//
// Copyright (c) 2005 Novell, Inc.
//
// Authors:
//      Ritvik Mayank (mritvik@novell.com)
//

using System;
using NUnit.Framework;
using System.Windows.Forms;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Threading;
using Timer = System.Windows.Forms.Timer;
using System.Globalization;

namespace MonoTests.System.Windows.Forms
{
	[TestFixture]
	public class FormEvent
	{	
		static bool eventhandled = false;
		public void New_EventHandler (object sender, EventArgs e)
		{
			eventhandled = true;
		}

		private Form _form;

		[TearDown]
		public void TearDown ()
		{
			if (_form != null)
				_form.Dispose ();
		}

		[Test]
		public void Activated ()
		{
			if (TestHelper.RunningOnUnix)
				Assert.Ignore ("#7 fails");

			_form = new Form ();
			EventLogger logger = new EventLogger (_form);
			_form.ShowInTaskbar = false;
			Assert.AreEqual (0, logger.CountEvents ("Activated"), "#1");
			_form.Activate ();
			Application.DoEvents ();
			Assert.AreEqual (0, logger.CountEvents ("Activated"), "#2");
			_form.Show ();
			Application.DoEvents ();
			Assert.AreEqual (1, logger.CountEvents ("Activated"), "#3");
			_form.Show ();
			Application.DoEvents ();
			Assert.AreEqual (1, logger.CountEvents ("Activated"), "#4");
			_form.Activate ();
			Application.DoEvents ();
			Assert.AreEqual (1, logger.CountEvents ("Activated"), "#5");
			_form.Hide ();
			Application.DoEvents ();
			Assert.AreEqual (1, logger.CountEvents ("Activated"), "#6");
			_form.Show ();
			Application.DoEvents ();
			Assert.AreEqual (2, logger.CountEvents ("Activated"), "#7");
		}

		[Test]
		public void Activated_Dialog ()
		{
			if (TestHelper.RunningOnUnix)
				Assert.Ignore ("#4 fails");

			_form = new DelayedCloseForm ();
			EventLogger logger = new EventLogger (_form);
			_form.ShowInTaskbar = false;
			Assert.AreEqual (0, logger.CountEvents ("Activated"), "#1");
			_form.Activate ();
			Assert.AreEqual (0, logger.CountEvents ("Activated"), "#2");
			_form.ShowDialog ();
			Assert.AreEqual (1, logger.CountEvents ("Activated"), "#3");
			_form.ShowDialog ();
			Assert.AreEqual (2, logger.CountEvents ("Activated"), "#4");
		}

		[Test]
		public void Closed ()
		{
			_form = new Form ();
			EventLogger logger = new EventLogger (_form);
			_form.ShowInTaskbar = false;
			_form.Show ();
			Application.DoEvents ();
			Assert.AreEqual (0, logger.CountEvents ("Closed"), "#1");
			_form.Close ();
			Application.DoEvents ();
			Assert.AreEqual (1, logger.CountEvents ("Closed"), "#2");
			_form.Close ();
			Application.DoEvents ();
			Assert.AreEqual (1, logger.CountEvents ("Closed"), "#3");
		}

		[Test]
		public void Closed_Dialog ()
		{
			_form = new DelayedCloseForm ();
			EventLogger logger = new EventLogger (_form);
			_form.ShowInTaskbar = false;
			_form.ShowDialog ();
			Assert.AreEqual (1, logger.CountEvents ("Closed"), "#1");
			_form.ShowDialog ();
			Assert.AreEqual (2, logger.CountEvents ("Closed"), "#2");
			_form.Close ();
			Application.DoEvents ();
			Assert.AreEqual (2, logger.CountEvents ("Closed"), "#3");
		}

		[Test]
		public void Closing ()
		{
			_form = new Form ();
			EventLogger logger = new EventLogger (_form);
			_form.ShowInTaskbar = false;
			_form.Show ();
			Application.DoEvents ();
			Assert.AreEqual (0, logger.CountEvents ("Closing"), "#1");
			_form.Close ();
			Application.DoEvents ();
			Assert.AreEqual (1, logger.CountEvents ("Closing"), "#2");
		}

