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// Copyright (C) 2024 Rubén Beltrán del Río
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// You should have received a copy of the GNU General Public License
// along with this program. If not, see https://map.tranquil.systems.
import SwiftUI
struct Template: Identifiable, Codable, Hashable {
var id = UUID()
var name: String
var content: String
init(name: String, content: String) {
self.name = name
self.content = content
}
func hash(into hasher: inout Hasher) {
hasher.combine(id)
}
static func == (lhs: Template, rhs: Template) -> Bool {
lhs.id == rhs.id
}
}
struct SimpleTextEditor: NSViewRepresentable {
@Binding var text: String
func makeNSView(context: Context) -> NSScrollView {
let scrollView = NSTextView.scrollableTextView()
let textView = scrollView.documentView as! NSTextView
textView.backgroundColor = .textBackgroundColor
textView.allowsUndo = true
textView.delegate = context.coordinator
textView.string = text
textView.isEditable = true
textView.font = .monospacedSystemFont(ofSize: 14.0, weight: .regular)
return scrollView
}
func updateNSView(_ nsView: NSScrollView, context: Context) {
let textView = nsView.documentView as! NSTextView
if textView.string != text {
textView.string = text
}
}
func makeCoordinator() -> Coordinator {
Coordinator(self)
}
class Coordinator: NSObject, NSTextViewDelegate {
var parent: SimpleTextEditor
init(_ parent: SimpleTextEditor) {
self.parent = parent
}
func textDidChange(_ notification: Notification) {
if let textView = notification.object as? NSTextView {
parent.text = textView.string
}
}
}
}
struct TemplatesPreferencesView: View {
@AppStorage("mapTemplates") private var templatesData: Data = Data()
@State private var templates: [Template] = []
@State private var selectedTemplate: Template?
@State private var templateText: String = ""
@State private var showingAddSheet = false
@State private var newTemplateName = ""
var body: some View {
VStack(alignment: .leading, spacing: Dimensions.Spacing.regular) {
Text("preferences.templates.title")
.font(.Theme.Title.emphasized)
.lineSpacing(Dimensions.LineHeight.title - Dimensions.FontSize.title)
Text("preferences.templates.explanation")
.font(.Theme.Body.regular)
.kerning(Dimensions.Kerning.body)
.lineSpacing(Dimensions.LineHeight.body - Dimensions.FontSize.body)
.padding(.top, Dimensions.Spacing.loose)
.padding(.bottom, Dimensions.Spacing.regular)
HStack(spacing: 0) {
VStack(alignment: .leading, spacing: 8) {
HStack {
Text("Templates")
.font(.headline)
Spacer()
Button(action: { showingAddSheet = true }) {
Image(systemName: "plus")
}
.buttonStyle(.borderless)
Button(action: removeTemplate) {
Image(systemName: "minus")
}
.buttonStyle(.borderless)
.disabled(selectedTemplate == nil)
}
List(templates, selection: $selectedTemplate) { template in
Text(template.name)
.tag(template)
}
.listStyle(.sidebar)
}
.frame(width: 200)
Divider()
VStack(alignment: .leading, spacing: 8) {
if let selected = selectedTemplate {
HStack {
Text("Template: \(selected.name)")
.font(.headline)
Spacer()
}
SimpleTextEditor(text: $templateText)
.onChange(of: templateText) { _, newValue in
updateSelectedTemplate(newValue)
}
} else {
VStack {
Spacer()
Text("Select a template to edit")
.foregroundColor(.secondary)
Spacer()
}
.frame(maxWidth: .infinity, maxHeight: .infinity)
}
}
.frame(maxWidth: .infinity, maxHeight: .infinity)
.padding(.leading)
}
.padding()
.onAppear {
loadTemplates()
}
.onChange(of: selectedTemplate) { _, newSelection in
if let template = newSelection {
templateText = template.content
}
}
.sheet(isPresented: $showingAddSheet) {
VStack(spacing: 16) {
Text("Add New Template")
.font(.headline)
TextField("Template Name", text: $newTemplateName)
.textFieldStyle(.roundedBorder)
HStack {
Button("Cancel") {
showingAddSheet = false
newTemplateName = ""
}
Spacer()
Button("Add") {
addTemplate()
}
.disabled(newTemplateName.isEmpty)
}
}
.frame(width: 300, height: 120)
}
}.padding(.vertical, Dimensions.Spacing.loose)
.padding(.horizontal, Dimensions.Spacing.indulgent)
}
private func loadTemplates() {
if let decoded = try? JSONDecoder().decode([Template].self, from: templatesData) {
templates = decoded
} else {
templates = [
Template(
name: "Basic Map",
content:
"Component A (90, 20)\nComponent B (70, 40)\nComponent A -> Component B\n\n[Note] (50, 10) This is a sample template"
)
]
saveTemplates()
}
}
private func saveTemplates() {
if let encoded = try? JSONEncoder().encode(templates) {
templatesData = encoded
}
}
private func addTemplate() {
let newTemplate = Template(name: newTemplateName, content: "")
templates.append(newTemplate)
selectedTemplate = newTemplate
templateText = ""
saveTemplates()
showingAddSheet = false
newTemplateName = ""
}
private func removeTemplate() {
guard let selected = selectedTemplate else { return }
templates.removeAll { $0.id == selected.id }
selectedTemplate = nil
templateText = ""
saveTemplates()
}
private func updateSelectedTemplate(_ newContent: String) {
guard let selected = selectedTemplate,
let index = templates.firstIndex(where: { $0.id == selected.id })
else { return }
templates[index].content = newContent
saveTemplates()
}
}
#Preview {
TemplatesPreferencesView()
}
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