initial commit, 4.5 stable

platform/android/api/jni_singleton.h

@@ -0,0 +1,104 @@
+/**************************************************************************/
+/*  jni_singleton.h                                                       */
+/**************************************************************************/
+/*                         This file is part of:                          */
+/*                             GODOT ENGINE                               */
+/*                        https://godotengine.org                         */
+/**************************************************************************/
+/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
+/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                  */
+/*                                                                        */
+/* Permission is hereby granted, free of charge, to any person obtaining  */
+/* a copy of this software and associated documentation files (the        */
+/* "Software"), to deal in the Software without restriction, including    */
+/* without limitation the rights to use, copy, modify, merge, publish,    */
+/* distribute, sublicense, and/or sell copies of the Software, and to     */
+/* permit persons to whom the Software is furnished to do so, subject to  */
+/* the following conditions:                                              */
+/*                                                                        */
+/* The above copyright notice and this permission notice shall be         */
+/* included in all copies or substantial portions of the Software.        */
+/*                                                                        */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,        */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF     */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY   */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,   */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE      */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                 */
+/**************************************************************************/
+
+#pragma once
+
+#include "java_class_wrapper.h"
+
+#include "core/config/engine.h"
+#include "core/variant/variant.h"
+
+class JNISingleton : public Object {
+	GDCLASS(JNISingleton, Object);
+
+	struct MethodData {
+		Variant::Type ret_type;
+		Vector<Variant::Type> argtypes;
+	};
+
+	RBMap<StringName, MethodData> method_map;
+	Ref<JavaObject> wrapped_object;
+
+public:
+	virtual Variant callp(const StringName &p_method, const Variant **p_args, int p_argcount, Callable::CallError &r_error) override {
+		if (wrapped_object.is_valid()) {
+			RBMap<StringName, MethodData>::Element *E = method_map.find(p_method);
+
+			// Check the method we're looking for is in the JNISingleton map and that
+			// the arguments match.
+			bool call_error = !E || E->get().argtypes.size() != p_argcount;
+			if (!call_error) {
+				for (int i = 0; i < p_argcount; i++) {
+					if (!Variant::can_convert(p_args[i]->get_type(), E->get().argtypes[i])) {
+						call_error = true;
+						break;
+					}
+				}
+			}
+
+			if (!call_error) {
+				return wrapped_object->callp(p_method, p_args, p_argcount, r_error);
+			}
+		}
+
+		return Object::callp(p_method, p_args, p_argcount, r_error);
+	}
+
+	Ref<JavaObject> get_wrapped_object() const {
+		return wrapped_object;
+	}
+
+	void add_method(const StringName &p_name, const Vector<Variant::Type> &p_args, Variant::Type p_ret_type) {
+		MethodData md;
+		md.argtypes = p_args;
+		md.ret_type = p_ret_type;
+		method_map[p_name] = md;
+	}
+
+	void add_signal(const StringName &p_name, const Vector<Variant::Type> &p_args) {
+		MethodInfo mi;
+		mi.name = p_name;
+		for (int i = 0; i < p_args.size(); i++) {
+			mi.arguments.push_back(PropertyInfo(p_args[i], "arg" + itos(i + 1)));
+		}
+		ADD_SIGNAL(mi);
+	}
+
+	JNISingleton() {}
+
+	JNISingleton(const Ref<JavaObject> &p_wrapped_object) {
+		wrapped_object = p_wrapped_object;
+	}
+
+	~JNISingleton() {
+		method_map.clear();
+		wrapped_object.unref();
+	}
+};