mgjs_collection.cpp

monqueror一个很具有参考价值的源玛

#include "mgjs_main.h"

#include <../misc/htmlattrs.h>		
#include <html_formimpl.h>
#include <htmltags.h>

#define DEBUG_BY_XHTANG 0

static JSBool GetHTMLCollectionProperty(JSContext *cx, JSObject *obj, jsval id, jsval *vp);
static JSBool SetHTMLCollectionProperty(JSContext *cx, JSObject *obj, jsval id, jsval *vp);
static JSBool myjsHTMLCollection_Item(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval);
static JSBool myjsHTMLCollection_NamedItem(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval);

enum HTMLCollection_slots {MDHTMLCOLLECTION_LENGTH};

static JSBool GetHTMLCollectionProperty(JSContext *cx, JSObject *obj, jsval id, jsval *vp)
{
	myJSCollectionPrivate *mCollectionPrivate=(myJSCollectionPrivate *)JS_GetPrivate(cx,obj);
	long int len;
	HTMLElementImpl *nImpl;
	nImpl=(HTMLElementImpl*)mCollectionPrivate->CurNode;
	if(!nImpl)return JS_FALSE;
#if 0//DEBUG_BY_XHTANG	
	QString qs;	char s[256],t[64];
	qs=(nImpl->nodeName()).string();
	strcpy(s,(const char*)qs);strcat(s,"  ");
	fprintf(stderr,"Collection.cpp: nodeName is %s.\n",s);
#endif
	len=HTMLCollectionImpl_length(nImpl,mCollectionPrivate->Type);
	if (JSVAL_IS_INT(id)) {
        switch (JSVAL_TO_INT(id)) {
			case MDHTMLCOLLECTION_LENGTH:
				*vp=INT_TO_JSVAL(len);
				break;
		}
	}
	return JS_TRUE;
}
static JSBool SetHTMLCollectionProperty(JSContext *cx, JSObject *obj, jsval id, jsval *vp)
{
	if (JSVAL_IS_INT(id)) {
		switch (JSVAL_TO_INT(id)) {
			}
	}
	return JS_TRUE;
}

static JSBool myjsHTMLCollection_Item(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
{
	myJSCollectionPrivate *mCollectionPrivate=(myJSCollectionPrivate *)JS_GetPrivate(cx,obj);
//	JSObject *eobj;
	HTMLElementImpl *nImpl;	
	long int index;
//	HTMLCollectionImpl *hCollectionImpl;
	if(argc<1)return JS_FALSE;
    index = JSVAL_TO_INT(argv[0]);
	if(index<0)return JS_FALSE;
	nImpl=(HTMLElementImpl*)mCollectionPrivate->CurNode;
	if(!nImpl)return JS_FALSE;
#if 0//DEBUG_BY_XHTANG	

	JSObject *elementObj;
	DOMString ds;
	char s[1024],cs[256],t[64];
	NodeListImpl *lImpl;
	NodeImpl* e;int len,i;
	QString qs,qs1;
	if(!nImpl){
		sprintf(s,"nImpl:%d is Null.",index);
		*rval=STRING_TO_JSVAL (JS_NewStringCopyZ (cx,s));
		return JS_TRUE;}
	qs=(nImpl->nodeName()).string();
	lImpl=nImpl->childNodes();
	len=lImpl?lImpl->length():-1;
	sprintf(s,"\n======NodeName:%s len:%d The child is:\n",(const char*)qs,len);
  
	HTMLElementImpl *child = (HTMLElementImpl *)(nImpl->firstChild());
	i=0;
    while(child != 0) {
		sprintf(t,"%d:",++i);strcat(s,t);
		qs1=(child->nodeName()).string();
		strcat(s,(const char*)qs1);strcat(s," ");
		child = (HTMLElementImpl *)(child->nextSibling());}
	
	len=HTMLCollectionImpl_length(nImpl,DOC_ALL);
	sprintf(cs,"DOC_All Len:%d",len);strcat(s,cs);
	len=HTMLCollectionImpl_length(nImpl,FORM_ELEMENTS);
	sprintf(cs,"FORM_ELEMENTS Len:%d",len);strcat(s,cs);
	len=HTMLCollectionImpl_length(nImpl,SELECT_OPTIONS);
	sprintf(t,"SELECT_OPTIONS:%d",len);strcat(s,t);
	fprintf(stderr,"%s",s);
	fprintf(stderr,"Collection Type:%d\n",mCollectionPrivate->Type);
	
