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    Firefox OS 1.2 for developers

    Firefox OS 1.2 is at a pre-release stage right now. Its Gecko component is based on Firefox 26 (encompassing all Gecko additions between Firefox 19 and Firefox 26; see Firefox 26 release notes for developers for the latest.) This page details the developer features newly implemented in Firefox OS 1.2.

    Developer Tools

    HTML

    General Gecko:

    • The srcdoc attribute of <iframe>, allowing the inline specification of the content of an <iframe>, is now supported (bug 802895).
    • When used with a "image/jpeg" type, the method HTMLCanvasElement.toBlob now accepts a third attribute defining the quality of the image (bug 891884).
    • The <track> element has been implemented behind the media.webvtt.enabled property (bug 833385).
    • The <blink> element support is now completely dropped. The <blink> tag now implements the HTMLUnknownElement interface (bug 857820).
    • The range state of the <input> element (<input type="range">) has been switched on by default (bug 841950).
    • The HTML5 <data> element has been implemented (bug 839371).
    • The HTML5 <time> element has been implemented (bug 629801).
    • The range state of the <input> element (<input type="range">) has been implemented, behind the preference dom.experimental_forms_range, only enabled by default on Nightly and Aurora channel (bug 841948).
    • The support for the <template> element, part of the Web component specification has been implemented (bug 818976).
    • The scoped attribute has been added to the <style> element. It allows to include styles that are isolated from the rest of the document. Such styles can be selected using the :scope CSS pseudo-element introduced in Firefox 20. (bug 508725).
    • The new HTML <main> element has been implemented (bug 820508).
    • Support for the download attribute on the <a> and <area> element has been added (bug 676619).
    • The value auto for the global attribute dir has been implemented (bug 548206).

    CSS

    General Gecko:

    JavaScript

    General Gecko:

    EcmaScript 6 (Harmony) implementation continues!

    • New mathematical methods have been implemented on Math: Math.fround() (bug 900125).
    • The method Array.of() is now implemented on Array (bug 866849).
    • The methods Number.parseInt() and Number.parseFloat() have been implemented (bug 886949)
    • The methods Map.prototype.forEach() and Set.prototype.forEach() are now implemented (bug 866847)
    • New mathematical methods have been implemented on Math: Math.log10(), Math.log2(), Math.log1p(), Math.expm1(), Math.cosh(), Math.sinh(), Math.tanh(), Math.acosh(), Math.asinh(), Math.atanh(), Math.trunc(), Math.sign() and Math.cbrt() (bug 717379).
    • Support for binary and octal integer literals has been added: 0b10101010, 0B1010, 0o777, 0O237 are now valid (bug 894026).
    • The machine epsilon constant, that is the smallest representible number that added to 1 will not be 1, is now available as Number.EPSILON (bug 885798).
    • Arrow functions are no longer automatically in strict mode unless explicitly requested with "use strict" (bug 852762)).
    • The String.prototype.repeat JS method has been implemented (bug 815431).
    • The Object.defineProperty method can now be used to redefine the length property of an Array object.
    • The option to disable JavaScript, including the options to allow moving windows/replace context menu, have been removed. You may still disable JavaScript by double clicking the "javascript.enabled" option in about:config.
    • Asm.js optimizations are enabled, making it possible to compile C/C++ applications to a subset of Javascript for better performance.
    • ES6 Arrow Function syntax has been implemented (bug 846406).
    • The new Object.is function has been added (bug 839979).
    • E4X, an ancient JavaScript extension, has been removed. Implemented only in Gecko, it never got significant traction (bug 788293).
    • parseInt no longer treats strings with leading "0" as octal (bug 786135).
    • Support for the Weakmap.prototype.clear() method, recently added to the Harmony (EcmaScript 6) draft proposal has been added (bug 814562).
    • Support for the Math.imul() method, a C-style 32-bit multiplication function. Though proposed for Harmony (EcmaScript 6) it has not yet accepted and still is non-standard (bug 808148).
    • Web apps using draggable text with Kinetic 3.x are working, even when using the Cairo canvas backend (bug 835064).
    • The for each…in statement has been deprecated and should not be used. Consider using the new for…of statement (bug 804834).
    • Support for the Map.prototype.keys, Map.prototype.values, and Map.prototype.entries has been added (bug 817368).
    • Map and Set objects have changed from having a size() method to a size property (bug 807001).
    • Map and Set objects also have a clear() method now. (bug 805003).

