Sorry,some corrections: I am using kJSClassDefinitionEmpty to help create the JSClassDefinition.
Also, myObjectDef.myObjectName; should be myObjectDef.className = myObjectName; On Fri, May 15, 2009 at 3:35 PM, Jack Wootton <[email protected]> wrote: > I have had a look at the JavaScriptCore Framework Reference > (http://developer.apple.com/documentation/Carbon/Reference/WebKit_JavaScriptCore_Ref/index.html#//apple_ref/doc/framework/javascriptcore_fw). > My understanding now is that to add a custo object, the following > steps would need to be taken: > > 1. Create a name for the new object, for example: > > JSStringRef myObjectName = JSStringCreateWithUTF8CString("foo"); > > 2. Create the class definition structure; > > JSClassDefinition myObjectDef; > myObjectDef.version = 1; > myObjectDef.myObjectName; > > 3. Create the class. > > JSClassRef globalObjectClass = JSClassCreate(&myObjectDef); > > 4. Create the context: > > JSGlobalContextRef context = JSGlobalContextCreate(globalObjectClass); > > 5. Make the object: > > JSObjectRef JSObjectMake(context, globalObjectClass, NULL) > > > However I have the following questions. > > 1. Who should share the context? Is a single context used for a > single webpage / frame? > 2. Where do I define the class that will actually handle the > implementation of any methods on my new object? > 3. The object has been made using "JSObjectMake", but how is it added to > WebKit? > > Many thanks, > Jack > > 2009/5/15 browserwk <[email protected]>: >> Maybe you need check out the JavaScriptCore/API directory. >> >> Following file is need carefully. >> >> JavaScriptCore/API/tests/testapi.c >> >> Thanks. >> >> -Xiong >> >> -------- Original Message -------- >> Subject: Re: [webkit-dev] KJS::JSObject question >> From: Jack Wootton <[email protected]> >> To: Darin Adler <[email protected]> >> Cc: "[email protected]" <[email protected]> >> Date: 2009年05月15日 星期五 17时40分40秒 >> >>> OK. It seems I was on completely the wrong track. I was under the >>> impression WebKit didn't have public and non public APIs as such, at >>> least I haven't read anything to this effect. Where can I read what >>> the published Vs non published APIs are? Or which ones I should use >>> and which ones I shouldn't? >>> >>> On Thu, May 14, 2009 at 6:02 PM, Darin Adler <[email protected]> wrote: >>>> On May 14, 2009, at 8:03 AM, Jack Wootton wrote: >>>> >>>>> My question: 營 do not understand how JSObject can be used to allow for >>>>> the JavaScript syntax of : myNewJSObject.someObject.hello(). >>>> My first comment is that you should not be using JSObject directly. The >>>> right way to do this is to use the C-based public API of JavaScriptCore, >>>> which includes types like JSObjectRef. The JSObject internal interface is >>>> constantly being changed and not suitable for use outside the WebKit >>>> project. >>>> >>>> In JavaScript, if you want: >>>> >>>> 燼.b.c() >>>> >>>> to work, then the object "a" need a property "b" with a property "c" that >>>> is >>>> callable as a function. At each level, the object can just be a general >>>> purpose object with a property attached, which can be set up with functions >>>> like JSObjectSetProperty, or the property can come from the object抯 >>>> prototype, or the property can be 揵uilt in� to the object, which can by >>>> done with JSClassCreate supplying a JSObjectGetPropertyCallback function. >>>> >>>> When it comes to the value of the property named "c", to make something >>>> callable as a function, you can either use an actual compiled JavaScript >>>> function, one of the built in JavaScript functions such as >>>> String.prototype.toLowerCase or you can make an object that acts like a >>>> function using JSClassCreate supplying a JSObjectCallAsFunctionCallback >>>> function. >>>> >>>> -- Darin >>>> >>>> >>> >>> >>> >> > > > > -- > Regards > Jack > -- Regards Jack _______________________________________________ webkit-dev mailing list [email protected] http://lists.webkit.org/mailman/listinfo.cgi/webkit-dev
