// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
 
using System.Drawing;
using Windows.Win32.System.Variant;
using Windows.Win32.UI.Accessibility;
 
namespace System.Windows.Forms;
 
public partial class PrintControllerWithStatusDialog
{
    private partial class StatusDialog : Form
    {
        internal TextBox _cancellingTextBox;
        private Button _cancelButton;
        private TableLayoutPanel? _tableLayoutPanel;
        private readonly BackgroundThread _backgroundThread;
 
        internal StatusDialog(BackgroundThread backgroundThread, string dialogTitle)
        {
            InitializeComponent();
            _backgroundThread = backgroundThread;
            Text = dialogTitle;
            MinimumSize = Size;
        }
 
        [MemberNotNull(nameof(_cancellingTextBox))]
        [MemberNotNull(nameof(_cancelButton))]
        private void InitializeComponent()
        {
            if (SR.RTL != "RTL_False")
            {
                // Resources have been localized for an RTL language.
                RightToLeft = RightToLeft.Yes;
            }
 
            _cancellingTextBox = new TextBox()
            {
                AutoSize = true,
                Location = new Point(8, 16),
                BorderStyle = BorderStyle.None,
                ReadOnly = true,
                TextAlign = HorizontalAlignment.Center,
                Size = new Size(240, 64),
                TabIndex = 1,
                Anchor = AnchorStyles.None
            };
 
            _cancellingTextBox.TextChanged += OnCancellingTextBoxTextChanged;
 
            _cancelButton = new Button()
            {
                AutoSize = true,
                Size = new Size(75, 23),
                TabIndex = 0,
                Text = SR.PrintControllerWithStatusDialog_Cancel,
                Location = new Point(88, 88),
                Anchor = AnchorStyles.None
            };
 
            _cancelButton.Click += CancelClick;
 
            _tableLayoutPanel = new TableLayoutPanel()
            {
                AutoSize = true,
                ColumnCount = 1,
                Dock = DockStyle.Fill,
                Location = new Point(0, 0),
                RowCount = 2,
                TabIndex = 0,
            };
 
            _tableLayoutPanel.ColumnStyles.Add(new(SizeType.Percent, 100F));
            _tableLayoutPanel.RowStyles.Add(new(SizeType.Percent, 50F));
            _tableLayoutPanel.RowStyles.Add(new(SizeType.Percent, 50F));
            _tableLayoutPanel.Controls.Add(_cancellingTextBox, 0, 0);
            _tableLayoutPanel.Controls.Add(_cancelButton, 0, 1);
 
            AutoScaleDimensions = new Size(6, 13);
            AutoScaleMode = AutoScaleMode.Font;
            MaximizeBox = false;
            ControlBox = false;
            MinimizeBox = false;
            ClientSize = ScaleHelper.ScaleToDpi(new Size(256, 122), ScaleHelper.InitialSystemDpi);
 
            CancelButton = _cancelButton;
            SizeGripStyle = SizeGripStyle.Hide;
            Controls.Add(_tableLayoutPanel);
        }
 
        private void CancelClick(object? sender, EventArgs e)
        {
            _cancelButton.Enabled = false;
            _cancellingTextBox.Text = SR.PrintControllerWithStatusDialog_Canceling;
            _backgroundThread._canceled = true;
        }
 
        protected override AccessibleObject CreateAccessibilityInstance() => new StatusDialogAccessibility(this);
 
        private void OnCancellingTextBoxTextChanged(object? sender, EventArgs e)
        {
            if (!_cancellingTextBox.IsAccessibilityObjectCreated)
            {
                return;
            }
 
            using var textVariant = (VARIANT)_cancellingTextBox.Text;
            _cancellingTextBox.AccessibilityObject?.RaiseAutomationEvent(UIA_EVENT_ID.UIA_Text_TextChangedEventId);
            _cancellingTextBox.AccessibilityObject?.RaiseAutomationPropertyChangedEvent(UIA_PROPERTY_ID.UIA_NamePropertyId, textVariant, textVariant);
        }
    }
}