Accessibility on OS X

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1 Frameworks #WWDC14 Accessibility on OS X New Accessibility API Session 207 Patti Hoa Accessibility Engineer! Chris Dolan Accessibility Engineer 2014 Apple Inc. All rights reserved. Redistribution or public display not permitted without written permission from Apple.

2 Agenda

3 Agenda Accessibility for everyone

4 Agenda Accessibility for everyone Overview of the new Accessibility API

5 Agenda Accessibility for everyone Overview of the new Accessibility API Testing of accessibility changes

6 Agenda Accessibility for everyone Overview of the new Accessibility API Testing of accessibility changes Demo

7

8

9

10

11 Switch Control Cursor Scaling Mouse Keys Slow Keys Speak Selection Feature Contrast Enhancements Sticky Keys Invert Colors Flash Screen Alert Zoom Subtitles VoiceOver Slow Speak Auto-text Closed Captioning Zoom Window Large Text

12

13 Flow of Accessibility Information Application

14 Flow of Accessibility Information Assistive Software Application

15 Flow of Accessibility Information Assistive Software Application Request accessibility information

16 Flow of Accessibility Information Vends accessibility information Assistive Software Application Request accessibility information

17 Flow of Accessibility Information Assistive Software Application

18 Flow of Accessibility Information Accessibility API Assistive Software Application

19 New Accessibility API on OS X

20

21 Goals:

22 Goal:

23 Goal: Simplify

24

25

26

27

28 Button Button Button

29

30

31

32

33 Using AppKit control?

34 Using AppKit control? Accessibility for free!

35 button

36

37

38 Adding Label to an AppKit Control - (void)awakefromnib {... NSButtonCell *mybuttoncell = [myloopbutton cell]; mybuttoncell.accessibilitylabel = NSLocalizedString(@"play", nil);... }

39 play button

40 Accessibility Properties

41 Accessibility Properties Majority of attributes are now (copy) NSString NSRect accessibilityframe

42 Accessibility Properties Majority of attributes are now (copy) NSString NSRect accessibilityframe Subclasses no longer needed searchfield.accessibilitylabel = NSLocalizedString(@"play", nil); searchfield.accessibilitylinkeduielements

43

44

45 Accessibility Protocols Guide developers through implementation Covers most common types of UI

46 Pick a Protocol Button CheckBox Group Image StaticText Stepper

47 Implement the MyButtonView : NSView

48 Implement the MyButtonView : NSView

49 Implement the Protocol

50 Implement the MyButtonView - (NSString *)accessibilitylabel { return NSLocalizedStringForKey(@ play, nil); } - (BOOL)accessibilityPerformPress { [self press]; return YES;

51 Implement the MyButtonView - (NSString *)accessibilitylabel { return NSLocalizedStringForKey(@ play, nil); } - (BOOL)accessibilityPerformPress { [self press]; return YES; That is all!

52 AppKit Infers More

53 AppKit Infers More Infer isaccessibilityelement

54 AppKit Infers More Infer isaccessibilityelement Auto-populate some attributes

55 Protocols

56 NSAccessibilityElement - (NSRect)accessibilityFrame; -

57 NSAccessibilityElement - (NSRect)accessibilityFrame; NSAccessibilityButton - (NSString *)accessibilitylabel; -

58

59

60

61 NSAccessibilityElement UI without backing NSView

62 NSAccessibilityElement - (NSArray *)accessibilitychildren { if ( _accessibilitychildren == nil ) {... NSAccessibilityElement *imageelement = [NSAccessibilityElement new]; NSRect bounds = NSAccessibilityFrameInView(self, [self imagebounds]); [imageelement setaccessibilityparent:self]; [imageelement setaccessibilityrole:nsaccessibilityimagerole]; [imageelement setaccessibilitylabel:accessibilitylabel]; [imageelement setaccessibilityframe:bounds]; [_accessibilitychildren addobject:imageelement]; } return _accessibilitychildren; }

