Change progress indicator to be a progress bar instead of the activity indicator.

iOS/Progress/UINavigationController+Progress.swift

@@ -0,0 +1,145 @@
+//
+//  UINavigationController+Progress.swift
+//  KYNavigationProgress
+//
+//  Created by kyo__hei on 2015/12/29.
+//  Copyright (c) 2015 kyo__hei. All rights reserved.
+//
+// Original project: https://github.com/ykyouhei/KYNavigationProgress
+
+import UIKit
+import Account
+
+private let constraintIdentifier = "progressHeightConstraint"
+
+public extension UINavigationController {
+	
+	/* ====================================================================== */
+	// MARK: - Properties
+	/* ====================================================================== */
+	
+	/**
+	Default is 2.0
+	*/
+	var progressHeight: CGFloat {
+		get { return progressView.frame.height }
+		set {
+			progressView.frame.origin.y = navigationBar.frame.height - newValue
+			progressView.frame.size.height = newValue
+		}
+	}
+	
+	/**
+	The color shown for the portion of the progress bar that is not filled.
+	default is clear color.
+	*/
+	var trackTintColor: UIColor? {
+		get { return progressView.trackTintColor }
+		set { progressView.trackTintColor = newValue }
+	}
+	
+	/**
+	The color shown for the portion of the progress bar that is filled.
+	default is (r: 0, g: 122, b: 225, a: 255.
+	*/
+	var progressTintColor: UIColor? {
+		get { return progressView.progressTintColor }
+		set { progressView.progressTintColor = newValue }
+	}
+	
+	/**
+	The current progress is represented by a floating-point value between 0.0 and 1.0,
+	inclusive, where 1.0 indicates the completion of the task. The default value is 0.0.
+	*/
+	var progress: Float {
+		get { return progressView.progress }
+		set { progressView.progress = newValue }
+	}
+	
+	
+	private var progressView: NavigationProgressView {
+		
+		for subview in navigationBar.subviews {
+			if let progressView = subview as? NavigationProgressView {
+				return progressView
+			}
+		}
+		
+		let defaultHeight = CGFloat(2)
+		let frame = CGRect(
+			x: 0,
+			y: navigationBar.frame.height - defaultHeight,
+			width: navigationBar.frame.width,
+			height: defaultHeight
+		)
+		let progressView = NavigationProgressView(frame: frame)
+		
+		navigationBar.addSubview(progressView)
+		
+		progressView.autoresizingMask = [
+			.flexibleWidth, .flexibleTopMargin
+		]
+		
+		
+		return progressView
+	}
+	
+	
+	/* ====================================================================== */
+	// MARK: - Public Method
+	/* ====================================================================== */
+	
+	/**
+	Adjusts the current progress shown by the receiver, optionally animating the change.
+	
+	- parameter progress: The new progress value.
+	- parameter animated: true if the change should be animated, false if the change should happen immediately.
+	*/
+	func setProgress(_ progress: Float, animated: Bool) {
+		progressView.bar.alpha = 1
+		progressView.setProgress(progress, animated: animated)
+	}
+	
+	/**
+	While progress is changed to 1.0, the bar will fade out. After that, progress will be 0.0.
+	*/
+	func finishProgress() {
+		progressView.bar.alpha = 1
+		progressView.setProgress(1, animated: true)
+		
+		UIView.animate(withDuration: 0.25,
+					   animations: {
+						self.progressView.bar.alpha = 0
+		}, completion: { finished in
+			self.progressView.progress = 0
+		}
+		)
+	}
+	
+	/**
+	While progress is changed to 0.0, the bar will fade out.
+	*/
+	func cancelProgress() {
+		progressView.setProgress(0, animated: true)
+		
+		UIView.animate(withDuration: 0.25, animations: {
+			self.progressView.bar.alpha = 0
+		})
+	}
+	
+	func updateAccountRefreshProgressIndicator() {
+		
+		let progress = AccountManager.shared.combinedRefreshProgress
+		
+		if progress.isComplete {
+			if self.progress != 0 {
+				finishProgress()
+			}
+		} else {
+			let percent = Float(progress.numberCompleted) / Float(progress.numberOfTasks)
+			setProgress(percent, animated: true)
+		}
+		
+	}
+	
+}