[app] hide the last tab cell separator

Author: kirb

NewTerm/UI/TopBar/TabCollectionViewCell.swift

@@ -14,9 +14,15 @@ class TabCollectionViewCell: UICollectionViewCell {
 
 	let textLabel = UILabel()
 	let closeButton = UIButton()
+	let separatorView = UIView()
 
 	var separatorViewWidthConstraint: NSLayoutConstraint!
 
+	var isLastItem: Bool {
+		get { return separatorView.isHidden }
+		set { separatorView.isHidden = newValue }
+	}
+
 	override init(frame: CGRect) {
 		super.init(frame: frame)
 
@@ -37,15 +43,14 @@ class TabCollectionViewCell: UICollectionViewCell {
 		closeButton.alpha = 0.5
 		contentView.addSubview(closeButton)
 
-		let separatorView = UIView()
 		separatorView.translatesAutoresizingMaskIntoConstraints = false
 		separatorView.backgroundColor = UIColor(white: 85 / 255, alpha: 0.4)
 		contentView.addSubview(separatorView)
 
 		contentView.addCompactConstraints([
 			"textLabel.centerY = contentView.centerY",
 			"textLabel.left = contentView.left + 6",
-			"closeButton.width = 24",
+			"closeButton.width = 30",
 			"closeButton.height = contentView.height",
 			"closeButton.left = textLabel.right",
 			"closeButton.right = contentView.right",

NewTerm/ViewControllers/RootViewController.swift

@@ -191,6 +191,7 @@ extension RootViewController: UICollectionViewDataSource, UICollectionViewDelega
 		cell.isSelected = selectedTabIndex == indexPath.row
 		cell.closeButton.tag = indexPath.row
 		cell.closeButton.addTarget(self, action: #selector(self.removeTerminalButtonTapped(_:)), for: .touchUpInside)
+		cell.isLastItem = indexPath.row == terminals.count - 1
 		return cell
 	}