| name | safari-extension |
| description | Safari Web Extension: SFSafariExtensionHandler, content scripts, web resources, native-web messaging. Use when building a Safari browser extension, injecting content scripts into web pages, or communicating between native app and Safari. Triggers: Safari extension, SFSafariExtensionHandler, content script, browser extension. |
Safari Extension
SAFARI WEB EXTENSION:
SETUP: Requires separate extension target (kind: "safari" in plan extensions array).
Safari Web Extensions use web technologies (JS/HTML/CSS) plus a native Swift wrapper.
SWIFT EXTENSION HANDLER (optional — for native communication):
class SafariExtensionHandler: SFSafariExtensionHandler {
// Called when toolbar button is clicked
override func toolbarItemClicked(in window: SFSafariWindow) {
window.getActiveTab { tab in
tab?.getActivePage { page in
page?.dispatchMessageToScript(withName: "buttonClicked", userInfo: [:])
}
}
}
// Receive messages from JavaScript content scripts
override func messageReceived(withName messageName: String, from page: SFSafariPage, userInfo: [String: Any]?) {
// Handle message from JS: page.dispatchMessageToExtension(...)
}
}
INFO.PLIST KEYS (extension):
NSExtensionPrincipalClass: $(PRODUCT_MODULE_NAME).SafariExtensionHandler
NSExtensionAttributes:
SFSafariWebsiteAccess: { Level: All }
WEB EXTENSION RESOURCES (in extension bundle):
- manifest.json (Web Extension manifest v3)
- background.js (service worker)
- content.js (injected into pages)
- popup.html (toolbar popup)
ENABLE IN SAFARI: User must enable in Safari → Settings → Extensions.