		[Test]
		public void Closing_Dialog ()
		{
			_form = new DelayedCloseForm ();
			EventLogger logger = new EventLogger (_form);
			_form.ShowInTaskbar = false;
			_form.ShowDialog ();
			Assert.AreEqual (1, logger.CountEvents ("Closing"), "#1");
			_form.ShowDialog ();
			Assert.AreEqual (2, logger.CountEvents ("Closing"), "#2");
			_form.Close ();
			Application.DoEvents ();
			Assert.AreEqual (2, logger.CountEvents ("Closing"), "#3");
		}

		[Test]
		public void Deactivate ()
		{
			if (TestHelper.RunningOnUnix)
				Assert.Ignore ("#3 or #5 fail");

			_form = new Form ();
			EventLogger logger = new EventLogger (_form);
			_form.ShowInTaskbar = false;
			_form.Activate ();
			Application.DoEvents ();
			Assert.AreEqual (0, logger.CountEvents ("Deactivate"), "#1");
			_form.Show ();
			Application.DoEvents ();
			Assert.AreEqual (0, logger.CountEvents ("Deactivate"), "#2");
			_form.Hide ();
			Application.DoEvents ();
			Assert.AreEqual (1, logger.CountEvents ("Deactivate"), "#3");
			_form.Show ();
			Application.DoEvents ();
			Assert.AreEqual (1, logger.CountEvents ("Deactivate"), "#4");
			_form.Hide ();
			Application.DoEvents ();
			Assert.AreEqual (2, logger.CountEvents ("Deactivate"), "#5");
			_form.Close ();
			Application.DoEvents ();
			Assert.AreEqual (2, logger.CountEvents ("Deactivate"), "#6");
			_form.Close ();
			Application.DoEvents ();
			Assert.AreEqual (2, logger.CountEvents ("Deactivate"), "#7");
		}

		[Test]
		public void Deactivate_Dialog ()
		{
			if (TestHelper.RunningOnUnix)
				Assert.Ignore ("#2 sometimes fails");

			_form = new DelayedCloseForm ();
			EventLogger logger = new EventLogger (_form);
			_form.ShowInTaskbar = false;
			_form.Activate ();
			Assert.AreEqual (0, logger.CountEvents ("Deactivate"), "#1");
			_form.ShowDialog ();
			Assert.AreEqual (1, logger.CountEvents ("Deactivate"), "#2");
			_form.Close ();
			Application.DoEvents ();
			Assert.AreEqual (1, logger.CountEvents ("Deactivate"), "#3");
		}

		[Test] // bug #413898
		public void EventOrder ()
		{
			if (TestHelper.RunningOnUnix)
				Assert.Ignore ("#A3 fails");

			string [] expectedEvents_Show = {
				"Load",
				"VisibleChanged",
				"GotFocus",
				"Activated" };

			string [] expectedEvents_Close = {
				"Closing",
#if NET_2_0
				"FormClosing",
#endif
				"Closed",
#if NET_2_0
				"FormClosed",
#endif
				"Deactivate",
				"LostFocus",
				"HandleDestroyed",
				"Disposed" };

			_form = new Form ();
			EventLogger logger = new EventLogger (_form);

			_form.Show ();
			Application.DoEvents ();

			Assert.IsTrue (logger.ContainsEventsOrdered (expectedEvents_Show), "#A1:" + logger.EventsJoined());
			Assert.AreEqual (1, logger.CountEvents ("Load"), "#A2");
			Assert.AreEqual (1, logger.CountEvents ("VisibleChanged"), "#A3");
			Assert.AreEqual (1, logger.CountEvents ("GotFocus"), "#A4");
			Assert.AreEqual (1, logger.CountEvents ("Activated"), "#A5");
			Assert.AreEqual (0, logger.CountEvents ("Closing"), "#A6");
#if NET_2_0
			Assert.AreEqual (0, logger.CountEvents ("FormClosing"), "#A7");
#endif
			Assert.AreEqual (0, logger.CountEvents ("Closed"), "#A8");
#if NET_2_0
			Assert.AreEqual (0, logger.CountEvents ("FormClosed"), "#A9");
#endif
			Assert.AreEqual (0, logger.CountEvents ("Deactivate"), "#A10");
			Assert.AreEqual (0, logger.CountEvents ("LostFocus"), "#A11");
			Assert.AreEqual (0, logger.CountEvents ("HandleDestroyed"), "#A12");
			Assert.AreEqual (0, logger.CountEvents ("Disposed"), "#A13");

			logger.Clear ();
			_form.Close ();
			Application.DoEvents ();

