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backends/keymapper/input-watcher.h

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+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * 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 COMMON_INPUT_WATCHER_H
+#define COMMON_INPUT_WATCHER_H
+
+#include "common/scummsys.h"
+
+#include "backends/keymapper/hardware-input.h"
+#include "common/events.h"
+
+namespace Common {
+
+struct HardwareInput;
+
+/**
+ * Watches events for inputs that can be bound to actions
+ *
+ * When the watch mode is enabled, the watcher disables the Keymapper
+ * and sets itself as an event observer. Once an event corresponding
+ * to a hardware input is received, it is saved for later retrieval.
+ *
+ * Used by the remap dialog to capture input.
+ */
+class InputWatcher : private EventObserver {
+public:
+	InputWatcher(EventDispatcher *eventDispatcher, Keymapper *keymapper);
+
+	void startWatching();
+	void stopWatching();
+
+	bool isWatching() const;
+	HardwareInput checkForCapturedInput();
+
+private:
+	bool notifyEvent(const Event &event) override;
+
+	EventDispatcher *_eventDispatcher;
+	Keymapper *_keymapper;
+
+	bool _watching;
+	HardwareInput _hwInput;
+};
+
+} // End of namespace Common
+
+#endif // #ifndef COMMON_INPUT_WATCHER_H