//
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// IQKeyboardManager+Position.swift
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// https://github.com/hackiftekhar/IQKeyboardManager
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// Copyright (c) 2013-24 Iftekhar Qurashi.
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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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import UIKit
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// swiftlint:disable file_length
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@available(iOSApplicationExtension, unavailable)
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public extension IQKeyboardManager {
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@MainActor
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private struct AssociatedKeys {
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static var movedDistance: Int = 0
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static var movedDistanceChanged: Int = 0
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static var lastScrollViewConfiguration: Int = 0
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static var startingTextViewConfiguration: Int = 0
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static var activeConfiguration: Int = 0
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}
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/**
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moved distance to the top used to maintain distance between keyboard and textField.
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Most of the time this will be a positive value.
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*/
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private(set) var movedDistance: CGFloat {
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get {
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return objc_getAssociatedObject(self, &AssociatedKeys.movedDistance) as? CGFloat ?? 0.0
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}
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set(newValue) {
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objc_setAssociatedObject(self, &AssociatedKeys.movedDistance, newValue, .OBJC_ASSOCIATION_RETAIN_NONATOMIC)
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movedDistanceChanged?(movedDistance)
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}
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}
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/**
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Will be called then movedDistance will be changed
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*/
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@objc var movedDistanceChanged: ((CGFloat) -> Void)? {
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get {
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return objc_getAssociatedObject(self, &AssociatedKeys.movedDistanceChanged) as? ((CGFloat) -> Void)
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}
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set(newValue) {
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objc_setAssociatedObject(self, &AssociatedKeys.movedDistanceChanged,
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newValue, .OBJC_ASSOCIATION_RETAIN_NONATOMIC)
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movedDistanceChanged?(movedDistance)
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}
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}
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/** Variable to save lastScrollView that was scrolled. */
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internal var lastScrollViewConfiguration: IQScrollViewConfiguration? {
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get {
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return objc_getAssociatedObject(self,
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&AssociatedKeys.lastScrollViewConfiguration) as? IQScrollViewConfiguration
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}
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set(newValue) {
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objc_setAssociatedObject(self, &AssociatedKeys.lastScrollViewConfiguration,
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newValue, .OBJC_ASSOCIATION_RETAIN_NONATOMIC)
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}
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}
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/** used to adjust contentInset of UITextView. */
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internal var startingTextViewConfiguration: IQScrollViewConfiguration? {
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get {
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return objc_getAssociatedObject(self,
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&AssociatedKeys.startingTextViewConfiguration) as? IQScrollViewConfiguration
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}
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set(newValue) {
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objc_setAssociatedObject(self, &AssociatedKeys.startingTextViewConfiguration,
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newValue, .OBJC_ASSOCIATION_RETAIN_NONATOMIC)
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}
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}
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internal func addActiveConfigurationObserver() {
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activeConfiguration.registerChange(identifier: UUID().uuidString, changeHandler: { event, _, _ in
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switch event {
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case .show:
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self.handleKeyboardTextFieldViewVisible()
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case .change:
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self.handleKeyboardTextFieldViewChanged()
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case .hide:
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self.handleKeyboardTextFieldViewHide()
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}
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})
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}
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@objc internal func applicationDidBecomeActive(_ notification: Notification) {
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guard privateIsEnabled(),
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activeConfiguration.keyboardInfo.keyboardShowing,
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activeConfiguration.isReady else {
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return
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}
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adjustPosition()
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}
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/* Adjusting RootViewController's frame according to interface orientation. */
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// swiftlint:disable cyclomatic_complexity
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// swiftlint:disable function_body_length
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internal func adjustPosition() {
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// We are unable to get textField object while keyboard showing on WKWebView's textField. (Bug ID: #11)
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guard UIApplication.shared.applicationState == .active,
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let textFieldView: UIView = activeConfiguration.textFieldViewInfo?.textFieldView,
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let superview: UIView = textFieldView.superview,
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let rootConfiguration = activeConfiguration.rootControllerConfiguration,
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let window: UIWindow = rootConfiguration.rootController.view.window else {
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return
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}
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showLog(">>>>> \(#function) started >>>>>", indentation: 1)
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let startTime: CFTimeInterval = CACurrentMediaTime()
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let rootController: UIViewController = rootConfiguration.rootController
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let textFieldViewRectInWindow: CGRect = superview.convert(textFieldView.frame, to: window)
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let textFieldViewRectInRootSuperview: CGRect = superview.convert(textFieldView.frame,
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to: rootController.view.superview)
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// Getting RootViewOrigin.
