Redefining a Polmer element at runtime

[phil cleaver]

Hi,

I'm writing an IDE for web components and I'm trying to find a way of changing the definition of a web component at runtime.  If I try to reregister the element I simply get a message that a component with this name already exists.

Is there a way to remove a web component definttion from the document so I can reload it?

Regards

Phil

[Daniel Freedman]

No component definitions are write-once for now (https://github.com/w3c/webcomponents/issues/152). There are ideas for v2 to have CustomElement registries exposed and modifiable, but no concrete proposals as far as I know.

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[Justin Fagnani]

One potential workaround I've thought of in the context of Polymer Designer, is to patch up Polymer() to be able to able to redefine elements - possibly by inserting an extra prototype in the prototype chain just about the instances, then on redefinition change that object's proto pointer to the new prototype and skip calling document.registerElement(). I'm not all all sure what might break if I did that, but I'm pretty sure something would. The fallback is to just reload the page, and try to serialize the important state in some way.

-Justin

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