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engines/tetraedge/te/te_callback.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 TETRAEDGE_TE_TE_CALLBACK_H
+#define TETRAEDGE_TE_TE_CALLBACK_H
+
+//#include "common/callback.h"
+
+namespace Tetraedge {
+
+class TeICallback0Param {
+public:
+	virtual ~TeICallback0Param() {}
+	virtual bool operator()() = 0;
+	virtual bool call() = 0;
+	virtual float priority() const = 0;
+	virtual bool equals(const TeICallback0Param *other) const = 0;
+};
+
+/**
+ * TeCallback is similar to Common::Callback, but it takes 0 parameters,
+ * supports priority, and the function returns bool.
+ */
+template<class T> class TeCallback0Param : public TeICallback0Param {
+public:
+	typedef bool(T::*TMethod)();
+protected:
+	T *_object;
+	TMethod _method;
+	float _priority;
+public:
+	TeCallback0Param(T *object, TMethod method, float priority_ = 0.0f): _object(object), _method(method), _priority(priority_) {}
+	virtual ~TeCallback0Param() {}
+	bool operator()() override { return (_object->*_method)(); }
+	bool call() override { return (_object->*_method)(); }
+
+	virtual float priority() const override { return _priority; }
+
+	bool equals(const TeICallback0Param *other) const override {
+		const TeCallback0Param<T> *o = dynamic_cast<const TeCallback0Param<T> *>(other);
+		return o && _object == o->_object && _method == o->_method;
+	}
+	//virtual void setPriority()
+};
+
+template<class T> class TeICallback1Param {
+public:
+	virtual ~TeICallback1Param() {}
+	virtual bool operator()(T data) = 0;
+	virtual bool call(T data) = 0;
+	virtual float &priority() = 0;
+	virtual bool equals(const TeICallback1Param *other) const = 0;
+};
+
+
+template<class T, typename S> class TeCallback1Param : public TeICallback1Param<S> {
+public:
+	typedef bool(T::*TMethod)(S);
+protected:
+	T *_object;
+	TMethod _method;
+	float _priority;
+public:
+	TeCallback1Param(T *object, TMethod method, float priority_ = 0.0f): _object(object), _method(method), _priority(priority_) {}
+	virtual ~TeCallback1Param() {}
+	bool operator()(S data) override { return (_object->*_method)(data); }
+	bool call(S data) override { return (_object->*_method)(data); }
+
+	virtual float &priority() override { return _priority; }
+
+	bool equals(const TeICallback1Param<S> *other) const override {
+		const TeCallback1Param<T, S> *o = dynamic_cast<const TeCallback1Param<T, S> *>(other);
+		return o && _object == o->_object && _method == o->_method;
+	}
+	//virtual void setPriority()
+};
+
+
+template<class S, class T> class TeICallback2Param {
+public:
+	virtual ~TeICallback2Param() {}
+	virtual bool operator()(S data1, T data2) = 0;
+	virtual bool call(S data1, T data2) = 0;
+	virtual float &priority() = 0;
+	virtual bool equals(const TeICallback2Param *other) const = 0;
+};
+
+
+template<class C, class S, typename T> class TeCallback2Param : public TeICallback2Param<S, T> {
+public:
+	typedef bool(C::*TMethod)(S, T);
+protected:
+	C *_object;
+	TMethod _method;
+	float _priority;
+public:
+	TeCallback2Param(C *object, TMethod method, float priority_ = 0.0f): _object(object), _method(method), _priority(priority_) {}
+	virtual ~TeCallback2Param() {}
+	bool operator()(S data1, T data2) override { return (_object->*_method)(data1, data2); }
+	bool call(S data1, T data2) override { return (_object->*_method)(data1, data2); }
+
+	virtual float &priority() override { return _priority; }
+
+	bool equals(const TeICallback2Param<S, T> *other) const override {
+		const TeCallback2Param<C, S, T> *o = dynamic_cast<const TeCallback2Param<C, S, T> *>(other);
+		return o && _object == o->_object && _method == o->_method;
+	}
+	//virtual void setPriority()
+};
+
+
+
+} // end namespace Tetraedge
+
+#endif // TETRAEDGE_TE_TE_CALLBACK_H