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var rootViewOrigin: CGPoint = rootController.view.frame.origin
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let keyboardDistance: CGFloat
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do {
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// Maintain keyboardDistanceFromTextField
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let specialKeyboardDistanceFromTextField: CGFloat
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if let searchBar: UIView = textFieldView.iq.textFieldSearchBar() {
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specialKeyboardDistanceFromTextField = searchBar.iq.distanceFromKeyboard
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} else {
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specialKeyboardDistanceFromTextField = textFieldView.iq.distanceFromKeyboard
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}
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if specialKeyboardDistanceFromTextField == UIView.defaultKeyboardDistance {
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keyboardDistance = keyboardDistanceFromTextField
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} else {
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keyboardDistance = specialKeyboardDistanceFromTextField
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}
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}
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let kbSize: CGSize
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let originalKbSize: CGSize = activeConfiguration.keyboardInfo.frame.size
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do {
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var kbFrame: CGRect = activeConfiguration.keyboardInfo.frame
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kbFrame.origin.y -= keyboardDistance
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kbFrame.size.height += keyboardDistance
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kbFrame.origin.y -= rootConfiguration.beginSafeAreaInsets.bottom
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kbFrame.size.height += rootConfiguration.beginSafeAreaInsets.bottom
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// (Bug ID: #469) (Bug ID: #381) (Bug ID: #1506)
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// Calculating actual keyboard covered size respect to window,
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// keyboard frame may be different when hardware keyboard is attached
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let intersectRect: CGRect = kbFrame.intersection(window.frame)
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if intersectRect.isNull {
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kbSize = CGSize(width: kbFrame.size.width, height: 0)
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} else {
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kbSize = intersectRect.size
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}
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}
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let statusBarHeight: CGFloat
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let navigationBarAreaHeight: CGFloat
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if let navigationController: UINavigationController = rootController.navigationController {
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navigationBarAreaHeight = navigationController.navigationBar.frame.maxY
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} else {
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statusBarHeight = window.windowScene?.statusBarManager?.statusBarFrame.height ?? 0
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navigationBarAreaHeight = statusBarHeight
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}
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let isScrollableTextView: Bool
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if let textView: UIScrollView = textFieldView as? UIScrollView,
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textFieldView.responds(to: #selector(getter: UITextView.isEditable)) {
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isScrollableTextView = textView.isScrollEnabled
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} else {
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isScrollableTextView = false
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}
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let directionalLayoutMargin: NSDirectionalEdgeInsets = rootController.view.directionalLayoutMargins
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let topLayoutGuide: CGFloat = CGFloat.maximum(navigationBarAreaHeight, directionalLayoutMargin.top)
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// Validation of textView for case where there is a tab bar
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// at the bottom or running on iPhone X and textView is at the bottom.
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let bottomLayoutGuide: CGFloat = isScrollableTextView ? 0 : directionalLayoutMargin.bottom
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// Move positive = textField is hidden.
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// Move negative = textField is showing.
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// Calculating move position.
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var moveUp: CGFloat
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do {
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let visibleHeight: CGFloat = window.frame.height-kbSize.height
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let topMovement: CGFloat = textFieldViewRectInRootSuperview.minY-topLayoutGuide
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let bottomMovement: CGFloat = textFieldViewRectInWindow.maxY - visibleHeight + bottomLayoutGuide
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moveUp = CGFloat.minimum(topMovement, bottomMovement)
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moveUp = CGFloat(Int(moveUp))
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}
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showLog("Need to move: \(moveUp), will be moving \(moveUp < 0 ? "down" : "up")")
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var superScrollView: UIScrollView?
