/** * * This is a WPF desktop application for Windows. * Because it is a desktop applictaion, it will not * run in the Sololearn environment. * * For an executable download (your anti-virus may freak * out because my .exe hasn't been used by anyone but me yet), * visit: https://github.com/LunarCoffee/lc-text-editor/blob/master/LC%20Text%20Editor.zip * * If the GitHub link doesn't work, please leave * a comment or PM me on Discord. :) * * There are two files included in this code: * - MainWindow.xaml.cs * - MainWindow.xaml * **/ //////////////////////////// // // // MainWindow.xaml.cs // // // //////////////////////////// using System.IO; using System.Collections.Generic; using System.Threading.Tasks; using System.Windows; using System.Linq; using System.Windows.Input; using System.Windows.Media; using System.ComponentModel; using Microsoft.Win32; namespace WPFTest { ///

/// Manages the MainWindow.xaml's interactivity, /// as well as the storage of persistent data. ///

public partial class MainWindow { // current open file in editor and the program's data private static string _currentFile; private static string _currentFileShort = " No file open."; private static Dictionary _appData; public MainWindow() { InitializeComponent(); // check if the data file exists; if it doesn't, make a new one if (!File.Exists("lcte-data.txt")) File.Create(".\\lcte-data.txt"); // get the list of values from the data file var appDataStrings = !File.ReadAllText(".\\lcte-data.txt").Contains(",") ? "False,False,True".Split(',').Select(bool.Parse).ToArray() : File.ReadAllText(".\\lcte-data.txt").Split(',').Select(bool.Parse).ToArray(); // initialize the program's data dictionary _appData = new Dictionary { {"mono_font", appDataStrings[0]}, {"dark_theme", appDataStrings[1]}, {"wrap_text", appDataStrings[2]} }; // load settings from the program's data LoadSettingsOnOpen(); } // required for new custom kb shortcuts private void AlwaysCommand_CanExecute(object sender, CanExecuteRoutedEventArgs e) { e.CanExecute = true; } // disable save when no file is open private void SaveCommand_CanExecute(object sender, CanExecuteRoutedEventArgs e) { e.CanExecute = _currentFile != null; } // shows about dialog private void AboutDialog_OnClick(object sender, RoutedEventArgs e) { MessageBox.Show( "Simple but functional text editor made using C# and the WPF framework. " + "This is LunarCoffee's first GUI Windows program.", "About", MessageBoxButton.OK, MessageBoxImage.Information); } // override the closing to display dialog to confirm program exit protected override void OnClosing(CancelEventArgs e) { CloseWithConfirmDialog(); } // shows dialog confirming program exit private void ExitProgram_OnClick(object sender, RoutedEventArgs e) { CloseWithConfirmDialog(); } // manages current row/char status bar item private void TextArea_OnSelectionChanged(object sender, RoutedEventArgs e) { var row = TextArea.GetLineIndexFromCharacterIndex(TextArea.CaretIndex); var col = TextArea.CaretIndex - TextArea.GetCharacterIndexFromLineIndex(row); CurrentCaretLocation.Text = $"{row + 1}:{col + 1} "; } // makes a new file private void NewFile_OnClick(object sender, RoutedEventArgs e) { var saveFileDialog = new SaveFileDialog(); if (saveFileDialog.ShowDialog() == true) { // create the file and clear the text area File.Create(saveFileDialog.FileName); TextArea.Text = ""; // show shortened file path if the full name is too long CurrentFile.Text = " " + (saveFileDialog.FileName.Length < 84 ? saveFileDialog.FileName : saveFileDialog.FileName.Substring(0, 64) + "..." + saveFileDialog.FileName.Split('\\').Last()); _currentFileShort = CurrentFile.Text; // set current file variable _currentFile = saveFileDialog.FileName; } } // opens a file private void OpenFile_OnClick(object sender, RoutedEventArgs e) { var openFileDialog = new OpenFileDialog(); if (openFileDialog.ShowDialog() == true) { // "open" the file TextArea.Text = File.ReadAllText(openFileDialog.FileName); // show shortened file path if the full name is too long CurrentFile.Text = " " + (openFileDialog.FileName.Length < 84 ? openFileDialog.FileName : openFileDialog.FileName.Substring(0, 64) + "..." + openFileDialog.FileName.Split('\\').Last()); _currentFileShort = CurrentFile.Text; // set current file variable _currentFile = openFileDialog.FileName; } } // saves the currently open file private void SaveFile_OnClick(object sender, RoutedEventArgs e) { // checking for no open file handled by savecommand_canexecute method try { File.WriteAllText(_currentFile, TextArea.Text); // inform the user that the file was saved ShowSnackbar("File successfully saved."); } catch { // inform the user of the error ShowSnackbar("An error occured. The file was not saved."); } } // same as above method, but allows the user to select a file name to save with