Browser: command+click to open things in new tabs. Uses LLKB!

App/Browser View/BrowserViewController.swift

@@ -38,6 +38,8 @@ class BrowserViewController: UIViewController, WKNavigationDelegate, WKUIDelegat
     
     private var loadError: Error?
     
+    private var commandKeyHeld: Bool = false
+    
     override var preferredStatusBarStyle: UIStatusBarStyle { .lightContent }
     
     init() {
@@ -324,6 +326,32 @@ class BrowserViewController: UIViewController, WKNavigationDelegate, WKUIDelegat
         toolbarController.traitCollectionDidChange(previousTraitCollection)
     }
     
+    private func updateCommandKeyState(forPresses presses: Set<UIPress>) {
+        guard let press = presses.first else { return }
+        
+        if let key = press.key {
+            if key.modifierFlags == [.command] {
+                let isDown = press.phase == .began || press.phase == .changed || press.phase == .stationary
+                self.commandKeyHeld = isDown
+            }
+        }
+    }
+    
+    override func pressesBegan(_ presses: Set<UIPress>, with event: UIPressesEvent?) {
+        super.pressesBegan(presses, with: event)
+        updateCommandKeyState(forPresses: presses)
+    }
+    
+    override func pressesCancelled(_ presses: Set<UIPress>, with event: UIPressesEvent?) {
+        super.pressesCancelled(presses, with: event)
+        updateCommandKeyState(forPresses: presses)
+    }
+    
+    override func pressesEnded(_ presses: Set<UIPress>, with event: UIPressesEvent?) {
+        super.pressesEnded(presses, with: event)
+        updateCommandKeyState(forPresses: presses)
+    }
+    
     private func updateScriptBlockerButton() {
         var numBlockedScripts: Int = tab.blockedScriptOrigins.count
         if tab.url != nil, tab.javaScriptEnabled == false {
@@ -411,6 +439,21 @@ class BrowserViewController: UIViewController, WKNavigationDelegate, WKUIDelegat
     
     func webView(_ webView: WKWebView, decidePolicyFor navigationAction: WKNavigationAction, preferences: WKWebpagePreferences, decisionHandler: @escaping (WKNavigationActionPolicy, WKWebpagePreferences) -> Void)
     {
+        // Handle command+click
+        if commandKeyHeld {
+            // Cancel navigation in this tab
+            decisionHandler(.cancel, preferences)
+            
+            // Start navigation in a new tab
+            let tab = tabController.createNewTab(url: navigationAction.request.url)
+            self.tab = tab
+            
+            // Reset this flag.
+            commandKeyHeld = false
+            
+            return
+        }
+        
         var allowJavaScript = tab.javaScriptEnabled
         if !allowJavaScript, let host = navigationAction.request.url?.host {
             // Check origin policy