Index: third_party/polymer/v0_8/components/iron-signals/README.md |
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-iron-signals |
-============ |
- |
-`iron-signals` provides basic publish-subscribe functionality. |
- |
-Note: avoid using `iron-signals` whenever you can use |
-a controller (parent element) to mediate communication |
-instead. |
- |
-To send a signal, fire a custom event of type `iron-signal`, with |
-a detail object containing `name` and `data` fields. |
- |
-```javascript |
-this.fire('iron-signal', {name: 'hello', data: null}); |
-``` |
- |
-To receive a signal, listen for `iron-signal-<name>` event on a |
-`iron-signals` element. |
- |
-```html |
-<iron-signals on-iron-signal-hello="{{helloSignal}}"> |
-``` |
- |
-You can fire a signal event from anywhere, and all |
-`iron-signals` elements will receive the event, regardless |
-of where they are in DOM. |