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author | Vaxry <[email protected]> | 2024-04-21 01:47:24 +0100 |
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committer | Vaxry <[email protected]> | 2024-04-21 01:47:45 +0100 |
commit | a141bbbea503ae7b320eba614a80ca2f4e5c1cba (patch) | |
tree | f5d2c7f05c835da95dc6a225c65ec4d84809ca88 | |
parent | a10a6fff5530136a9ea024fa5f98c5ba5671bd2d (diff) | |
download | Hyprland-a141bbbea503ae7b320eba614a80ca2f4e5c1cba.tar.gz Hyprland-a141bbbea503ae7b320eba614a80ca2f4e5c1cba.zip |
helpers: Add new C++ Signal and Listener classes
A memory-safe alternative to wl_signal
-rw-r--r-- | src/helpers/signal/Listener.cpp | 13 | ||||
-rw-r--r-- | src/helpers/signal/Listener.hpp | 24 | ||||
-rw-r--r-- | src/helpers/signal/Signal.cpp | 22 | ||||
-rw-r--r-- | src/helpers/signal/Signal.hpp | 19 |
4 files changed, 78 insertions, 0 deletions
diff --git a/src/helpers/signal/Listener.cpp b/src/helpers/signal/Listener.cpp new file mode 100644 index 00000000..ae506343 --- /dev/null +++ b/src/helpers/signal/Listener.cpp @@ -0,0 +1,13 @@ +#include "Listener.hpp" +#include "Signal.hpp" + +CSignalListener::CSignalListener(std::function<void(std::any)> handler) : m_fHandler(handler) { + ; +} + +void CSignalListener::emit(std::any data) { + if (!m_fHandler) + return; + + m_fHandler(data); +} diff --git a/src/helpers/signal/Listener.hpp b/src/helpers/signal/Listener.hpp new file mode 100644 index 00000000..d2edb253 --- /dev/null +++ b/src/helpers/signal/Listener.hpp @@ -0,0 +1,24 @@ +#pragma once + +#include <any> +#include <memory> +#include <functional> + +class CSignal; + +class CSignalListener { + public: + CSignalListener(std::function<void(std::any)> handler); + + CSignalListener(CSignalListener&&) = delete; + CSignalListener(CSignalListener&) = delete; + CSignalListener(const CSignalListener&) = delete; + CSignalListener(const CSignalListener&&) = delete; + + void emit(std::any data); + + private: + std::function<void(std::any)> m_fHandler; +}; + +typedef std::shared_ptr<CSignalListener> CHyprSignalListener; diff --git a/src/helpers/signal/Signal.cpp b/src/helpers/signal/Signal.cpp new file mode 100644 index 00000000..a8adc275 --- /dev/null +++ b/src/helpers/signal/Signal.cpp @@ -0,0 +1,22 @@ +#include "Signal.hpp" +#include <algorithm> + +void CSignal::emit(std::any data) { + bool dirty = false; + + for (auto& l : m_vListeners) { + if (const CHyprSignalListener L = l.lock()) + L->emit(data); + else + dirty = true; + } + + if (dirty) + std::erase_if(m_vListeners, [](const auto& other) { return !other.lock(); }); +} + +CHyprSignalListener CSignal::registerListener(std::function<void(std::any)> handler) { + CHyprSignalListener listener = std::make_shared<CSignalListener>(handler); + m_vListeners.emplace_back(std::weak_ptr<CSignalListener>(listener)); + return listener; +} diff --git a/src/helpers/signal/Signal.hpp b/src/helpers/signal/Signal.hpp new file mode 100644 index 00000000..38f9ea0c --- /dev/null +++ b/src/helpers/signal/Signal.hpp @@ -0,0 +1,19 @@ +#pragma once + +#include <functional> +#include <any> +#include <vector> +#include <memory> + +#include "Listener.hpp" + +class CSignal { + public: + void emit(std::any data); + + // + [[nodiscard("Listener is unregistered when the ptr is lost")]] CHyprSignalListener registerListener(std::function<void(std::any)> handler); + + private: + std::vector<std::weak_ptr<CSignalListener>> m_vListeners; +}; |