75 lines
2.7 KiB
C
75 lines
2.7 KiB
C
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// gKeyMapper daemon - D-Bus service for the GUI (control plane only).
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#ifndef GKEYMAPPER_DAEMON_IPC_DBUS_H
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#define GKEYMAPPER_DAEMON_IPC_DBUS_H
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#include <gio/gio.h>
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#include <functional>
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#include <string>
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namespace gkeymapper::daemon {
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enum class StartResult {
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Ok, // the well-known name is owned, calls are served
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NoBus, // no usable session bus; the daemon runs without IPC
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AlreadyRunning, // another instance owns the name; this process must exit
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};
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// The daemon's control-plane interface on the session bus.
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//
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// The GUI uses it for status and reload; `TestMapping` also makes a mapping
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// fireable from the command line (gdbus/busctl) without hardware. Nothing here
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// is on the keypress path.
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class DaemonService {
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public:
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// Re-reads the mappings file; returns whether it could be read.
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using ReloadFn = std::function<bool()>;
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// Description of the keyboard for GetStatus ("" when none is open).
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using DeviceFn = std::function<std::string()>;
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// Runs the mapping of G<index+1> (index is 0-based) and reports what ran.
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using TestFn = std::function<bool(int index, std::string& action)>;
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DaemonService() = default;
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~DaemonService();
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DaemonService(const DaemonService&) = delete;
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DaemonService& operator=(const DaemonService&) = delete;
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void set_reload(ReloadFn fn) { reload_ = std::move(fn); }
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void set_device(DeviceFn fn) { device_ = std::move(fn); }
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void set_test(TestFn fn) { test_ = std::move(fn); }
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StartResult start(std::string configPath);
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bool is_connected() const { return connection_ != nullptr; }
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// Dispatches pending messages. Non-blocking and cheap; call it once per
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// event-loop iteration. (Outgoing signals are flushed here too, so a
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// notification is visible to the GUI within one loop pass.)
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void pump();
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void notify_config_reloaded(bool ok);
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void notify_key_pressed(int index, const std::string& action);
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void notify_device_changed(bool present, const std::string& device);
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private:
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static void handle_method_call(GDBusConnection* connection, const gchar* sender,
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const gchar* objectPath, const gchar* interfaceName,
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const gchar* methodName, GVariant* parameters,
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GDBusMethodInvocation* invocation, gpointer userData);
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GDBusConnection* connection_ = nullptr;
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guint registration_ = 0;
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guint owner_ = 0;
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std::string configPath_;
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bool name_owned_ = false;
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bool name_lost_ = false;
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ReloadFn reload_;
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DeviceFn device_;
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TestFn test_;
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};
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} // namespace gkeymapper::daemon
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#endif // GKEYMAPPER_DAEMON_IPC_DBUS_H
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