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vcs: Use key lookup to explode if key is not available. The key has to be in the dictionary, otherwise something changed in the code and expoding here is better than hiding the error.

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channelstream-connection.html
106 lines | 3.7 KiB | text/html | HtmlLexer
<link rel="import" href="../../../../../../bower_components/polymer/polymer.html">
<link rel="import" href="../../../../../../bower_components/iron-ajax/iron-ajax.html">
<!--
`<channelstream-connection>` allows you to connect and interact with channelstream server
abstracting websocket/long-polling connections from you.
In typical use, just slap some `<channelstream-connection>` at the top of your body:
<body>
<channelstream-connection
username="{{user.username}}"
connect-url="http://127.0.0.1:8000/demo/connect"
disconnect-url="http://127.0.0.1:8000/disconnect"
subscribe-url="http://127.0.0.1:8000/demo/subscribe"
message-url="http://127.0.0.1:8000/demo/message"
long-poll-url="http://127.0.0.1:8000/listen"
websocket-url="http://127.0.0.1:8000/ws"
channels-url='["channel1", "channel2"]' />
Then you can do `channelstreamElem.connect()` to kick off your connection.
This element also handles automatic reconnections.
## Default handlers
By default element has a listener attached that will fire `startListening()` handler on `channelstream-connected` event.
By default element has a listener attached that will fire `retryConnection()` handler on `channelstream-connect-error` event,
this handler will forever try to re-establish connection to the server incrementing intervals between retries up to 1 minute.
-->
<dom-module id="channelstream-connection">
<template>
<iron-ajax
id="ajaxConnect"
url=""
handle-as="json"
method="post"
content-type="application/json"
loading="{{loadingConnect}}"
last-response="{{connectLastResponse}}"
on-response="_handleConnect"
on-error="_handleConnectError"
debounce-duration="100"></iron-ajax>
<iron-ajax
id="ajaxDisconnect"
url=""
handle-as="json"
method="post"
content-type="application/json"
loading="{{loadingDisconnect}}"
last-response="{{_disconnectLastResponse}}"
on-response="_handleDisconnect"
debounce-duration="100"></iron-ajax>
<iron-ajax
id="ajaxSubscribe"
url=""
handle-as="json"
method="post"
content-type="application/json"
loading="{{loadingSubscribe}}"
last-response="{{subscribeLastResponse}}"
on-response="_handleSubscribe"
debounce-duration="100"></iron-ajax>
<iron-ajax
id="ajaxUnsubscribe"
url=""
handle-as="json"
method="post"
content-type="application/json"
loading="{{loadingUnsubscribe}}"
last-response="{{unsubscribeLastResponse}}"
on-response="_handleUnsubscribe"
debounce-duration="100"></iron-ajax>
<iron-ajax
id="ajaxMessage"
url=""
handle-as="json"
method="post"
content-type="application/json"
loading="{{loadingMessage}}"
last-response="{{messageLastResponse}}"
on-response="_handleMessage"
on-error="_handleMessageError"
debounce-duration="100"></iron-ajax>
<iron-ajax
id="ajaxListen"
url=""
handle-as="text"
loading="{{loadingListen}}"
last-response="{{listenLastResponse}}"
on-request="_handleListenOpen"
on-error="_handleListenError"
on-response="_handleListenMessageEvent"
debounce-duration="100"></iron-ajax>
</template>
<script src="channelstream-connection.js"></script>
</dom-module>