// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.

using System.ComponentModel;
using System.Drawing;
using WinForms.Common.Tests;
using Xunit;

namespace System.Windows.Forms.Design.Tests
{
    using Point = System.Drawing.Point;
    using Size = System.Drawing.Size;

    public class ComponentEditorFormTests : IClassFixture<ThreadExceptionFixture>
    {
        [WinFormsFact]
        public void ComponentEditorComponentEditorForm_Ctor_Default()
        {
            using var component = new Component();
            using var control = new SubComponentEditorForm(component, Array.Empty<Type>());
            Assert.NotNull(control.AcceptButton);
            Assert.Null(control.AccessibleDefaultActionDescription);
            Assert.Null(control.AccessibleDescription);
            Assert.Null(control.AccessibleName);
            Assert.Equal(AccessibleRole.Default, control.AccessibleRole);
            Assert.Null(control.ActiveControl);
            Assert.Null(control.ActiveMdiChild);
            Assert.False(control.AllowDrop);
            Assert.False(control.AllowTransparency);
            Assert.Equal(AnchorStyles.Top | AnchorStyles.Left, control.Anchor);
#pragma warning disable 0618
            Assert.True(control.AutoScale);
#pragma warning restore 0618
            Assert.True(control.AutoScaleBaseSize.Width > 0);
            Assert.True(control.AutoScaleBaseSize.Height > 0);
            Assert.Equal(SizeF.Empty, control.AutoScaleDimensions);
            Assert.Equal(new SizeF(1, 1), control.AutoScaleFactor);
            Assert.Equal(AutoScaleMode.Inherit, control.AutoScaleMode);
            Assert.False(control.AutoScroll);
            Assert.Equal(Size.Empty, control.AutoScrollMargin);
            Assert.Equal(Size.Empty, control.AutoScrollMinSize);
            Assert.Equal(Point.Empty, control.AutoScrollPosition);
            Assert.False(control.AutoSize);
            Assert.Equal(AutoSizeMode.GrowOnly, control.AutoSizeMode);
            Assert.Equal(Control.DefaultBackColor, control.BackColor);
            Assert.Null(control.BackgroundImage);
            Assert.Equal(ImageLayout.Tile, control.BackgroundImageLayout);
            Assert.NotNull(control.BindingContext);
            Assert.Same(control.BindingContext, control.BindingContext);
            Assert.Equal(control.Height, control.Bottom);
            Assert.Equal(new Rectangle(0, 0, control.Width, control.Height), control.Bounds);
            Assert.NotNull(control.CancelButton);
            Assert.False(control.CanEnableIme);
            Assert.False(control.CanFocus);
            Assert.True(control.CanRaiseEvents);
            Assert.False(control.CanSelect);
            Assert.False(control.Capture);
            Assert.True(control.CausesValidation);
            Assert.Equal(new Rectangle(0, 0, control.ClientSize.Width, control.ClientSize.Height), control.ClientRectangle);
            Assert.Equal(new Size(control.ClientSize.Width, control.ClientSize.Height), control.ClientSize);
            Assert.Null(control.Container);
            Assert.False(control.ContainsFocus);
            Assert.Null(control.ContextMenuStrip);
            Assert.True(control.ControlBox);
            Assert.NotEmpty(control.Controls);
            Assert.Same(control.Controls, control.Controls);
            Assert.False(control.Created);
            Assert.Equal(SizeF.Empty, control.CurrentAutoScaleDimensions);
            Assert.Equal(AutoValidate.EnablePreventFocusChange, control.AutoValidate);
            Assert.Equal(Cursors.Default, control.Cursor);
            Assert.Equal(Cursors.Default, control.DefaultCursor);
            Assert.Equal(ImeMode.NoControl, control.DefaultImeMode);
            Assert.Equal(new Padding(3), control.DefaultMargin);
            Assert.Equal(Size.Empty, control.DefaultMaximumSize);
            Assert.Equal(Size.Empty, control.DefaultMinimumSize);
            Assert.Equal(Padding.Empty, control.DefaultPadding);
            Assert.Equal(new Size(300, 300), control.DefaultSize);
            Assert.False(control.DesignMode);
            Assert.Equal(new Rectangle(-SystemInformation.WorkingArea.X, -SystemInformation.WorkingArea.Y, control.Width, control.Height), control.DesktopBounds);
            Assert.Equal(new Point(-SystemInformation.WorkingArea.X, -SystemInformation.WorkingArea.Y), control.DesktopLocation);
