MainForm.cs - master - eup/notepad

MainForm.cs
171 строка5 KB
eup
Create: MainForm.cs, NotepadTask2.csproj, NotepadTask2.sln, NotepadTask2.slnx, Program.cs, README.md, TESTING.md
07 июн 2026, 12:08
07 июн 2026, 12:08577d2f6
using System.Drawing;
using System.IO;
using System.Windows.Forms;

namespace NotepadTask2;

public sealed class MainForm : Form
{
    private const string UntitledTitle = "Безымянный";

    private readonly RichTextBox editor = new();
    private readonly OpenFileDialog openFileDialog = new();
    private readonly SaveFileDialog saveFileDialog = new();
    private readonly FontDialog fontDialog = new();
    private readonly ColorDialog colorDialog = new();

    private string? currentFileName;

    public MainForm()
    {
        InitializeComponent();
        UpdateTitle();
    }

    private void InitializeComponent()
    {
        SuspendLayout();

        var menuStrip = new MenuStrip();
        var fileMenu = new ToolStripMenuItem("Файл");
        var createMenuItem = new ToolStripMenuItem("Создать", null, CreateMenuItem_Click);
        var openMenuItem = new ToolStripMenuItem("Открыть", null, OpenMenuItem_Click);
        var saveMenuItem = new ToolStripMenuItem("Сохранить", null, SaveMenuItem_Click);
        var saveAsMenuItem = new ToolStripMenuItem("Сохранить как...", null, SaveAsMenuItem_Click);
        fileMenu.DropDownItems.AddRange(new ToolStripItem[]
        {
            createMenuItem,
            openMenuItem,
            saveMenuItem,
            saveAsMenuItem
        });

        var formatMenu = new ToolStripMenuItem("Формат");
        var fontMenuItem = new ToolStripMenuItem("Шрифт", null, FontMenuItem_Click);
        var backgroundColorMenuItem = new ToolStripMenuItem("Цвет фона", null, BackgroundColorMenuItem_Click);
        formatMenu.DropDownItems.AddRange(new ToolStripItem[]
        {
            fontMenuItem,
            backgroundColorMenuItem
        });

        menuStrip.Items.AddRange(new ToolStripItem[] { fileMenu, formatMenu });

        editor.AcceptsTab = true;
        editor.Dock = DockStyle.Fill;
        editor.Font = new Font("Segoe UI", 10F);
        editor.HideSelection = false;
        editor.ScrollBars = RichTextBoxScrollBars.Both;
        editor.WordWrap = false;

        openFileDialog.Filter = "Текстовые документы и C# файлы (*.txt;*.cs)|*.txt;*.cs|Текстовые документы (*.txt)|*.txt|Файлы C# (*.cs)|*.cs|Все файлы (*.*)|*.*";
        openFileDialog.Title = "Открыть файл";

        saveFileDialog.DefaultExt = "txt";
        saveFileDialog.Filter = "Текстовые документы (*.txt)|*.txt|Все файлы (*.*)|*.*";
        saveFileDialog.Title = "Сохранить файл";
        saveFileDialog.AddExtension = true;

        AutoScaleDimensions = new SizeF(7F, 15F);
        AutoScaleMode = AutoScaleMode.Font;
        ClientSize = new Size(800, 450);
        Controls.Add(editor);
        Controls.Add(menuStrip);
        MainMenuStrip = menuStrip;
        MinimumSize = new Size(320, 220);
        StartPosition = FormStartPosition.CenterScreen;

        ResumeLayout(false);
        PerformLayout();
    }

    private void CreateMenuItem_Click(object? sender, EventArgs e)
    {
        editor.Clear();
        currentFileName = null;
        UpdateTitle();
    }

    private void OpenMenuItem_Click(object? sender, EventArgs e)
    {
        if (openFileDialog.ShowDialog(this) != DialogResult.OK)
        {
            return;
        }

        currentFileName = openFileDialog.FileName;
        editor.LoadFile(currentFileName, RichTextBoxStreamType.PlainText);
        UpdateTitle();
    }

    private void SaveMenuItem_Click(object? sender, EventArgs e)
    {
        Save();
    }

    private void SaveAsMenuItem_Click(object? sender, EventArgs e)
    {
        SaveAs();
    }

    private void FontMenuItem_Click(object? sender, EventArgs e)
    {
        fontDialog.Font = editor.Font;

        if (fontDialog.ShowDialog(this) == DialogResult.OK)
        {
            editor.Font = fontDialog.Font;
        }
    }

    private void BackgroundColorMenuItem_Click(object? sender, EventArgs e)
    {
        colorDialog.Color = editor.BackColor;

        if (colorDialog.ShowDialog(this) == DialogResult.OK)
        {
            editor.BackColor = colorDialog.Color;
        }
    }

    private void Save()
    {
        if (string.IsNullOrWhiteSpace(currentFileName))
        {
            SaveAs();
            return;
        }

        editor.SaveFile(currentFileName, RichTextBoxStreamType.PlainText);
        UpdateTitle();
    }

    private void SaveAs()
    {
        if (!string.IsNullOrWhiteSpace(currentFileName))
        {
            saveFileDialog.InitialDirectory = Path.GetDirectoryName(currentFileName);
            saveFileDialog.FileName = Path.GetFileNameWithoutExtension(currentFileName);
        }
        else
        {
            saveFileDialog.FileName = string.Empty;
        }

        if (saveFileDialog.ShowDialog(this) != DialogResult.OK)
        {
            return;
        }

        currentFileName = saveFileDialog.FileName;
        editor.SaveFile(currentFileName, RichTextBoxStreamType.PlainText);
        UpdateTitle();
    }

    private void UpdateTitle()
    {
        Text = string.IsNullOrWhiteSpace(currentFileName)
            ? UntitledTitle
            : Path.GetFileName(currentFileName);
    }
}