development: navigation bar multi button support - alpha

Source/BasicCardView.swift

@@ -24,11 +24,6 @@ public class BasicCardView : MaterialCardView, Comparable {
 	//
 	internal lazy var layoutConstraints: Array<NSLayoutConstraint> = Array<NSLayoutConstraint>()
 	
-	//
-	//	:name:	views
-	//
-	internal lazy var views: Dictionary<String, AnyObject> = Dictionary<String, AnyObject>()
-	
 	/**
 		:name:	titleLabelVerticalInset
 	*/
@@ -405,6 +400,7 @@ public class BasicCardView : MaterialCardView, Comparable {
 		
 		// detect all components and create constraints
 		var verticalFormat: String = "V:|"
+		var views: Dictionary<String, AnyObject> = Dictionary<String, AnyObject>()
 		
 		// title
 		if nil != titleLabelContainer && nil != titleLabel {

Source/ImageCardView.swift

@@ -24,11 +24,6 @@ public class ImageCardView : MaterialCardView, Comparable {
 	//
 	internal lazy var layoutConstraints: Array<NSLayoutConstraint> = Array<NSLayoutConstraint>()
 	
-	//
-	//	:name:	views
-	//
-	internal lazy var views: Dictionary<String, AnyObject> = Dictionary<String, AnyObject>()
-	
 	/**
 		:name:	imageViewVerticalInset
 	*/
@@ -517,6 +512,7 @@ public class ImageCardView : MaterialCardView, Comparable {
 		
 		// detect all components and create constraints
 		var verticalFormat: String = "V:|"
+		var views: Dictionary<String, AnyObject> = Dictionary<String, AnyObject>()
 		
 		// image
 		if nil != imageViewContainer && nil != imageView {

Source/MaterialTheme.swift

@@ -27,6 +27,9 @@ extension MaterialTheme {
 	
 	public static var buttonVerticalInset: CGFloat = 6
 	public static var buttonHorizontalInset: CGFloat = 16
+	
+	public static var navigationVerticalInset: CGFloat = 8
+	public static var navigationHorizontalInset: CGFloat = 8
 }
 
 // fonts

Source/NavigationViewController.swift

@@ -20,38 +20,97 @@ import UIKit
 
 public class NavigationViewController: UIViewController {
 	//
-	//	:name:	titleLabel
+	//	:name:	layoutConstraints
 	//
+	internal lazy var layoutConstraints: Array<NSLayoutConstraint> = Array<NSLayoutConstraint>()
+	
+	/**
+		:name:	maximumTitleLabelHeight
+	*/
+	public var maximumTitleLabelHeight: CGFloat = 0 {
+		didSet {
+			prepareNavigation()
+		}
+	}
+	
+	/**
+		:name:	titleLabelContainer
+	*/
+	public private(set) var titleLabelContainer: UIView?
+	
+	/**
+		:name:	titleLabel
+	*/
 	public var titleLabel: UILabel? {
 		didSet {
-			if let v = titleLabel {
-				v.translatesAutoresizingMaskIntoConstraints = false
-				view.addSubview(v)
+			if let t = titleLabel {
+				// container
+				if nil == titleLabelContainer {
+					titleLabelContainer = UIView()
+					titleLabelContainer!.translatesAutoresizingMaskIntoConstraints = false
+					titleLabelContainer!.backgroundColor = MaterialTheme.clear.color
+					view.addSubview(titleLabelContainer!)
+				}
+				
+				// text
+				titleLabelContainer!.addSubview(t)
+				t.translatesAutoresizingMaskIntoConstraints = false
+				t.backgroundColor = MaterialTheme.clear.color
+				t.font = Roboto.regular
+				t.numberOfLines = 0
+				t.lineBreakMode = .ByTruncatingTail
+				t.textColor = MaterialTheme.white.color
+			} else {
+				titleLabelContainer?.removeFromSuperview()
+				titleLabelContainer = nil
 			}
+			prepareNavigation()
 		}
 	}
 	
