More text-related APIs

Sources/NSUI/TextView.swift

@@ -18,6 +18,20 @@ extension NSTextView {
 @available(*, deprecated, renamed: "NSTextStorage.EditActions")
 public typealias NSUITextStorageEditActions = NSTextStorage.EditActions
 
+extension NSLayoutManager {
+	public func replaceTextStorage(_ newTextStorage: NSTextStorage) {
+		textStorage?.removeLayoutManager(self)
+
+		for manager in textStorage?.layoutManagers ?? [] {
+			manager.textStorage = newTextStorage
+		}
+
+		newTextStorage.addLayoutManager(self)
+
+		textStorage = newTextStorage
+	}
+}
+
 #endif
 
 extension NSUITextView {
@@ -28,11 +42,47 @@ extension NSUITextView {
 		layoutManager
 	}
 
+	/// NSUI wrapper around `textStorage` property.
+	///
+	/// This value can be nil on macOS.
+	public var nsuiTextStorage: NSTextStorage? {
+		textStorage
+	}
+
+	@available(iOS 15.0, macOS 12.0, tvOS 15.0, *)
+	public var nsuiTextContentStorage: NSTextContentStorage? {
+#if canImport(AppKit) && !targetEnvironment(macCatalyst)
+		textContentStorage
+#else
+		textContainer.textLayoutManager?.textContentManager as? NSTextContentStorage
+#endif
+	}
+
+	/// NSUI wrapper around `textContainer` property.
+	///
+	/// This value can be nil on macOS.
+	public var nsuiTextContainer: NSTextContainer? {
+		textContainer
+	}
+
 	public var nsuiSelectedRange: NSRange {
 #if canImport(AppKit) && !targetEnvironment(macCatalyst)
 		selectedRange()
 #else
 		selectedRange
 #endif
 	}
+
+#if canImport(UIKit)
+	public var selectedRanges: [NSValue] {
+		get {
+			[NSValue(range: selectedRange)]
+		}
+		set {
+			if let range = newValue.first?.rangeValue {
+				selectedRange = range
+			}
+		}
+	}
+#endif
 }