jsb_websocket.cpp

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#include "jsb_websocket.h"
#include "CrossApp.h"
#include "WebSocket.h"
#include "spidermonkey_specifics.h"
#include "ScriptingCore.h"
#include "CrossApp_specifics.hpp"

USING_NS_CC_EXT;

/*
 [Constructor(in DOMString url, in optional DOMString protocols)]
 [Constructor(in DOMString url, in optional DOMString[] protocols)]
 interface WebSocket {
 readonly attribute DOMString url;
 
 // ready state
 const unsigned short CONNECTING = 0;
 const unsigned short OPEN = 1;
 const unsigned short CLOSING = 2;
 const unsigned short CLOSED = 3;
 readonly attribute unsigned short readyState;
 readonly attribute unsigned long bufferedAmount;
 
 // networking
 attribute Function onopen;
 attribute Function onmessage;
 attribute Function onerror;
 attribute Function onclose;
 readonly attribute DOMString protocol;
 void send(in DOMString data);
 void close();
 };
 WebSocket implements EventTarget;
 */

class JSB_WebSocketDelegate : public WebSocket::Delegate
{
public:
    
    virtual void onOpen(WebSocket* ws)
    {
        js_proxy_t * p = jsb_get_native_proxy(ws);
        if (!p) return;
        
        JSContext* cx = ScriptingCore::getInstance()->getGlobalContext();
        JSObject* jsobj = JS_NewObject(cx, NULL, NULL, NULL);
        jsval vp = c_string_to_jsval(cx, "open");
        JS_SetProperty(cx, jsobj, "type", &vp);
        
        jsval args = OBJECT_TO_JSVAL(jsobj);
        
        ScriptingCore::getInstance()->executeFunctionWithOwner(OBJECT_TO_JSVAL(m_pJSDelegate), "onopen", 1, &args);
    }
    
    virtual void onMessage(WebSocket* ws, const WebSocket::Data& data)
    {
        js_proxy_t * p = jsb_get_native_proxy(ws);
        if (!p) return;
        
        JSContext* cx = ScriptingCore::getInstance()->getGlobalContext();
        JSObject* jsobj = JS_NewObject(cx, NULL, NULL, NULL);
        jsval vp = c_string_to_jsval(cx, "message");
        JS_SetProperty(cx, jsobj, "type", &vp);
        
        jsval args = OBJECT_TO_JSVAL(jsobj);
        
        if (data.isBinary)
        {// data is binary
            JSObject* buffer = JS_NewArrayBuffer(cx, data.len);
            uint8_t* bufdata = JS_GetArrayBufferData(buffer);
            memcpy((void*)bufdata, (void*)data.bytes, data.len);
            jsval dataVal = OBJECT_TO_JSVAL(buffer);
            JS_SetProperty(cx, jsobj, "data", &dataVal);
        }
        else
        {// data is string
            jsval dataVal = c_string_to_jsval(cx, data.bytes);
            JS_SetProperty(cx, jsobj, "data", &dataVal);
        }

        ScriptingCore::getInstance()->executeFunctionWithOwner(OBJECT_TO_JSVAL(m_pJSDelegate), "onmessage", 1, &args);
    }
    
    virtual void onClose(WebSocket* ws)
    {
        js_proxy_t * p = jsb_get_native_proxy(ws);
        if (!p) return;
        
        JSContext* cx = ScriptingCore::getInstance()->getGlobalContext();
        JSObject* jsobj = JS_NewObject(cx, NULL, NULL, NULL);
        jsval vp = c_string_to_jsval(cx, "close");
        JS_SetProperty(cx, jsobj, "type", &vp);
        
        jsval args = OBJECT_TO_JSVAL(jsobj);
        ScriptingCore::getInstance()->executeFunctionWithOwner(OBJECT_TO_JSVAL(m_pJSDelegate), "onclose", 1, &args);

        js_proxy_t* jsproxy = jsb_get_js_proxy(p->obj);
        JS_RemoveObjectRoot(cx, &jsproxy->obj);
        jsb_remove_proxy(p, jsproxy);
        CC_SAFE_DELETE(ws);
    }
    
    virtual void onError(WebSocket* ws, const WebSocket::ErrorCode& error)
    {
        js_proxy_t * p = jsb_get_native_proxy(ws);
        if (!p) return;
        
        JSContext* cx = ScriptingCore::getInstance()->getGlobalContext();
        JSObject* jsobj = JS_NewObject(cx, NULL, NULL, NULL);
        jsval vp = c_string_to_jsval(cx, "error");
        JS_SetProperty(cx, jsobj, "type", &vp);
        
        jsval args = OBJECT_TO_JSVAL(jsobj);
        
        ScriptingCore::getInstance()->executeFunctionWithOwner(OBJECT_TO_JSVAL(m_pJSDelegate), "onerror", 1, &args);
    }
    
    void setJSDelegate(JSObject* pJSDelegate)
    {
        m_pJSDelegate = pJSDelegate;
    }
private:
    JSObject* m_pJSDelegate;
};

