Cocos2d-x使用Javascript开发js绑定C++<代码演示样例>

class IOSiAPDelegate{

public:

virtual ~IOSiAPDelegate() {}

};

class IOSAlipay{

public:

IOSAlipay();

~IOSAlipay();

void iOSProductByIdentifier(std::string &identifier,std::string amount);

IOSiAPDelegate *delegate;

};

#pragma mark-------------------------IOSAlipay的实现代理方法--------------------------------

IOSAlipay::IOSAlipay():delegate(nil){}

IOSAlipay::~IOSAlipay(){}

void
IOSAlipay::iOSProductByIdentifier(std::string &identifier,std::string amount){

NSLog(@"%s",__FUNCTION__);

//将产品id存入缓存中

CCUserDefault* config =
CCUserDefault::sharedUserDefault();//先读

config->setStringForKey ("productIdentifier" , identifier);//存入

config->flush();//刷新一下

config->setStringForKey("amount", amount);//将金额传入

}

#pragma mark-------------------------IOSAlipay的实现代理方法--------------------------------

#ifndef __iAP_JSBinding__IOSiAP_JSB__

#define __iAP_JSBinding__IOSiAP_JSB__

#include "jsapi.h"

void JSB_register_iOSAlipay(JSContext* cx,
JSObject* obj);

#endif /* defined(__iAP_JSBinding__IOSiAP_JSB__) */

#include <stdio.h>

#include "IOSAlipay.h"

#include "ScriptingCore.h"

class IOSAlipay_Bridge :
public IOSiAPDelegate

{

public:

IOSAlipay_Bridge();

~IOSAlipay_Bridge();

IOSAlipay *iap;

JSObject *jsobj;

};

IOSAlipay_Bridge::IOSAlipay_Bridge(){

iap = new
IOSAlipay();

iap->delegate =
this;

}

IOSAlipay_Bridge::~IOSAlipay_Bridge(){

delete iap;

}

static
JSClass *JSB_IOSAlipay_class =
NULL;

static
JSObject *JSB_IOSAlipay_object =
NULL;

#pragma mark-----绑定的析构函数

static
void JSB_IOSAlipay_finalize(JSFreeOp *fop,
JSObject *obj)

{

IOSAlipay_Bridge *bridge = (IOSAlipay_Bridge *)JS_GetPrivate(obj);

JS_SetPrivate(obj,
NULL);

delete bridge;

}

#pragma mark------初始化构造函数

static
JSBool JSB_IOSAlipay_constructor(JSContext *cx,
unsigned argc, JS::Value *vp)

{

if (argc == 0) {

JSObject *jsobj =
JS_NewObject(cx,
JSB_IOSAlipay_class, JSB_IOSAlipay_object,
NULL);

IOSAlipay_Bridge *bridge =
new
IOSAlipay_Bridge();

bridge->jsobj = jsobj;

JS_SetPrivate(jsobj, (void *)bridge);

JS_SET_RVAL(cx, vp,
OBJECT_TO_JSVAL(jsobj));

return JS_TRUE;

}

JS_ReportError(cx,
"Wrong number of arguments: %d, was expecting: %d", argc,
0);

return
JS_FALSE;

}

#pragma mark------ 该方法主要用于处理用于绑定到js中的方法，并接收js传递过来的參数

static
JSBool JSB_IOSiAP_iOSProductByIdentifier(JSContext *cx,
uint32_t argc, jsval *vp)

{

JSB_PRECONDITION2(argc==2, cx,
JS_FALSE,
"Invalid number of arguments");

jsval *argv = JS_ARGV(cx,vp);

JSObject *obj = (JSObject *)JS_THIS_OBJECT(cx, vp);

IOSAlipay_Bridge *bridge = (IOSAlipay_Bridge *)JS_GetPrivate(obj);

// safety check for type

if (JS_FALSE ==
JSVAL_IS_STRING(argv[0])) {

JS_SET_RVAL(cx, vp,
JSVAL_VOID);

return JS_TRUE;

