Thread: [Pyobjc-dev] Loading Classes from Private Frameworks with objc.lookUpClass

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pyobjc-dev

[Pyobjc-dev] Loading Classes from Private Frameworks with objc.lookUpClass

From: Eric F. <er...@di...> - 2015-05-06 07:09:02

Hi Folks,

I feel like I’ve been banging my head against a wall and looking for a couple of pointers.

I have seen examples of writing mail.app plugins where the private class is loaded using objc.lookUpClass.  For some reason I seem completely unable to get this to work.

I have tested from the command line using a variety of class names and any of the classes from public frameworks seem to load just fine (i.e NSOjbect etc).  When I try to load the MVMailBundle class using:

objc.lookUpClass('MVMailBundle’)

I receive an error: objc.nosuchclass_error: MVMailBundle

System details are: Mac OSX 10.10.2
Python: 2.7
PyObjC: PyObjC 3.0.4 

Is there somewhere that I need to switch on or enable the support for loading classes from private frameworks?

Any guidance would be really appreciated.

Cheers,
Eric.

Re: [Pyobjc-dev] Loading Classes from Private Frameworks with objc.lookUpClass

From: Robert K. <rob...@gm...> - 2015-05-06 08:27:09

Hey Eric,

I think that MVMailBundle is implemented by the Mail application itself, so you can only look it up within that context (ie running as a plug-in inside Mail). It's not clear to me if you're doing that.

FWIW, my Mail plug-in actually uses `objc.runtime.MVMailBundle` instead of using `objc.lookUpClass()` for that particular class (can't remember why; at some point I switched from using lookUpClass() to using objc.runtime), although I do look up other (Mail-only) classes using it.

– robert

Eric Fernance <er...@di...> wrote on Wed May 06 2015 at 09:13:25:
> Hi Folks,
> 
> I feel like I’ve been banging my head against a wall and looking for a couple of pointers.
> 
> I have seen examples of writing mail.app plugins where the private class is loaded using objc.lookUpClass.  For some reason I seem completely unable to get this to work.
> 
> I have tested from the command line using a variety of class names and any of the classes from public frameworks seem to load just fine (i.e NSOjbect etc).  When I try to load the MVMailBundle class using:
> 
> objc.lookUpClass('MVMailBundle’)
> 
> I receive an error: objc.nosuchclass_error: MVMailBundle
> 
> System details are: Mac OSX 10.10.2
> Python: 2.7
> PyObjC: PyObjC 3.0.4 
> 
> Is there somewhere that I need to switch on or enable the support for loading classes from private frameworks?
> 
> Any guidance would be really appreciated.
> 
> Cheers,
> Eric.
> 
> ------------------------------------------------------------------------------
> One dashboard for servers and applications across Physical-Virtual-Cloud 
> Widest out-of-the-box monitoring support with 50+ applications
> Performance metrics, stats and reports that give you Actionable Insights
> Deep dive visibility with transaction tracing using APM Insight.
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Re: [Pyobjc-dev] Loading Classes from Private Frameworks with objc.lookUpClass

From: Ronald O. <ron...@ma...> - 2015-05-06 11:06:17

> On 06 May 2015, at 08:11, Eric Fernance <er...@di...> wrote:
> 
> Hi Folks,
> 
> I feel like I’ve been banging my head against a wall and looking for a couple of pointers.
> 
> I have seen examples of writing mail.app plugins where the private class is loaded using objc.lookUpClass.  For some reason I seem completely unable to get this to work.
> 
> I have tested from the command line using a variety of class names and any of the classes from public frameworks seem to load just fine (i.e NSOjbect etc).  When I try to load the MVMailBundle class using:
> 
> objc.lookUpClass('MVMailBundle’)
> 
> I receive an error: objc.nosuchclass_error: MVMailBundle
> 
> System details are: Mac OSX 10.10.2
> Python: 2.7
> PyObjC: PyObjC 3.0.4 
> 
> Is there somewhere that I need to switch on or enable the support for loading classes from private frameworks?

You need to ensure that the private framework is loaded, otherwise the class won’t be available.