			Assert.IsTrue (logger.ContainsEventsOrdered (expectedEvents_Close), "#B1:" + logger.EventsJoined ());
			Assert.AreEqual (0, logger.CountEvents ("Load"), "#B2");
			Assert.AreEqual (0, logger.CountEvents ("VisibleChanged"), "#B3");
			Assert.AreEqual (0, logger.CountEvents ("GotFocus"), "#B4");
			Assert.AreEqual (0, logger.CountEvents ("Activated"), "#B5");
			Assert.AreEqual (1, logger.CountEvents ("Closing"), "#B6");
#if NET_2_0
			Assert.AreEqual (1, logger.CountEvents ("FormClosing"), "#B7");
#endif
			Assert.AreEqual (1, logger.CountEvents ("Closed"), "#B8");
#if NET_2_0
			Assert.AreEqual (1, logger.CountEvents ("FormClosed"), "#B9");
#endif
			Assert.AreEqual (1, logger.CountEvents ("Deactivate"), "#B10");
			Assert.AreEqual (1, logger.CountEvents ("LostFocus"), "#B11");
			Assert.AreEqual (1, logger.CountEvents ("HandleDestroyed"), "#B12");
			Assert.AreEqual (1, logger.CountEvents ("Disposed"), "#B13");
		}

		[Test] // bug #413898
		public void EventOrder_Dialog ()
		{
			if (TestHelper.RunningOnUnix)
				Assert.Ignore ("#A1 fails");

			string [] expectedEvents = {
				"Load",
				"VisibleChanged",
				"GotFocus",
				"Activated",
				"Closing",
#if NET_2_0
				"FormClosing",
#endif
				"Closed",
#if NET_2_0
				"FormClosed",
#endif
				"VisibleChanged",
				"Deactivate",
				"LostFocus",
				"HandleDestroyed" };

			_form = new DelayedCloseForm ();
			EventLogger logger = new EventLogger (_form);

			_form.ShowDialog ();
			Assert.IsTrue (logger.ContainsEventsOrdered (expectedEvents), "#A1:" + logger.EventsJoined ());
			Assert.AreEqual (1, logger.CountEvents ("Load"), "#A2");
			Assert.AreEqual (2, logger.CountEvents ("VisibleChanged"), "#A3");
			Assert.AreEqual (1, logger.CountEvents ("GotFocus"), "#A4");
			Assert.AreEqual (1, logger.CountEvents ("Activated"), "#A5");
			Assert.AreEqual (1, logger.CountEvents ("Closing"), "#A6");
#if NET_2_0
			Assert.AreEqual (1, logger.CountEvents ("FormClosing"), "#A7");
#endif
			Assert.AreEqual (1, logger.CountEvents ("Closed"), "#A8");
#if NET_2_0
			Assert.AreEqual (1, logger.CountEvents ("FormClosed"), "#A9");
#endif
			Assert.AreEqual (1, logger.CountEvents ("Deactivate"), "#A10");
			Assert.AreEqual (1, logger.CountEvents ("LostFocus"), "#A11");
			Assert.AreEqual (1, logger.CountEvents ("HandleDestroyed"), "#A12");
			Assert.AreEqual (0, logger.CountEvents ("Disposed"), "#A13");

			logger.Clear ();

			_form.ShowDialog ();
			Assert.IsTrue (logger.ContainsEventsOrdered (expectedEvents), "#B1:" + logger.EventsJoined ());
			Assert.AreEqual (1, logger.CountEvents ("Load"), "#B2");
			Assert.AreEqual (2, logger.CountEvents ("VisibleChanged"), "#B3");
			Assert.AreEqual (1, logger.CountEvents ("GotFocus"), "#B4");
			Assert.AreEqual (1, logger.CountEvents ("Activated"), "#B5");
			Assert.AreEqual (1, logger.CountEvents ("Closing"), "#B6");
#if NET_2_0
			Assert.AreEqual (1, logger.CountEvents ("FormClosing"), "#B7");
#endif
			Assert.AreEqual (1, logger.CountEvents ("Closed"), "#B8");
#if NET_2_0
			Assert.AreEqual (1, logger.CountEvents ("FormClosed"), "#B9");
#endif
			Assert.AreEqual (1, logger.CountEvents ("Deactivate"), "#B10");
			Assert.AreEqual (1, logger.CountEvents ("LostFocus"), "#B11");
			Assert.AreEqual (1, logger.CountEvents ("HandleDestroyed"), "#B12");
			Assert.AreEqual (0, logger.CountEvents ("Disposed"), "#B13");
		}

