Subj : problem on the getter of object's property
To   : netscape.public.mozilla.jseng
From : "lyg" <liyg@tech.coretek.com.cn>
Date : Tue Feb 10 2004 04:09 pm

when i get one option's value prperty , why the GetOptionProperty function
is not called?

/*declare option object's property GETTER*/
static JSBool GetOptionProperty (JSContext *cx, JSObject *obj, jsval id,
jsval *vp);

/*declare option object's Selected property SETTER*/
static JSBool SetOptionSelected (JSContext *cx, JSObject *obj, jsval id,
jsval *vp);

/*定义Option类*/
static JSClass OptionClass = {
          "Option",0,
          JS_PropertyStub,JS_PropertyStub, JS_PropertyStub, JS_PropertyStub,
          JS_EnumerateStub, JS_ResolveStub, JS_ConvertStub, JS_FinalizeStub,
    JSCLASS_NO_OPTIONAL_MEMBERS
};

enum  OPTION_PROP_ID {
     OPTION_SYSID = 0,
  OPTION_NAME,
  OPTION_DEFSELECTED,
  OPTION_SELECTED,
  OPTION_VALUE,
  OPTION_TEXT,
};
/*定义Option类的属性数组*/
static JSPropertySpec OptionProperties[] =
{
   {"name",       OPTION_NAME,            JSPROP_ENUMERATE|JSPROP_READONLY,
GetOptionProperty},
   {"defaultSelected",  OPTION_DEFSELECTED,
JSPROP_ENUMERATE|JSPROP_READONLY, GetOptionProperty},
   {"selected",         OPTION_SELECTED,
JSPROP_ENUMERATE,GetOptionProperty,SetOptionSelected},
   {"value",        OPTION_VALUE,
JSPROP_ENUMERATE|JSPROP_READONLY, GetOptionProperty},
   {"text",             OPTION_TEXT,
JSPROP_ENUMERATE|JSPROP_READONLY, GetOptionProperty},
   {0}
};

static JSBool
Option(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
{
  if (0 < argc && 5 > argc)
  {
 char *temp;
    temp = JS_GetStringBytes( JSVAL_TO_STRING(argv[0]) );

 JS_SetProperty(cx, obj, "text",  &argv[0]);
 if (argc > 1)
      JS_SetProperty(cx, obj, "value", &argv[1]);
 if (argc > 2)
      JS_SetProperty(cx, obj, "defaultSelected", &argv[2]);
 if (argc > 3)
      JS_SetProperty(cx, obj, "selected", &argv[3]);

 return JS_TRUE;
  }
  else return JS_FALSE;
}

JSObject *
js_InitOptionClass(JSContext *cx, JSObject *obj)
{
    JSObject *proto;

    proto = JS_InitClass(cx, obj, NULL, &OptionClass, Option, 4,
   NULL, NULL, OptionProperties, NULL);
    if (!proto)
 return NULL;
    OBJ_SET_SLOT(cx, proto, JSSLOT_PRIVATE, JSVAL_FALSE);
    return proto;
}


/*declare option对象属性的GETTER*/
static JSBool GetOptionProperty (JSContext *cx, JSObject *obj, jsval id,
jsval *vp)
{
      int i = 9;
      return JS_TRUE;
}

/*declare option对象Selected属性的SETTER*/
static JSBool SetOptionSelected (JSContext *cx, JSObject *obj, jsval id,
jsval *vp)
{
   int i = 9;
   return JS_TRUE;
}

.