    Telephony-specific additions (mostly API-related)

    • Fuzzy matcher API for phone numbers (bug 883923)
    • CDMA
      • Registration info (bug 882984)
        • (bug 882984)
        • multiple new CDMA specific attributes in MozMobileCellInfo
        • dom/network/interfaces/nsIDOMMobileConnection.idl
      • Emergency callback mode support (bug 887690)
        • new method exitEmergencyCbMode and new event emergencycbmodechange in MozMobileConnection
        • dom/network/interfaces/nsIDOMMozEmergencyCbModeEvent.idl
      • OTASP (bug 882983)
        • new event otastatuschange in MozMobileConnection
        • dom/network/interfaces/nsIDOMMozOtaStatusEvent.idl
      • MDN/MIN (bug 869778)
        • new interface MozGsmIccInfo & MozCdmaIccInfo
        • new attribute iccType in MozIccInfo
        • dom/icc/interfaces/nsIDOMIccInfo.idl
      • Preferred voice mode (bug 869769)
        • new methods setVoicePrivacyMode and getVoicePrivacyMode in MozMobileConnection
        • dom/network/interfaces/nsIDOMMobileConnection.idl
      • Roaming preference (bug 869768)
        • new methods setRoamingPreference and getRoamingPreference in MozMobileConnection
        • dom/network/interfaces/nsIDOMMobileConnection.idl
      • Call Waiting (bug 822210)
        • new attribute secondNumber in TelephonyCall
        • dom/webidl/TelephonyCall.webidl
    • Support Change Call Barring Password (bug 905479)
      • new method changeCallBarringPassword in MozMobileConnection
      • dom/network/interfaces/nsIDOMMobileConnection.idl
    • Move ICC functions out from MobileConnection (bug 875721, bug 874744, bug 860585, bug 859220)
      • MozIccInfo
        • navigator.mozIccManager.iccInfo
        • new interface
        • dom/icc/interfaces/nsIDOMIccInfo.idl
      • MozIccManager
        • navigator.mozIccManager
        • new attributes, methods, and events
        • dom/icc/interfaces/nsIDOMIccManager.idl
      • MozMobileConnection
        • navigator.mozMobileConnection
        • numerous attributes, methods and events removed
        • dom/network/interfaces/nsIDOMMobileConnection.idl
      • nsIDOMMozMobileICCInfo
        • navigator.mozMobileConnection.iccInfo
        • interface removed
    • ICC card lock improvements
      • Rename ICCCardLockErrorEvent to IccCardLockErrorEvent
        • dom/webidl/IccCardLockErrorEvent.webidl
      • Retry count (bug 886239, bug 875710)
        • attribute retryCount removed from MozMobileConnection
        • new method getCardLockRetryCount in MozIccManager
        • dom/network/interfaces/nsIDOMMobileConnection.idl
        • dom/icc/interfaces/nsIDOMIccManager.idl
    • Import/export SIM Contacts (bug 847741, bug 847820)
      • new methods readContacts, updateContact in MozIccManager
      • dom/icc/interfaces/nsIDOMIccManager.idl
    • ICC Secure Elements (bug 840780)
      • new methods iccOpenChannel, iccExchangeAPDU, iccCloseChannel in MozIccManager
      • dom/icc/interfaces/nsIDOMIccManager.idl
    • STK improvements
      • 'duration' for Display Text, Setup Call commands (bug 831630)
        • new attribute duration in both MozStkTextMessage and MozStkSetUpCall
        • dom/icc/interfaces/SimToolKit.idl
      • support "Language Selection Event" (bug 831627)
        • new dictionary MozStkLanguageSelectionEvent
        • dom/icc/interfaces/SimToolKit.idl
      • support "Idle Screen Available Event" (bug 831628)
        • new dictionary MozStkGeneralEvent
        • dom/icc/interfaces/SimToolKit.idl
    • MobileMessage
      • Turn getSegmentInfoForText into an async call (bug 903403)
        • dom/mobilemessage/interfaces/nsIDOMMobileMessageManager.idl
      • Remove navigator.mozSms (bug 891235)
    • Telephony
      • support "Conference Call" (certified only) (bug 772765)
        • navigator.mozTelephony.conferenceGroup
        • new interface

