krz/libre-edit

  1//
  2//  ContentView.swift
  3//  LibreEdit
  4//
  5//  Created by Christian Cleberg on 2024-01-13.
  6//
  7
  8import SwiftUI
  9import UniformTypeIdentifiers
 10
 11struct TextFile: FileDocument {
 12    static var readableContentTypes = [UTType.plainText]
 13    var text = ""
 14
 15    // Initialize a new document
 16    init(initialText: String = "") {
 17        text = initialText
 18    }
 19
 20    // Load an existing document
 21    init(configuration: ReadConfiguration) throws {
 22        if let data = configuration.file.regularFileContents {
 23            text = String(decoding: data, as: UTF8.self)
 24        } else {
 25            throw CocoaError(.fileReadCorruptFile)
 26        }
 27    }
 28
 29    // Save document data to file
 30    func fileWrapper(configuration: WriteConfiguration) throws -> FileWrapper {
 31        let data = Data(text.utf8)
 32        return FileWrapper(regularFileWithContents: data)
 33    }
 34}
 35
 36// Counts all words in the opened file
 37func countWords(text: String) -> Int {
 38    let words = text.split { $0 == " " || $0.isNewline }
 39    return words.count
 40}
 41
 42struct ContentView: View {
 43    @Binding var document: TextFile
 44    @State private var showingPopover = false
 45    @State private var wordCount: Int = 0
 46    
 47    var body: some View {
 48        NavigationView {
 49            VStack {
 50                Text("\(wordCount) words")
 51                    .foregroundColor(Color.white)
 52                    .font(.headline)
 53                    .padding(.trailing)
 54                    .frame(maxWidth: .infinity, maxHeight: 50)
 55                    .background(Color.gray.opacity(0.3))
 56                    .padding(.top, 20)
 57                TextEditor(text: $document.text)
 58                    .onAppear {
 59                        self.wordCount = countWords(text: document.text)
 60                    }
 61                    .onChange(of: document.text) {
 62                        self.wordCount = countWords(text: document.text)
 63                    }
 64                    .toolbar {
 65                        ToolbarItemGroup(placement: .secondaryAction) {
 66                            NavigationLink(destination: MarkdownView(document: $document)) {
 67                                Text("Show Rendered Markdown")
 68                            }
 69                            Button {
 70                                showingPopover = true
 71                            } label: {
 72                                Text("More Info")
 73                            }.popover(isPresented: $showingPopover) {
 74                                VStack(alignment: .leading) {
 75                                    Text("More Info")
 76                                        .font(.largeTitle)
 77                                    Text("")
 78                                    Text("Instructions")
 79                                        .font(.title)
 80                                    Text("")
 81                                    Text("LibreEdit provides a direct interface with the Apple Files app on your iPhone. Simply navigate to your preferred directory, edit existing files, or create new files!")
 82                                    Text("")
 83                                    Text("Developer")
 84                                        .font(.title)
 85                                    Text("")
 86                                    Text("LibreEdit is a free and open source text editor for iOS built by [Christian Cleberg](https://cmc.pub).")
 87                                    Text("")
 88                                    Text("Visit the [GitHub Repository](https://git.cleberg.net/libre-edit.git) to view the source code.")
 89                                    Text("")
 90                                    Text("This project was developed under the [GNU GPL v3 license](https://git.cleberg.net/libre-edit.git/tree/LICENSE).")
 91                                    Spacer()
 92                                }
 93                                .padding()
 94                            }
 95                        }
 96                    }
 97            }
 98        }
 99    }
100}