269
Tested-by: Darin Petkov <petkov@chromium.org>
Reviewed-by: Chris Masone <cmasone@chromium.org>
diff --git a/modem_manager_proxy.h b/modem_manager_proxy.h
new file mode 100644
index 0000000..b782267
--- /dev/null
+++ b/modem_manager_proxy.h
@@ -0,0 +1,58 @@
+// Copyright (c) 2011 The Chromium OS 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 SHILL_MODEM_MANAGER_PROXY_
+#define SHILL_MODEM_MANAGER_PROXY_
+
+#include <base/basictypes.h>
+
+#include "shill/mm.h"
+#include "shill/modem_manager_proxy_interface.h"
+
+namespace shill {
+
+class ModemManager;
+
+// There's a single proxy per ModemManager service identified by its DBus |path|
+// and owner name |service|.
+class ModemManagerProxy : public ModemManagerProxyInterface {
+ public:
+  ModemManagerProxy(ModemManager *manager,
+                    const std::string &path,
+                    const std::string &service);
+  virtual ~ModemManagerProxy();
+
+  // Inherited from ModemManagerProxyInterface.
+  virtual std::vector<DBus::Path> EnumerateDevices();
+
+ private:
+  class Proxy : public org::freedesktop::ModemManager_proxy,
+                public DBus::ObjectProxy {
+   public:
+    Proxy(ModemManager *manager,
+          DBus::Connection *connection,
+          const std::string &path,
+          const std::string &service);
+    virtual ~Proxy();
+
+   private:
+    // Signal callbacks inherited from ModemManager_proxy.
+    virtual void DeviceAdded(const DBus::Path &device);
+    virtual void DeviceRemoved(const DBus::Path &device);
+
+    // The owner of this proxy.
+    ModemManager *manager_;
+
+    DISALLOW_COPY_AND_ASSIGN(Proxy);
+  };
+
+  DBus::Connection connection_;
+  Proxy proxy_;
+
+  DISALLOW_COPY_AND_ASSIGN(ModemManagerProxy);
+};
+
+}  // namespace shill
+
+#endif  // SHILL_MODEM_MANAGER_PROXY_