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
>>>>>>
>>>>>>
>>>>>>
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