Mozilla, Firefox OS and the Open Web
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Mozilla is a non-profit dedicated to promoting open web standards. Firefox OS is Mozilla's open source operating system for mobile devices that uses HTML5, CSS and JavaScript to build apps. The document discusses Firefox OS's use of web technologies and APIs to access device capabilities like contacts, notifications, vibration and sensors while maintaining security and privacy. It provides code examples for common APIs and outlines Mozilla's vision of enabling developers to use the web to create full-featured mobile apps and games.
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Mozilla, Firefox OS and the Open Web
- 1. Mozilla, Firefox OS & the Open Web
- 6. @robertnyman
- 7. Mozilla is a global non- profit dedicated to putting you in control of your online experience and shaping the future of the Web for the public good
- 12. Using HTML5, CSS and JavaScript together with a number of APIs to build apps and customize the UI. Firefox OS
- 13. A walk in the park
- 15. Packaged vs. Hosted Apps
- 16. WebAPIs
- 18. Security Levels
- 19. Web Content Regular web content Installed Web App A regular web app Privileged Web App More access, more responsibility Certi���ed Web App Device-critical applications
- 21. "permissions": { "contacts": { "description": "Required for autocompletion in the share screen", "access": "readcreate" }, "alarms": { "description": "Required to schedule notifications" } }
- 22. PERMISSIONS
- 23. Vibration API (W3C) Screen Orientation Geolocation API Mouse Lock API (W3C) Open WebApps Network Information API (W3C) Battery Status API (W3C) Alarm API Web Activities Push Notifications API WebFM API WebPayment IndexedDB (W3C) Ambient light sensor Proximity sensor Notification REGULAR APIS
- 25. var battery = navigator.battery; if (battery) { var batteryLevel = Math.round(battery.level * 100) + "%", charging = (battery.charging)? "" : "not ", chargingTime = parseInt(battery.chargingTime / 60, 10, dischargingTime = parseInt(battery.dischargingTime / 60, 10); // Set events battery.addEventListener("levelchange", setStatus, false); battery.addEventListener("chargingchange", setStatus, false); battery.addEventListener("chargingtimechange", setStatus, false); battery.addEventListener("dischargingtimechange", setStatus, false); }
- 27. // Portrait mode: screen.mozLockOrientation("portrait"); /* Possible values: "landscape" "portrait" "landscape-primary" "landscape-secondary" "portrait-primary" "portrait-secondary" */
- 28. VIBRATION API
- 29. // Vibrate for one second navigator.vibrate(1000); // Vibration pattern [vibrationTime, pause,…] navigator.vibrate([200, 100, 200, 100]); // Vibrate for 5 seconds navigator.vibrate(5000); // Turn off vibration navigator.vibrate(0);
- 30. DEVICEPROXIMITY
- 31. window.addEventListener("deviceproximity", function (event) { // Current device proximity, in centimeters console.log(event.value); // The maximum sensing distance the sensor is // able to report, in centimeters console.log(event.max); // The minimum sensing distance the sensor is // able to report, in centimeters console.log(event.min); });
- 33. window.addEventListener("devicelight", function (event) { // The level of the ambient light in lux console.log(event.value); });
- 34. window.addEventListener("devicelight", function (event) { // The lux values for "dim" typically begin below 50, // and the values for "bright" begin above 10000 console.log(event.value); });
- 35. Device Storage API Browser API TCP Socket API Contacts API systemXHR PRIVILEGED APIS
- 37. var deviceStorage = navigator.getDeviceStorage("videos");
- 38. // "external", "shared", or "default". deviceStorage.type; // Add a file - returns DOMRequest with file name deviceStorage.add(blob); // Same as .add, with provided name deviceStorage.addNamed(blob, name); // Returns DOMRequest/non-editable File object deviceStorage.get(name); // Returns editable FileHandle object deviceStorage.getEditable(name); // Returns DOMRequest with success or failure deviceStorage.delete(name); // Enumerates files deviceStorage.enumerate([directory]); // Enumerates files as FileHandles deviceStorage.enumerateEditable([directory]);
- 39. var storage = navigator.getDeviceStorage("videos"), cursor = storage.enumerate(); cursor.onerror = function() { console.error("Error in DeviceStorage.enumerate()", cursor.error.name); }; cursor.onsuccess = function() { if (!cursor.result) return; var file = cursor.result; // If this isn't a video, skip it if (file.type.substring(0, 6) !== "video/") { cursor.continue(); return; } // If it isn't playable, skip it var testplayer = document.createElement("video"); if (!testplayer.canPlayType(file.type)) { cursor.continue(); return; } };
- 40. WEB ACTIVITIES
- 41. Interacting with the camera
- 43. var activity = new MozActivity({ name: "view", data: { type: "image/png", url: ... } }); activity.onsuccess = function () { console.log("Showing the image!"); }; activity.onerror = function () { console.log("Can't view the image!"); };
- 44. { "activities": { "share": { "filters": { "type": ["image/png", "image/gif"] } "href": "sharing.html", "disposition": "window" } } }
- 45. navigator.mozSetMessageHandler("activity", function (a) { var img = getImageObject(); img.src = a.source.url; // Call a.postResult() or a.postError() if // the activity should return a value });
- 46. Future APIs
- 47. Resource lock API UDP Datagram Socket API Peer to Peer API WebNFC WebUSB HTTP-cache API Calendar API Spellcheck API LogAPI Keyboard/IME API WebRTC FileHandle API Sync API
- 48. Games!
- 49. Web Apps from Mozilla
- 51. Dialer Contacts Settings SMS Web browser Gallery Video Player Music Player E-mail (POP, IMAP) Calendar Alarm Clock Camera Notes First Run Experience Notifications Home Screen Mozilla Marketplace System Updater Localization Support
- 53. Get started
- 56. Help each other
- 57. Go have some fun!