element-ios/Riot/Modules/Room/ContextualMenu/ReactionsMenu/ReactionsMenuButton.swift

/*
 Copyright 2019 New Vector Ltd

 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
 You may obtain a copy of the License at

 http://www.apache.org/licenses/LICENSE-2.0

 Unless required by applicable law or agreed to in writing, software
 distributed under the License is distributed on an "AS IS" BASIS,
 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 See the License for the specific language governing permissions and
 limitations under the License.
 */

import UIKit

class ReactionsMenuButton: UIButton {

    // MARK: Private

    private var theme: Theme!

    // MARK: - Setup

    required init?(coder aDecoder: NSCoder) {
        super.init(coder: aDecoder)
        self.commonInit()
    }

    override init(frame: CGRect) {
        super.init(frame: frame)
        self.commonInit()
    }

    // MARK: - Life cycle

    override func layoutSubviews() {
        super.layoutSubviews()
        self.layer.cornerRadius = self.frame.size.height / 2
        self.layer.borderWidth = self.isSelected ? 1 : 0
    }

    // MARK: - Private

    private func commonInit() {
        self.theme = ThemeService.shared().theme

        customizeViewRendering()
        updateView()
    }

    func customizeViewRendering() {
        self.tintColor = UIColor.clear
        
        // TODO: Color for black theme
        self.setTitleColor(self.theme.textPrimaryColor, for: .normal)
        self.setTitleColor(self.theme.textPrimaryColor, for: .selected)

        self.layer.borderColor = self.theme.tintColor.cgColor
    }

    func updateView() {
        backgroundColor = isSelected ? self.theme.tintBackgroundColor : self.theme.headerBackgroundColor
    }

    override open var isSelected: Bool {
        didSet {
            self.updateView()
        }
    }
}