    DOM/API

    Firefox OS-specific:

    • Device Storage API: When getting a cursor callback from navigator.getDeviceStorage("sdcard").enumerate, this.done was undefined in Firefox <1.2 (see bug 902565). This is now fixed. The referenced bug discusses possible compatibility checks/workarounds for this issue.
    • The RTCPeerConnection Interface from WebRTC is implemented, but currently disabled by default in B2G, as it is not yet functional on Firefox OS devices (see bug 942343.)
    • Web notifications are supported in Firefox 1.2, therefore the Notification object should be used in preference to the old deprecated mozNotification object (see bug 899574 .)
    • mozInputMethod has been added to allow for people to write 3rd party keyboards. See the test application in gaia/test_apps for a reference implementation.
    • The Media Recording API has been implemented (see bug 803414, bug 889720)
    • KeyboardEvent.repeat now supported (bug 600117)
    • 3rd party keyboards now supported (bug 816869)
    New WebGL 1 extensions supported in Firefox OS 1.2:
    Note: availability of these extensions depends on device capabilities; not all extensions will be available on all devices.

    General Gecko:

    SVG

    General Gecko:

    MathML

    General Gecko:

    • The dir attribute for controlling directionality of formulas on e.g. <math> or <mrow> elements is now equivalent to using the direction CSS property.
    • The equal sign ("=") is now stretchable.
    • The "updiagonalarrow" value for the notation attribute on <menclose> elements has been added.
    • Negative widths for the <mspace> element has been implemented (bug 717546).
    • The <semantics> element now determines the visible child as described in the MathML3 specification.
    • To help MathML authors debugging "invalid-markup" errors in their documents, MathML parsing errors (such as having too many / too few child elements) and warnings about deprecated attributes or wrong attribute values are now reported to the Error Console.
    • The scriptminsize attribute now accepts unitless values and percent values. They are interpreted as multiples of the default value ("8pt").
    • Unitless values are now also allowed for the mathsize and fontsize attributes; they multiply the default value.

    Network

    General Gecko:

    • We continue to update our CSP implementation to match the CSP 1.0 spec, which reached Candidate Recommendation:
      • Support for the spec-compliant Content-Security-Policy HTTP header (in addition to the experimental X-Content-Security-Policy) has been added (bug 783049). Note: the patch for this new header landed in Firefox 21, it is disabled on builds (bug 842657).

    Worker

    General Gecko:

    Security

    General Gecko:

    • Mixed content blocking. Firefox will no longer load non-secure (http) resources on secure (https) pages (bug 834836).
    • The standard syntax of CSP 1.0 policies are now implemented and enforced by default.

    XForms

    General Gecko:

    Support for XForms has been removed in Firefox 19.

    See also

    Older versions

     

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    Document Tags and Contributors

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     Contributors to this page: Sebastianz, chrisdavidmills, RAMACHANDRAN, Milayne, Meghraj, janjongboom, trevorh
     Last updated by: Sebastianz,