474 lines
20 KiB
Swift
474 lines
20 KiB
Swift
//
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// Copyright (c) 2023 Touch Instinct
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the Software), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED AS IS, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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// THE SOFTWARE.
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//
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import TISwiftUtils
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import TIUIElements
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import TIUIKitCore
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import UIKit
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import PanModal
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open class BaseModalViewController<ContentView: UIView,
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FooterContentView: UIView>: BaseInitializableViewController, PanModalPresentable {
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// MARK: - Public Properties
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public let dragView = DragView()
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public let headerView = ModalHeaderView()
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private(set) public lazy var contentView = createContentView()
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private(set) public lazy var footerView = createFooterView()
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public private(set) lazy var dragViewBottomToHeaderViewTopConstraint: NSLayoutConstraint = {
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dragView.bottomAnchor.constraint(equalTo: headerView.topAnchor)
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}()
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public private(set) lazy var dragViewBottomToContentViewTopConstraint: NSLayoutConstraint = {
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dragView.bottomAnchor.constraint(equalTo: contentView.topAnchor)
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}()
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public private(set) lazy var dragViewConstraints: SubviewConstraints = {
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let trailingConstraint = dragView.trailingAnchor.constraint(equalTo: view.trailingAnchor)
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let edgeConstraints = EdgeConstraints(leadingConstraint: dragView.leadingAnchor.constraint(equalTo: view.leadingAnchor),
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trailingConstraint: trailingConstraint,
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topConstraint: dragView.topAnchor.constraint(equalTo: view.topAnchor),
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bottomConstraint: dragViewBottomToHeaderViewTopConstraint)
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let centerXConstraint = dragView.centerXAnchor.constraint(equalTo: view.centerXAnchor)
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let centerYConstraint = dragView.centerYAnchor.constraint(equalTo: view.centerYAnchor)
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let centerConstraints = CenterConstraints(centerXConstraint: centerXConstraint,
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centerYConstraint: centerYConstraint)
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let sizeConstraints = SizeConstraints(widthConstraint: dragView.widthAnchor.constraint(equalToConstant: .zero),
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heightConstraint: dragView.heightAnchor.constraint(equalToConstant: .zero))
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return SubviewConstraints(edgeConstraints: edgeConstraints,
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centerConstraints: centerConstraints,
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sizeConstraints: sizeConstraints)
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}()
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public private(set) lazy var headerViewToSuperviewTopConstraint: NSLayoutConstraint = {
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headerView.topAnchor.constraint(equalTo: view.topAnchor)
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}()
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public private(set) lazy var headerBottomToContentTopConstraint: NSLayoutConstraint = {
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headerView.bottomAnchor.constraint(equalTo: contentView.topAnchor)
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}()
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public private(set) lazy var headerViewConstraints: SubviewConstraints = {
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let leadingConstraint = headerView.leadingAnchor.constraint(equalTo: view.leadingAnchor)
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let trailingConstraint = headerView.trailingAnchor.constraint(equalTo: view.trailingAnchor)
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let edgeConstraints = EdgeConstraints(leadingConstraint: leadingConstraint,
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trailingConstraint: trailingConstraint,
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topConstraint: dragViewBottomToHeaderViewTopConstraint,
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bottomConstraint: headerBottomToContentTopConstraint)
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let centerXConstraint = headerView.centerXAnchor.constraint(equalTo: view.centerXAnchor)
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let centerYConstraint = headerView.centerYAnchor.constraint(equalTo: view.centerYAnchor)
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let centerConstraints = CenterConstraints(centerXConstraint: centerXConstraint,
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centerYConstraint: centerYConstraint)
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let sizeConstraints = SizeConstraints(widthConstraint: headerView.widthAnchor.constraint(equalToConstant: .zero),
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heightConstraint: headerView.heightAnchor.constraint(equalToConstant: .zero))
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return SubviewConstraints(edgeConstraints: edgeConstraints,
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centerConstraints: centerConstraints,
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sizeConstraints: sizeConstraints)
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}()
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public private(set) lazy var contentViewTopToSuperviewConstraint: NSLayoutConstraint = {
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contentView.topAnchor.constraint(equalTo: view.topAnchor)
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}()
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public private(set) lazy var contentViewBottomToSuperviewConstraint: NSLayoutConstraint = {
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contentView.bottomAnchor.constraint(equalTo: view.bottomAnchor)
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}()
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public private(set) lazy var contentViewConstraints: SubviewConstraints = {
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let leadingConstraint = contentView.leadingAnchor.constraint(equalTo: view.leadingAnchor)
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let trailingConstraint = contentView.trailingAnchor.constraint(equalTo: view.trailingAnchor)
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let edgeConstraints = EdgeConstraints(leadingConstraint: leadingConstraint,
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trailingConstraint: trailingConstraint,
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topConstraint: headerBottomToContentTopConstraint,
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bottomConstraint: contentView.bottomAnchor.constraint(equalTo: view.bottomAnchor))
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let centerXConstraint = contentView.centerXAnchor.constraint(equalTo: view.centerXAnchor)