#endif
	NodeImpl* CurNode;
	CurNode=HTMLCollectionImpl_item(nImpl,index,mCollectionPrivate->Type);
	if(!CurNode)return JS_FALSE;
#if 0//DEBUG_BY_XHTANG	
	ElementImpl *eImpl=(ElementImpl*)(CurNode);
	qs=(eImpl->nodeName()).string();
	strcpy(s,(const char*)qs);
	fprintf(stderr,"Collection.cpp CurNodeName:%s eImpl.id:%d\n",s,eImpl->id());
#endif	
	return HTML_NewObjectByElementCommon(cx,obj,JS_GetPrototype(cx,obj),0,(ElementImpl*)CurNode,rval);
		
}
static JSBool myjsHTMLCollection_NamedItem(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
{
	myJSCollectionPrivate *mCollectionPrivate=(myJSCollectionPrivate *)JS_GetPrivate(cx,obj);
	HTMLElementImpl *nImpl;	
	NodeImpl* CurNode;
	int type;
	DOMString elementName;
	JSString *jss;
	if(argc<1)return JS_FALSE;
	if (!(jss = JS_ValueToString (cx, argv[0])))return JS_FALSE;
  	elementName = (const char*)JS_GetStringBytes (jss);
	nImpl=(HTMLElementImpl*)mCollectionPrivate->CurNode;
	if(!nImpl)return JS_FALSE;
	type=mCollectionPrivate->Type;
	CurNode=HTMLCollectionImpl_namedItem(nImpl,elementName,type);
	if(!CurNode)return JS_FALSE;
	return HTML_NewObjectByElementCommon(cx,obj,JS_GetPrototype(cx,obj),0,(ElementImpl*)CurNode,rval);
}

static JSPropertySpec HTMLCollectionProperties[] =
{
  {"length",    MDHTMLCOLLECTION_LENGTH,    JSPROP_ENUMERATE | JSPROP_READONLY},
  {0}
};
static JSClass HTMLCollectionClass = {
  "HTMLCollection", 
  JSCLASS_HAS_PRIVATE,
  JS_PropertyStub,
  JS_PropertyStub,
  GetHTMLCollectionProperty,
  SetHTMLCollectionProperty,
  JS_EnumerateStub, JS_ResolveStub, JS_ConvertStub, JS_FinalizeStub 
};

static JSFunctionSpec HTMLCollectionMethods[] = 
{
  {"item",          myjsHTMLCollection_Item,     1},
  {"namedItem",     myjsHTMLCollection_NamedItem,     1},
  {0}
};

JSObject* InitHTMLCollectionClass(JSContext *cx,JSObject *globalObj,JSObject *proto)
{
	JSObject *Obj;
	Obj = JS_DefineObject (cx,globalObj, "HtmlCollection", &HTMLCollectionClass,proto,JSPROP_ENUMERATE);
    JS_DefineProperties (cx,Obj,HTMLCollectionProperties);
    JS_DefineFunctions (cx,Obj,HTMLCollectionMethods);
	return Obj;
}		

JSObject* NewScriptHTMLCollectionElement(JSContext *cx,JSObject *proto,JSObject *parent,ElementImpl *eImpl,int Type)
{
#if DEBUG_BY_XHTANG
	fprintf(stderr,"proto:%p parent:%p eImpl:%p Type:%d\n",proto,parent,eImpl,Type);		
#endif		
	JSObject *obj;
	JSObject *global = JS_GetGlobalObject(cx);
	jsval vp;
	if ((JS_TRUE == JS_LookupProperty(cx, global, "HtmlCollection", &vp) && JSVAL_IS_OBJECT(vp)))
		obj=JS_NewObject(cx,&HTMLCollectionClass,JSVAL_TO_OBJECT(vp),NULL);
	else
		obj=InitHTMLCollectionClass(cx,JS_GetParent(cx,proto),proto);
	myJSCollectionPrivate *mCollectionPrivate=new myJSCollectionPrivate;
//	myJSCollectionPrivate *protoCollectionPrivate=(myJSCollectionPrivate *)JS_GetPrivate(cx,proto);
	mCollectionPrivate->CurNode=(ElementImpl*)eImpl;
	mCollectionPrivate->Type=Type;
	JS_SetPrivate(cx,obj,(void*)mCollectionPrivate);
	
	return obj;
}