#if NET_2_0
		[Test]
		public void FormClosed ()
		{
			_form = new Form ();
			EventLogger logger = new EventLogger (_form);
			_form.ShowInTaskbar = false;
			Assert.AreEqual (0, logger.CountEvents ("FormClosed"), "#1");
			_form.Show ();
			Application.DoEvents ();
			Assert.AreEqual (0, logger.CountEvents ("FormClosed"), "#2");
			_form.Close ();
			Application.DoEvents ();
			Assert.AreEqual (1, logger.CountEvents ("FormClosed"), "#3");
			_form.Close ();
			Application.DoEvents ();
			Assert.AreEqual (1, logger.CountEvents ("FormClosed"), "#4");
			_form.Close ();
			Application.DoEvents ();
			Assert.AreEqual (1, logger.CountEvents ("FormClosed"), "#5");
		}

		[Test]
		public void FormClosed_Dialog ()
		{
			_form = new DelayedCloseForm ();
			EventLogger logger = new EventLogger (_form);
			_form.ShowInTaskbar = false;
			Assert.AreEqual (0, logger.CountEvents ("FormClosed"), "#1");
			_form.ShowDialog ();
			Assert.AreEqual (1, logger.CountEvents ("FormClosed"), "#2");
			_form.Close ();
			Application.DoEvents ();
			Assert.AreEqual (1, logger.CountEvents ("FormClosed"), "#3");
			_form.Close ();
			Application.DoEvents ();
			Assert.AreEqual (1, logger.CountEvents ("FormClosed"), "#4");
		}

		[Test]
		public void FormClosing ()
		{
			_form = new Form ();
			EventLogger logger = new EventLogger (_form);
			_form.ShowInTaskbar = false;
			Assert.AreEqual (0, logger.CountEvents ("FormClosing"), "#1");
			_form.Show ();
			Application.DoEvents ();
			Assert.AreEqual (0, logger.CountEvents ("FormClosing"), "#2");
			_form.Close ();
			Application.DoEvents ();
			Assert.AreEqual (1, logger.CountEvents ("FormClosing"), "#3");
			_form.Close ();
			Application.DoEvents ();
			Assert.AreEqual (1, logger.CountEvents ("FormClosing"), "#4");
			_form.Close ();
			Application.DoEvents ();
			Assert.AreEqual (1, logger.CountEvents ("FormClosing"), "#5");
		}

		[Test]
		public void FormClosing_Dialog ()
		{
			_form = new DelayedCloseForm ();
			EventLogger logger = new EventLogger (_form);
			_form.ShowInTaskbar = false;
			Assert.AreEqual (0, logger.CountEvents ("FormClosing"));
			_form.ShowDialog ();
			Assert.AreEqual (1, logger.CountEvents ("FormClosing"));
			_form.ShowDialog ();
			Assert.AreEqual (2, logger.CountEvents ("FormClosing"));
		}
#endif

		[Test]
		public void Load ()
		{
			_form = new Form ();
			EventLogger logger = new EventLogger (_form);
			_form.ShowInTaskbar = false;
			Assert.AreEqual (0, logger.CountEvents ("Load"), "#1");
			_form.Show ();
			Assert.AreEqual (1, logger.CountEvents ("Load"), "#2");
			_form.Show ();
			Assert.AreEqual (1, logger.CountEvents ("Load"), "#3");
			_form.Hide ();
			Assert.AreEqual (1, logger.CountEvents ("Load"), "#4");
			_form.Show ();
			Assert.AreEqual (1, logger.CountEvents ("Load"), "#5");
		}