 	/**
-		:name:	leftButton
+		:name:	leftButtonsContainer
 	*/
-	public var leftButton: FlatButton? {
+	public private(set) var leftButtonsContainer: UIView?
+	
+	/**
+		:name:	leftButtons
+	*/
+	public var leftButtons: Array<MaterialButton>? {
 		didSet {
-			if let v = leftButton {
-				v.translatesAutoresizingMaskIntoConstraints = false
-				view.addSubview(v)
+			if nil == leftButtons {
+				leftButtonsContainer?.removeFromSuperview()
+				leftButtonsContainer = nil
+			} else if nil == leftButtonsContainer {
+				leftButtonsContainer = UIView()
+				leftButtonsContainer!.translatesAutoresizingMaskIntoConstraints = false
+				leftButtonsContainer!.backgroundColor = MaterialTheme.clear.color
+				view.addSubview(leftButtonsContainer!)
 			}
+			prepareNavigation()
 		}
 	}
 	
 	/**
-		:name:	rightButton
+		:name:	rightButtonsContainer
 	*/
-	public var rightButton: FlatButton? {
+	public private(set) var rightButtonsContainer: UIView?
+	
+	/**
+		:name:	rightButtons
+	*/
+	public var rightButtons: Array<MaterialButton>? {
 		didSet {
-			if let v = rightButton {
-				v.translatesAutoresizingMaskIntoConstraints = false
-				view.addSubview(v)
+			if nil == rightButtons {
+				rightButtonsContainer?.removeFromSuperview()
+				rightButtonsContainer = nil
+			} else if nil == rightButtonsContainer {
+				rightButtonsContainer = UIView()
+				rightButtonsContainer!.translatesAutoresizingMaskIntoConstraints = false
+				rightButtonsContainer!.backgroundColor = MaterialTheme.clear.color
+				view.addSubview(rightButtonsContainer!)
 			}
+			prepareNavigation()
 		}
 	}
 	
@@ -69,12 +128,30 @@ public class NavigationViewController: UIViewController {
 		super.init(nibName: nil, bundle: nil)
 	}
 	
+	/**
+		:name:	init
+	*/
+	public init?(titleLabel: UILabel? = nil, leftButtons: Array<MaterialButton>? = nil, rightButtons: Array<MaterialButton>? = nil) {
+		super.init(nibName: nil, bundle: nil)
+		prepareProperties(titleLabel, leftButtons: leftButtons, rightButtons: rightButtons)
+	}
+	
+	//
+	//	:name:	prepareProperties
+	//
+	internal func prepareProperties(titleLabel: UILabel?, leftButtons: Array<MaterialButton>?, rightButtons: Array<MaterialButton>?) {
+		self.titleLabel = titleLabel
+		self.leftButtons = leftButtons
+		self.rightButtons = rightButtons
+	}
+	
 	//
 	//	:name:	viewDidLoad
 	//
 	public override func viewDidLoad() {
 		super.viewDidLoad()
 		prepareView()
+		prepareNavigation()
 	}
 	
