Channel statistics improvements

submodules/GraphUI/Sources/ChartVisibilityItemView.swift

@@ -0,0 +1,96 @@
+//
+//  ChartVisibilityItemCell.swift
+//  GraphTest
+//
+//  Created by Andrei Salavei on 4/7/19.
+//  Copyright © 2019 Andrei Salavei. All rights reserved.
+//
+
+import UIKit
+import GraphCore
+
+class ChartVisibilityItemView: UIView {
+    static let textFont = UIFont.systemFont(ofSize: 14, weight: .medium)
+
+    let checkButton: UIButton = UIButton(type: .system)
+    
+    override init(frame: CGRect) {
+        super.init(frame: frame)
+        
+        setupView()
+    }
+    
+    required init?(coder aDecoder: NSCoder) {
+        super.init(coder: aDecoder)
+    }
+    
+    override func awakeFromNib() {
+        super.awakeFromNib()
+        setupView()
+    }
+    
+    func setupView() {
+        checkButton.frame = bounds
+        checkButton.titleLabel?.font = ChartVisibilityItemView.textFont
+        checkButton.layer.cornerRadius = 6
+        checkButton.layer.masksToBounds = true
+        checkButton.addTarget(self, action: #selector(didTapButton), for: .touchUpInside)
+        let pressRecognizer = UILongPressGestureRecognizer(target: self, action: #selector(didRecognizedLongPress(recognizer:)))
+        pressRecognizer.cancelsTouchesInView = true
+        checkButton.addGestureRecognizer(pressRecognizer)
+        addSubview(checkButton)
+    }
+    
+    var tapClosure: (() -> Void)?
+    var longTapClosure: (() -> Void)?
+
+    private func updateStyle(animated: Bool) {
+        guard let item = item else {
+            return
+        }
+        UIView.perform(animated: animated, animations: {
+            if self.isChecked {
+                self.checkButton.setTitleColor(.white, for: .normal)
+                self.checkButton.backgroundColor = item.color
+                self.checkButton.layer.borderColor = nil
+                self.checkButton.layer.borderWidth = 0
+                self.checkButton.setTitle("✓ " + item.title, for: .normal)
+            } else {
+                self.checkButton.backgroundColor = .clear
+                self.checkButton.layer.borderColor = item.color.cgColor
+                self.checkButton.layer.borderWidth = 1
+                self.checkButton.setTitleColor(item.color, for: .normal)
+                self.checkButton.setTitle(item.title, for: .normal)
+            }
+
+        })
+    }
+    
+    override func layoutSubviews() {
+        super.layoutSubviews()
+        
+        checkButton.frame = bounds
+    }
+    
+    @objc private func didTapButton() {
+        tapClosure?()
+    }
+
+    @objc private func didRecognizedLongPress(recognizer: UIGestureRecognizer) {
+        if recognizer.state == .began {
+            longTapClosure?()
+        }
+    }
+    
+    var item: ChartVisibilityItem? = nil {
+        didSet {
+            updateStyle(animated: false)
+        }
+    }
+    
+    private(set) var isChecked: Bool = true
+    func setChecked(isChecked: Bool, animated: Bool) {
+        self.isChecked = isChecked
+        updateStyle(animated: true)
+    }
+}