JavaScript APIs - The Web is the Platform

@robertnyman@mozhacks

Developing a Web App

Open Web technologies:HTML5, CSS, JavaScriptA manifest ﬁle

Manifest ﬁle

{ "version": "1.0", "name": "ABBAInfo", "description": "Getting some ABBA info", "icons": { "16": "/abbainfo/images/icon-16.png", "48": "/abbainfo/images/icon-48.png", "128": "/abbainfo/images/icon-128.png" }, "developer": { "name": "Robert Nyman", "url": "http://robertnyman.com" }, "installs_allowed_from": [ "*" ], "launch_path": "/abbainfo/", "locales": { }, "default_locale": "en"}

MIME type:application/x-web-app-manifest+json

Installing a Web App

navigator.mozApps.install( URLToManifestFile, installData, sucessCallback, errorCallback);

ofﬂine & localStorage

<!DOCTYPE html><html manifest="offline.appcache"><head>...

CACHE MANIFEST# VERSION 10CACHE:offline.htmlbase.cssFALLBACK:online.css offline.cssNETWORK:/live-updates

Web Apps and platforms

Introducing Web Runtime - WebRT

Currently:WindowsMacAndroid

Future:As many aspossible

Whats needed to run/install a Web App?

HTML5-based WebRT:include.jsAvailable at:http://myapps.mozillalabs.com/jsapi/include.js

https://myapps.mozillalabs.com/

Marketplace

Fullscreen

<button id="view-fullscreen">Fullscreen</button><script type="text/javascript">(function () { var viewFullScreen = document.getElementById("view-fullscreen"); if (viewFullScreen) { viewFullScreen.addEventListener("click", function () { var docElm = document.documentElement; if (docElm.mozRequestFullScreen) { docElm.mozRequestFullScreen(); } else if (docElm.webkitRequestFullScreen) { docElm.webkitRequestFullScreen(); } }, false); }})(); </script>

mozRequestFullScreenWithKeys?

html:-moz-full-screen { background: red;}html:-webkit-full-screen { background: red;}

Camera

takePicture.onchange = function (event) { // Get a reference to the taken picture or chosen file var files = event.target.files, file; if (files && files.length > 0) { file = files[0]; // Get window.URL object var URL = window.URL || window.webkitURL; // Create ObjectURL var imgURL = URL.createObjectURL(file); // Set img src to ObjectURL showPicture.src = imgURL; // Revoke ObjectURL URL.revokeObjectURL(imgURL); }};

Boot to Gecko

https://github.com/andreasgal/B2Ghttps://github.com/andreasgal/gaia

Telephony & SMS

// Telephony objectvar tel = navigator.mozTelephony;// Check if the phone is muted (read/write property)console.log(tel.muted);// Check if the speaker is enabled (read/write property)console.log(tel.speakerEnabled);// Place a callvar call = tel.dial("123456789");

// Receiving a calltel.onincoming = function (event) { var incomingCall = event.call; // Get the number of the incoming call console.log(incomingCall.number); // Answer the call incomingCall.answer();};// Disconnect a callcall.hangUp();

// SMS objectvar sms = navigator.mozSMS;// Send a messagesms.send("123456789", "Hello world!");// Recieve a messagesms.onrecieved = function (event) { // Read message console.log(event.message);};

Battery

// Get battery level in percentagevar batteryLevel = battery.level * 100 + "%";// Get whether device is charging or notvar chargingStatus = battery.charging;// Time until the device is fully chargedvar batteryCharged = battery.chargingTime;// Time until the device is dischargedvar batteryDischarged = battery.dischargingTime;

battery.addEventLister("levelchange", function () { // Devices battery level changed}, false);battery.addEventListener("chargingchange", function () { // Device got plugged in to power, or unplugged}, false);battery.addEventListener("chargingtimechange", function () { // Devices charging time changed}, false);battery.addEventListener("dischargingtimechange", function () { // Devices discharging time changed}, false);

Vibration

Try new things

Robert Nymanrobertnyman.com/speaking/ robnyman@mozilla.comrobertnyman.com/html5/ Twitter: @robertnymanrobertnyman.com/css3/

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JavaScript APIs - The Web is the Platform

by Robert Nyman

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