JSClass  *js_CrossApp_websocket_class;
JSObject *js_CrossApp_websocket_prototype;

void js_CrossApp_WebSocket_finalize(JSFreeOp *fop, JSObject *obj) {
    CCLOG("jsbindings: finalizing JS object %p (WebSocket)", obj);
}

JSBool js_CrossApp_extension_WebSocket_send(JSContext *cx, uint32_t argc, jsval *vp)
{
	jsval *argv = JS_ARGV(cx, vp);
	JSObject *obj = JS_THIS_OBJECT(cx, vp);
	js_proxy_t *proxy = jsb_get_js_proxy(obj);
	WebSocket* cobj = (WebSocket *)(proxy ? proxy->ptr : NULL);
	JSB_PRECONDITION2( cobj, cx, JS_FALSE, "Invalid Native Object");

	if(argc == 1){
        do
        {
            if (JSVAL_IS_STRING(argv[0]))
            {
                std::string data;
                jsval_to_std_string(cx, argv[0], &data);
                cobj->send(data);
                break;
            }

            if (argv[0].isObject())
            {
                uint8_t *bufdata = NULL;
                uint32_t len = 0;
                
                JSObject* jsobj = JSVAL_TO_OBJECT(argv[0]);
                if (JS_IsArrayBufferObject(jsobj))
                {
                    bufdata = JS_GetArrayBufferData(jsobj);
                    len = JS_GetArrayBufferByteLength(jsobj);
                }
                else if (JS_IsArrayBufferViewObject(jsobj))
                {
                    bufdata = (uint8_t*)JS_GetArrayBufferViewData(jsobj);
                    len = JS_GetArrayBufferViewByteLength(jsobj);
                }
                
                if (bufdata && len > 0)
                {
                    cobj->send(bufdata, len);
                    break;
                }
            }
            
            JS_ReportError(cx, "data type to be sent is unsupported.");

        } while (0);
        
		JS_SET_RVAL(cx, vp, JSVAL_VOID);

		return JS_TRUE;
	}
	JS_ReportError(cx, "wrong number of arguments: %d, was expecting %d", argc, 0);
	return JS_TRUE;
}

JSBool js_CrossApp_extension_WebSocket_close(JSContext *cx, uint32_t argc, jsval *vp){
	JSObject *obj = JS_THIS_OBJECT(cx, vp);
	js_proxy_t *proxy = jsb_get_js_proxy(obj);
	WebSocket* cobj = (WebSocket *)(proxy ? proxy->ptr : NULL);
	JSB_PRECONDITION2( cobj, cx, JS_FALSE, "Invalid Native Object");
    
	if(argc == 0){
		cobj->close();
		JS_SET_RVAL(cx, vp, JSVAL_VOID);
		return JS_TRUE;
	}
	JS_ReportError(cx, "wrong number of arguments: %d, was expecting %d", argc, 0);
	return JS_FALSE;
}

JSBool js_CrossApp_extension_WebSocket_constructor(JSContext *cx, uint32_t argc, jsval *vp)
{
    jsval *argv = JS_ARGV(cx, vp);
    
	if (argc == 1 || argc == 2)
    {

		std::string url;
		
		do {
			JSBool ok = jsval_to_std_string(cx, argv[0], &url);
			JSB_PRECONDITION2( ok, cx, JS_FALSE, "Error processing arguments");
		} while (0);
        
		JSObject *obj = JS_NewObject(cx, js_CrossApp_websocket_class, js_CrossApp_websocket_prototype, NULL);
		
        
		extension::WebSocket* cobj = new extension::WebSocket();
        JSB_WebSocketDelegate* delegate = new JSB_WebSocketDelegate();
        delegate->setJSDelegate(obj);
        
        if (argc == 2)
        {
            std::vector<std::string> protocols;
            
            if (JSVAL_IS_STRING(argv[1]))
            {
                std::string protocol;
                do {
                    JSBool ok = jsval_to_std_string(cx, argv[1], &protocol);
                    JSB_PRECONDITION2( ok, cx, JS_FALSE, "Error processing arguments");
                } while (0);
                protocols.push_back(protocol);
            }
            else if (argv[1].isObject())
            {
                JSBool ok = JS_TRUE;
                JSObject* arg2 = JSVAL_TO_OBJECT(argv[1]);
                JSB_PRECONDITION(JS_IsArrayObject( cx, arg2 ),  "Object must be an array");
                
                uint32_t len = 0;
                JS_GetArrayLength(cx, arg2, &len);
                
                for( uint32_t i=0; i< len;i++ )
                {
                    jsval valarg;
                    JS_GetElement(cx, arg2, i, &valarg);
                    std::string protocol;
                    do {
                        ok = jsval_to_std_string(cx, valarg, &protocol);
                        JSB_PRECONDITION2( ok, cx, JS_FALSE, "Error processing arguments");
                    } while (0);
                    
                    protocols.push_back(protocol);
                }
            }
            cobj->init(*delegate, url, &protocols);
        }
        else
        {
            cobj->init(*delegate, url);
        }
        
        
        JS_DefineProperty(cx, obj, "URL", argv[0]
                          , NULL, NULL, JSPROP_ENUMERATE | JSPROP_PERMANENT | JSPROP_READONLY);
        
