SwiftFormat/EditorExtension/Application/Source/RuleSelectionTableCellView.swift

//
//  RuleSelectionTableCellView.swift
//  SwiftFormat for Xcode
//
//  Created by Vincent Bernier on 28-01-18.
//  Copyright © 2018 Nick Lockwood.
//
//  Distributed under the permissive MIT license
//  Get the latest version from here:
//
//  https://github.com/nicklockwood/SwiftFormat
//
//  Permission is hereby granted, free of charge, to any person obtaining a copy
//  of this software and associated documentation files (the "Software"), to deal
//  in the Software without restriction, including without limitation the rights
//  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
//  copies of the Software, and to permit persons to whom the Software is
//  furnished to do so, subject to the following conditions:
//
//  The above copyright notice and this permission notice shall be included in all
//  copies or substantial portions of the Software.
//
//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
//  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
//  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
//  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
//  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
//  SOFTWARE.
//

import Cocoa

class RuleSelectionTableCellView: NSTableCellView {

    static let defaultIdentifier = NSUserInterfaceItemIdentifier.ruleSelectionTableCellView

    class func register(with tableView: NSTableView, forIdentifier identifier: NSUserInterfaceItemIdentifier = defaultIdentifier) {
        let nib = NSNib(nibNamed: NSNib.Name("RuleSelectionTableCellView"), bundle: nil)
        tableView.register(nib, forIdentifier: identifier)
    }

    @IBOutlet var button: NSButton! {
        didSet {
            button.target = self
            button.action = #selector(buttonAction(_:))
            font = button.font!
        }
    }

    private var font: NSFont!
    private var titleAttributedStringAttribute: [NSAttributedStringKey: Any] {
        let paragraphStyle = NSMutableParagraphStyle()
        let spacing: CGFloat = 12.0
        paragraphStyle.firstLineHeadIndent = spacing
        paragraphStyle.headIndent = spacing

        return [
            NSAttributedStringKey.paragraphStyle: paragraphStyle,
            NSAttributedStringKey.font: button.font!,
        ]
    }

    @objc func buttonAction(_ sender: NSButton) {
        guard let model = objectValue as? RulesViewController.RuleViewModel else {
            return
        }
        model.isEnabled = sender.state == .on
    }

    override var objectValue: Any? {
        didSet {
            guard let model = objectValue as? RulesViewController.RuleViewModel else {
                return
            }

            button.attributedTitle = NSAttributedString(string: model.name,
                                                        attributes: titleAttributedStringAttribute)
            button.state = model.isEnabled ? .on : .off
        }
    }
}

extension NSUserInterfaceItemIdentifier {
    static let ruleSelectionTableCellView = NSUserInterfaceItemIdentifier(rawValue: "RuleSelectionTableCellView")
}