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var superView: UIScrollView? = textFieldView.iq.superviewOf(type: UIScrollView.self)
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// Getting UIScrollView whose scrolling is enabled. // (Bug ID: #285)
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while let view: UIScrollView = superView {
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if view.isScrollEnabled, !view.iq.ignoreScrollingAdjustment {
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superScrollView = view
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break
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} else {
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// Getting it's superScrollView. // (Enhancement ID: #21, #24)
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superView = view.iq.superviewOf(type: UIScrollView.self)
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}
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}
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// If there was a lastScrollView. // (Bug ID: #34)
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if let lastConfiguration: IQScrollViewConfiguration = lastScrollViewConfiguration {
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// If we can't find current superScrollView, then setting lastScrollView to it's original form.
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if superScrollView == nil {
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if lastConfiguration.hasChanged {
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if lastConfiguration.scrollView.contentInset != lastConfiguration.startingContentInset {
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showLog("Restoring contentInset to: \(lastConfiguration.startingContentInset)")
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}
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if lastConfiguration.scrollView.iq.restoreContentOffset,
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!lastConfiguration.scrollView.contentOffset.equalTo(lastConfiguration.startingContentOffset) {
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showLog("Restoring contentOffset to: \(lastConfiguration.startingContentOffset)")
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}
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activeConfiguration.animate(alongsideTransition: {
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lastConfiguration.restore(for: textFieldView)
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})
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}
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self.lastScrollViewConfiguration = nil
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} else if superScrollView != lastConfiguration.scrollView {
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// If both scrollView's are different,
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// then reset lastScrollView to it's original frame and setting current scrollView as last scrollView.
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if lastConfiguration.hasChanged {
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if lastConfiguration.scrollView.contentInset != lastConfiguration.startingContentInset {
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showLog("Restoring contentInset to: \(lastConfiguration.startingContentInset)")
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}
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if lastConfiguration.scrollView.iq.restoreContentOffset,
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!lastConfiguration.scrollView.contentOffset.equalTo(lastConfiguration.startingContentOffset) {
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showLog("Restoring contentOffset to: \(lastConfiguration.startingContentOffset)")
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}
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activeConfiguration.animate(alongsideTransition: {
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lastConfiguration.restore(for: textFieldView)
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})
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}
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if let superScrollView = superScrollView {
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let configuration = IQScrollViewConfiguration(scrollView: superScrollView,
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canRestoreContentOffset: true)
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self.lastScrollViewConfiguration = configuration
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showLog("""
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Saving ScrollView New contentInset: \(configuration.startingContentInset)
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and contentOffset: \(configuration.startingContentOffset)
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""")
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} else {
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self.lastScrollViewConfiguration = nil
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}
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}
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// Else the case where superScrollView == lastScrollView means we are on same scrollView
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// after switching to different textField. So doing nothing, going ahead
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} else if let superScrollView: UIScrollView = superScrollView {
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// If there was no lastScrollView and we found a current scrollView. then setting it as lastScrollView.
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let configuration = IQScrollViewConfiguration(scrollView: superScrollView, canRestoreContentOffset: true)
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self.lastScrollViewConfiguration = configuration
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showLog("""
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Saving ScrollView New contentInset: \(configuration.startingContentInset)
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and contentOffset: \(configuration.startingContentOffset)
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""")
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}
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// Special case for ScrollView.
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// If we found lastScrollView then setting it's contentOffset to show textField.