}

JSString *jsIdentifier =
JSVAL_TO_STRING(argv[0]);//获取产品ID

JSStringWrapper wrapper(jsIdentifier);

std::string identifier = wrapper.get();

JSString *jsPrice =
JSVAL_TO_STRING(argv[1]);//获得价格

JSStringWrapper pWrapper(jsPrice);

std::string price = pWrapper.get();

bridge->iap->iOSProductByIdentifier(identifier,price);//传入方法參数

return
JS_TRUE;

}

#pragma mark----------------------创建处理JS绑定对象类

static
void JSB_IOSAlipay_createClass(JSContext *cx,
JSObject* globalObj,
const char* name)

{

JSB_IOSAlipay_class = (JSClass *)calloc(1,
sizeof(JSClass));

//
类型名称为 **IOSAlipay** 正式绑定到 js
由 js
调用的名称

JSB_IOSAlipay_class->name = name;

JSB_IOSAlipay_class->addProperty =
JS_PropertyStub;

JSB_IOSAlipay_class->delProperty =
JS_PropertyStub;//JS_DeletePropertyStub;

JSB_IOSAlipay_class->getProperty =
JS_PropertyStub;

JSB_IOSAlipay_class->setProperty =
JS_StrictPropertyStub;

JSB_IOSAlipay_class->enumerate =
JS_EnumerateStub;

JSB_IOSAlipay_class->resolve =
JS_ResolveStub;

JSB_IOSAlipay_class->convert =
JS_ConvertStub;

JSB_IOSAlipay_class->finalize =
JSB_IOSAlipay_finalize;

JSB_IOSAlipay_class->flags =
JSCLASS_HAS_PRIVATE;

// JSCLASS_HAS_PRIVATE; JSCLASS_HAS_RESERVED_SLOTS(2)

// no property for this class

static
JSPropertySpec properties[] = {

{0,
0, 0,
0, 0}

};

//
设定绑定函数。函数名 "iOSProductByIdentifier"，绑定函数 "JSB_IOSiAP_iOSProductByIdentifier"

//
后面能够加入其他函数绑定，假设须要，之后以 "JS_FS_END" 结尾

// define member function

static
JSFunctionSpec funcs[] = {

JS_FN("iOSProductByIdentifier",
JSB_IOSiAP_iOSProductByIdentifier,1,
JSPROP_PERMANENT | JSPROP_ENUMERATE),

JS_FS_END

};

//
这里定义而且绑定了静态函数(static)，包含方法名 "create"和相应的绑定实现

static
JSFunctionSpec st_funcs[] = {

JS_FS_END

};

JSB_IOSAlipay_object =
JS_InitClass(

cx,globalObj,

NULL,

JSB_IOSAlipay_class,

JSB_IOSAlipay_constructor,0,//这里绑定的是构造函数的实现。也就是用js-new操作符创建的对象

properties,

funcs,//
函数绑定

NULL,// no static properties

st_funcs);//
静态函数绑定

}

#pragma mark ----注冊绑定方法
让JS 可以找到
全部类

/**

* 该方法主要在
本程序中的 GameEnter.cpp中进行集体绑定

* sc->addRegisterCallback(JSB_register_iOSiAP);

*

* @param cx
上下文

* @param obj
对象

* @return
返回值

*/

// extern init function

void JSB_register_iOSAlipay(JSContext* cx,
JSObject* obj)

{

// define name space

JSObject *myBinding =
JS_NewObject(cx, NULL,
NULL, NULL);

js::RootedValue myBindingVal(cx);

myBindingVal =
OBJECT_TO_JSVAL(myBinding);

JS_SetProperty(cx, obj,
"MyBinding", (jsval *)&myBindingVal);

// register class

JSB_IOSAlipay_createClass(cx, myBinding,
"IOSAlipay");

}