cocos-enhance-kit/cocos2d-x/cocos/scripting/js-bindings/jswrapper/v8/Class.hpp

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 Copyright (c) 2016 Chukong Technologies Inc.
 Copyright (c) 2017-2018 Xiamen Yaji Software Co., Ltd.

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#pragma once

#include "../config.hpp"

#if SCRIPT_ENGINE_TYPE == SCRIPT_ENGINE_V8

#include "Base.h"

namespace se {

	class Object;

    /**
     * se::Class represents a definition of how to create a native binding object.
     */
	class Class final
    {
    public:
        /**
         *  @brief Creates a class used for creating relevant native binding objects.
         *  @param[in] className A null-terminated UTF8 string containing the class's name.
         *  @param[in] obj The object that current class proto object attaches to. Should not be nullptr.
         *  @param[in] parentProto The parent proto object that current class inherits from. Passing nullptr means a new class has no parent.
         *  @param[in] ctor A callback to invoke when your constructor is used in a 'new' expression. Pass nullptr to use the default object constructor.
         *  @return A class instance used for creating relevant native binding objects.
         *  @note Don't need to delete the pointer return by this method, it's managed internally.
         */
        static Class* create(const std::string& className, Object* obj, Object* parentProto, v8::FunctionCallback ctor);

        /**
         *  @brief Defines a member function with a callback. Each objects created by class will have this function property.
         *  @param[in] name A null-terminated UTF8 string containing the function name.
         *  @param[in] func A callback to invoke when the property is called as a function.
         *  @return true if succeed, otherwise false.
         */
        bool defineFunction(const char *name, v8::FunctionCallback func);

        /**
         *  @brief Defines a property with accessor callbacks. Each objects created by class will have this property.
         *  @param[in] name A null-terminated UTF8 string containing the property name.
         *  @param[in] getter A callback to invoke when the property is read.
         *  @param[in] setter A callback to invoke when the property is set.
         *  @return true if succeed, otherwise false.
         */
        bool defineProperty(const char *name, v8::AccessorNameGetterCallback getter, v8::AccessorNameSetterCallback setter);

        /**
         *  @brief Defines a static function with a callback. Only JavaScript constructor object will have this function.
         *  @param[in] name A null-terminated UTF8 string containing the function name.
         *  @param[in] func A callback to invoke when the constructor's property is called as a function.
         *  @return true if succeed, otherwise false.
         */
        bool defineStaticFunction(const char *name, v8::FunctionCallback func);

        /**
         *  @brief Defines a static property with accessor callbacks. Only JavaScript constructor object will have this property.
         *  @param[in] name A null-terminated UTF8 string containing the property name.
         *  @param[in] getter A callback to invoke when the constructor's property is read.
         *  @param[in] setter A callback to invoke when the constructor's property is set.
         *  @return true if succeed, otherwise false.
         */
        bool defineStaticProperty(const char *name, v8::AccessorNameGetterCallback getter, v8::AccessorNameSetterCallback setter);

        /**
         *  @brief Defines the finalize function with a callback.
         *  @param[in] func The callback to invoke when a JavaScript object is garbage collected.
         *  @return true if succeed, otherwise false.
         */
        bool defineFinalizeFunction(V8FinalizeFunc func);

        /**
         *  @brief Installs class to JavaScript VM.
         *  @return true if succeed, otherwise false.
         *  @note After this method, an object could be created by `var foo = new Foo();`.
         */
        bool install();

        /**
         *  @brief Gets the proto object of this class.
         *  @return The proto object of this class.
         *  @note Don't need to be released in user code.
         */
        Object* getProto() const;

        /**
         *  @brief Gets the class name.
         *  @return The class name.
         */
        const char* getName() const { return _name.c_str(); }

        // Private API used in wrapper
        V8FinalizeFunc _getFinalizeFunction() const;
	private:
        Class();
        ~Class();

        void setCreateProto(bool createProto);

        bool init(const std::string& clsName, Object* parent, Object* parentProto, v8::FunctionCallback ctor);
        void destroy();

        static void cleanup();
//        static v8::Local<v8::Object> _createJSObject(const std::string &clsName, Class** outCls);
        static v8::Local<v8::Object> _createJSObjectWithClass(Class* cls);
        static void setIsolate(v8::Isolate* isolate);
		
		std::string _name;
		Object* _parent;
        Object* _parentProto;
        Object* _proto;

        v8::FunctionCallback _ctor;
		v8::UniquePersistent<v8::FunctionTemplate> _ctorTemplate;
        V8FinalizeFunc _finalizeFunc;
        bool _createProto;

        friend class ScriptEngine;
        friend class Object;
	};

} // namespace se {

#endif // #if SCRIPT_ENGINE_TYPE == SCRIPT_ENGINE_V8