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if let lastScrollViewConfiguration: IQScrollViewConfiguration = lastScrollViewConfiguration {
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// Saving
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var lastView: UIView = textFieldView
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var superScrollView: UIScrollView? = lastScrollViewConfiguration.scrollView
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while let scrollView: UIScrollView = superScrollView {
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var isContinue: Bool = false
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if moveUp > 0 {
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isContinue = moveUp > (-scrollView.contentOffset.y - scrollView.contentInset.top)
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} else if let tableView: UITableView = scrollView.iq.superviewOf(type: UITableView.self) {
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// Special treatment for UITableView due to their cell reusing logic
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isContinue = scrollView.contentOffset.y > 0
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if isContinue,
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let tableCell: UITableViewCell = textFieldView.iq.superviewOf(type: UITableViewCell.self),
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let indexPath: IndexPath = tableView.indexPath(for: tableCell),
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let previousIndexPath: IndexPath = tableView.previousIndexPath(of: indexPath) {
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let previousCellRect: CGRect = tableView.rectForRow(at: previousIndexPath)
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if !previousCellRect.isEmpty {
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let superview: UIView? = rootController.view.superview
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let previousCellRectInRootSuperview: CGRect = tableView.convert(previousCellRect,
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to: superview)
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moveUp = CGFloat.minimum(0, previousCellRectInRootSuperview.maxY - topLayoutGuide)
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}
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}
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} else if let collectionView = scrollView.iq.superviewOf(type: UICollectionView.self) {
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// Special treatment for UICollectionView due to their cell reusing logic
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isContinue = scrollView.contentOffset.y > 0
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if isContinue,
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let collectionCell = textFieldView.iq.superviewOf(type: UICollectionViewCell.self),
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let indexPath: IndexPath = collectionView.indexPath(for: collectionCell),
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let previousIndexPath: IndexPath = collectionView.previousIndexPath(of: indexPath),
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let attributes = collectionView.layoutAttributesForItem(at: previousIndexPath) {
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let previousCellRect: CGRect = attributes.frame
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if !previousCellRect.isEmpty {
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let superview: UIView? = rootController.view.superview
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let previousCellRectInRootSuperview: CGRect = collectionView.convert(previousCellRect,
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to: superview)
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moveUp = CGFloat.minimum(0, previousCellRectInRootSuperview.maxY - topLayoutGuide)
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}
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}
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} else {
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isContinue = textFieldViewRectInRootSuperview.minY < topLayoutGuide
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if isContinue {
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moveUp = CGFloat.minimum(0, textFieldViewRectInRootSuperview.minY - topLayoutGuide)
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}
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}
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// Looping in upper hierarchy until we don't found any scrollView then
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// in it's upper hierarchy till UIWindow object.
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if isContinue {
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var tempScrollView: UIScrollView? = scrollView.iq.superviewOf(type: UIScrollView.self)
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var nextScrollView: UIScrollView?
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while let view: UIScrollView = tempScrollView {
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if view.isScrollEnabled, !view.iq.ignoreScrollingAdjustment {
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nextScrollView = view
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break
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} else {
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tempScrollView = view.iq.superviewOf(type: UIScrollView.self)
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}
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}
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// Getting lastViewRect.
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if let lastViewRect: CGRect = lastView.superview?.convert(lastView.frame, to: scrollView) {
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// Calculating the expected Y offset from move and scrollView's contentOffset.
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let minimumMovement: CGFloat = CGFloat.minimum(scrollView.contentOffset.y, -moveUp)
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var suggestedOffsetY: CGFloat = scrollView.contentOffset.y - minimumMovement
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// Rearranging the expected Y offset according to the view.
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suggestedOffsetY = CGFloat.minimum(suggestedOffsetY, lastViewRect.minY)
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// [_textFieldView isKindOfClass:[UITextView class]] If is a UITextView type
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// nextScrollView == nil If processing scrollView is last scrollView in
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// upper hierarchy (there is no other scrollView upper hierarchy.)
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// [_textFieldView isKindOfClass:[UITextView class]] If is a UITextView type
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// suggestedOffsetY >= 0 suggestedOffsetY must be greater than in
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// order to keep distance from navigationBar (Bug ID: #92)
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if isScrollableTextView,
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nextScrollView == nil,
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suggestedOffsetY >= 0 {
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// Converting Rectangle according to window bounds.
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if let superview: UIView = textFieldView.superview {
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let currentTextFieldViewRect: CGRect = superview.convert(textFieldView.frame,
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to: window)
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// Calculating expected fix distance which needs to be managed from navigation bar
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let expectedFixDistance: CGFloat = currentTextFieldViewRect.minY - topLayoutGuide
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// Now if expectedOffsetY (scrollView.contentOffset.y + expectedFixDistance)
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// is lower than current suggestedOffsetY, which means we're in a position where
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// navigationBar up and hide, then reducing suggestedOffsetY with expectedOffsetY
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// (scrollView.contentOffset.y + expectedFixDistance)
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let expectedOffsetY: CGFloat = scrollView.contentOffset.y + expectedFixDistance
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suggestedOffsetY = CGFloat.minimum(suggestedOffsetY, expectedOffsetY)
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// Setting move to 0 because now we don't want to move any view anymore
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// (All will be managed by our contentInset logic.
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moveUp = 0
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} else {
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// Subtracting the Y offset from the move variable,
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// because we are going to change scrollView's contentOffset.y to suggestedOffsetY.
