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diff --git a/iOS/PostEditor/PostBodyTextView.swift b/iOS/PostEditor/PostBodyTextView.swift
index 7530fd5..4dfa0b2 100644
--- a/iOS/PostEditor/PostBodyTextView.swift
+++ b/iOS/PostEditor/PostBodyTextView.swift
@@ -1,102 +1,124 @@
// Based on https://stackoverflow.com/a/56508132/1234545 and https://stackoverflow.com/a/48360549/1234545
import SwiftUI
class PostBodyCoordinator: NSObject, UITextViewDelegate, NSLayoutManagerDelegate {
@Binding var text: String
@Binding var isFirstResponder: Bool
+ @Binding var currentTextPosition: UITextRange?
var lineSpacingMultiplier: CGFloat
var didBecomeFirstResponder: Bool = false
var postBodyTextView: PostBodyTextView
weak var textView: UITextView?
init(
_ textView: PostBodyTextView,
text: Binding<String>,
isFirstResponder: Binding<Bool>,
+ currentTextPosition: Binding<UITextRange?>,
lineSpacingMultiplier: CGFloat
) {
self.postBodyTextView = textView
_text = text
_isFirstResponder = isFirstResponder
self.lineSpacingMultiplier = lineSpacingMultiplier
+ _currentTextPosition = currentTextPosition
}
func textViewDidChange(_ textView: UITextView) {
DispatchQueue.main.async {
self.postBodyTextView.text = textView.text ?? ""
}
}
+ func textView(_ textView: UITextView, shouldChangeTextIn range: NSRange, replacementText text: String) -> Bool {
+ self.currentTextPosition = textView.selectedTextRange
+ return true
+ }
+
+ func textViewDidBeginEditing(_ textView: UITextView) {
+ if let textPosition = currentTextPosition {
+ textView.selectedTextRange = textPosition
+ }
+ }
+
+ func textViewDidEndEditing(_ textView: UITextView) {
+ self.isFirstResponder = false
+ self.didBecomeFirstResponder = false
+ self.currentTextPosition = textView.selectedTextRange
+ }
+
func layoutManager(
_ layoutManager: NSLayoutManager,
lineSpacingAfterGlyphAt glyphIndex: Int,
withProposedLineFragmentRect rect: CGRect
) -> CGFloat {
// HACK: - This seems to be the only way to get line spacing to update dynamically on iPad
// when switching between full-screen, split-screen, and slide-over views.
if let window = UIApplication.shared.windows.filter({ $0.isKeyWindow }).first {
// Get the width of the window to determine the size class
if window.frame.width < 600 {
// Use 0.25 multiplier for compact size class
return 17 * 0.25
} else {
// Use 0.5 multiplier otherwise
return 17 * 0.5
}
} else {
return 17 * lineSpacingMultiplier
}
}
}
struct PostBodyTextView: UIViewRepresentable {
@Binding var text: String
@Binding var textStyle: UIFont
@Binding var isFirstResponder: Bool
+ @Binding var currentTextPosition: UITextRange?
@State var lineSpacing: CGFloat
func makeUIView(context: UIViewRepresentableContext<PostBodyTextView>) -> UITextView {
let textView = UITextView(frame: .zero)
textView.isEditable = true
textView.isUserInteractionEnabled = true
textView.isScrollEnabled = true
textView.alwaysBounceVertical = false
context.coordinator.textView = textView
textView.delegate = context.coordinator
textView.layoutManager.delegate = context.coordinator
let font = textStyle
let fontMetrics = UIFontMetrics(forTextStyle: .largeTitle)
textView.font = fontMetrics.scaledFont(for: font)
textView.backgroundColor = UIColor.clear
return textView
}
func makeCoordinator() -> PostBodyCoordinator {
return Coordinator(
self,
text: $text,
isFirstResponder: $isFirstResponder,
+ currentTextPosition: $currentTextPosition,
lineSpacingMultiplier: lineSpacing
)
}
func updateUIView(_ uiView: UITextView, context: UIViewRepresentableContext<PostBodyTextView>) {
uiView.text = text
let font = textStyle
let fontMetrics = UIFontMetrics(forTextStyle: .largeTitle)
uiView.font = fontMetrics.scaledFont(for: font)
// We don't want the text field to become first responder every time SwiftUI refreshes the view.