Ronald
> 
> Any guidance would be really appreciated.
> 
> Cheers,
> Eric.
> 
> ------------------------------------------------------------------------------
> One dashboard for servers and applications across Physical-Virtual-Cloud 
> Widest out-of-the-box monitoring support with 50+ applications
> Performance metrics, stats and reports that give you Actionable Insights
> Deep dive visibility with transaction tracing using APM Insight.
> http://ad.doubleclick.net/ddm/clk/290420510;117567292;y_______________________________________________
> Pyobjc-dev mailing list
> Pyo...@li...
> https://lists.sourceforge.net/lists/listinfo/pyobjc-dev

Re: [Pyobjc-dev] Loading Classes from Private Frameworks with objc.lookUpClass

From: Ronald O. <ron...@ma...> - 2015-05-06 11:07:13

> On 06 May 2015, at 10:06, Robert Klep <rob...@gm...> wrote:
> 
> Hey Eric,
> 
> I think that MVMailBundle is implemented by the Mail application itself, so you can only look it up within that context (ie running as a plug-in inside Mail). It's not clear to me if you're doing that.
> 
> FWIW, my Mail plug-in actually uses `objc.runtime.MVMailBundle` instead of using `objc.lookUpClass()` for that particular class (can't remember why; at some point I switched from using lookUpClass() to using objc.runtime), although I do look up other (Mail-only) classes using it.

objc.runtime is deprecated, and IIRC I removed it in PyObjC 3.0

Ronald

> 
> – robert
> 
> Eric Fernance <er...@di... <mailto:er...@di...>> wrote on Wed May 06 2015 at 09:13:25:
>> Hi Folks,
>> 
>> I feel like I’ve been banging my head against a wall and looking for a couple of pointers.
>> 
>> I have seen examples of writing mail.app plugins where the private class is loaded using objc.lookUpClass.  For some reason I seem completely unable to get this to work.
>> 
>> I have tested from the command line using a variety of class names and any of the classes from public frameworks seem to load just fine (i.e NSOjbect etc).  When I try to load the MVMailBundle class using:
>> 
>> objc.lookUpClass('MVMailBundle’)
>> 
>> I receive an error: objc.nosuchclass_error: MVMailBundle
>> 
>> System details are: Mac OSX 10.10.2
>> Python: 2.7
>> PyObjC: PyObjC 3.0.4 
>> 
>> Is there somewhere that I need to switch on or enable the support for loading classes from private frameworks?
>> 
>> Any guidance would be really appreciated.
>> 
>> Cheers,
>> Eric.
>> 
>> ------------------------------------------------------------------------------
>> One dashboard for servers and applications across Physical-Virtual-Cloud 
>> Widest out-of-the-box monitoring support with 50+ applications
>> Performance metrics, stats and reports that give you Actionable Insights
>> Deep dive visibility with transaction tracing using APM Insight.
>> http://ad.doubleclick.net/ddm/clk/290420510;117567292;y_______________________________________________ <http://ad.doubleclick.net/ddm/clk/290420510;117567292;y_______________________________________________>
>> Pyobjc-dev mailing list
>> Pyo...@li...
>> https://lists.sourceforge.net/lists/listinfo/pyobjc-dev
> 
> ------------------------------------------------------------------------------
> One dashboard for servers and applications across Physical-Virtual-Cloud 
> Widest out-of-the-box monitoring support with 50+ applications
> Performance metrics, stats and reports that give you Actionable Insights
> Deep dive visibility with transaction tracing using APM Insight.
> http://ad.doubleclick.net/ddm/clk/290420510;117567292;y_______________________________________________
> Pyobjc-dev mailing list
> Pyo...@li...
> https://lists.sourceforge.net/lists/listinfo/pyobjc-dev

Re: [Pyobjc-dev] Loading Classes from Private Frameworks with objc.lookUpClass

From: Robert K. <rob...@gm...> - 2015-05-06 12:28:22

Ronald Oussoren <ron...@ma...> wrote on Wed May 06 2015 at 13:07:26:
>> FWIW, my Mail plug-in actually uses `objc.runtime.MVMailBundle` instead of using `objc.lookUpClass()` for that particular class (can't remember why; at some point I switched from using lookUpClass() to using objc.runtime), although I do look up other (Mail-only) classes using it.
> 
> objc.runtime is deprecated, and IIRC I removed it in PyObjC 3.0


Good to know, thanks.

