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.