using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Windows.Forms;

namespace EstrazioneAnagrafica
{
    public static class ThreadHelper
    {
        delegate void SetTextCallback(Form f, Control ctrl, string text);
        delegate void SetStatusCallback (Form f, Control ctrl, bool enabled);
        delegate void SetVisibilityCallback (Form f, Control ctrl, bool visible);
        /// <summary>
        /// Set text property of various controls
        /// </summary>
        /// <param name="form">The calling form</param>
        /// <param name="ctrl"></param>
        /// <param name="text"></param>
        public static void SetText(Form form, Control ctrl, string text)
        {
            // InvokeRequired required compares the thread ID of the 
            // calling thread to the thread ID of the creating thread. 
            // If these threads are different, it returns true. 
            if (ctrl.InvokeRequired)
            {
                SetTextCallback d = new SetTextCallback(SetText);
                form.Invoke(d, new object[] { form, ctrl, text });
            }
            else
            {
                ctrl.Text = text;
            }
        }
        public static void SetStatus(Form form, Control ctrl, bool enabled)
        {
            // InvokeRequired required compares the thread ID of the 
            // calling thread to the thread ID of the creating thread. 
            // If these threads are different, it returns true. 
            if (ctrl.InvokeRequired)
            {
                SetStatusCallback d = new SetStatusCallback(SetStatus);
                form.Invoke(d, new object[] { form, ctrl, enabled });
            }
            else
            {
                ctrl.Enabled = enabled;
            }
        }

        public static void SetVisibility(Form form, Control ctrl, bool visible)
        {
            // InvokeRequired required compares the thread ID of the 
            // calling thread to the thread ID of the creating thread. 
            // If these threads are different, it returns true. 
            if (ctrl.InvokeRequired)
            {
                SetVisibilityCallback d = new SetVisibilityCallback(SetVisibility);
                form.Invoke(d, new object[] { form, ctrl, visible });
            }
            else
            {
                ctrl.Visible = visible;
            }
        }

       


    }
}