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

namespace Blacklight.Core.UnitTests
{
    public class MouseWheelForwarderTests : UnitTestSharp.TestFixture
    {
        Form form;
        Control control;
        MouseWheelForwarder forwarder;

        public override void TestSetup()
        {
            form = new Form();
            form.Width = 100;
            form.Height = 100;
            form.Location = new System.Drawing.Point(0, 0);
            form.ClientSize = new System.Drawing.Size(100, 100);

            control = new Control();

            control.Width = 50;
            control.Height = 50;
            control.Location = new System.Drawing.Point(25, 25);

            forwarder = new MouseWheelForwarder(control);

            form.Controls.Add(control);
        }

        public override void TestTeardown()
        {
            form.Dispose();
            control.Dispose();
            forwarder.Dispose();

            form = null;
            control = null;
            forwarder = null;
        }

        [UnitTestSharp.IgnoreTest]
        private void FireMouseEnterControl(Control control)
        {
            MessageMocker.FireMouseMove(control, 0, 0);
        }

        public void NoScrollWhenNoEventsYet()
        {
            bool fired = false;
            control.MouseWheel += delegate(object sender, MouseEventArgs args)
            {
                fired = true;
            };

            MessageMocker.FireScrollWheel(form, 0, 0);
            
            CheckFalse(fired);
        }

        public void ScrollWhenMouseOver()
        {
            bool fired = false;
            control.MouseWheel += delegate(object sender, MouseEventArgs args)
            {
                fired = true;
            };

            FireMouseEnterControl(form);
            FireMouseEnterControl(control);
            MessageMocker.FireMouseMove(control, 2, 2);
            MessageMocker.FireScrollWheel(form, 2, 2);

            Check(fired);
        }

        public void NoScrollWhenMouseLeaves()
        {
            bool fired = false;
            control.MouseWheel += delegate(object sender, MouseEventArgs args)
            {
                fired = true;
            };

            FireMouseEnterControl(control);
            MessageMocker.FireMouseLeave(control);

            MessageMocker.FireScrollWheel(form, 0, 0);

            CheckFalse(fired);
        }
    }
}