YotePad/PreviewWindow.cs at main · YPODIN/YotePad · GitHub

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using System;
using System.Drawing;
using System.Windows.Forms;

namespace Yotepad
{
    public class PreviewWindow : Form
    {
        private readonly RecoveryFile _file;
        private readonly ThemeManager _themeManager;
        private TextBox _txtPreview = new TextBox();
        private Button _btnClose = new Button();
        private Button _btnRecover = new Button();
        private Button _btnDelete = new Button();

        public event Action<RecoveryFile>? OnRecover;
        public event Action<RecoveryFile>? OnDelete;

        public PreviewWindow(RecoveryFile file, ThemeManager themeManager, Point spawnLocation)
        {
            _file = file;
            _themeManager = themeManager;
            InitializeComponent(spawnLocation);
            ApplyTheme();
        }

        private void InitializeComponent(Point spawnLocation)
        {
            string title = string.IsNullOrEmpty(_file.OriginalFilePath)
                ? "Preview — Untitled"
                : $"Preview — {System.IO.Path.GetFileName(_file.OriginalFilePath)}";

            this.Text = title;
            this.Size = new Size(600, 500);
            this.StartPosition = FormStartPosition.Manual;
            this.Location = spawnLocation;
            this.FormBorderStyle = FormBorderStyle.Sizable;
            this.MinimumSize = new Size(400, 300);
            this.ShowInTaskbar = false;
            this.TopMost = false;

            // Button strip at the top
            Panel btnPanel = new Panel
            {
                Dock = DockStyle.Top,
                Height = 36
            };

            _btnClose.Text = "Close";
            _btnClose.Size = new Size(80, 26);
            _btnClose.Location = new Point(8, 5);
            _btnClose.Click += (s, e) => this.Close();

            _btnRecover.Text = "Recover";
            _btnRecover.Size = new Size(80, 26);
            _btnRecover.Location = new Point(96, 5);
            _btnRecover.Click += (s, e) => OnRecover?.Invoke(_file);

            _btnDelete.Text = "Delete";
            _btnDelete.Size = new Size(80, 26);
            _btnDelete.Location = new Point(184, 5);
            _btnDelete.Click += (s, e) => OnDelete?.Invoke(_file);

            btnPanel.Controls.Add(_btnClose);
            btnPanel.Controls.Add(_btnRecover);
            btnPanel.Controls.Add(_btnDelete);

            _txtPreview.Multiline = true;
            _txtPreview.ReadOnly = true;
            _txtPreview.WordWrap = true;
            _txtPreview.ScrollBars = ScrollBars.Vertical;
            _txtPreview.Dock = DockStyle.Fill;
            _txtPreview.BorderStyle = BorderStyle.None;
            _txtPreview.Text = _file.Content;
            _txtPreview.Font = new Font("Consolas", 10f);

            this.Controls.Add(_txtPreview);
            this.Controls.Add(btnPanel);

            // Apply dark scrollbar after handle is created
            this.Load += (s, e) =>
            {
                int darkVal = _themeManager.IsDarkMode ? 1 : 0;
                NativeMethods.DwmSetWindowAttribute(this.Handle, NativeMethods.DWMWA_USE_IMMERSIVE_DARK_MODE, ref darkVal, sizeof(int));
                NativeMethods.SetWindowTheme(_txtPreview.Handle, _themeManager.IsDarkMode ? "DarkMode_Explorer" : "Explorer", null);
            };
        }

        public void ApplyTheme()
        {
            this.BackColor = _themeManager.BackgroundColor;
            this.ForeColor = _themeManager.TextColor;
            _txtPreview.BackColor = _themeManager.BackgroundColor;
            _txtPreview.ForeColor = _themeManager.TextColor;

            foreach (Control c in this.Controls)
            {
                if (c is Panel panel)
                {
                    panel.BackColor = _themeManager.MenuBackgroundColor;
                    foreach (Control pc in panel.Controls)
                    {
                        if (pc is Button btn)
                        {
                            btn.FlatStyle = FlatStyle.Flat;
                            btn.FlatAppearance.BorderColor = Color.DimGray;
                            btn.BackColor = _themeManager.BackgroundColor;
                            btn.ForeColor = _themeManager.TextColor;
                        }
                    }
                }
            }
        }
    }
}