Hello Sebastian,
great, thanks! If it was also possible to implement the inheritance of the
mixin properties, this would be fabulous. Then I could get rid of all the
manual mixins to all the classes where I need it. Or does this pose a
performance problem?
Best,
Christian
> Hi Christian,
>
> thank you for your feedback and your former work. Really appreciated.
> This seems to be a bug inside our property system. Each class remembers
> if the properties have been attached to a class. This way we reduce the
> overhead at class instantiation. However this makes it currently
> impossible to adding properties to classes which have at least one
> instance. I will try to fix this ASAP.
>
> Cheers,
>
> Sebastian
>
>
>
> Christian Boulanger schrieb:
>> OK - I found it out - maybe obvious, but wasn't for me:
>>
>> qx.Class.include() needs to be called BEFORE the class is instantiated
>> for the first time. The problem in my code was that the classes had been
>> used previously.
>>
>> So what I gathered is that the property system of qooxdoo is
>> FUNDAMENTALLY different from the normal javascript prototype-based
>> property inheritance, and that mixins at runtime are much more complex
>> that simply attaching methods to the prototype.
>>
>> I hope I'll have the time to write a short notice on this in the wiki.
>>
>> Cheers,
>>
>> Christian
>>
>> Christian Boulanger schrieb:
>>> Very very strange behaviour:
>>>
>>> var log= qx.log.Logger.ROOT_LOGGER;
>>> log.setMinLevel(qx.log.Logger.LEVEL_ALL);
>>>
>>> qx.Class.include(qx.ui.basic.Atom,qx.io.databinding.MDataManager);
>>> qx.Class.include(qx.ui.basic.Label,qx.io.databinding.MDataManager);
>>> qx.Class.include(qx.ui.form.List,qx.io.databinding.MDataManager);
>>>
>>> qx.Class.include(qx.ui.form.TextField,qx.io.databinding.MDataManager);
>>>
>>> var at = new qx.ui.basic.Atom;
>>> var la = new qx.ui.basic.Label;
>>> var li = new qx.ui.form.List;
>>> var tf = new qx.ui.form.TextField;
>>>
>>> log.info ("qx.ui.basic.Atom.getDataBinding: " +
>>> at.getDataBinding);
>>> log.info ("qx.ui.basic.Label.getDataBinding: " +
>>> la.getDataBinding);
>>> log.info ("qx.ui.form.List.getDataBinding: " +
>>> li.getDataBinding);
>>> log.info ("qx.ui.form.TextField.getDataBinding: " +
>>> tf.getDataBinding);
>>>
>>>
>>> INFO: root: qx.ui.basic.Atom.getDataBinding: undefined
>>> INFO: root: qx.ui.basic.Label.getDataBinding: undefined
>>> INFO: root: qx.ui.form.List.getDataBinding: function () { return
>>> qx.core.Property.executeOptimizedGetter(this, clazz, name, "get"); }
>>> INFO: root: qx.ui.form.TextField.getDataBinding: undefined
>>>
>>> So the mixin seems to "stick" only to the qx.ui.form.List, but to none
>>> of the other classes. Does anyone have an explanation?
>>>
>>> Christian
>>>
>>>
>>>
>>> Christian Boulanger schrieb:
>>>
>>>> Very interesting:
>>>>
>>>> qx.Class.include(qx.ui.form.List,qx.io.databinding.MDataManager);
>>>> qx.Class.include(qx.ui.basic.Label,qx.io.databinding.MDataManager);
>>>>
>>>> var li = new qx.ui.form.List;
>>>> var la = new qx.ui.basic.Label;
>>>>
>>>> qx.core.Log.error ("qx.ui.form.List.getDataBinding: " +
>>>> li.getDataBinding);
>>>> qx.core.Log.error ("qx.ui.basic.Label.getDataBinding: " +
>>>> la.getDataBinding);
>>>>
>>>> results in:
>>>>
>>>> qx.ui.form.List.getDataBinding: function () { return
>>>> qx.core.Property.executeOptimizedGetter(this, clazz, name, "get"); }
>>>> qx.ui.basic.Label.getDataBinding: undefined
>>>>
>>>> this looks very sophisticated! However, why is
>>>> qx.ui.basic.Label.getDataBinding undefined when
>>>> qx.ui.form.List.getDataBinding has been correctly set?
>>>>
>>>> C.
