XrmToolBox/XrmToolBox.Extensibility/Worker.cs at master · JetLu/XrmToolBox · GitHub

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using System;
using System.ComponentModel;
using System.Windows.Forms;

namespace XrmToolBox.Extensibility
{
    public class Worker
    {
        private Panel _infoPanel;

        private BackgroundWorker _worker;

        public void CancelWorker()
        {
            if (_worker != null && _worker.WorkerSupportsCancellation)
            {
                _worker.CancelAsync();

                if (_infoPanel != null)
                {
                    _infoPanel.Parent.Controls.Remove(_infoPanel);
                    _infoPanel.Dispose();
                }
            }
        }

        public void SetWorkingMessage(Control host, string message, int width = 340, int height = 150)
        {
            if (host.Controls.Contains(_infoPanel))
            {
                if (_infoPanel.Width != width || _infoPanel.Height != height)
                {
                    _infoPanel.Dispose();
                    host.Controls.Remove(_infoPanel);
                    _infoPanel = InformationPanel.GetInformationPanel(host, message, width, height);
                }
                else
                {
                    InformationPanel.ChangeInformationPanelMessage(_infoPanel, message);
                }
            }
            else
            {
                _infoPanel = InformationPanel.GetInformationPanel(host, message, width, height);
            }
        }

        public void WorkAsync(WorkAsyncInfo info)
        {
            if (info.Host == null)
            {
                throw new NullReferenceException("WorkAsyncInfo Host property is null!");
            }

            _infoPanel = InformationPanel.GetInformationPanel(info.Host, info.Message, info.MessageWidth, info.MessageHeight);
            _worker = new BackgroundWorker
            {
                WorkerReportsProgress = info.ProgressChanged != null,
                WorkerSupportsCancellation = info.IsCancelable
            };
            _worker.DoWork += info.PerformWork;

            if (_worker.WorkerReportsProgress && info.ProgressChanged != null)
            {
                _worker.ProgressChanged += info.PerformProgressChange;
            }

            if (info.PostWorkCallBack != null)
            {
                _worker.RunWorkerCompleted += (s, e) =>
                {
                    if (info.Host.Controls.Contains(_infoPanel))
                    {
                        _infoPanel.Dispose();
                        info.Host.Controls.Remove(_infoPanel);
                    }
                    info.PostWorkCallBack(e);
                };
            }

            _worker.RunWorkerAsync(info.AsyncArgument);
        }
    }
}