		[Test]
		public void Load_Dialog ()
		{
			_form = new DelayedCloseForm ();
			EventLogger logger = new EventLogger (_form);
			_form.ShowInTaskbar = false;
			Assert.AreEqual (0, logger.CountEvents ("Load"), "#1");
			_form.ShowDialog ();
			Assert.AreEqual (1, logger.CountEvents ("Load"), "#2");
			_form.ShowDialog ();
			Assert.AreEqual (2, logger.CountEvents ("Load"), "#3");
		}

#if NET_2_0
		[Test]
		public void Shown ()
		{
			_form = new Form ();
			EventLogger logger = new EventLogger (_form);
			//_form.ShowInTaskbar = false;
			Assert.AreEqual (0, logger.CountEvents ("Shown"), "#1");
			_form.Show ();
			Application.DoEvents ();
			Assert.AreEqual (1, logger.CountEvents ("Shown"), "#2");
			_form.Show ();
			Application.DoEvents ();
			Assert.AreEqual (1, logger.CountEvents ("Shown"), "#3");
			_form.Hide ();
			Application.DoEvents ();
			Assert.AreEqual (1, logger.CountEvents ("Shown"), "#4");
			_form.Show ();
			Application.DoEvents ();
			Assert.AreEqual (1, logger.CountEvents ("Shown"), "#5");
			_form.Close ();
			Application.DoEvents ();
			Assert.AreEqual (1, logger.CountEvents ("Shown"), "#6");
		}

		[Test]
		public void Shown_Dialog ()
		{
			_form = new DelayedCloseForm ();
			EventLogger logger = new EventLogger (_form);
			_form.ShowInTaskbar = false;
			Assert.AreEqual (0, logger.CountEvents ("Shown"), "#1");
			_form.ShowDialog ();
			Assert.AreEqual (1, logger.CountEvents ("Shown"), "#2");
			_form.ShowDialog ();
			Assert.AreEqual (2, logger.CountEvents ("Shown"), "#3");
		}
#endif

		class DelayedCloseForm : Form
		{
			private Timer _timer;

			public DelayedCloseForm ()
			{
				_timer = new Timer ();
				_timer.Tick += new EventHandler (OnTick);
				_timer.Interval = 50;

				Closed += new EventHandler (OnClosed);
				Load += new EventHandler (OnLoad);
			}

			void OnClosed (object sender, EventArgs e)
			{
				_timer.Enabled = false;
			}

			void OnLoad (object sender, EventArgs e)
			{
				_timer.Enabled = true;
			}

			void OnTick (object sender, EventArgs e)
			{
				Close ();
				Application.DoEvents ();
			}
		}

		class MyForm : Form
		{
			public void MaximizeBoundsTest ()
			{
				this.MaximizedBounds = new Rectangle (10,10,100,100);
			}
		}

		[Test]
		public void MaximizedBoundsChangedTest ()
		{
			_form = new MyForm ();
			_form.MaximizedBoundsChanged += new EventHandler (New_EventHandler);
			eventhandled = false;
			((MyForm) _form).MaximizeBoundsTest ();
			Assert.AreEqual (true, eventhandled, "#A5");
		}

		[Test]
		public void MaximumSizeChangedTest ()
		{
			_form = new Form ();
			_form.ShowInTaskbar = false;
			_form.MaximumSizeChanged += new EventHandler (New_EventHandler);
			eventhandled = false;
			_form.MaximumSize = new Size (500, 500);
			Assert.AreEqual (true, eventhandled, "#A6");
		}

		[Test, Ignore ("Manual Intervention")]
		public void MdiChildActivateTest ()
		{
			Form parent = new Form ();
			parent.ShowInTaskbar = false;
			Form child = new Form ();
			parent.IsMdiContainer = true;
			child.IsMdiContainer = false;
			child.MdiParent = parent;
			parent.MdiChildActivate += new EventHandler (New_EventHandler);
			eventhandled = false;
			using (parent) 
			{
				child.Visible = true;
				parent.Show ();
				Assert.AreEqual (true, eventhandled, "#A7");
				eventhandled = false;
				child.Close ();
				Assert.AreEqual (true, eventhandled, "#A8");
			}
		}

