What’s New in Cocoa for macOS

WWDC 2018

String Type Updates

String Enumeration to String Type

Common Prefixes

Formalized Protocols

Direct Instance Variable Access

Formal Soft Deprecation

Secure Coding ( new )

• New APIs in NSKeyedArchiver and NSKeyedUnarchiver
• Enable
  - Secure coding
  - Error returns

Secure Coding Value Transformer

Secure Coding Adoption

• Data You Can Trust ( WWDC 2018 )

Dark Mode

Supporting Dark Mode

• Link against macOS 10.14
• Use appearance-sensitive colors
• Use template images

Appearance-Sensitive NSColors

Defining Custom Colors in Asset Catalogs

Defining Template Images in Asset Catalogs

Defining Custom Images in Asset Catalogs

Desktop Pictures

Desktop Picture Aware Classes

• NSWindow
• NSScrollView
• NSTableView
• NSCollectionView

Classes and Color That Look and Taste Great Together

NSVisualEffectView

Accent Colors

NSColor Effects

Content Tint Color

• NSButton

• NSImageView

Layer Backing

• Apps linked against 10.14 will no longer use window backing stores
• Views are rendered exclusively with CALayers
• No longer necessary to set .wantsLayer = true
• AppKit handles this for you 👍
• Composition works for all cases
• Build complicated controls out of NSImageView, NSBox, NSTextField

UIViews to CALayers

NSViews to CALayers

Obsolete Patterns

Layer Backing and OpenGL ⚠️

• Implementation details for NSOpenGL are different
• OpenGL is deprecated
• Use MTKView
• Metal for OpenGL Developers ( WWDC 2018 )

Font antialiasing refinements

User Notifications Framework on macOS

• NSApplication

• UNUserNotificationCenter

• Deprecated in NSApplication

• Deprecated all of NSUserNotification

NSToolbar

NSGridView

NSTextView

• New factory methods

• Style-matching text replacement
  - Performs appropriate delegate calls
  - Unspecified attributes “filled in” by typingAttributes

Continuity Camera

• Services API on NSResponder

Custom Quick Actions

• Perform simple or complex actions
• Filter file lists or operate on file data
• Manipulate document content in place
• Accessible in many places

Building Action Bundles