native macOS codings agent orchestrator prowl.onev.cat
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Swift
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struct MirrorDocumentView: View { /// The coordinate space of the row tops. Apply it to the scroll content. nonisolated static var rowSpace: NamedCoordinateSpace { .named("MirrorDocumentView.rows") }
let text: String /// Receives the top of each row in `rowSpace` when the row is laid out, and nil when it leaves /// the layout. var onRowTop: ((MirrorDocument.Row.ID, CGFloat?) -> Void)? @State private var expanded: MirrorDocument.Block?
var body: some View { // One flat lazy stack: each chunk of a long text block is a row, so a reading position can // anchor to the text near the top of the visible area. LazyVStack(alignment: .leading, spacing: 0) { ForEach(MirrorDocument(text).rows) { row in rowContent(row) .padding(.top, row.id.chunk == 0 && row.id.block > 0 ? 12 : 0) .id(row.id) .onGeometryChange(for: CGFloat.self) { $0.frame(in: Self.rowSpace).minY } action: { top in onRowTop?(row.id, top) } .onDisappear { onRowTop?(row.id, nil) } } } .sheet(item: $expanded) { block in NavigationStack { MirrorFrozenDetailView(block: block) .navigationTitle("Frozen detail") .toolbar { Button("Copy") { UIPasteboard.general.string = block.raw } Button("Done") { expanded = nil } } } } }
@ViewBuilder private func rowContent(_ row: MirrorDocument.Row) -> some View { let block = row.block switch block { case .text(_, let content): if let chunk = row.chunk { Text(verbatim: chunk.display) .textSelection(.enabled) .frame(maxWidth: .infinity, alignment: .leading) .contextMenu { Button("Copy Full Text Block") { UIPasteboard.general.string = content } } } else { Text(renderInline(content)).textSelection(.enabled) } case .code(_, let language, let code): VStack(alignment: .leading, spacing: 8) { HStack { Text(language.isEmpty ? "Code" : language).font(.caption).foregroundStyle(.secondary) Spacer() Button("Expand") { expanded = block } } Text(code).font(.body.monospaced()).lineLimit(6).textSelection(.enabled) } .padding().background(.quaternary, in: RoundedRectangle(cornerRadius: 12)) case .table(_, _, let rows): VStack(alignment: .leading, spacing: 8) { HStack { Text("Table · \(rows.count - 1) rows").font(.caption).foregroundStyle(.secondary) Spacer() Button("Expand") { expanded = block } } ScrollView(.horizontal) { table(Array(rows.prefix(5))) } } .padding().background(.quaternary, in: RoundedRectangle(cornerRadius: 12)) } }
private func renderInline(_ text: String) -> AttributedString { (try? AttributedString( markdown: text, options: .init(interpretedSyntax: .inlineOnlyPreservingWhitespace))) ?? AttributedString(text) }
private func table(_ rows: [[String]]) -> some View { Grid(alignment: .leading, horizontalSpacing: 18, verticalSpacing: 10) { ForEach(Array(rows.enumerated()), id: \.offset) { index, cells in GridRow { ForEach(Array(cells.enumerated()), id: \.offset) { _, cell in Text(cell).fontWeight(index == 0 ? .semibold : .regular).textSelection(.enabled) } } if index == 0 { Divider() } } } }}