if isFirstResponder && !context.coordinator.didBecomeFirstResponder {
uiView.becomeFirstResponder()
context.coordinator.didBecomeFirstResponder = true
}
}
}
diff --git a/iOS/PostEditor/PostTextEditingView.swift b/iOS/PostEditor/PostTextEditingView.swift
index a58fbae..90a1e5c 100644
--- a/iOS/PostEditor/PostTextEditingView.swift
+++ b/iOS/PostEditor/PostTextEditingView.swift
@@ -1,102 +1,104 @@
import SwiftUI
struct PostTextEditingView: View {
@Environment(\.horizontalSizeClass) var horizontalSizeClass
@ObservedObject var post: WFAPost
@Binding var updatingTitleFromServer: Bool
@Binding var updatingBodyFromServer: Bool
@State private var appearance: PostAppearance = .serif
@State private var titleTextStyle: UIFont = UIFont(name: "Lora-Regular", size: 26)!
@State private var titleTextHeight: CGFloat = 50
@State private var titleIsFirstResponder: Bool = true
@State private var bodyTextStyle: UIFont = UIFont(name: "Lora-Regular", size: 17)!
@State private var bodyIsFirstResponder: Bool = false
+ @State private var bodyCursorPosition: UITextRange?
private let lineSpacingMultiplier: CGFloat = 0.5
init(
post: ObservedObject<WFAPost>,
updatingTitleFromServer: Binding<Bool>,
updatingBodyFromServer: Binding<Bool>
) {
self._post = post
self._updatingTitleFromServer = updatingTitleFromServer
self._updatingBodyFromServer = updatingBodyFromServer
UITextView.appearance().backgroundColor = .clear
}
var titleFieldHeight: CGFloat {
let minHeight: CGFloat = 50
if titleTextHeight < minHeight {
return minHeight
}
return titleTextHeight
}
var body: some View {
VStack {
ZStack(alignment: .topLeading) {
if post.title.count == 0 {
Text("Title (optional)")
.font(Font(titleTextStyle))
.foregroundColor(Color(UIColor.placeholderText))
.padding(.horizontal, 4)
.padding(.vertical, 8)
}
PostTitleTextView(
text: $post.title,
textStyle: $titleTextStyle,
height: $titleTextHeight,
isFirstResponder: $titleIsFirstResponder,
lineSpacing: horizontalSizeClass == .compact ? lineSpacingMultiplier / 2 : lineSpacingMultiplier
)
.frame(height: titleFieldHeight)
.onChange(of: post.title) { _ in
if post.status == PostStatus.published.rawValue && !updatingTitleFromServer {
post.status = PostStatus.edited.rawValue
}
if updatingTitleFromServer {
updatingTitleFromServer = false
}
}
}
ZStack(alignment: .topLeading) {
if post.body.count == 0 {
Text("Write…")
.font(Font(bodyTextStyle))
.foregroundColor(Color(UIColor.placeholderText))
.padding(.horizontal, 4)
.padding(.vertical, 8)
}
PostBodyTextView(
text: $post.body,
textStyle: $bodyTextStyle,
isFirstResponder: $bodyIsFirstResponder,
+ currentTextPosition: $bodyCursorPosition,
lineSpacing: horizontalSizeClass == .compact ? lineSpacingMultiplier / 2 : lineSpacingMultiplier
)
.onChange(of: post.body) { _ in
if post.status == PostStatus.published.rawValue && !updatingBodyFromServer {
post.status = PostStatus.edited.rawValue
}
if updatingBodyFromServer {
updatingBodyFromServer = false
}
}
}
}
.onChange(of: titleIsFirstResponder, perform: { _ in
self.bodyIsFirstResponder.toggle()
})
.onAppear(perform: {
switch post.appearance {
case "sans":
self.appearance = .sans
case "wrap", "mono", "code":
self.appearance = .mono
default:
self.appearance = .serif
}
self.titleTextStyle = UIFont(name: appearance.rawValue, size: 26)!
self.bodyTextStyle = UIFont(name: appearance.rawValue, size: 17)!
