CLOUD: Add Cloud::Manager and Cloud::Storage

This commit introduces Common::CloudManager, which can be accessed from
OSystem.

The backend for this manager is Cloud::Manager (defined in
backends/cloud/manager.h). It should load all users storages from
configs and provide access to current Storage instance. For now it just
creates a new one.

Cloud::Storage (backends/cloud/storage.h) provides an API to interact
with cloud storage, for example, create new directory or sync files.
Right now it's not ready and has only two dummy methods: listDirectory()
and syncSaves().

There is Cloud::Dropbox::DropboxStorage backend
(backends/cloud/dropbox/dropboxstorage.h) for Cloud::Storage. Right now
it implements both listDirectory() and syncSaves() with starting timer
task and handling it by printing out some JSON examples.

1 files changed, 44 insertions, 0 deletions

diff --git a/backends/cloud/manager.h b/backends/cloud/manager.h
new file mode 100644
index 0000000000..11cc595da4
--- /dev/null
+++ b/backends/cloud/manager.h
@@ -0,0 +1,44 @@
+/* ScummVM - Graphic Adventure Engine
+*
+* ScummVM is the legal property of its developers, whose names
+* are too numerous to list here. Please refer to the COPYRIGHT
+* file distributed with this source distribution.
+*
+* This program is free software; you can redistribute it and/or
+* modify it under the terms of the GNU General Public License
+* as published by the Free Software Foundation; either version 2
+* of the License, or (at your option) any later version.
+*
+* This program is distributed in the hope that it will be useful,
+* but WITHOUT ANY WARRANTY; without even the implied warranty of
+* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+* GNU General Public License for more details.
+*
+* You should have received a copy of the GNU General Public License
+* along with this program; if not, write to the Free Software
+* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+*
+*/
+
+#ifndef BACKENDS_CLOUD_MANAGER_H
+#define BACKENDS_CLOUD_MANAGER_H
+
+#include "common/cloudmanager.h"
+#include "common/str.h"
+
+namespace Cloud {
+
+class Manager: public Common::CloudManager {
+	Storage* _currentStorage;
+
+public:
+	Manager();
+	virtual ~Manager();
+
+	virtual Storage* getCurrentStorage();
+	virtual void syncSaves();
+};
+
+} //end of namespace Cloud
+
+#endif