What’s New in Safari Extensions

Distributable via

• App on App Store (show up immediately in Safari)

• App on your web site after running through the notarization service (show up in Safari after first launch of the app)

Unsigned Extensions must be allowed each time Safari is run from the Developer menu

ContentBlocker can now tell Safari App Extensions bout its activity

Page Navigation Delegate informs about navigating/redirect to new site

Adopting ContentBlocker and PageNavigation extensions allows

• replacing arbitrary content on websites

• updating toolbar icon badge, e.g. with content items blocked count

• blocking certain content from web sites you browse on

Screenshots of web sites are now possible

Tab, Window, Page management

• Get base URI from native code without injection of script

• Directly navigate to certain tabs without scripting from the extension

• All open tabs and windows are visible from an extension

Popovers can be shown/dismissed programmatically

Communication between App and Extension

• Possible by NSXPCConnection (extension and app must be part of the same app group)

• Share data by using UserDefaults(suiteName:)

• Sending messages from app >>> extension: SFSafariApplication.dispatchMessage

• Receive message in extension by implementing SFSafariExtensionHandling.messageReceivedFromContainingApp (Possible also when safari is not running - launched eventually)