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allow customisation of underlying NS/UI TextView #56

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27 changes: 21 additions & 6 deletions Sources/CodeEditorView/CodeEditor.swift
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Original file line number Diff line number Diff line change
Expand Up @@ -8,6 +8,12 @@
import SwiftUI


#if os(iOS)
public typealias CETextView = UITextView
#elseif os(macOS)
public typealias CETextView = NSTextView
#endif

/// SwiftUI code editor based on TextKit.
///
/// SwiftUI `Environment`:
Expand Down Expand Up @@ -64,6 +70,7 @@ public struct CodeEditor {

let language: LanguageConfiguration
let layout : LayoutConfiguration
let customiser:((CETextView) -> Void)?

@Binding private var text: String
@Binding private var position: Position
Expand All @@ -79,18 +86,21 @@ public struct CodeEditor {
/// simultaneous messages and they shouldn't change to frequently.
/// - language: Language configuration for highlighting and similar.
/// - layout: Layout configuration determining the visible elements of the editor view.
/// - customiser: Optional block to customise the underlying textView. For example to disable editing or selection.
///
public init(text: Binding<String>,
position: Binding<Position>,
messages: Binding<Set<Located<Message>>>,
language: LanguageConfiguration = .none,
layout: LayoutConfiguration = .standard)
layout: LayoutConfiguration = .standard,
customiser:((CETextView)->Void)? = nil)
{
self._text = text
self._position = position
self._messages = messages
self.language = language
self.layout = layout
self._text = text
self._position = position
self._messages = messages
self.language = language
self.layout = layout
self.customiser = customiser
}

public class _Coordinator {
Expand Down Expand Up @@ -150,6 +160,9 @@ extension CodeEditor: UIViewRepresentable {
// Report the initial message set
DispatchQueue.main.async { updateMessages(in: codeView, with: context) }

//Allow the customiser to make any changes
customiser?(codeView)

return codeView
}

Expand Down Expand Up @@ -262,6 +275,8 @@ extension CodeEditor: NSViewRepresentable {
// Report the initial message set
DispatchQueue.main.async{ updateMessages(in: codeView, with: context) }

customiser?(codeView)

return scrollView
}

Expand Down