[webkit-help] New to webkit

[Jack Wootton]

Sorry, i thought you meant a C class, not a class used with JSObjects.

On Tue, Aug 4, 2009 at 3:42 AM, LG<lgmagic at gmail.com> wrote:
> Doesnt this create a class??
>
> //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);
>
>
>
> On Mon, Aug 3, 2009 at 6:16 PM, Jack Wootton <jackwootton at gmail.com> wrote:
>>
>> 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
>
>
>
> --
> LG
>



-- 
Regards
Jack