[email protected], John
On Jul 24, 2014 8:20 AM, "Nik Graf" <[email protected]> wrote:
> I would like to identify if my component is still the active element after
> a blur event.
>
> Here example code & a use-case to provide more Context:
>
> <polymer-element name="b-secret">
> <template>
> <div>Other things here</div>
> <input id="password-field" type="password" value="{{value}}">
> </template>
> <script type="application/dart" src="secret.dart"></script>
> </polymer-element>
>
> A user clicks on a custom input element (b-secret). If you call
> document.activeElement you will get the custom element (b-secret) for
> Browsers supporting ShadowDOM. In Firefox (no ShadowDOM support) for
> example you will get the actual input element (#password-field) inside your
> component.
>
> While I guess fixing document.activeElement is not really possible I would
> expected shadowRoot.querySelector('#password-field').hashCode to be the
> same as document.activeElement.hashCode.
>
> I investigate a bit and recognized that the ShadowDOM shim creates a
> wrapper object for the queried input field when compiled to JavaScript. The
> wrapper object is aware of the field's hashCode I'm looking for, but I
> can't access it through Dart. See the annotated Screenshot:
> http://cl.ly/image/3F2b1l343O43
>
> You can find the real world example here:
> https://github.com/blossom/bee/blob/secret-ff-fix/lib/components/secret/secret.dart#L100
>
> Follow Polymer on Google+: plus.google.com/107187849809354688692
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