 	/**
@@ -102,4 +179,92 @@ public class NavigationViewController: UIViewController {
 		view.layer.shadowRadius = 1
 		view.clipsToBounds = false
 	}
+	
+	//
+	//	:name:	prepareNavigation
+	//
+	internal func prepareNavigation() {
+		// clear all constraints
+		NSLayoutConstraint.deactivateConstraints(layoutConstraints)
+		layoutConstraints.removeAll(keepCapacity: false)
+		
+		// detect all components and create constraints
+		var verticalFormat: String = "V:|"
+		var horizontalFormat: String = "H:|"
+		var views: Dictionary<String, AnyObject> = Dictionary<String, AnyObject>()
+		
+		// left buttons
+		if nil != leftButtonsContainer && (nil != leftButtons) {
+			// clear for updated constraints
+			leftButtonsContainer!.removeConstraints(leftButtonsContainer!.constraints)
+			
+			//container
+			verticalFormat += "[leftButtonsContainer]"
+			horizontalFormat += "|[leftButtonsContainer]"
+			views["leftButtonsContainer"] = leftButtonsContainer!
+			
+			// leftButtons
+			var hFormat: String = "H:|"
+			var buttonViews: Dictionary<String, AnyObject> = Dictionary<String, AnyObject>()
+			for var i: Int = 0, l: Int = leftButtons!.count; i < l; ++i {
+				let button: MaterialButton = leftButtons![i]
+				leftButtonsContainer!.addSubview(button)
+				buttonViews["button\(i)"] = button
+				hFormat += "-(buttonLeftInset)-[button\(i)]"
+				Layout.expandToParentVerticallyWithPad(leftButtonsContainer!, child: button, top: 8, bottom: 8)
+			}
+			leftButtonsContainer!.addConstraints(Layout.constraint(hFormat, options: [], metrics: ["buttonLeftInset": 8], views: buttonViews))
+		}
+		
+		// title
+		if nil != titleLabelContainer && nil != titleLabel {
+			// clear for updated constraints
+			titleLabelContainer!.removeConstraints(titleLabelContainer!.constraints)
+			
+			// container
+			verticalFormat += "[titleLabelContainer]"
+			horizontalFormat += "[titleLabelContainer]"
+			views["titleLabelContainer"] = titleLabelContainer!
+			
+			// common text
+			if 0 == maximumTitleLabelHeight {
+				Layout.expandToParentWithPad(titleLabelContainer!, child: titleLabel!, top: 8, left: 8, bottom: 8, right: 8)
+			} else {
+				Layout.expandToParentHorizontallyWithPad(titleLabelContainer!, child: titleLabel!, left: 8, right: 8)
+				titleLabelContainer!.addConstraints(Layout.constraint("V:|-(titleLabelTopInset)-[titleLabel(<=maximumTitleLabelHeight)]-(titleLabelBottomInset)-|", options: [], metrics: ["titleLabelTopInset": 8, "titleLabelBottomInset": 8, "maximumTitleLabelHeight": maximumTitleLabelHeight], views: ["titleLabel": titleLabel!]))
+			}
+		}
+		
+		// left buttons
+		if nil != rightButtonsContainer && (nil != leftButtons) {
+			// clear for updated constraints
+			rightButtonsContainer!.removeConstraints(rightButtonsContainer!.constraints)
+			
+			//container
+			verticalFormat += "[rightButtonsContainer]"
+			horizontalFormat += "[rightButtonsContainer]|"
+			views["rightButtonsContainer"] = rightButtonsContainer!
+			
+			// leftButtons
+			var hFormat: String = "H:"
+			var buttonViews: Dictionary<String, AnyObject> = Dictionary<String, AnyObject>()
+			for var i: Int = 0, l: Int = leftButtons!.count; i < l; ++i {
+				let button: MaterialButton = leftButtons![i]
+				rightButtonsContainer!.addSubview(button)
+				buttonViews["button\(i)"] = button
+				hFormat += "[button\(i)]-(buttonLeftInset)-"
+				Layout.expandToParentVerticallyWithPad(rightButtonsContainer!, child: button, top: 8, bottom: 8)
+			}
+			rightButtonsContainer!.addConstraints(Layout.constraint(hFormat + "|", options: [], metrics: ["buttonLeftInset": 8], views: buttonViews))
+		}
+		
+		verticalFormat += "|"
+		
+		// combine constraints
+		if 0 < layoutConstraints.count {
+			layoutConstraints += Layout.constraint(verticalFormat, options: [], metrics: nil, views: views)
+			layoutConstraints += Layout.constraint(horizontalFormat, options: [], metrics: nil, views: views)
+			NSLayoutConstraint.activateConstraints(layoutConstraints)
+		}
+	}
 }
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