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let centerYConstraint = contentView.centerYAnchor.constraint(equalTo: view.centerYAnchor)
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let centerConstraints = CenterConstraints(centerXConstraint: centerXConstraint,
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centerYConstraint: centerYConstraint)
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let sizeConstraints = SizeConstraints(widthConstraint: contentView.widthAnchor.constraint(equalToConstant: .zero),
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heightConstraint: contentView.heightAnchor.constraint(equalToConstant: .zero))
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return SubviewConstraints(edgeConstraints: edgeConstraints,
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centerConstraints: centerConstraints,
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sizeConstraints: sizeConstraints)
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}()
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public private(set) lazy var footerViewConstraints: SubviewConstraints = {
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let leadingConstraint = footerView.leadingAnchor.constraint(equalTo: view.leadingAnchor)
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let trailingConstraint = footerView.trailingAnchor.constraint(equalTo: view.trailingAnchor)
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let edgeConstraints = EdgeConstraints(leadingConstraint: leadingConstraint,
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trailingConstraint: trailingConstraint,
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topConstraint: footerView.topAnchor.constraint(equalTo: contentView.bottomAnchor),
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bottomConstraint: footerView.bottomAnchor.constraint(equalTo: view.bottomAnchor))
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let centerXConstraint = footerView.centerXAnchor.constraint(equalTo: view.centerXAnchor)
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let centerYConstraint = footerView.centerYAnchor.constraint(equalTo: view.centerYAnchor)
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let centerConstraints = CenterConstraints(centerXConstraint: centerXConstraint,
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centerYConstraint: centerYConstraint)
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let sizeConstraints = SizeConstraints(widthConstraint: footerView.widthAnchor.constraint(equalToConstant: .zero),
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heightConstraint: footerView.heightAnchor.constraint(equalToConstant: .zero))
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return SubviewConstraints(edgeConstraints: edgeConstraints,
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centerConstraints: centerConstraints,
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sizeConstraints: sizeConstraints)
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}()
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public var keyboardDidShownObserver: NSObjectProtocol?
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public var keyboardDidHiddenObserver: NSObjectProtocol?
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// MARK: - Modal View Controller Configuration
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open var viewControllerAppearance: BaseAppearance {
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.init(backgroundColor: .white)
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}
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open var panScrollable: UIScrollView? {
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contentView as? UIScrollView
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}
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open var presentationDetents: [ModalViewPresentationDetent] {
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[.maxHeight]
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}
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open var headerViewHeight: CGFloat {
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let dragViewHeight = getHeight(of: dragView)
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let headerViewHeight = getHeight(of: headerView)
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let dragViewVerticalInsets = getDragViewVerticalInsets()
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let headerViewVerticalInsets = getHeaderViewVerticalInsets()
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return dragViewHeight + headerViewHeight + dragViewVerticalInsets + headerViewVerticalInsets
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}
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open var longFormHeight: PanModalHeight {
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let detents = getSortedDetents()
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return detents.max()?.panModalHeight(headerHeight: headerViewHeight) ?? .maxHeight
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}
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open var mediumFormHeight: PanModalHeight {
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let detents = getSortedDetents()
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if detents.count > 1 {
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return detents[1].panModalHeight(headerHeight: headerViewHeight)
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}
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return detents.first?.panModalHeight(headerHeight: headerViewHeight) ?? .maxHeight
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}
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open var shortFormHeight: PanModalHeight {
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let detents = getSortedDetents()
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return detents.min()?.panModalHeight(headerHeight: headerViewHeight) ?? .maxHeight
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}
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// MARK: - Life Cycle
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deinit {
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if let keyboardDidShownObserver {
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NotificationCenter.default.removeObserver(keyboardDidShownObserver)
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}
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if let keyboardDidHiddenObserver {
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NotificationCenter.default.removeObserver(keyboardDidHiddenObserver)
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}
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}
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open override func viewDidLayoutSubviews() {
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super.viewDidLayoutSubviews()
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adjustScrollViewIfNeeded()
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}
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// MARK: - BaseInitializableViewController
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open override func addViews() {
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super.addViews()
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view.addSubviews(dragView, headerView, contentView, footerView)
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}
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open override func configureLayout() {
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super.configureLayout()
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for view in [dragView, headerView, contentView, footerView] {
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view.translatesAutoresizingMaskIntoConstraints = false
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}
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configureDragViewLayout()
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configureHeaderViewLayout()
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configureContentViewLayout()
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configureFooterViewLayout()
