[webkit-help] New to webkit

[Jack Wootton]

You say you'e created a class, but I can't see a class in your code.

On Mon, Aug 3, 2009 at 1:36 PM, LG<lgmagic at gmail.com> wrote:
> But is the location to place the file and the source code looks fine??
>
> On Mon, Aug 3, 2009 at 6:00 PM, Jack Wootton <jackwootton at gmail.com> wrote:
>>
>> I have only modified an old s60 branch of webkit so can't help you on
>> where to put the files and compile it, since this is done differently
>> on s60.  I'm sure someone who knows more can help with this (I would
>> be interested too). However in the list of errors you get you don't
>> have JSObjectCallAsFunction or JSObjectSetProperty. Presumably these
>> are not undefined references?  I had a similar problem on an old S60
>> branch, I posted about it on Forum Nokia here
>> http://discussion.forum.nokia.com/forum/showthread.php?t=172429 but
>> received no help (but since you're using SquirrelFish I doubt it's the
>> same issue).
>>
>> On Mon, Aug 3, 2009 at 12:56 PM, LG<lgmagic at gmail.com> wrote:
>> > Hi Jack,
>> >
>> > thanks for the info,
>> >
>> > the problem here is i tried this and didnot work
>> > i ll elaborate on what i have tried
>> >
>> > 1. i have created a class in JavascriptCore/API
>> >
>> > test.cpp
>> >
>> > #include "UnusedParam.h"
>> > #include <JavaScriptCore/JavaScript.h>
>> > #include <assert.h>
>> > #include <math.h>
>> > #include <setjmp.h>
>> >
>> >
>> > static JSGlobalContextRef context = 0;
>> > JSValueRef v;
>> > JSValueRef exception;
>> > JSStringRef functionBody;
>> > JSObjectRef function;
>> >
>> > int main()
>> > {
>> >
>> >     //create a class with a name
>> >     JSStringRef calObjectName =
>> > JSStringCreateWithUTF8CString("calendar");
>> >
>> >     //create a class definition
>> >     JSClassDefinition calObjectDef;
>> >     calObjectDef.version = 1;
>> >     //calObjectDef.className = calObjectName
>> >
>> >
>> >     //create a context
>> >     //context = JSGlobalContextCreate(NULL);
>> >     //assert(JSValueIsObject(context, globalObject));
>> >
>> >     //create the class
>> >     JSClassRef globalObjectClass = JSClassCreate(&calObjectDef);
>> >
>> >     //create a global context
>> >     JSGlobalContextRef context =
>> > JSGlobalContextCreate(globalObjectClass);
>> >         JSObjectRef globalObject = JSContextGetGlobalObject(context);
>> >
>> >     //make the object
>> >     JSObjectRef calObject = JSObjectMake(context, globalObjectClass,
>> > NULL);
>> >
>> >
>> >     //set properties
>> >     JSObjectSetProperty(context, globalObject, calObjectName, calObject,
>> > kJSPropertyAttributeNone, NULL);
>> >
>> >
>> >     exception = NULL;
>> >     v = NULL;
>> >
>> >     JSStringRef getCal = JSStringCreateWithUTF8CString("getCalendars");
>> >     functionBody = JSStringCreateWithUTF8CString("return NULL;");
>> >     function = JSObjectMakeFunction(context, getCal,0, NULL,
>> > functionBody,
>> > NULL, 1, &exception);
>> >     assert(function && !exception);
>> >     JSValueRef arguments[] = { JSValueMakeNumber(context, 2) };
>> >     v = JSObjectCallAsFunction(context, function, NULL, 1, arguments,
>> > &exception);
>> >     JSStringRelease(getCal);
>> >     JSStringRelease(functionBody);
>> >
>> >     return 1;
>> > }
>> >
>> >
>> > 2. i added this to the make file and i get the following errors
>> >
>> > undefined reference to `JSStringCreateWithUTF8CString`
>> > undefined reference to `JSClassCreate`
>> > undefined reference to `JSGlobalContextCreate`
>> >
>> > etc
>> >
>> > i am not sure where to put the file and compile
>> > please guide me through the approach
>> >
>> >
>> >
>> >
>> > On Mon, Aug 3, 2009 at 2:29 PM, Jack Wootton <jackwootton at gmail.com>
>> > wrote:
>> >>
>> >> Hello,
>> >>
>> >> If you mean add a new JavaScript object, then here is a reply I wrote
>> >> some time ago (copied and pasted).
>> >>
>> >> Here is the API:
>> >>
>> >>
>> >>
>> >> http://gemma.apple.com/documentation/Carbon/Reference/WebKit_JavaScriptCore_Ref/index.html#//apple_ref/doc/framework/javascriptcore_fw
>> >>
>> >> If this is what you wish to do, then the following is a rough guide of
>> >> what you need to do:
>> >>
>> >> 1. Create an empty class definition, you can create an empty class
>> >> definition using kJSClassDefinitionEmpty.
>> >> 2. Use the class definition with the JSCoreAPI method "JSClassCreate"
>> >> to create your class.
>> >> 3. Use your new class with JSObjectMake to create your new JSObject
>> >> (this will be your widget object).
>> >> 4  Use JSObjectSetProperty to add your new JSObject as a property of
>> >> the Window object.
>> >>
>> >> It maybe useful to look at the following files in the
>> >> JavaScriptCore (Although, personally I didn't find them particularly
>> >> easy to understand.)
>> >>
>> >> JavaScriptCore\API\testapi.c
>> >> testapi.js
>> >>
>> >>
>> >> There are also some example programs that do what you want to do, only
>> >> with different objects.
>> >>
>> >> JSPong: http://developer.apple.com/SampleCode/JSPong/index.html
>> >>
>> >> JSInterpreter:
>> >> http://developer.apple.com/samplecode/JSInterpreter/index.html
>> >>
>> >> More programs can be found here:
>> >>
>> >> http://developer.apple.com/SampleCode/Cocoa/idxInternetWeb-date.html
>> >>
>> >> On Mon, Aug 3, 2009 at 5:34 AM, LG<lgmagic at gmail.com> wrote:
>> >> > Hi all,
>> >> >
>> >> > i am new to webkit and i need to add an new object/api to javascript
>> >> > core
>> >> > can someone share and example and tell me how to compile it in webkit
>> >> >
>> >> > anyhelp would be useful
>> >> > thanks a lot
>> >> >
>> >> >
>> >> > --
>> >> > Ganesh
>> >> >
>> >> > _______________________________________________
>> >> > webkit-help mailing list
>> >> > webkit-help at lists.webkit.org
>> >> > http://lists.webkit.org/mailman/listinfo.cgi/webkit-help
>> >> >
>> >> >
>> >>
>> >>
>> >>
>> >> --
>> >> Regards
>> >> Jack
>> >
>> >
>> >
>> > --
>> > LG
>> >
>>
>>
>>
>> --
>> Regards
>> Jack
>
>
>
> --
> LG
>



-- 
Regards
Jack