>>>>
>>>>
>>>> Christian Boulanger schrieb:
>>>>
>>>>
>>>>> Here is something I don't understand:
>>>>>
>>>>> qx.Class.include(qx.ui.form.List,qx.io.databinding.MDataManager);
>>>>> for (var i in qx.ui.form.List)
>>>>> qx.core.Log.error(i + ": " + qx.ui.form.List[i]);
>>>>>
>>>>> I get the following list:
>>>>>
>>>>> $$original: function () { <snip/>}
>>>>> classname: qx.ui.form.List
>>>>> name: anonymous
>>>>> basename: List
>>>>> toString: function () { return "[Class " + this.classname + "]"; }
>>>>> prototype: [object qx.ui.form.List]
>>>>> superclass: [Class qx.ui.layout.VerticalBoxLayout]
>>>>> constructor: [Class qx.ui.form.List]
>>>>> $$destructor: function () { this._disposeObjects("_manager"); }
>>>>> $$properties: [object Object]
>>>>> $$includes: [Mixin qx.io.databinding.MDataManager]
>>>>> $$flatIncludes: [Mixin qx.io.databinding.MDataManager]
>>>>>
>>>>> I am always amazed and surprised once I dive into the internals of
>>>>> qooxdoo... where are all the getter and setter methods here? why
>>>>> don't
>>>>> they show up if I do a "for (.. in..)" loop?
>>>>>
>>>>> C.
>>>>>
>>>>>
>>>>> Christian Boulanger schrieb:
>>>>>
>>>>>
>>>>>
>>>>>> Any ideas about this problem? At the moment I am not even getting
>>>>>> the
>>>>>> first option working, so everything might be a problem of my code.
>>>>>> Has
>>>>>> anyone else ever combined mixins and inheritance? Thanks, C.
>>>>>>
>>>>>> Christian Boulanger schrieb:
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>> if I am including the mixin like so:
>>>>>>>
>>>>>>>
>>>>>>> qx.Class.include(qx.ui.basic.Label,qx.io.databinding.MDataManager);
>>>>>>>
>>>>>>> everything works. However, trying to achieve the same with
>>>>>>>
>>>>>>> qx.Class.include(qx.core.Target,qx.io.databinding.MDataManager);
>>>>>>>
>>>>>>> fails. It seems I have to manually include the mixin into each
>>>>>>> class I
>>>>>>> want to use it with.
>>>>>>>
>>>>>>> No messages in the debug log.
>>>>>>>
>>>>>>> It would be great if this could be fixed.
>>>>>>>
>>>>>>> Thanks,
>>>>>>>
>>>>>>> Christian
>>>>>>>
>>>>>>>
>>>>>>>
>>>> -------------------------------------------------------------------------
>>>> This SF.net email is sponsored by DB2 Express
>>>> Download DB2 Express C - the FREE version of DB2 express and take
>>>> control of your XML. No limits. Just data. Click to get it now.
>>>> http://sourceforge.net/powerbar/db2/
>>>> _______________________________________________
>>>> qooxdoo-devel mailing list
>>>> qooxdoo-devel@lists.sourceforge.net
>>>> https://lists.sourceforge.net/lists/listinfo/qooxdoo-devel
>>>>
>>>>
>>>
>>> -------------------------------------------------------------------------
>>> This SF.net email is sponsored by DB2 Express
>>> Download DB2 Express C - the FREE version of DB2 express and take
>>> control of your XML. No limits. Just data. Click to get it now.
>>> http://sourceforge.net/powerbar/db2/
>>> _______________________________________________
>>> qooxdoo-devel mailing list
>>> qooxdoo-devel@lists.sourceforge.net
>>> https://lists.sourceforge.net/lists/listinfo/qooxdoo-devel
>>>
>>
>>
>> -------------------------------------------------------------------------
>> This SF.net email is sponsored by DB2 Express
>> Download DB2 Express C - the FREE version of DB2 express and take
>> control of your XML. No limits. Just data. Click to get it now.
>> http://sourceforge.net/powerbar/db2/
>> _______________________________________________
>> qooxdoo-devel mailing list
>> qooxdoo-devel@lists.sourceforge.net
>> https://lists.sourceforge.net/lists/listinfo/qooxdoo-devel
>
>
> -------------------------------------------------------------------------
> This SF.net email is sponsored by DB2 Express
> Download DB2 Express C - the FREE version of DB2 express and take
> control of your XML. No limits. Just data. Click to get it now.
> http://sourceforge.net/powerbar/db2/
> _______________________________________________
> qooxdoo-devel mailing list
> qooxdoo-devel@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/qooxdoo-devel
>
-------------------------------------------------------------------------
This SF.net email is sponsored by DB2 Express
Download DB2 Express C - the FREE version of DB2 express and take
control of your XML. No limits. Just data. Click to get it now.
http://sourceforge.net/powerbar/db2/
_______________________________________________
qooxdoo-devel mailing list
qooxdoo-devel@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/qooxdoo-devel