– robert

Re: [Pyobjc-dev] Loading Classes from Private Frameworks with objc.lookUpClass

From: Georg S. <geo...@gm...> - 2015-05-06 19:10:23

Hi

I usually use NSClassFromString().

Georg

> Am 06.05.2015 um 12:42 schrieb Ronald Oussoren <ron...@ma...>:
> 
> 
>> On 06 May 2015, at 10:06, Robert Klep <rob...@gm...> wrote:
>> 
>> Hey Eric,
>> 
>> I think that MVMailBundle is implemented by the Mail application itself, so you can only look it up within that context (ie running as a plug-in inside Mail). It's not clear to me if you're doing that.
>> 
>> FWIW, my Mail plug-in actually uses `objc.runtime.MVMailBundle` instead of using `objc.lookUpClass()` for that particular class (can't remember why; at some point I switched from using lookUpClass() to using objc.runtime), although I do look up other (Mail-only) classes using it.
> 
> objc.runtime is deprecated, and IIRC I removed it in PyObjC 3.0
> 
> Ronald
> 
>> 
>> – robert
>> 
>> Eric Fernance <er...@di...> wrote on Wed May 06 2015 at 09:13:25:
>>> Hi Folks,
>>> 
>>> I feel like I’ve been banging my head against a wall and looking for a couple of pointers.
>>> 
>>> I have seen examples of writing mail.app plugins where the private class is loaded using objc.lookUpClass.  For some reason I seem completely unable to get this to work.
>>> 
>>> I have tested from the command line using a variety of class names and any of the classes from public frameworks seem to load just fine (i.e NSOjbect etc).  When I try to load the MVMailBundle class using:
>>> 
>>> objc.lookUpClass('MVMailBundle’)
>>> 
>>> I receive an error: objc.nosuchclass_error: MVMailBundle
>>> 
>>> System details are: Mac OSX 10.10.2
>>> Python: 2.7
>>> PyObjC: PyObjC 3.0.4 
>>> 
>>> Is there somewhere that I need to switch on or enable the support for loading classes from private frameworks?
>>> 
>>> Any guidance would be really appreciated.
>>> 
>>> Cheers,
>>> Eric.
>>> 
>>> ------------------------------------------------------------------------------
>>> One dashboard for servers and applications across Physical-Virtual-Cloud 
>>> Widest out-of-the-box monitoring support with 50+ applications
>>> Performance metrics, stats and reports that give you Actionable Insights
>>> Deep dive visibility with transaction tracing using APM Insight.
>>> http://ad.doubleclick.net/ddm/clk/290420510;117567292;y_______________________________________________
>>> Pyobjc-dev mailing list
>>> Pyo...@li...
>>> https://lists.sourceforge.net/lists/listinfo/pyobjc-dev
>> 
>> ------------------------------------------------------------------------------
>> One dashboard for servers and applications across Physical-Virtual-Cloud 
>> Widest out-of-the-box monitoring support with 50+ applications
>> Performance metrics, stats and reports that give you Actionable Insights
>> Deep dive visibility with transaction tracing using APM Insight.
>> http://ad.doubleclick.net/ddm/clk/290420510;117567292;y_______________________________________________
>> Pyobjc-dev mailing list
>> Pyo...@li...
>> https://lists.sourceforge.net/lists/listinfo/pyobjc-dev
> 
> ------------------------------------------------------------------------------
> One dashboard for servers and applications across Physical-Virtual-Cloud 
> Widest out-of-the-box monitoring support with 50+ applications
> Performance metrics, stats and reports that give you Actionable Insights
> Deep dive visibility with transaction tracing using APM Insight.
> http://ad.doubleclick.net/ddm/clk/290420510;117567292;y_______________________________________________
> Pyobjc-dev mailing list
> Pyo...@li...
> https://lists.sourceforge.net/lists/listinfo/pyobjc-dev