[webkit-help] New to webkit

[Jack Wootton]

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