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moveUp -= (suggestedOffsetY-scrollView.contentOffset.y)
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}
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} else {
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// Subtracting the Y offset from the move variable,
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// because we are going to change scrollView's contentOffset.y to suggestedOffsetY.
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moveUp -= (suggestedOffsetY-scrollView.contentOffset.y)
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}
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let newContentOffset: CGPoint = CGPoint(x: scrollView.contentOffset.x, y: suggestedOffsetY)
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if !scrollView.contentOffset.equalTo(newContentOffset) {
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showLog("""
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old contentOffset: \(scrollView.contentOffset)
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new contentOffset: \(newContentOffset)
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""")
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self.showLog("Remaining Move: \(moveUp)")
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// Getting problem while using `setContentOffset:animated:`, So I used animation API.
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activeConfiguration.animate(alongsideTransition: {
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// (Bug ID: #1365, #1508, #1541)
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let stackView: UIStackView? = textFieldView.iq.superviewOf(type: UIStackView.self,
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belowView: scrollView)
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// (Bug ID: #1901, #1996)
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let animatedContentOffset: Bool = stackView != nil ||
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scrollView is UICollectionView ||
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scrollView is UITableView
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if animatedContentOffset {
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scrollView.setContentOffset(newContentOffset, animated: UIView.areAnimationsEnabled)
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} else {
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scrollView.contentOffset = newContentOffset
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}
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}, completion: {
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if scrollView is UITableView || scrollView is UICollectionView {
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// This will update the next/previous states
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self.reloadInputViews()
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}
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})
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}
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}
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// Getting next lastView & superScrollView.
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lastView = scrollView
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superScrollView = nextScrollView
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} else {
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moveUp = 0
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break
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}
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}
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// Updating contentInset
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let lastScrollView = lastScrollViewConfiguration.scrollView
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if let lastScrollViewRect: CGRect = lastScrollView.superview?.convert(lastScrollView.frame, to: window),
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!lastScrollView.iq.ignoreContentInsetAdjustment {
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var bottomInset: CGFloat = (kbSize.height)-(window.frame.height-lastScrollViewRect.maxY)
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let keyboardAndSafeArea: CGFloat = keyboardDistance + rootConfiguration.beginSafeAreaInsets.bottom
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var bottomScrollIndicatorInset: CGFloat = bottomInset - keyboardAndSafeArea
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// Update the insets so that the scrollView doesn't shift incorrectly
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// when the offset is near the bottom of the scroll view.
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bottomInset = CGFloat.maximum(lastScrollViewConfiguration.startingContentInset.bottom, bottomInset)
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let startingScrollInset: UIEdgeInsets = lastScrollViewConfiguration.startingScrollIndicatorInsets
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bottomScrollIndicatorInset = CGFloat.maximum(startingScrollInset.bottom,
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bottomScrollIndicatorInset)
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bottomInset -= lastScrollView.safeAreaInsets.bottom
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bottomScrollIndicatorInset -= lastScrollView.safeAreaInsets.bottom
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var movedInsets: UIEdgeInsets = lastScrollView.contentInset
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movedInsets.bottom = bottomInset
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if lastScrollView.contentInset != movedInsets {
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showLog("old ContentInset: \(lastScrollView.contentInset) new ContentInset: \(movedInsets)")
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activeConfiguration.animate(alongsideTransition: {
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lastScrollView.contentInset = movedInsets
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lastScrollView.layoutIfNeeded() // (Bug ID: #1996)
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var newScrollIndicatorInset: UIEdgeInsets = lastScrollView.verticalScrollIndicatorInsets
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newScrollIndicatorInset.bottom = bottomScrollIndicatorInset
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lastScrollView.scrollIndicatorInsets = newScrollIndicatorInset
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})
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}
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}
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}
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// Going ahead. No else if.
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// Special case for UITextView
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// (Readjusting textView.contentInset when textView hight is too big to fit on screen)
|
// _lastScrollView If not having inside any scrollView, now contentInset manages the full screen textView.
