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Modify the update strategy of a binding after creation [message #1353030]

Tue, 13 May 2014 18:53

Xavipen Mising name

Messages: 59
Registered: March 2011

Member

Hi,

Is there a way to modify the Update Policy in an already created binding, like:

//Pseudocode
Binding b = context.bindValue(uiElement, modelElement, targetToModel ( POLICY_NEVER ), modelToTarget (POLICY_UPDATE));

....
//Some condition

b.setTargetToModel(POLICY_UPDATE)
b.setModelToTarget(POLICY_NEVER)

As an alternative I have also try to remove the binding from the databinding context. like: One Action will call dataBindingContext.removeBinding(myBinding);
another dataBindingContext.addBinding(myBinding);

However, after running dataBindingContext.removeBinding(myBinding) I still see the changes in the UI.

Is there a way to "activate"/"deactivate" bindings? Could someone point my in the right direction?

Thanks in Advance
Javi

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Re: Modify the update strategy of a binding after creation [message #1362828 is a reply to message #1353030]

Sat, 17 May 2014 21:09

Erdal Karaca

Messages: 854
Registered: July 2009

Senior Member

You should call Binding.dispose(), then you can re-bind the observables with new policies, DatabindingContext.removeBinding() will just remove it from its internal list (without de-coupling the observables)...

Xavipen Mising name wrote on Tue, 13 May 2014 20:53

Hi,

Is there a way to modify the Update Policy in an already created binding, like:
//Pseudocode
Binding b = context.bindValue(uiElement, modelElement, targetToModel ( POLICY_NEVER ), modelToTarget (POLICY_UPDATE));

....
//Some condition

b.setTargetToModel(POLICY_UPDATE)
b.setModelToTarget(POLICY_NEVER)
As an alternative I have also try to remove the binding from the databinding context. like: One Action will call dataBindingContext.removeBinding(myBinding);
another dataBindingContext.addBinding(myBinding);

However, after running dataBindingContext.removeBinding(myBinding) I still see the changes in the UI.

Is there a way to "activate"/"deactivate" bindings? Could someone point my in the right direction?

Thanks in Advance
Javi