I had a pretty nice custom element system build on the pollyfills
from Stable release 2013-11-07 When I updated to 0.1.2, everything broke.
I've been going throughout, fixing things bit by bit, but now I'm to a
point where I'm wondering if there's something wrong with Polymer. It seems
as if custom element binding are being evaluated before the element is
upgraded. I'm not sure about that, but I can't explain the behavior I'm
seeing any other way. Here's my custom element test code:
var proto = Object.create(HTMLElement.prototype);
proto.createdCallback = function () {
this.customAttributes = {};
console.log('created');
};
proto.attachedCallback = function() {
console.log('attached');
};
proto.bind = function(name, value, oneTime) {
console.log('bind', name, value, oneTime);
};
proto.setAttribute = function(name, value) {
console.log('setAttribute', name, value);
};
proto.attributeChangedCallback = function(attrName, oldVal, newVal) {
console.log('attribute changed', attrName, oldVal, newVal);
};
Object.defineProperty(proto, 'something', {
get: function () {
return this.customAttributes['something'];
},
set: function (val) {
this.customAttributes['something'] = value;
console.log('something change', value);
}
});
document.registerElement('dx-test', { prototype: proto });
Then I use it inside of one of my templates like this:
<dx-test something="{{someProperty}}"></dx-test>
When I do this, the only callback that is fired is *createdCallback * and
by then it seems to have already parsed the bindings out. This prevents me
from having any custom *bind* logic and even from reliably getting the
value of my own property. If *something* is not a primitive value, then
attribute's value is the result of *toString().*
Am I doing something wrong here? Is this a bug?
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