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// [_textFieldView isKindOfClass:[UITextView class]] If is a UITextView type
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if isScrollableTextView, let textView = textFieldView as? UIScrollView {
|
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let keyboardYPosition: CGFloat = window.frame.height - originalKbSize.height
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var rootSuperViewFrameInWindow: CGRect = window.frame
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if let rootSuperview: UIView = rootController.view.superview {
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rootSuperViewFrameInWindow = rootSuperview.convert(rootSuperview.bounds, to: window)
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}
|
|
let keyboardOverlapping: CGFloat = rootSuperViewFrameInWindow.maxY - keyboardYPosition
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let availableHeight: CGFloat = rootSuperViewFrameInWindow.height-topLayoutGuide-keyboardOverlapping
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let textViewHeight: CGFloat = CGFloat.minimum(textView.frame.height, availableHeight)
|
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if textView.frame.size.height-textView.contentInset.bottom>textViewHeight {
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// If frame is not change by library in past, then saving user textView properties (Bug ID: #92)
|
if startingTextViewConfiguration == nil {
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startingTextViewConfiguration = IQScrollViewConfiguration(scrollView: textView,
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canRestoreContentOffset: false)
|
}
|
|
var newContentInset: UIEdgeInsets = textView.contentInset
|
newContentInset.bottom = textView.frame.size.height-textViewHeight
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newContentInset.bottom -= textView.safeAreaInsets.bottom
|
|
if textView.contentInset != newContentInset {
|
self.showLog("""
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\(textFieldView) Old UITextView.contentInset: \(textView.contentInset)
|
New UITextView.contentInset: \(newContentInset)
|
""")
|
|
activeConfiguration.animate(alongsideTransition: {
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textView.contentInset = newContentInset
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textView.layoutIfNeeded() // (Bug ID: #1996)
|
textView.scrollIndicatorInsets = newContentInset
|
})
|
}
|
}
|
}
|
|
// +Positive or zero.
|
if moveUp >= 0 {
|
|
rootViewOrigin.y = CGFloat.maximum(rootViewOrigin.y - moveUp, CGFloat.minimum(0, -originalKbSize.height))
|
|
if !rootController.view.frame.origin.equalTo(rootViewOrigin) {
|
showLog("Moving Upward")
|
|
activeConfiguration.animate(alongsideTransition: {
|
|
var rect: CGRect = rootController.view.frame
|
rect.origin = rootViewOrigin
|
rootController.view.frame = rect
|
|
// Animating content if needed (Bug ID: #204)
|
if self.layoutIfNeededOnUpdate {
|
// Animating content (Bug ID: #160)
|
rootController.view.setNeedsLayout()
|
rootController.view.layoutIfNeeded()
|
}
|
|
let classNameString: String = "\(type(of: rootController.self))"
|
self.showLog("Set \(classNameString) origin to: \(rootViewOrigin)")
|
})
|
}
|
|
movedDistance = (rootConfiguration.beginOrigin.y-rootViewOrigin.y)
|
} else { // -Negative
|
let disturbDistance: CGFloat = rootViewOrigin.y-rootConfiguration.beginOrigin.y
|
|
// disturbDistance Negative = frame disturbed.
|
// disturbDistance positive = frame not disturbed.