private void SaveAsFile_OnClick(object sender, RoutedEventArgs e) { try { var saveFileDialog = new SaveFileDialog(); if (saveFileDialog.ShowDialog() == true) { File.WriteAllText(saveFileDialog.FileName, TextArea.Text); // inform the user that the file was saved ShowSnackbar("File successfully saved."); } else { // inform the user that the file was not saved ShowSnackbar("Did not save file."); } } catch { // inform the user of the error ShowSnackbar("An error occured. The file was not saved."); } } // "closes" a file private void CloseFile_OnClick(object sender, RoutedEventArgs e) { TextArea.Text = ""; CurrentFile.Text = " No file open."; _currentFile = null; _currentFileShort = CurrentFile.Text; } // changes font to monospaced font private void FontMonospaced_OnClick(object sender = null, RoutedEventArgs e = null) { TextArea.FontFamily = new FontFamily("Consolas"); // update the program's persistent data _appData["mono_font"] = true; UpdateAppDataFile(); } // changes font to default font private void FontDefault_OnClick(object sender, RoutedEventArgs e) { TextArea.FontFamily = SystemFonts.MessageFontFamily; // update the program's persistent data _appData["mono_font"] = false; UpdateAppDataFile(); } // switches to dark theme private void DarkTheme_OnCheck(object sender = null, RoutedEventArgs e = null) { // add every menu item of every menu item because wpf is inefficient sometimes var submenus = new [] { AppSubmenu1, AppSubmenu2, AppSubmenu3, AppSubmenu4, AppSubmenu5, AppSubmenu6, AppSubmenu7, AppSubmenu8, AppSubmenu9, AppSubmenu10, AppSubmenu11, AppSubmenu12, AppSubmenu13, AppSubmenu14, AppSubmenu15, AppSubmenu16 }; // change basically everything to it's opposite color AppWindow.Background = Brushes.Black; AppWindow.Foreground = Brushes.White; AppMenu.Background = (SolidColorBrush) new BrushConverter().ConvertFrom("#262626"); AppMenu.Foreground = Brushes.White; TextArea.Background = (SolidColorBrush) new BrushConverter().ConvertFrom("#181818"); TextArea.Foreground = Brushes.White; AppStatusBar.Background = (SolidColorBrush) new BrushConverter().ConvertFrom("#262626"); AppStatusBar.Foreground = Brushes.White; // including all the menu items of the menu items foreach (var menu in submenus) menu.Foreground = Brushes.Black; // update the program's persistent data _appData["dark_theme"] = true; UpdateAppDataFile(); } // switches to light theme private void DarkTheme_OnUncheck(object sender, RoutedEventArgs e) { // change everything back to its original color AppWindow.Background = SystemColors.ControlBrush; AppWindow.Foreground = Brushes.Black; AppMenu.Background = Brushes.White; AppMenu.Foreground = Brushes.Black; TextArea.Background = Brushes.White; TextArea.Foreground = Brushes.Black; AppStatusBar.Background = Brushes.White; AppStatusBar.Foreground = Brushes.Black; // update the program's persistent data _appData["dark_theme"] = false; UpdateAppDataFile(); } // turns on the text wrapping of the text area private void WrapText_OnCheck(object sender, RoutedEventArgs e) { TextArea.TextWrapping = TextWrapping.Wrap; // update the program's persistent data _appData["wrap_text"] = true; UpdateAppDataFile(); } // turns off the text wrapping of the text area private void WrapText_OnUncheck(object sender = null, RoutedEventArgs e = null) { TextArea.TextWrapping = TextWrapping.NoWrap; // update the program's persistent data _appData["wrap_text"] = false; UpdateAppDataFile(); } // shows an error message in the status bar private async void ShowSnackbar(string message) { // change the text for 3 seconds, then revert to the original text stored in temp CurrentFile.Text = " " + message; await Task.Delay(2000); CurrentFile.Text = _currentFileShort; } // update the program's data file private void UpdateAppDataFile() { var toWrite = string.Join(",", _appData.Values.ToList().Select(i => i.ToString())); File.WriteAllText(".\\lcte-data.txt", toWrite); } // load the program's data (to be called in the constructor) private void LoadSettingsOnOpen() { // load dark theme setting (default is false) if (_appData["dark_theme"]) { DarkTheme_OnCheck(); AppSubmenu15.IsChecked = true; } // load monospaced font setting (default is regular (true)) if (_appData["mono_font"]) FontMonospaced_OnClick(); // load wrap text setting (default is true) if (!_appData["wrap_text"]) { WrapText_OnUncheck(); AppSubmenu16.IsChecked = false; } else { AppSubmenu16.IsChecked = true; } } // closes program with a confirmation dialog private void CloseWithConfirmDialog() { var exitConfirm = MessageBox.Show( "Are you sure you want to exit?", "Exit", MessageBoxButton.OKCancel, MessageBoxImage.Warning); if (exitConfirm == MessageBoxResult.OK) { Application.Current.Shutdown(); } } } }; ///////////////////////// // // // MainWindow.xaml // // // /////////////////////////

[CS] LC Text Editor