[Qt-qml] Property Bindings *within* Javascript?

[Mikola Tapani (Nokia-MS/Tampere)]

Check out an old thread in this mailing list for a possible workaround:
http://www.mail-archive.com/qt-qml@trolltech.com/msg00738.html

Summary:
There is Binding -item in QML and there is also Qt.createQmlObject 
-method to dynamically create QML Items. So it is possible to create a 
Binding -item dynamically. And Binding -item creates a binding! The 
problem in that thread was to set a binding to a dynamically created 
item. It was solved by also creating a Binding -item dynamically. I have 
not tried how this would work, if there already would exist a binding 
that you would like to change e.g. due to reparenting.

- Tapani

On 26.10.2010 03:08, ext michael.brasser at nokia.com wrote:
> Hi,
>
> On 24/10/2010, at 12:49 AM, ext Charley Bay wrote:
>
>> The QML docs state:
>>
>>> Property bindings are the most common use of JavaScript in QML.
>>> Property bindings associate the result of a JavaScript expression
>>> with a property of an object.
>>
>> ...found at:
>>
>> <http://doc.qt.nokia.com/4.7/qdeclarativescope.html>
>>
>> IMHO, this is one of the most pivotal concepts in QML.
>>
>> However, I'm trying to figure out how to *set* such a binding
>> *within* javascript.  Can this be done?
>
> There is currently no API for establishing a binding from within javascript (PropertyChanges is currently the only way to set a binding "after-the-fact"). Would you mind adding a suggestion for this via the task tracker (http://bugreports.qt.nokia.com)?
>
> Regards,
> Michael
>
>
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