FastnotesSettings.swift

import SwiftUI


struct Modifier: Identifiable
{
	let id = UUID()
	@State var title: String
}

struct FastnotesSettings: View
{
	@State private var rows: [Modifier] = [Modifier(title:"Brightness"), Modifier(title:"Contrast"), Modifier(title:"Detail"), Modifier(title:"Saturation"), Modifier(title:"Sharpness"), Modifier(title:"Weight")]
	
	@State private var editMode = EditMode.inactive
	
	var body: some View
	{
		List {
			
			Section {
				
				ForEach(rows) { row in
					TextField("Text", text: row.$title)
						.disabled(editMode != .active)
				}
				.onMove(perform: move)
				.onDelete(perform: delete)
			}
			
			Section {
				
				HStack {
					Spacer()
					Button("Restore Default FastNotes Palette") {
						withAnimation {
							//self.model.reset()
						}
					}
					Spacer()
				}

			}
		}
		.navigationBarItems(leading: addButton, trailing: EditButton())
		.environment(\.editMode, $editMode)
		.listStyle(GroupedListStyle())
		.environment(\.horizontalSizeClass, .regular)
		.navigationBarTitle("FastNotes", displayMode: .inline)
	}
	
	
	
	func move(from source: IndexSet, to destination: Int)
	{
		rows.move(fromOffsets: source, toOffset: destination)
	}
	
	func delete(from source: IndexSet)
	{
		rows.remove(atOffsets: source)
	}
	
	@ViewBuilder
	private var addButton: some View
	{
		switch editMode {
			case .active:
				Button(action: onAdd)
				{
					Image(systemName: "plus")
				}
				.disabled(rows.count >= 10)
			default:
				EmptyView()
		}
	}
	
	func onAdd()
	{
		withAnimation {
			rows.append(Modifier(title:""))
		}
	}
}



struct FastNotesPalette_Previews: PreviewProvider {
	static var previews: some View {
		NavigationView {
			FastnotesSettings()
			
		}
		.navigationViewStyle(StackNavigationViewStyle())
		.previewLayout(.fixed(width: 500, height: 600))
	}
}