balazs/Manifest.json

## index.html
<!DOCTYPE html>
<!--
Copyright 2014 Google Inc. All Rights Reserved.

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

    http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
-->

<!-- <link rel="manifest" href="Manifest.json" /> -->

<script>
var SCOPE = {
    scope: '/'
};

function setCheckbox(id, checked) {
    document.getElementById(id).checked = checked;
}

function appendLog(id, text) {
    document.getElementById(id).innerHTML += "<br/>" + text;
}

function registerSW() {
    navigator.serviceWorker.register('service-worker.js', SCOPE).then(
        function (swReg) {
            console.log('SW registered');
            setCheckbox("swDisplay", true);
            var anySW = swReg.active || swReg.installing || swReg.waiting;
            console.log('anySW: ' + JSON.stringify(anySW));
            anySW.postMessage('wazzup sw?');
        },
        function (err) {
            console.error('sw reg failed: ' + err);
        }
    )
    // .catch(
    //     function (err) {
    //         console.error('smg failed: ' + err);
    //     }
    // );
}

function unregisterSW() {
    navigator.serviceWorker.unregister(SCOPE).then(
        function() {
            console.log('SW unregistered');
            setCheckbox("swDisplay", false);
        }
    );
}

this.onmessage = function(event) {
    console.log("msg from SW: " + event.data);
    appendLog('swmsg', event.data);
}

function sendMsgToSw() {
    msg = 'Tell me something nice, please.';
    navigator.serviceWorker.controller.postMessage(msg);
    appendLog('toswmsg', msg);
}

</script>
<link rel="prefetch" href="service-worker.js" />
<body>
<p>
<span>Service worker active: </span><input type="checkbox" id="swDisplay" />
</p>
<button onclick="registerSW()">Register SW</button>
<button onclick="unregisterSW()">Unregister SW</button>
<p>
<button onclick="sendMsgToSw()">Send to SW</button>
</p>
<div id="toswmsg">--We say--</div>
<div id="swmsg">--SW says--</div>
</body>

## Manifest.json
{
    "gcm_sender_id": "766134470826"
}

## service-worker.js
this.onpush = function(event) {
    console.log("Push message received");
    console.log(event.data);
}

function sendMsg(msg) {
    this.clients.getAll().then(
        function (clients) {
            clients[0].postMessage(msg);
        }
    );
}

this.onmessage = function(event) {
    console.log("msg: " + event.data);
    if (event.data.startsWith('wazzup')) {
        sendMsg('Greetings Master!');
    } else {
        sendMsg("Luke, I am your SERVICE WORKER!");
    }
}

this.oninstall = function(event) {
    console.log("dude, I'm installed");
}

this.onactivate = function(event) {
    console.log("dude, I'm activated");
}
	<!DOCTYPE html>
	<!--
	Copyright 2014 Google Inc. All Rights Reserved.

	Licensed under the Apache License, Version 2.0 (the "License");
	you may not use this file except in compliance with the License.
	You may obtain a copy of the License at

	http://www.apache.org/licenses/LICENSE-2.0

	Unless required by applicable law or agreed to in writing, software
	distributed under the License is distributed on an "AS IS" BASIS,
	WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
	See the License for the specific language governing permissions and
	limitations under the License.
	-->

	<!-- <link rel="manifest" href="Manifest.json" /> -->

	<script>
	var SCOPE = {
	scope: '/'
	};

	function setCheckbox(id, checked) {
	document.getElementById(id).checked = checked;
	}

	function appendLog(id, text) {
	document.getElementById(id).innerHTML += "<br/>" + text;
	}

	function registerSW() {
	navigator.serviceWorker.register('service-worker.js', SCOPE).then(
	function (swReg) {
	console.log('SW registered');
	setCheckbox("swDisplay", true);
	var anySW = swReg.active \|\| swReg.installing \|\| swReg.waiting;
	console.log('anySW: ' + JSON.stringify(anySW));
	anySW.postMessage('wazzup sw?');
	},
	function (err) {
	console.error('sw reg failed: ' + err);
	}
	)
	// .catch(
	// function (err) {
	// console.error('smg failed: ' + err);
	// }
	// );
	}

	function unregisterSW() {
	navigator.serviceWorker.unregister(SCOPE).then(
	function() {
	console.log('SW unregistered');
	setCheckbox("swDisplay", false);
	}
	);
	}

	this.onmessage = function(event) {
	console.log("msg from SW: " + event.data);
	appendLog('swmsg', event.data);
	}

	function sendMsgToSw() {
	msg = 'Tell me something nice, please.';
	navigator.serviceWorker.controller.postMessage(msg);
	appendLog('toswmsg', msg);
	}

	</script>
	<link rel="prefetch" href="service-worker.js" />
	<body>
	<p>
	<span>Service worker active: </span><input type="checkbox" id="swDisplay" />
	</p>
	<button onclick="registerSW()">Register SW</button>
	<button onclick="unregisterSW()">Unregister SW</button>
	<p>
	<button onclick="sendMsgToSw()">Send to SW</button>
	</p>
	<div id="toswmsg">--We say--</div>
	<div id="swmsg">--SW says--</div>
	</body>
	this.onpush = function(event) {
	console.log("Push message received");
	console.log(event.data);
	}

	function sendMsg(msg) {
	this.clients.getAll().then(
	function (clients) {
	clients[0].postMessage(msg);
	}
	);
	}

	this.onmessage = function(event) {
	console.log("msg: " + event.data);
	if (event.data.startsWith('wazzup')) {
	sendMsg('Greetings Master!');
	} else {
	sendMsg("Luke, I am your SERVICE WORKER!");
	}
	}

	this.oninstall = function(event) {
	console.log("dude, I'm installed");
	}

	this.onactivate = function(event) {
	console.log("dude, I'm activated");
	}