Script blocking UI works now

SBrowser/Browser View/BrowserView.swift

@@ -5,19 +5,59 @@
 //  Created by James Magahern on 7/21/20.
 //
 
+import Combine
 import UIKit
 import WebKit
 
 class BrowserView: UIView
 {
-    var webView: WKWebView? {
-        didSet { addSubview(webView!); setNeedsLayout() }
+    var toolbarView: ToolbarView? {
+        didSet { addSubview(toolbarView!) }
     }
+    
+    var webView: WKWebView? {
+        didSet {
+            if let toolbarView = toolbarView {
+                insertSubview(webView!, belowSubview: toolbarView)
+            } else {
+                addSubview(webView!)
+            }
+        }
+    }
+    
+    var keyboardWillShowObserver: AnyCancellable?
+    var keyboardWillHideObserver: AnyCancellable?
+    var keyboardLayoutOffset: CGFloat = 0 { didSet { setNeedsLayout() } }
+    
+    convenience init() {
+        self.init(frame: .zero)
         
+        keyboardWillShowObserver = NotificationCenter.default.publisher(for: UIWindow.keyboardWillShowNotification).sink { notification in
+            if let keyboardFrame = notification.userInfo?[UIWindow.keyboardFrameEndUserInfoKey] as? CGRect {
+                self.keyboardLayoutOffset = self.bounds.height - keyboardFrame.minY
+            }
+        }
+        
+        keyboardWillHideObserver = NotificationCenter.default.publisher(for: UIWindow.keyboardWillHideNotification).sink { notification in
+            if let keyboardFrame = notification.userInfo?[UIWindow.keyboardFrameEndUserInfoKey] as? CGRect {
+                self.keyboardLayoutOffset = self.bounds.height - keyboardFrame.minY
+            }
+        }
+    }
+    
     override func layoutSubviews()
     {
         super.layoutSubviews()
         webView?.frame = bounds
+        
+        if let toolbarView = toolbarView {
+            var toolbarSize = toolbarView.sizeThatFits(bounds.size)
+            if keyboardLayoutOffset == 0 {
+                toolbarSize.height += safeAreaInsets.bottom
+            }
+            
+            toolbarView.bounds = CGRect(origin: .zero, size: toolbarSize)
+            toolbarView.center = CGPoint(x: bounds.center.x, y: bounds.maxY - (toolbarView.bounds.height / 2) - keyboardLayoutOffset)
+        }
     }
-    
 }