public SystemInputDialog()

in sources/Google.Solutions.IapDesktop.Application/Windows/Dialog/SystemInputDialog.cs [41:179]
105 lines of code
3 McCabe index (conditional complexity)

        public SystemInputDialog(InputDialogParameters parameters)
        {
            this.FormBorderStyle = FormBorderStyle.None;
            this.StartPosition = FormStartPosition.CenterParent;
            this.ShowInTaskbar = false;
            this.SizeGripStyle = SizeGripStyle.Hide;

            SuspendLayout();

            this.Size = new Size(450, 245);

            //
            // Header and description.
            //
            this.Controls.Add(new Label()
            {
                Text = parameters.Title,
                Location = new Point(24, 12),
                AutoSize = true,
                Size = new Size(this.Width - 50, 20),
                Anchor = AnchorStyles.Left | AnchorStyles.Right | AnchorStyles.Top,
            });
            this.Controls.Add(new HeaderLabel()
            {
                Text = parameters.Caption,
                Location = new Point(24 - 2, 40),
                AutoSize = true,
                Size = new Size(this.Width - 50, 30),
                Anchor = AnchorStyles.Left | AnchorStyles.Right | AnchorStyles.Top,
            });

            var messageLabelInitialSize = new Size(this.Width - 50, 20);
            var messageLabel = new Label()
            {
                Text = parameters.Message,
                Location = new Point(24, 80),
                AutoSize = true,
                Size = messageLabelInitialSize,
                MaximumSize = new Size(this.Width - 50, 400),
                Anchor = AnchorStyles.Left | AnchorStyles.Right | AnchorStyles.Top,
            };
            this.Controls.Add(messageLabel);

            //
            // Text.
            //
            var textBox = new TextBox()
            {
                Location = new Point(24 + 2, 132),
                Size = new Size(296, 30),
                AutoSize = true,
                TabIndex = 0,
                MaxLength = 64,
                Anchor = AnchorStyles.Left | AnchorStyles.Right | AnchorStyles.Bottom,
            };

            if (parameters.IsPassword)
            {
                textBox.PasswordChar = '*';
                textBox.UseSystemPasswordChar = true;
            }

            this.Controls.Add(textBox);

            var warningLabel = new Label()
            {
                Location = new Point(24, 156),
                Size = new Size(296, 20),
                AutoSize = true,
                ForeColor = Color.Red,
                Anchor = AnchorStyles.Left | AnchorStyles.Right | AnchorStyles.Bottom,
            };
            this.Controls.Add(warningLabel);

            //
            // Buttons.
            //
            var okButton = new Button()
            {
                DialogResult = DialogResult.OK,
                Location = new Point(24, 188),
                Size = new Size(200, 30),
                AutoSize = true,
                Text = "OK",
                Enabled = false,
                TabIndex = 1,
                Anchor = AnchorStyles.Left | AnchorStyles.Bottom,
            };
            this.Controls.Add(okButton);
            this.AcceptButton = okButton;

            var cancelButton = new Button()
            {
                DialogResult = DialogResult.Cancel,
                Location = new Point(230, 188),
                Size = new Size(200, 30),
                AutoSize = true,
                Text = "Cancel",
                TabIndex = 2,
                Anchor = AnchorStyles.Left | AnchorStyles.Bottom,
            };
            this.Controls.Add(cancelButton);
            this.CancelButton = cancelButton;


            textBox.HandleCreated += (_, __) =>
            {
                if (!string.IsNullOrEmpty(parameters.Cue))
                {
                    textBox.SetCueBanner(parameters.Cue, true);
                }
            };

            textBox.TextChanged += (_, __) =>
            {
                this.Value = textBox.Text;

                var validationCallback = parameters.Validate ?? ValidateIsNullOrEmpty;
                validationCallback(textBox.Text, out var valid, out var warning);

                okButton.Enabled = valid;
                warningLabel.Visible = !valid;
                warningLabel.Text = warning ?? string.Empty;
            };

            //
            // NB. We must set these properties after adding the controls,
            // otherwise the window isn't auto-scaled correctly.
            //
            this.AutoScaleMode = AutoScaleMode.Dpi;
            this.AutoScaleDimensions = DpiAwareness.DefaultDpi;

            ResumeLayout();

            //
            // Grow form based how much the textbox grew.
            //
            this.Height += messageLabel.Height - messageLabelInitialSize.Height;
        }