|
if disturbDistance <= 0 {
|
|
rootViewOrigin.y -= CGFloat.maximum(moveUp, disturbDistance)
|
|
if !rootController.view.frame.origin.equalTo(rootViewOrigin) {
|
showLog("Moving Downward")
|
// Setting adjusted rootViewRect
|
// Setting adjusted rootViewRect
|
|
activeConfiguration.animate(alongsideTransition: {
|
|
var rect: CGRect = rootController.view.frame
|
rect.origin = rootViewOrigin
|
rootController.view.frame = rect
|
|
// Animating content if needed (Bug ID: #204)
|
if self.layoutIfNeededOnUpdate {
|
// Animating content (Bug ID: #160)
|
rootController.view.setNeedsLayout()
|
rootController.view.layoutIfNeeded()
|
}
|
|
let classNameString: String = "\(type(of: rootController.self))"
|
self.showLog("Set \(classNameString) origin to: \(rootViewOrigin)")
|
})
|
}
|
|
movedDistance = (rootConfiguration.beginOrigin.y-rootViewOrigin.y)
|
}
|
}
|
|
let elapsedTime: CFTimeInterval = CACurrentMediaTime() - startTime
|
showLog("<<<<< \(#function) ended: \(elapsedTime) seconds <<<<<", indentation: -1)
|
}
|
// swiftlint:enable cyclomatic_complexity
|
// swiftlint:enable function_body_length
|
|
// swiftlint:disable cyclomatic_complexity
|
// swiftlint:disable function_body_length
|
internal func restorePosition() {
|
|
// Setting rootViewController frame to it's original position. // (Bug ID: #18)
|
guard let configuration: IQRootControllerConfiguration = activeConfiguration.rootControllerConfiguration else {
|
return
|
}
|
let startTime: CFTimeInterval = CACurrentMediaTime()
|
showLog(">>>>> \(#function) started >>>>>", indentation: 1)
|
|
activeConfiguration.animate(alongsideTransition: {
|
if configuration.hasChanged {
|
let classNameString: String = "\(type(of: configuration.rootController.self))"
|
self.showLog("Restoring \(classNameString) origin to: \(configuration.beginOrigin)")
|
}
|
configuration.restore()
|
|
// Animating content if needed (Bug ID: #204)
|
if self.layoutIfNeededOnUpdate {
|
// Animating content (Bug ID: #160)
|
configuration.rootController.view.setNeedsLayout()
|
configuration.rootController.view.layoutIfNeeded()
|
}
|
})
|
|
// Restoring the contentOffset of the lastScrollView
|
if let lastConfiguration: IQScrollViewConfiguration = lastScrollViewConfiguration {
|
let textFieldView: UIView? = activeConfiguration.textFieldViewInfo?.textFieldView
|
|
activeConfiguration.animate(alongsideTransition: {
|
|
if lastConfiguration.hasChanged {
|
if lastConfiguration.scrollView.contentInset != lastConfiguration.startingContentInset {
|
self.showLog("Restoring contentInset to: \(lastConfiguration.startingContentInset)")
|
}
|
|
if lastConfiguration.scrollView.iq.restoreContentOffset,
|
!lastConfiguration.scrollView.contentOffset.equalTo(lastConfiguration.startingContentOffset) {
|
self.showLog("Restoring contentOffset to: \(lastConfiguration.startingContentOffset)")
|
}
|
|
lastConfiguration.restore(for: textFieldView)
|
}
|
|
// This is temporary solution. Have to implement the save and restore scrollView state
|
var superScrollView: UIScrollView? = lastConfiguration.scrollView
|
|
while let scrollView: UIScrollView = superScrollView {
|
|
let width: CGFloat = CGFloat.maximum(scrollView.contentSize.width, scrollView.frame.width)
|
let height: CGFloat = CGFloat.maximum(scrollView.contentSize.height, scrollView.frame.height)
|
let contentSize: CGSize = CGSize(width: width, height: height)
|
|
let minimumY: CGFloat = contentSize.height - scrollView.frame.height
|
|
if minimumY < scrollView.contentOffset.y {
|
|
let newContentOffset: CGPoint = CGPoint(x: scrollView.contentOffset.x, y: minimumY)
|
if !scrollView.contentOffset.equalTo(newContentOffset) {
|
|
// (Bug ID: #1365, #1508, #1541)
|
let stackView: UIStackView? = textFieldView?.iq.superviewOf(type: UIStackView.self,
|
belowView: scrollView)
|
|
// (Bug ID: #1901, #1996)
|
let animatedContentOffset: Bool = stackView != nil ||
|
scrollView is UICollectionView ||
|
scrollView is UITableView
|
|
if animatedContentOffset {
|
scrollView.setContentOffset(newContentOffset, animated: UIView.areAnimationsEnabled)
|
} else {
|
scrollView.contentOffset = newContentOffset
|
}
|
|
self.showLog("Restoring contentOffset to: \(newContentOffset)")
|
}
|
}
|
|
superScrollView = scrollView.iq.superviewOf(type: UIScrollView.self)
|
}
|
})
|
}
|
|
self.movedDistance = 0
|
let elapsedTime: CFTimeInterval = CACurrentMediaTime() - startTime
|
showLog("<<<<< \(#function) ended: \(elapsedTime) seconds <<<<<", indentation: -1)
|
}
|
// swiftlint:enable cyclomatic_complexity
|
// swiftlint:enable function_body_length
|
}
|