		//protocol not support yet (always return "")
		JS_DefineProperty(cx, obj, "protocol", c_string_to_jsval(cx, "")
                          , NULL, NULL, JSPROP_ENUMERATE | JSPROP_PERMANENT | JSPROP_READONLY);
        
        // link the native object with the javascript object
		js_proxy_t *p = jsb_new_proxy(cobj, obj);
        JS_AddNamedObjectRoot(cx, &p->obj, "WebSocket");
        
        JS_SET_RVAL(cx, vp, OBJECT_TO_JSVAL(obj));
		return JS_TRUE;
	}
    
	JS_ReportError(cx, "wrong number of arguments: %d, was expecting %d", argc, 0);
	return JS_FALSE;
}

static JSBool js_CrossApp_extension_WebSocket_get_readyState(JSContext *cx, JSHandleObject obj, JSHandleId id, JSMutableHandleValue vp)
{
    JSObject* jsobj = obj.get();
	js_proxy_t *proxy = jsb_get_js_proxy(jsobj);
	WebSocket* cobj = (WebSocket *)(proxy ? proxy->ptr : NULL);
	JSB_PRECONDITION2( cobj, cx, JS_FALSE, "Invalid Native Object");
    
    if (cobj) {
        vp.set(INT_TO_JSVAL((int)cobj->getReadyState()));
        return JS_TRUE;
    } else {
        JS_ReportError(cx, "Error: WebSocket instance is invalid.");
        return JS_FALSE;
    }
}

void register_jsb_websocket(JSContext *cx, JSObject *global) {
    
    js_CrossApp_websocket_class = (JSClass *)calloc(1, sizeof(JSClass));
    js_CrossApp_websocket_class->name = "WebSocket";
    js_CrossApp_websocket_class->addProperty = JS_PropertyStub;
    js_CrossApp_websocket_class->delProperty = JS_PropertyStub;
    js_CrossApp_websocket_class->getProperty = JS_PropertyStub;
    js_CrossApp_websocket_class->setProperty = JS_StrictPropertyStub;
    js_CrossApp_websocket_class->enumerate = JS_EnumerateStub;
    js_CrossApp_websocket_class->resolve = JS_ResolveStub;
    js_CrossApp_websocket_class->convert = JS_ConvertStub;
    js_CrossApp_websocket_class->finalize = js_CrossApp_WebSocket_finalize;
    js_CrossApp_websocket_class->flags = JSCLASS_HAS_RESERVED_SLOTS(2);
    
    static JSPropertySpec properties[] = {
        {"readyState", 0, JSPROP_ENUMERATE | JSPROP_PERMANENT | JSPROP_SHARED, JSOP_WRAPPER(js_CrossApp_extension_WebSocket_get_readyState), NULL},
        {0, 0, 0, 0, 0}
    };
    
    static JSFunctionSpec funcs[] = {
        JS_FN("send",js_CrossApp_extension_WebSocket_send, 1, JSPROP_PERMANENT | JSPROP_ENUMERATE),
		JS_FN("close",js_CrossApp_extension_WebSocket_close, 0, JSPROP_PERMANENT | JSPROP_ENUMERATE),
        JS_FS_END
    };
    
    static JSFunctionSpec st_funcs[] = {
        JS_FS_END
    };
    
    js_CrossApp_websocket_prototype = JS_InitClass(
                                                cx, global,
                                                NULL,
                                                js_CrossApp_websocket_class,
                                                js_CrossApp_extension_WebSocket_constructor, 0, // constructor
                                                properties,
                                                funcs,
                                                NULL, // no static properties
                                                st_funcs);
    
    JSObject* jsclassObj = JSVAL_TO_OBJECT(anonEvaluate(cx, global, "(function () { return WebSocket; })()"));

    JS_DefineProperty(cx, jsclassObj, "CONNECTING", INT_TO_JSVAL((int)WebSocket::kStateConnecting)
                      , NULL, NULL, JSPROP_ENUMERATE | JSPROP_PERMANENT | JSPROP_READONLY);
	JS_DefineProperty(cx, jsclassObj, "OPEN", INT_TO_JSVAL((int)WebSocket::kStateOpen)
                      , NULL, NULL, JSPROP_ENUMERATE | JSPROP_PERMANENT | JSPROP_READONLY);
	JS_DefineProperty(cx, jsclassObj, "CLOSING", INT_TO_JSVAL((int)WebSocket::kStateClosing)
                      , NULL, NULL, JSPROP_ENUMERATE | JSPROP_PERMANENT | JSPROP_READONLY);
	JS_DefineProperty(cx, jsclassObj, "CLOSED", INT_TO_JSVAL((int)WebSocket::kStateClosed)
                      , NULL, NULL, JSPROP_ENUMERATE | JSPROP_PERMANENT | JSPROP_READONLY);
    
    // make the class enumerable in the registered namespace
    JSBool found;
    JS_SetPropertyAttributes(cx, global, "WebSocket", JSPROP_ENUMERATE | JSPROP_READONLY, &found);
}