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}
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open override func bindViews() {
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super.bindViews()
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keyboardDidShownObserver = NotificationCenter.default
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.addObserver(forName: UIResponder.keyboardDidShowNotification,
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object: nil,
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queue: .main) { [weak self] notification in
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self?.configureLayoutForKeyboard(notification, isKeyboardHidden: false)
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}
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keyboardDidHiddenObserver = NotificationCenter.default
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.addObserver(forName: UIResponder.keyboardDidHideNotification,
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object: nil,
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queue: .main) { [weak self] notification in
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self?.configureLayoutForKeyboard(notification, isKeyboardHidden: true)
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}
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}
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open override func configureAppearance() {
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super.configureAppearance()
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view.configureUIView(appearance: viewControllerAppearance)
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configureDragViewAppearance()
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configureHeaderViewAppearance()
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configureFooterViewAppearance()
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}
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// MARK: - Open Methods
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open func createContentView() -> ContentView {
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ContentView()
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}
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open func createFooterView() -> ModalFooterView<FooterContentView> {
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ModalFooterView<FooterContentView>()
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}
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open func configureLayoutForKeyboard(_ notification: Notification, isKeyboardHidden: Bool) {
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guard let keyboardHeight = getKeyboardHeight(notification) else {
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return
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}
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if let panScrollable {
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if isKeyboardHidden {
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adjustScrollViewIfNeeded()
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} else {
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panScrollable.contentInset = .vertical(bottom: keyboardHeight)
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}
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} else if case let .presented(footerViewAppearance) = viewControllerAppearance.footerViewState {
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let bottomInset = footerViewAppearance.layout.insets.add(\.bottom,
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to: \.bottom,
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of: .vertical(bottom: keyboardHeight))
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footerViewConstraints.edgeConstraints.bottomConstraint.constant = bottomInset
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}
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}
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open func adjustScrollViewIfNeeded() {
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guard let panScrollable, case let .presented(footerViewAppearance) = viewControllerAppearance.footerViewState else {
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return
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}
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let verticalInsets = footerViewAppearance.layout.insets.vertical(onNan: .zero)
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let subviewVerticalInsets = footerViewAppearance.subviewAppearance.layout.insets.vertical(onNan: .zero)
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let totalHeight = getHeight(of: footerView) + verticalInsets + subviewVerticalInsets
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panScrollable.contentInset = .vertical(bottom: totalHeight)
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}
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// MARK: - Private Methods
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private func configureDragViewLayout() {
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guard case let .presented(dragViewAppearance) = viewControllerAppearance.dragViewState else {
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return
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}
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let bottomConstraint: NSLayoutConstraint
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let bottomConstant: CGFloat
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if case let .presented(headerViewAppearance) = viewControllerAppearance.headerViewState {
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dragViewBottomToContentViewTopConstraint.isActive = false
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bottomConstraint = dragViewBottomToHeaderViewTopConstraint
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bottomConstant = dragViewAppearance.layout.insets.add(\.bottom,
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to: \.top,
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of: headerViewAppearance.layout.insets)
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} else {
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dragViewBottomToHeaderViewTopConstraint.isActive = false
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bottomConstraint = dragViewBottomToContentViewTopConstraint
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bottomConstant = dragViewAppearance.layout.insets.bottom
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}
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dragViewConstraints.edgeConstraints.bottomConstraint = bottomConstraint
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dragViewConstraints.update(from: dragViewAppearance.layout)
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bottomConstraint.setActiveConstantOrDeactivate(constant: bottomConstant)
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}
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private func configureHeaderViewLayout() {
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guard case let .presented(headerViewAppearance) = viewControllerAppearance.headerViewState else {
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return
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}
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let topConstraint: NSLayoutConstraint
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let topConstant: CGFloat
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if case let .presented(dragViewAppearance) = viewControllerAppearance.dragViewState {
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dragViewBottomToContentViewTopConstraint.isActive = false
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topConstraint = dragViewBottomToHeaderViewTopConstraint
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topConstant = dragViewAppearance.layout.insets.add(\.bottom,
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to: \.top,
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of: headerViewAppearance.layout.insets)
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} else {
