Tabs implementation

Favicons and stuff too

SBrowser/Titlebar and URL Bar/ToolbarViewController.swift

@@ -0,0 +1,199 @@
+//
+//  ToolbarViewController.swift
+//  SBrowser
+//
+//  Created by James Magahern on 7/23/20.
+//
+
+import UIKit
+
+class ToolbarButtonView: UIView
+{
+    private var buttonPadding = CGFloat(24.0)
+    private var buttonViews: [UIView] = []
+    
+    func addButtonView(_ button: UIView) {
+        buttonViews.append(button)
+        addSubview(button)
+        setNeedsLayout()
+    }
+    
+    func removeAllButtonViews() {
+        buttonViews.forEach { $0.removeFromSuperview() }
+        buttonViews.removeAll()
+        setNeedsLayout()
+    }
+    
+    override func sizeThatFits(_ size: CGSize) -> CGSize {
+        let width: CGFloat = buttonViews.reduce(0.0) { (result, button) -> CGFloat in
+            return result + button.sizeThatFits(size).width + buttonPadding
+        }
+        
+        return CGSize(width: width, height: size.height)
+    }
+    
+    override func layoutSubviews() {
+        var buttonRect = CGRect(origin: .zero, size: CGSize(width: 0, height: bounds.height))
+        buttonRect.origin.x = layoutMargins.left
+        
+        for button in buttonViews {
+            let buttonSize = button.sizeThatFits(bounds.size)
+            buttonRect.size = CGSize(width: buttonSize.width, height: bounds.height)
+            button.frame = buttonRect
+            
+            buttonRect.origin.x += buttonRect.width + buttonPadding
+        }
+    }
+}
+
+class ToolbarView: UIView
+{
+    var urlBar: URLBar? { didSet { containerView.addSubview(urlBar!) } }
+    
+    var cancelButtonVisible: Bool = false { didSet { layoutSubviews() } }
+    
+    let containerView = UIView(frame: .zero)
+    let backgroundView = UIVisualEffectView(effect: UIBlurEffect(style: .systemThickMaterial))
+    let buttonsView = ToolbarButtonView(frame: .zero)
+    let cancelButton = UIButton(type: .system)
+    
+    convenience init()
+    {
+        self.init(frame: .zero)
+        addSubview(backgroundView)
+        addSubview(containerView)
+        
+        containerView.addSubview(buttonsView)
+        
+        cancelButton.setTitle("Cancel", for: .normal)
+        containerView.addSubview(cancelButton)
+        
+        layer.masksToBounds = false
+        layer.shadowColor = UIColor.black.cgColor
+        layer.shadowOpacity = 0.2
+        layer.shadowOffset = CGSize(width: 0.0, height: 1.0)
+        layer.shadowRadius = 1.5
+    }
+    
+    override func sizeThatFits(_ size: CGSize) -> CGSize
+    {
+        return CGSize(width: size.width, height: 44.0)
+    }
+    
+    override func layoutSubviews()
+    {
+        super.layoutSubviews()
+
+        backgroundView.frame = bounds
+        
+        var containerBounds = bounds
+        containerBounds.size.height -= safeAreaInsets.bottom
+        containerView.frame = containerBounds
+        containerView.frame = containerView.frame.insetBy(dx: 8.0, dy: 4.0)
+        
+        // Cancel button
+        let urlBarPadding: CGFloat = 8.0
+        let cancelButtonSize = cancelButton.sizeThatFits(containerView.bounds.size)
+        cancelButton.frame = CGRect(origin: CGPoint(x: (containerView.bounds.maxX - cancelButtonSize.width), y: 0),
+                                    size: CGSize(width: cancelButtonSize.width, height: containerView.bounds.height))
+        
+        // Toolbar buttons
+        let buttonContainerSize = buttonsView.sizeThatFits(containerView.bounds.size)
+        buttonsView.frame = CGRect(origin: CGPoint(x: (containerView.bounds.maxX - buttonContainerSize.width) + urlBarPadding, y: 0), size: buttonContainerSize)
