Instantiating different elements within <template repeat>

[arodic]

It there a way to use template repeat to instantiate an arbitrary number of various custom elements based on input data? Here is pseudo-code describing what I'm trying to achieve:

<template repeat="{{node in nodes}}">
  <template if="{{node.type == 'float'}}"><node-float></node-float></template>
  <template if="{{node.type == 'vector'}}"><node-vector></node-vector></template>
  <template if="{{node.type == 'bool'}}"><node-bool></node-bool></template>
  <! -- etc... -->
</template>

I guess something like this could work, but if my data supports up to 1000 different node types, I would need an equal amount of if statements to make it work. Is there a more elegant way of doing this?

Another technique I tried was to make a custom element specifically for instantiating elements of certain type (like some sort of wrapper). The element would use document.CreateElement('node_type') and add it to it's shadowRoot. The problem with this was element.ready() would fire before the element was inserted into the DOM.

[dfreedm]

The attached callback is what you're looking for I think: it is called when a node is inserted into the document.

[arodic]

Perfect! That would work. Thanks @azakus!