ios-mail/Modules/App/Sources/State/AppUIStateStore.swift

// Copyright (c) 2024 Proton Technologies AG
//
// This file is part of Proton Mail.
//
// Proton Mail 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.
//
// Proton Mail 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 Proton Mail. If not, see https://www.gnu.org/licenses/.

import Foundation

/**
 Keeps the state for UI components
 */
final class AppUIStateStore: ObservableObject {
    struct SidebarState {
        var zIndex: Double
        var visibleWidth: CGFloat

        var isOpen: Bool {
            visibleWidth > .zero
        }
    }

    @Published var sidebarState: SidebarState

    let sidebarWidth: CGFloat = 320

    init(sidebarState: SidebarState = .initial) {
        self.sidebarState = sidebarState
    }

    func toggleSidebar(isOpen: Bool) {
        sidebarState.visibleWidth = isOpen ? sidebarWidth : .zero
    }
}

extension AppUIStateStore.SidebarState {

    static var initial: Self {
        .init(zIndex: .zero, visibleWidth: .zero)
    }

}