		[Test]
		public void MinimumSizeChangedTest ()
		{
			_form = new Form ();
			_form.ShowInTaskbar = false;
			_form.MinimumSizeChanged += new EventHandler (New_EventHandler);
			eventhandled = false;
			_form.MinimumSize = new Size(100, 100);
			Assert.AreEqual (true, eventhandled, "#A10");
		}
	}

	[TestFixture]
	public class ClosingEvent
	{	
		bool cancel = true;
		CancelEventArgs args = null;
		public void Closing_Handler (object sender, CancelEventArgs e)
		{
			e.Cancel = cancel;
			args = e;
		}

		[Test, Ignore ("visual test")]
		public void ClosingEventTest ()
		{
			Form myform = new Form ();
			myform.ShowInTaskbar = false;
			myform.Closing += new CancelEventHandler (Closing_Handler);
			myform.Show ();
			args = null;
			myform.Close ();
			Assert.AreEqual (true, args != null, "#A11");
			Assert.AreEqual (true, myform.Visible, "#A12");
			cancel = false;
			args = null;
			myform.Close ();
			Assert.AreEqual (true, args != null, "#A13");
			Assert.AreEqual (false, myform.Visible, "#A14");
		}
	}

	[TestFixture,Ignore ("Test Breaks")]
	public class InputLanguageChangedEvent
	{	
		static bool eventhandled = false;
		public void InputLanguage_Handler (object sender,InputLanguageChangedEventArgs e)
		{
			eventhandled = true;
		}

		[Test]
		public void InputLanguageChangedEventTest ()
		{
			Form myform = new Form ();
			myform.ShowInTaskbar = false;
			CultureInfo oldci = Thread.CurrentThread.CurrentCulture;
			CultureInfo oldcui = Thread.CurrentThread.CurrentUICulture;
			InputLanguage oldil = InputLanguage.CurrentInputLanguage;
			try {
				if (InputLanguage.InstalledInputLanguages.Count > 1) {
					InputLanguage.CurrentInputLanguage = InputLanguage.InstalledInputLanguages[0];
					myform.InputLanguageChanged += new InputLanguageChangedEventHandler (InputLanguage_Handler);
					Thread.CurrentThread.CurrentCulture = new CultureInfo ("ta-IN");
					Thread.CurrentThread.CurrentUICulture = Thread.CurrentThread.CurrentCulture;
					InputLanguage.CurrentInputLanguage = InputLanguage.InstalledInputLanguages[1];
					Assert.AreEqual (true, eventhandled, "#A15");
				}
			} finally {
				Thread.CurrentThread.CurrentCulture = oldci;
				Thread.CurrentThread.CurrentUICulture = oldcui;
				InputLanguage.CurrentInputLanguage = oldil;
			}
			myform.Dispose ();
		}
	}

	[TestFixture,Ignore ("Test Breaks")]
	public class InputLanguageChangingEvent
	{	
		static bool eventhandled = false;
		public void InputLangChanging_Handler(object sender,InputLanguageChangingEventArgs e)
		{
			eventhandled = true;
		}

		[Test]
		public void InputLanguageChangingEventTest ()
		{
			Form myform = new Form ();
			myform.ShowInTaskbar = false;
			CultureInfo oldci = Thread.CurrentThread.CurrentCulture;
			CultureInfo oldcui = Thread.CurrentThread.CurrentUICulture;
			InputLanguage oldil = InputLanguage.CurrentInputLanguage;
			try {
				if (InputLanguage.InstalledInputLanguages.Count > 1) 
				{
					InputLanguage.CurrentInputLanguage = InputLanguage.InstalledInputLanguages[0];
					myform.InputLanguageChanging += new InputLanguageChangingEventHandler (InputLangChanging_Handler);
					Thread.CurrentThread.CurrentCulture = new CultureInfo ("ta-IN");
					Thread.CurrentThread.CurrentUICulture = Thread.CurrentThread.CurrentCulture;
					InputLanguage.CurrentInputLanguage = InputLanguage.InstalledInputLanguages[1];
					Assert.AreEqual (true, eventhandled, "#A16");
				}
			} finally {
				Thread.CurrentThread.CurrentCulture = oldci;
				Thread.CurrentThread.CurrentUICulture = oldcui;
				InputLanguage.CurrentInputLanguage = oldil;
			}
			myform.Dispose ();
		}
	}
}