diff options
Diffstat (limited to '3rdParty/Boost/boost/signals/slot.hpp')
-rw-r--r-- | 3rdParty/Boost/boost/signals/slot.hpp | 157 |
1 files changed, 157 insertions, 0 deletions
diff --git a/3rdParty/Boost/boost/signals/slot.hpp b/3rdParty/Boost/boost/signals/slot.hpp new file mode 100644 index 0000000..bbf1848 --- /dev/null +++ b/3rdParty/Boost/boost/signals/slot.hpp @@ -0,0 +1,157 @@ +// Boost.Signals library + +// Copyright Douglas Gregor 2001-2004. Use, modification and +// distribution is subject to the Boost Software License, Version +// 1.0. (See accompanying file LICENSE_1_0.txt or copy at +// http://www.boost.org/LICENSE_1_0.txt) + +// For more information, see http://www.boost.org + +#ifndef BOOST_SIGNALS_SLOT_HEADER +#define BOOST_SIGNALS_SLOT_HEADER + +#include <boost/signals/detail/signals_common.hpp> +#include <boost/signals/connection.hpp> +#include <boost/signals/trackable.hpp> +#include <boost/visit_each.hpp> +#include <boost/shared_ptr.hpp> +#include <cassert> + +#ifdef BOOST_HAS_ABI_HEADERS +# include BOOST_ABI_PREFIX +#endif + +namespace boost { + namespace BOOST_SIGNALS_NAMESPACE { + namespace detail { + class BOOST_SIGNALS_DECL slot_base { + // We would have to enumerate all of the signalN classes here as + // friends to make this private (as it otherwise should be). We can't + // name all of them because we don't know how many there are. + public: + struct data_t { + std::vector<const trackable*> bound_objects; + connection watch_bound_objects; + }; + shared_ptr<data_t> get_data() const { return data; } + + // Get the set of bound objects + std::vector<const trackable*>& get_bound_objects() const + { return data->bound_objects; } + + // Determine if this slot is still "active", i.e., all of the bound + // objects still exist + bool is_active() const + { return data->watch_bound_objects.connected(); } + + protected: + // Create a connection for this slot + void create_connection(); + + shared_ptr<data_t> data; + + private: + static void bound_object_destructed(void*, void*) {} + }; + } // end namespace detail + + // Get the slot so that it can be copied + template<typename F> + reference_wrapper<const F> + get_invocable_slot(const F& f, BOOST_SIGNALS_NAMESPACE::detail::signal_tag) + { return reference_wrapper<const F>(f); } + + template<typename F> + const F& + get_invocable_slot(const F& f, BOOST_SIGNALS_NAMESPACE::detail::reference_tag) + { return f; } + + template<typename F> + const F& + get_invocable_slot(const F& f, BOOST_SIGNALS_NAMESPACE::detail::value_tag) + { return f; } + + // Get the slot so that it can be inspected for trackable objects + template<typename F> + const F& + get_inspectable_slot(const F& f, BOOST_SIGNALS_NAMESPACE::detail::signal_tag) + { return f; } + + template<typename F> + const F& + get_inspectable_slot(const reference_wrapper<F>& f, BOOST_SIGNALS_NAMESPACE::detail::reference_tag) + { return f.get(); } + + template<typename F> + const F& + get_inspectable_slot(const F& f, BOOST_SIGNALS_NAMESPACE::detail::value_tag) + { return f; } + + // Determines the type of the slot - is it a signal, a reference to a + // slot or just a normal slot. + template<typename F> + typename BOOST_SIGNALS_NAMESPACE::detail::get_slot_tag<F>::type + tag_type(const F&) + { + typedef typename BOOST_SIGNALS_NAMESPACE::detail::get_slot_tag<F>::type + the_tag_type; + the_tag_type tag = the_tag_type(); + return tag; + } + + } // end namespace BOOST_SIGNALS_NAMESPACE + + template<typename SlotFunction> + class slot : public BOOST_SIGNALS_NAMESPACE::detail::slot_base { + typedef BOOST_SIGNALS_NAMESPACE::detail::slot_base inherited; + typedef typename inherited::data_t data_t; + + public: + template<typename F> + slot(const F& f) : slot_function(BOOST_SIGNALS_NAMESPACE::get_invocable_slot(f, BOOST_SIGNALS_NAMESPACE::tag_type(f))) + { + this->data.reset(new data_t); + + // Visit each of the bound objects and store them for later use + // An exception thrown here will allow the basic_connection to be + // destroyed when this goes out of scope, and no other connections + // have been made. + BOOST_SIGNALS_NAMESPACE::detail::bound_objects_visitor + do_bind(this->data->bound_objects); + visit_each(do_bind, + BOOST_SIGNALS_NAMESPACE::get_inspectable_slot + (f, BOOST_SIGNALS_NAMESPACE::tag_type(f))); + create_connection(); + } + +#ifdef __BORLANDC__ + template<typename F> + slot(F* f) : slot_function(f) + { + this->data.reset(new data_t); + create_connection(); + } +#endif // __BORLANDC__ + + // We would have to enumerate all of the signalN classes here as friends + // to make this private (as it otherwise should be). We can't name all of + // them because we don't know how many there are. + public: + // Get the slot function to call the actual slot + const SlotFunction& get_slot_function() const { return slot_function; } + + void release() const { data->watch_bound_objects.set_controlling(false); } + + private: + slot(); // no default constructor + slot& operator=(const slot&); // no assignment operator + + SlotFunction slot_function; + }; +} // end namespace boost + +#ifdef BOOST_HAS_ABI_HEADERS +# include BOOST_ABI_SUFFIX +#endif + +#endif // BOOST_SIGNALS_SLOT_HEADER |