94 lines
3.6 KiB
Swift
94 lines
3.6 KiB
Swift
//
|
|
// Copyright 2020 Signal Messenger, LLC
|
|
// SPDX-License-Identifier: AGPL-3.0-only
|
|
//
|
|
|
|
import SafariServices
|
|
import SignalServiceKit
|
|
|
|
public class LinkingTextView: UITextView {
|
|
|
|
public var shouldInteractWithURLOverride: ((URL) -> Bool)?
|
|
|
|
/// Creates a text view with the provided action in place of opening
|
|
/// tapped links. If there are multiple links and you want to perform
|
|
/// a different action depending on which was tapped, use
|
|
/// ``LinkingTextView/init(shouldInteractWithURL:)``.
|
|
public convenience init(overrideLinkAction: @escaping () -> Void) {
|
|
self.init { url in
|
|
overrideLinkAction()
|
|
return false
|
|
}
|
|
}
|
|
|
|
/// Creates a text view with a closure for determining what to do with tapped links.
|
|
public convenience init(shouldInteractWithURL: @escaping (URL) -> Bool) {
|
|
self.init()
|
|
self.shouldInteractWithURLOverride = shouldInteractWithURL
|
|
}
|
|
|
|
public override init(frame: CGRect, textContainer: NSTextContainer?) {
|
|
super.init(frame: frame, textContainer: textContainer)
|
|
|
|
self.disableAiWritingTools()
|
|
|
|
backgroundColor = .clear
|
|
isOpaque = false
|
|
isEditable = false
|
|
textContainerInset = .zero
|
|
contentInset = .zero
|
|
self.textContainer.lineFragmentPadding = 0
|
|
isScrollEnabled = false
|
|
delegate = self
|
|
}
|
|
|
|
@available(*, unavailable)
|
|
required init?(coder: NSCoder) {
|
|
fatalError("init(coder:) has not been implemented")
|
|
}
|
|
|
|
// required to prevent blue background selection from any situation
|
|
override public var selectedTextRange: UITextRange? {
|
|
get { return nil }
|
|
set {}
|
|
}
|
|
|
|
// disables unwanted UIGestureRecognizer from UITextView
|
|
// to prevent selection, magnification, etc. while still
|
|
// allowing links to be interactable.
|
|
// https://stackoverflow.com/a/49428307/1033581
|
|
override public func gestureRecognizerShouldBegin(_ gestureRecognizer: UIGestureRecognizer) -> Bool {
|
|
if gestureRecognizer is UIPanGestureRecognizer {
|
|
// required for compatibility with isScrollEnabled
|
|
return super.gestureRecognizerShouldBegin(gestureRecognizer)
|
|
}
|
|
if let tapGestureRecognizer = gestureRecognizer as? UITapGestureRecognizer,
|
|
tapGestureRecognizer.numberOfTapsRequired == 1 {
|
|
// required for compatibility with links
|
|
return super.gestureRecognizerShouldBegin(gestureRecognizer)
|
|
}
|
|
// allowing smallDelayRecognizer for links
|
|
// https://stackoverflow.com/questions/46143868/xcode-9-uitextview-links-no-longer-clickable
|
|
if let longPressGestureRecognizer = gestureRecognizer as? UILongPressGestureRecognizer,
|
|
// comparison value is used to distinguish between 0.12 (smallDelayRecognizer) and 0.5 (textSelectionForce and textLoupe)
|
|
longPressGestureRecognizer.minimumPressDuration < 0.325 {
|
|
return super.gestureRecognizerShouldBegin(gestureRecognizer)
|
|
}
|
|
// preventing selection from loupe/magnifier (_UITextSelectionForceGesture), multi tap, tap and a half, etc.
|
|
gestureRecognizer.isEnabled = false
|
|
return false
|
|
}
|
|
}
|
|
|
|
extension LinkingTextView: UITextViewDelegate {
|
|
|
|
public func textView(_ textView: UITextView, shouldInteractWith url: URL, in characterRange: NSRange, interaction: UITextItemInteraction) -> Bool {
|
|
if let shouldInteractWithURLOverride {
|
|
return shouldInteractWithURLOverride(url)
|
|
}
|
|
|
|
let vc = SFSafariViewController(url: url)
|
|
CurrentAppContext().frontmostViewController()?.present(vc, animated: true, completion: nil)
|
|
return false
|
|
}
|
|
}
|