using System.Threading;
using System.Windows.Controls;
using System.Windows.Input;
using Caliburn.Composition;
using Caliburn.Events.Brokering;
using Caliburn.Messaging;
using Caliburn.Metadata;
using Caliburn.Views;
using MbUnit.Framework;

namespace Tests.Caliburn.The_core_framework_can
{
    [TestFixture(ApartmentState = ApartmentState.STA)]
    public class by_using_the_ViewManager
    {
        private ViewManager _viewManager;

        [SetUp]
        public void Before_Each()
        {
            _viewManager = new ViewManager();
        }

        [Test]
        public void register_default_properties_for_controls()
        {
            _viewManager.RegisterDefaults(
                new ElementDefaults<Button, InvalidProxy>("Click", (c) => c.DataContext, (c,o) => c.DataContext = o)
                );

            ElementDefaults defaults = _viewManager.GetDefaults(typeof(Button));

            Assert.IsNotNull(defaults);
            Assert.AreEqual("Click", defaults.DefaultEventName);

            Button b = new Button();
            b.DataContext = "test";

            Assert.AreEqual(b.DataContext, defaults.GetDefaultValue(b));

            defaults.SetDefaultValue(b, "anotherTest");
            Assert.AreEqual("anotherTest", b.DataContext);
        }

        [Test]
        public void register_an_ActionMessage_with_event_trigger()
        {
            ActionMessage message = new ActionMessage();
            message.Action = "SomeMethod";
            message.Trigger = "Click";

            TestMessageSource source = new TestMessageSource();

            _viewManager.AddMessageSource(source, message);

            Assert.IsTrue(Helper.HasWiredEvent(source, "Click"));
        }

        [Test]
        public void register_an_ActionMessage_with_default_event()
        {
            ActionMessage message = new ActionMessage();
            message.Action = "SomeMethod";

            TestMessageSource source = new TestMessageSource();

            _viewManager.RegisterDefaults(
                new ElementDefaults<TestMessageSource, InvalidProxy>("Click", (c) => c.Test, (c, o) => c.Test = o)
                );

            _viewManager.AddMessageSource(source, message);

            Assert.IsTrue(Helper.HasWiredEvent(source, "Click"));
        }

        [Test]
        public void register_an_ActionMessage_with_InputGesture()
        {
            MouseGesture gesture = new MouseGesture(MouseAction.RightClick, ModifierKeys.Alt);

            ActionMessage message = new ActionMessage();
            message.Action = "SomeMethod";
            message.Trigger = gesture;

            Button button = new Button();

            _viewManager.AddMessageSource(button, message);

            bool isBound = false;

            foreach(InputBinding binding in button.InputBindings)
            {
                if(binding.Gesture == gesture &&
                    binding.Command != null)
                {
                    isBound = true;
                    break;
                }
            }

            Assert.IsTrue(isBound);
        }

        [Test]
        public void register_an_EventMessage_with_event_trigger()
        {
            EventMessage message = new EventMessage();
            message.Trigger = "Click";
            message.Publication = new Publication("event://someEvent");

            TestMessageSource source = new TestMessageSource();

            _viewManager.AddMessageSource(source, message);

            Assert.IsTrue(Helper.HasWiredEvent(source, "Click"));
        }

        [Test]
        public void register_an_EventMessage_with_default_event()
        {
            EventMessage message = new EventMessage();
            message.Publication = new Publication("event://someEvent");

            TestMessageSource source = new TestMessageSource();

            _viewManager.RegisterDefaults(
                new ElementDefaults<TestMessageSource, InvalidProxy>("Click", (c) => c.Test, (c, o) => c.Test = o)
                );

            _viewManager.AddMessageSource(source, message);

            Assert.IsTrue(Helper.HasWiredEvent(source, "Click"));
        }

        [Test]
        public void register_an_EventMessage_with_InputGesture()
        {
            MouseGesture gesture = new MouseGesture(MouseAction.RightClick, ModifierKeys.Alt);

            EventMessage message = new EventMessage();
            message.Publication = new Publication("event://someEvent");
            message.Trigger = gesture;

            Button button = new Button();

            _viewManager.AddMessageSource(button, message);

            bool isBound = false;

            foreach (InputBinding binding in button.InputBindings)
            {
                if (binding.Gesture == gesture &&
                    binding.Command != null)
                {
                    isBound = true;
                    break;
                }
            }

            Assert.IsTrue(isBound);
        }
    }
}