passepartout-apple/Passepartout/App/Reusable/AddingTextField.swift

//
//  AddingTextField.swift
//  Passepartout
//
//  Created by Davide De Rosa on 2/26/22.
//  Copyright (c) 2022 Davide De Rosa. All rights reserved.
//
//  https://github.com/passepartoutvpn
//
//  This file is part of Passepartout.
//
//  Passepartout is free software: you can redistribute it and/or modify
//  it under the terms of the GNU General Public License as published by
//  the Free Software Foundation, either version 3 of the License, or
//  (at your option) any later version.
//
//  Passepartout is distributed in the hope that it will be useful,
//  but WITHOUT ANY WARRANTY; without even the implied warranty of
//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
//  GNU General Public License for more details.
//
//  You should have received a copy of the GNU General Public License
//  along with Passepartout.  If not, see <http://www.gnu.org/licenses/>.
//

import SwiftUI

struct AddingTextField<Field: View, ActionLabel: View>: View {
    var onAdd: (() -> Void)?

    var onCommit: (() -> Void)?

    let textField: (@escaping () -> Void) -> Field

    let addLabel: () -> ActionLabel
    
    var commitLabel: (() -> ActionLabel)?
    
    @State private var isAdding = false

    var body: some View {
        HStack {
            if isAdding {
                textField(doCommit)
                Spacer()
                if let commitLabel = commitLabel {
                    Button(action: doCommit, label: commitLabel)
                }
            } else {
                Button(action: doAdd, label: addLabel)
            }
        }
    }
    
    private func doAdd() {
        withAnimation {
            onAdd?()
            isAdding = true
        }
    }
    
    private func doCommit() {
        withAnimation {
            onCommit?()
            isAdding = false
        }
    }
}