})
}
}
diff --git a/iOS/PostEditor/PostTitleTextView.swift b/iOS/PostEditor/PostTitleTextView.swift
index 510ea31..53d8bb8 100644
--- a/iOS/PostEditor/PostTitleTextView.swift
+++ b/iOS/PostEditor/PostTitleTextView.swift
@@ -1,126 +1,127 @@
// Based on https://lostmoa.com/blog/DynamicHeightForTextFieldInSwiftUI and https://stackoverflow.com/a/56508132/1234545
import SwiftUI
class PostTitleCoordinator: NSObject, UITextViewDelegate, NSLayoutManagerDelegate {
@Binding var text: String
@Binding var isFirstResponder: Bool
var lineSpacingMultiplier: CGFloat
var didBecomeFirstResponder: Bool = false
var postTitleTextView: PostTitleTextView
weak var textView: UITextView?
init(
_ textView: PostTitleTextView,
text: Binding<String>,
isFirstResponder: Binding<Bool>,
lineSpacingMultiplier: CGFloat
) {
self.postTitleTextView = textView
_text = text
_isFirstResponder = isFirstResponder
self.lineSpacingMultiplier = lineSpacingMultiplier
}
func textViewDidChange(_ textView: UITextView) {
DispatchQueue.main.async {
self.postTitleTextView.text = textView.text ?? ""
}
}
func textView(_ textView: UITextView, shouldChangeTextIn range: NSRange, replacementText text: String) -> Bool {
if text == "\n" {
self.isFirstResponder.toggle()
+ self.didBecomeFirstResponder = false
return false
}
return true
}
func layoutManager(
_ layoutManager: NSLayoutManager,
didCompleteLayoutFor textContainer: NSTextContainer?,
atEnd layoutFinishedFlag: Bool
) {
DispatchQueue.main.async {
guard let view = self.textView else { return }
let size = view.sizeThatFits(view.bounds.size)
if self.postTitleTextView.height != size.height {
self.postTitleTextView.height = size.height
}
}
}
func layoutManager(
_ layoutManager: NSLayoutManager,
lineSpacingAfterGlyphAt glyphIndex: Int,
withProposedLineFragmentRect rect: CGRect
) -> CGFloat {
// HACK: - This seems to be the only way to get line spacing to update dynamically on iPad
// when switching between full-screen, split-screen, and slide-over views.
if let window = UIApplication.shared.windows.filter({ $0.isKeyWindow }).first {
// Get the width of the window to determine the size class
if window.frame.width < 600 {
// Use 0.25 multiplier for compact size class
return 17 * 0.25
} else {
// Use 0.5 multiplier otherwise
return 17 * 0.5
}
} else {
return 17 * lineSpacingMultiplier
}
}
}
struct PostTitleTextView: UIViewRepresentable {
@Binding var text: String
@Binding var textStyle: UIFont
@Binding var height: CGFloat
@Binding var isFirstResponder: Bool
@State var lineSpacing: CGFloat
func makeUIView(context: UIViewRepresentableContext<PostTitleTextView>) -> UITextView {
let textView = UITextView()
textView.isEditable = true
textView.isUserInteractionEnabled = true
textView.isScrollEnabled = true
textView.alwaysBounceVertical = false
context.coordinator.textView = textView
textView.delegate = context.coordinator
textView.layoutManager.delegate = context.coordinator
let font = textStyle
let fontMetrics = UIFontMetrics(forTextStyle: .largeTitle)
textView.font = fontMetrics.scaledFont(for: font)
textView.backgroundColor = UIColor.clear
return textView
}
func makeCoordinator() -> PostTitleCoordinator {
return Coordinator(
self,
text: $text,
isFirstResponder: $isFirstResponder,
lineSpacingMultiplier: lineSpacing
)
}
func updateUIView(_ uiView: UITextView, context: UIViewRepresentableContext<PostTitleTextView>) {
uiView.text = text
let font = textStyle
let fontMetrics = UIFontMetrics(forTextStyle: .largeTitle)
uiView.font = fontMetrics.scaledFont(for: font)
// We don't want the text field to become first responder every time SwiftUI refreshes the view.
if isFirstResponder && !context.coordinator.didBecomeFirstResponder {
uiView.becomeFirstResponder()
context.coordinator.didBecomeFirstResponder = true
}
}
}

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