+        
+        var avoidingSize: CGSize = .zero
+        if cancelButtonVisible {
+            cancelButton.alpha = 1.0
+            buttonsView.alpha = 0.0
+            
+            avoidingSize = cancelButtonSize
+        } else {
+            cancelButton.alpha = 0.0
+            buttonsView.alpha = 1.0
+            
+            avoidingSize = buttonContainerSize
+        }
+        
+        if let urlBar = urlBar {
+            urlBar.frame = CGRect(origin: .zero, size: CGSize(width: containerView.bounds.width - avoidingSize.width - urlBarPadding, height: containerView.bounds.height))
+        }
+    }
+}
+
+class ToolbarViewController: UIViewController
+{
+    let urlBar = URLBar()
+    let toolbarView = ToolbarView()
+    let scriptControllerIconView = ScriptControllerIconView()
+    let shareButton = UIButton(frame: .zero)
+    let darkModeButton = UIButton(frame: .zero)
+    let windowButton = UIButton(frame: .zero)
+    
+    var darkModeEnabled: Bool = false {
+        didSet {
+            if darkModeEnabled {
+                darkModeButton.setImage(darkModeEnabledImage, for: .normal)
+            } else {
+                darkModeButton.setImage(darkModeDisabledImage, for: .normal)
+            }
+        }
+    }
+    
+    private let darkModeDisabledImage = UIImage(systemName: "moon.circle")
+    private let darkModeEnabledImage = UIImage(systemName: "moon.circle.fill")
+    
+    init() {
+        super.init(nibName: nil, bundle: nil)
+        
+        toolbarView.urlBar = urlBar
+        
+        // Dark mode button
+        darkModeButton.setImage(darkModeDisabledImage, for: .normal)
+        
+        // Share button
+        shareButton.setImage(UIImage(systemName: "square.and.arrow.up"), for: .normal)
+        
+        // Window button
+        windowButton.setImage(UIImage(systemName: "rectangle.on.rectangle"), for: .normal)
+        
+        let toolbarAnimationDuration: TimeInterval = 0.3
+        urlBar.textField.addAction(.init(handler: { [weak self] _ in
+            guard let self = self else { return }
+            UIView.animate(withDuration: toolbarAnimationDuration) {
+                self.toolbarView.cancelButtonVisible = self.urlBar.textField.isFirstResponder
+            }
+        }), for: [ .editingDidBegin, .editingDidEnd ])
+        
+        toolbarView.cancelButton.addAction(.init(handler: { [weak self] action in
+            self?.urlBar.textField.resignFirstResponder()
+        }), for: .touchUpInside)
+        
+        traitCollectionDidChange(nil)
+    }
+    
+    override func traitCollectionDidChange(_ previousTraitCollection: UITraitCollection?) {
+        super.traitCollectionDidChange(previousTraitCollection)
+        
+        toolbarView.buttonsView.removeAllButtonViews()
+        
+        // Setup toolbar based on trait collection
+        if traitCollection.horizontalSizeClass == .compact {
+            toolbarView.buttonsView.addButtonView(darkModeButton)
+            toolbarView.buttonsView.addButtonView(scriptControllerIconView)
+            toolbarView.buttonsView.addButtonView(windowButton)
+        } else {
+            toolbarView.buttonsView.addButtonView(darkModeButton)
+            toolbarView.buttonsView.addButtonView(shareButton)
+            toolbarView.buttonsView.addButtonView(scriptControllerIconView)
+            toolbarView.buttonsView.addButtonView(windowButton)
+        }
+    }
+    
+    override func loadView() {
+        self.view = toolbarView
+    }
+    
+    required init?(coder: NSCoder) {
+        fatalError("init(coder:) has not been implemented")
+    }
+}