97 lines
3.1 KiB
C#
97 lines
3.1 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Threading.Tasks;
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using System.Windows.Forms;
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using Dinah.Core.Windows.Forms;
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namespace LibationWinForm
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{
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public static class IRunnableDialogExt
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{
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public static DialogResult RunDialog(this IRunnableDialog dialog)
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{
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// hook up runner before dialog.ShowDialog for all
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var acceptButton = (ButtonBase)dialog.AcceptButton;
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acceptButton.Click += acceptButton_Click;
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return dialog.ShowDialog();
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}
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// running/workflow logic is in IndexDialogRunner.Run()
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private static async void acceptButton_Click(object sender, EventArgs e)
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{
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var form = ((Control)sender).FindForm();
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var iRunnableDialog = form as IRunnableDialog;
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try
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{
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await iRunnableDialog.Run();
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}
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catch (Exception ex)
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{
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throw new Exception("Did the database get created correctly? Including seed data. Eg: Update-Database", ex);
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}
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}
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public static async Task Run(this IRunnableDialog dialog)
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{
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// validate children
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// OfType<T>() -- skips items which aren't of the required type
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// Cast<T>() -- throws an exception
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var errorStrings = dialog
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// get children
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.Controls
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.GetControlListRecursive()
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.OfType<IValidatable>()
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// and self
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.Append(dialog)
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// validate. get errors
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.Select(c => c.StringBasedValidate())
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// ignore successes
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.Where(e => e != null);
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if (errorStrings.Any())
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{
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MessageBox.Show(errorStrings.Aggregate((a, b) => a + "\r\n" + b));
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return;
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}
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// get top level controls only. If Enabled, disable and push on stack
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var disabledStack = disable(dialog);
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// lazy-man's async. also violates the intent of async/await.
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// use here for now simply for UI responsiveness
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await dialog.DoMainWorkAsync().ConfigureAwait(true);
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// after running, unwind and re-enable
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enable(disabledStack);
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MessageBox.Show(dialog.SuccessMessage);
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dialog.DialogResult = DialogResult.OK;
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dialog.Close();
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}
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static Stack<Control> disable(IRunnableDialog dialog)
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{
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var disableStack = new Stack<Control>();
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foreach (Control ctrl in dialog.Controls)
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{
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if (ctrl.Enabled)
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{
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disableStack.Push(ctrl);
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ctrl.Enabled = false;
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}
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}
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return disableStack;
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}
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static void enable(Stack<Control> disabledStack)
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{
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while (disabledStack.Count > 0)
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{
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var ctrl = disabledStack.Pop();
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ctrl.Enabled = true;
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}
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}
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}
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}
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