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- /*
- * context_listener.h - Context-dependent entity
- * Copyright (C) 2017 caryoscelus
- *
- * 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 3 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, see <http://www.gnu.org/licenses/>.
- */
- #ifndef __STUDIO__CONTEXT_LISTENER_H__9E128DC4
- #define __STUDIO__CONTEXT_LISTENER_H__9E128DC4
- #include <memory>
- #include <type_traits>
- #include "editor_context.h"
- namespace studio {
- class ContextListener {
- public:
- ContextListener(std::shared_ptr<EditorContext> context_=nullptr);
- virtual ~ContextListener() = default;
- public:
- std::shared_ptr<core::Context> get_core_context() const {
- return context->get_context();
- }
- std::shared_ptr<EditorContext> get_context() const {
- return context;
- }
- void set_core_context(std::shared_ptr<core::Context> core_context) {
- set_context(std::make_shared<EditorContext>(core_context));
- }
- virtual void set_context(std::shared_ptr<EditorContext> context_);
- protected:
- virtual core::Time get_time() {
- return time;
- }
- virtual void time_changed(core::Time time_) {
- time = time_;
- }
- virtual void fps_changed(core::Time::fps_type) {}
- virtual void active_node_changed(std::shared_ptr<core::AbstractValue>) {}
- template <class S, class F>
- void connect_boost(S& signal, F lambda) {
- auto slot = typename S::slot_type(lambda);
- slot.track_foreign(destroy_detector);
- signal.connect(slot);
- }
- private:
- std::shared_ptr<EditorContext> context;
- core::Time time;
- struct Null {};
- std::shared_ptr<Null> destroy_detector;
- };
- }
- #endif
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