茂之钳
42 lines
1.1 KiB
C++
42 lines
1.1 KiB
C++
#pragma once
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#include "vde/brep/feature_tree.h"
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#include <functional>
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#include <string>
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#include <vector>
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namespace vde::brep {
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/// Callback type for model changes.
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/// Receives the feature name and the new model after rebuild.
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using UpdateCallback = std::function<void(const std::string& feature_name, const BrepModel& new_model)>;
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/**
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* @brief Notifies listeners when features change.
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*
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* Integrates with FeatureHistory: after each apply/undo/redo,
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* call notify() to push the updated model to all registered callbacks.
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*
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* @ingroup brep
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*/
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class UpdateNotifier {
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public:
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/// Register a callback. Called on every notify().
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void on_update(UpdateCallback cb) { callbacks_.push_back(std::move(cb)); }
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/// Notify all registered listeners.
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void notify(const std::string& feature, const BrepModel& model) {
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for (auto& cb : callbacks_) cb(feature, model);
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}
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/// Remove all callbacks.
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void clear() { callbacks_.clear(); }
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/// Number of registered callbacks.
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[[nodiscard]] size_t listener_count() const { return callbacks_.size(); }
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private:
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std::vector<UpdateCallback> callbacks_;
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};
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} // namespace vde::brep
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