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dragViewBottomToHeaderViewTopConstraint.isActive = false
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topConstraint = dragViewBottomToContentViewTopConstraint
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topConstant = headerViewAppearance.layout.insets.top
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}
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headerViewConstraints.edgeConstraints.topConstraint = topConstraint
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headerViewConstraints.update(from: headerViewAppearance.layout)
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topConstraint.setActiveConstantOrDeactivate(constant: topConstant)
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}
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private func configureContentViewLayout() {
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let topConstraint: NSLayoutConstraint
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let topConstant: CGFloat
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if case let .presented(headerViewAppearance) = viewControllerAppearance.headerViewState {
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dragViewBottomToContentViewTopConstraint.isActive = false
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contentViewTopToSuperviewConstraint.isActive = false
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topConstraint = headerBottomToContentTopConstraint
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topConstant = headerViewAppearance.layout.insets.bottom
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} else if case let .presented(dragViewAppearance) = viewControllerAppearance.dragViewState {
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contentViewTopToSuperviewConstraint.isActive = false
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headerBottomToContentTopConstraint.isActive = false
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topConstraint = dragViewBottomToContentViewTopConstraint
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topConstant = dragViewAppearance.layout.insets.bottom
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} else {
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headerBottomToContentTopConstraint.isActive = false
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dragViewBottomToContentViewTopConstraint.isActive = false
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topConstraint = contentViewTopToSuperviewConstraint
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topConstant = .zero
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}
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topConstraint.setActiveConstantOrDeactivate(constant: topConstant)
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contentViewConstraints.activate()
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}
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private func configureFooterViewLayout() {
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guard case let .presented(footerViewAppearance) = viewControllerAppearance.footerViewState else {
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return
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}
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footerViewConstraints.update(from: footerViewAppearance.layout)
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}
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private func configureDragViewAppearance() {
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switch viewControllerAppearance.dragViewState {
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case .hidden:
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dragView.isHidden = true
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case let .presented(appearance):
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dragView.configure(appearance: appearance)
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}
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}
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private func configureHeaderViewAppearance() {
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switch viewControllerAppearance.headerViewState {
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case .hidden:
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headerView.isHidden = true
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case let .presented(appearance):
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headerView.configure(appearance: appearance)
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}
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}
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private func configureFooterViewAppearance() {
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switch viewControllerAppearance.footerViewState {
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case .hidden:
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footerView.isHidden = true
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case let .presented(appearance):
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footerView.configureBaseWrappedViewHolder(appearance: appearance)
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}
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}
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private func getSortedDetents() -> [ModalViewPresentationDetent] {
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presentationDetents.uniqued().sorted()
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}
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private func getHeight(of view: UIView) -> CGFloat {
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guard !view.isHidden else {
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return .zero
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}
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return getFittingSize(forView: view).height
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}
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private func getDragViewVerticalInsets() -> CGFloat {
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guard case let .presented(appearance) = viewControllerAppearance.dragViewState else {
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return .zero
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}
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return appearance.layout.insets.vertical(onNan: .zero)
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}
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private func getHeaderViewVerticalInsets() -> CGFloat {
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guard case let .presented(appearance) = viewControllerAppearance.headerViewState else {
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return .zero
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}
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return appearance.layout.insets.vertical(onNan: .zero)
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}
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private func getFittingSize(forView view: UIView) -> CGSize {
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let targetSize = CGSize(width: UIScreen.main.bounds.width,
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height: UIView.layoutFittingCompressedSize.height)
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return view.systemLayoutSizeFitting(targetSize)
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}
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private func getKeyboardHeight(_ notification: Notification) -> CGFloat? {
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guard let userInfo = notification.userInfo else {
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return nil
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}
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return (userInfo[UIResponder.keyboardFrameEndUserInfoKey] as? CGRect)?.height
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}
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}
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