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/*
* Copyright © 2012 Canonical Ltd.
*
* This program is free software: you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License version 3,
* as published by the Free Software Foundation.
*
* 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 Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* Authored by: Thomas Voß <thomas.voss@canonical.com>
*/
#ifndef CORE_DBUS_IMPL_PROPERTY_H_
#define CORE_DBUS_IMPL_PROPERTY_H_
namespace core
{
namespace dbus
{
template<typename PropertyType>
const typename Property<PropertyType>::ValueType&
Property<PropertyType>::get() const
{
if (parent->is_stub())
{
Super::mutable_get() = parent->invoke_method_synchronously<
interfaces::Properties::Get,
types::TypedVariant<typename Property<PropertyType>::ValueType>
>(interface, name).value().get();
}
return Super::get();
}
template<typename PropertyType>
void
Property<PropertyType>::set(const typename Property<PropertyType>::ValueType& new_value)
{
if (parent->is_stub())
{
if (!writable)
{
throw std::runtime_error("Property is not writable");
}
parent->invoke_method_synchronously<
interfaces::Properties::Set,
void
>(interface, name, types::TypedVariant<ValueType>(new_value));
}
Super::set(new_value);
}
template<typename PropertyType>
bool
Property<PropertyType>::is_writable() const
{
return writable;
}
template<typename PropertyType>
const core::Signal<void>&
Property<PropertyType>::about_to_be_destroyed() const
{
return signal_about_to_be_destroyed;
}
template<typename PropertyType>
std::shared_ptr<Property<PropertyType>>
Property<PropertyType>::make_property(const std::shared_ptr<Object>& parent)
{
return std::shared_ptr<Property<PropertyType>>(
new Property<PropertyType>(
parent,
traits::Service<typename PropertyType::Interface>::interface_name(),
PropertyType::name(),
PropertyType::writable));
}
template<typename PropertyType>
Property<PropertyType>::Property(
const std::shared_ptr<Object>& parent,
const std::string& interface,
const std::string& name,
bool writable)
: parent(parent),
interface(interface),
name(name),
writable(writable)
{
if (!parent->is_stub())
{
parent->get_property_router.install_route(
Object::PropertyKey
{
traits::Service<typename PropertyType::Interface>::interface_name(),
PropertyType::name()
},
std::bind(&Property::handle_get, this, std::placeholders::_1));
parent->set_property_router.install_route(
Object::PropertyKey
{
traits::Service<typename PropertyType::Interface>::interface_name(),
PropertyType::name()
},
std::bind(
&Property::handle_set,
this,
std::placeholders::_1));
}
}
template<typename PropertyType>
Property<PropertyType>::~Property()
{
try
{
signal_about_to_be_destroyed();
} catch(...)
{
// Consciously dropping all exceptions here.
// There is hardly anything we can do about it while
// tearing down the object anyway.
}
}
template<typename PropertyType>
void
Property<PropertyType>::handle_get(const Message::Ptr& msg)
{
auto reply = Message::make_method_return(msg);
reply->writer() << types::TypedVariant<ValueType>(Super::get());
parent->parent->get_connection()->send(reply);
}
template<typename PropertyType>
void
Property<PropertyType>::handle_set(const Message::Ptr& msg)
{
if (!writable)
{
auto error = Message::make_error(
msg,
traits::Service<interfaces::Properties>::interface_name() + ".NotWritableError",
name + "is not writable");
parent->parent->get_connection()->send(error);
return;
}
std::string s; types::TypedVariant<ValueType> value;
try
{
msg->reader() >> s >> s >> value;
Super::set(value.get());
}
catch (...)
{
auto error = Message::make_error(
msg,
traits::Service<interfaces::Properties>::interface_name() + ".NotWritableError",
name + "is not writable");
parent->parent->get_connection()->send(error);
return;
}
auto reply = Message::make_method_return(msg);
parent->parent->get_connection()->send(reply);
}
template<typename PropertyType>
void
Property<PropertyType>::handle_changed(const types::Variant& arg)
{
try
{
auto value = arg.as<typename PropertyType::ValueType>();
Super::set(value);
}
catch (const std::exception &e){
std::cout << __PRETTY_FUNCTION__ << ": " << e.what() << std::endl;
}
catch (...)
{
std::cout << __PRETTY_FUNCTION__ << ": " << "Unknown exception." << std::endl;
}
}
}
}
#endif // CORE_DBUS_IMPL_PROPERTY_H_
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