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event.html
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<!doctype html>
<html lang="en-GB">
<head>
<meta charset="utf-8">
<style>
body {
background: #fafafa;
}
</style>
</head>
<body>
<script type="module">
import '../dist/src/prprabhu-providers-event.js';
</script>
This element is unwrapped by a provider.
<prprabhu-providers-event-hello></prprabhu-providers-event-hello>
<prprabhu-providers-event id="p1">
This element is wrapped by a provider that has no context.
<prprabhu-providers-event-hello id="h1"></prprabhu-providers-event-hello>
</prprabhu-providers-event>
<prprabhu-providers-event id="p2" world="Uranus">
This element is wrapped by a provider that has context.
<prprabhu-providers-event-hello id="h2"></prprabhu-providers-event-hello>
</prprabhu-providers-event>
<prprabhu-providers-event id="p3">
This element is wrapped by a provider for which the context is set later via JS.
<prprabhu-providers-event-hello id="h3"></prprabhu-providers-event-hello>
</prprabhu-providers-event>
<script>
document.getElementById('p3').setAttribute("world", "Neptune");
</script>
<prprabhu-providers-event id="p4" world="Jupiter">
Nested elements with context.
<prprabhu-providers-event-hello id="h4.1">
<prprabhu-providers-event-hello id="h4.2"></prprabhu-providers-event-hello>
</prprabhu-providers-event-hello>
</prprabhu-providers-event>
<prprabhu-providers-event id="p5" world="Mercury">
Nested elements with context. Nested through shadow-dom.
<prprabhu-providers-event-hello-nested id="h5.1">
<prprabhu-providers-event-hello id="h5.2"></prprabhu-providers-event-hello>
</prprabhu-providers-event-hello-nested>
</prprabhu-providers-event>
<prprabhu-providers-event id="p6.1" world="Pluto">
<prprabhu-providers-event id="p6.2" world="Earth">
Nested providers. Innermost wins!
<prprabhu-providers-event-hello id="h6"></prprabhu-providers-event-hello>
</prprabhu-providers-event>
</prprabhu-providers-event>
<prprabhu-providers-event-questionable id="p7" world="Venus">
This element is wrapped by an alternative provider.
Providers are defined by their handling of the register/unregister events.
So different provider implementations can exist independently.
<prprabhu-providers-event-hello id="h7"></prprabhu-providers-event-hello>
</prprabhu-providers-event-questionable>
<prprabhu-providers-event-out-of-order id="p8" world="Venus">
This element is wrapped by an alternative provider that was <em>defined after the component</em> in source code.
<h3>Broken</h3>
It seems that the event handler isn't registered in time to handle the event fired by the contents.
<prprabhu-providers-event-hello id="h8"></prprabhu-providers-event-hello>
</prprabhu-providers-event-out-of-order>
<prprabhu-providers-event-late-but-connected id="p8" world="Venus">
This element is wrapped by an alternative provider that was <em>defined after the component</em> in source code.
In this case, the event listener is added in connectedCallback instead of constructor.
<h3>Broken</h3>
It seems that the event handler isn't registered in time to handle the event fired by the contents.
<prprabhu-providers-event-hello id="h8"></prprabhu-providers-event-hello>
</prprabhu-providers-event-late-but-connected>
<prprabhu-providers-event-out-of-order id="p8" world="Venus">
This element is wrapped by an alternative provider that was <em>defined after the component</em> in source code.
In this case, the component delays firing the event to allow the provider to be initialized.
<prprabhu-providers-event-hello-delay-event id="h8"></prprabhu-providers-event-hello-delay-event>
</prprabhu-providers-event-out-of-order>
</body>
</html>