63 NSAccessibilityElement - (NSArray *)accessibilitychildren { if ( _accessibilitychildren == nil ) {... NSAccessibilityElement *imageelement = [NSAccessibilityElement new]; NSRect bounds = NSAccessibilityFrameInView(self, [self imagebounds]); [imageelement setaccessibilityparent:self]; [imageelement setaccessibilityrole:nsaccessibilityimagerole]; [imageelement setaccessibilitylabel:accessibilitylabel]; [imageelement setaccessibilityframe:bounds]; [_accessibilitychildren addobject:imageelement]; } return _accessibilitychildren; }

64 NSAccessibilityElement - (NSArray *)accessibilitychildren { if ( _accessibilitychildren == nil ) {... NSAccessibilityElement *imageelement = [NSAccessibilityElement new]; NSRect bounds = NSAccessibilityFrameInView(self, [self imagebounds]); [imageelement setaccessibilityparent:self]; [imageelement setaccessibilityrole:nsaccessibilityimagerole]; [imageelement setaccessibilitylabel:accessibilitylabel]; [imageelement setaccessibilityframe:bounds]; [_accessibilitychildren addobject:imageelement]; } return _accessibilitychildren; }

65 NSAccessibilityElement - (NSArray *)accessibilitychildren { if ( _accessibilitychildren == nil ) {... NSAccessibilityElement *imageelement = [NSAccessibilityElement new]; NSRect bounds = NSAccessibilityFrameInView(self, [self imagebounds]); [imageelement setaccessibilityparent:self]; [imageelement setaccessibilityrole:nsaccessibilityimagerole]; [imageelement setaccessibilitylabel:accessibilitylabel]; [imageelement setaccessibilityframe:bounds]; [_accessibilitychildren addobject:imageelement]; } return _accessibilitychildren; }

66 NSAccessibilityElement - (NSArray *)accessibilitychildren { if ( _accessibilitychildren == nil ) {... NSAccessibilityElement *imageelement = [NSAccessibilityElement new]; NSRect bounds = NSAccessibilityFrameInView(self, [self imagebounds]); [imageelement setaccessibilityparent:self]; [imageelement setaccessibilityrole:nsaccessibilityimagerole]; [imageelement setaccessibilitylabel:accessibilitylabel]; [imageelement setaccessibilityframe:bounds]; [_accessibilitychildren addobject:imageelement]; } return _accessibilitychildren; }

67 Already implemented accessibility?

68 Already implemented accessibility? No extra work!

69 Binary and source compatible

70 Agenda Accessibility for everyone Overview of the new Accessibility API

71 Testing

72 Accessibility Inspector

73

74

75 VoiceOver

76

77 Heading

78 Heading

79

80

81

82 VoiceOver Commands

83 VoiceOver Commands Next Item: control option

84 VoiceOver Commands Next Item: control option Previous Item: control option

85 VoiceOver Commands Next Item: control option Previous Item: control option Activate Item: control option space

86 VoiceOver Commands Next Item: control option Previous Item: control option Activate Item: control option space Enter Group: control option shift

87 VoiceOver Commands Next Item: control option Previous Item: control option Activate Item: control option space Enter Group: control option shift Leave Group: control option shift

88

89

90 VoiceOver Commands Next Item: control option Previous Item: control option Activate Item: control option space Enter Group: control option shift Leave Group: control option shift

91 Demo Tic Tac Toe Chris Dolan Accessibility Engineer

92

93 Summary Brand new, easy to use API Test with VoiceOver, Accessibility Inspector Developer examples

94 More Information Jake Behrens App Frameworks Evangelist Documentation Apple Developer Forums

95 Related Sessions Accessibility on ios Russian Hill Tuesday 3:15PM Improving the Accessibility and Usability of Complex Web Applications Marina Friday 9:00AM

96 Labs Accessibility and Speech Lab Frameworks Lab B Wednesday 10:15AM

97

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