            Assert.Equal(DialogResult.None, control.DialogResult);
            Assert.Equal(new Rectangle(0, 0, control.ClientSize.Width, control.ClientSize.Height), control.DisplayRectangle);
            Assert.Equal(DockStyle.None, control.Dock);
            Assert.NotNull(control.DockPadding);
            Assert.Same(control.DockPadding, control.DockPadding);
            Assert.Equal(0, control.DockPadding.Top);
            Assert.Equal(0, control.DockPadding.Bottom);
            Assert.Equal(0, control.DockPadding.Left);
            Assert.Equal(0, control.DockPadding.Right);
            Assert.False(control.DoubleBuffered);
            Assert.True(control.Enabled);
            Assert.NotNull(control.Events);
            Assert.Same(control.Events, control.Events);
            Assert.False(control.Focused);
            Assert.Equal(Control.DefaultFont, control.Font);
            Assert.Equal(control.Font.Height, control.FontHeight);
            Assert.Equal(Control.DefaultForeColor, control.ForeColor);
            Assert.Equal(FormBorderStyle.FixedDialog, control.FormBorderStyle);
            Assert.True(control.HasChildren);
            Assert.True(control.Height > 0);
            Assert.False(control.HelpButton);
            Assert.NotNull(control.HorizontalScroll);
            Assert.Same(control.HorizontalScroll, control.HorizontalScroll);
            Assert.False(control.HScroll);
            Assert.NotNull(control.Icon);
            Assert.Equal(ImeMode.NoControl, control.ImeMode);
            Assert.Equal(ImeMode.NoControl, control.ImeModeBase);
            Assert.False(control.IsAccessible);
            Assert.False(control.IsMdiChild);
            Assert.False(control.IsMdiContainer);
            Assert.False(control.IsMirrored);
            Assert.False(control.IsRestrictedWindow);
            Assert.False(control.KeyPreview);
            Assert.NotNull(control.LayoutEngine);
            Assert.Same(control.LayoutEngine, control.LayoutEngine);
            Assert.Equal(0, control.Left);
            Assert.Equal(Point.Empty, control.Location);
            Assert.Null(control.MainMenuStrip);
            Assert.Equal(new Padding(3), control.Margin);
            Assert.Empty(control.MdiChildren);
            Assert.Null(control.MdiParent);
            Assert.Equal(Rectangle.Empty, control.MaximizedBounds);
            Assert.False(control.MaximizeBox);
            Assert.Equal(Size.Empty, control.MaximumSize);
            Assert.False(control.MinimizeBox);
            Assert.Equal(Size.Empty, control.MinimumSize);
            Assert.False(control.Modal);
            Assert.Equal(1, control.Opacity);
            Assert.Empty(control.OwnedForms);
            Assert.Null(control.Owner);
            Assert.Equal(Padding.Empty, control.Padding);
            Assert.Null(control.Parent);
            Assert.True(control.PreferredSize.Width > 0);
            Assert.True(control.PreferredSize.Height > 0);
            Assert.Equal("Microsoft\u00AE .NET", control.ProductName);
            Assert.False(control.RecreatingHandle);
            Assert.Null(control.Region);
            Assert.False(control.ResizeRedraw);
            Assert.Equal(new Rectangle(-1, -1, control.Width, control.Height), control.RestoreBounds);
            Assert.Equal(control.Width, control.Right);
            Assert.Equal(RightToLeft.No, control.RightToLeft);
            Assert.False(control.RightToLeftLayout);
            Assert.True(control.ShowFocusCues);
            Assert.True(control.ShowIcon);
            Assert.False(control.ShowInTaskbar);
            Assert.True(control.ShowKeyboardCues);
            Assert.False(control.ShowWithoutActivation);
            Assert.Null(control.Site);
            Assert.Equal(new Size(control.Width, control.Height), control.Size);
            Assert.Equal(SizeGripStyle.Auto, control.SizeGripStyle);
            Assert.Equal(FormStartPosition.CenterParent, control.StartPosition);
            Assert.Equal(0, control.TabIndex);
            Assert.True(control.TabStop);
            Assert.Equal("Properties", control.Text);
            Assert.Equal(0, control.Top);
            Assert.True(control.TopLevel);
            Assert.Same(control, control.TopLevelControl);
            Assert.False(control.TopMost);
            Assert.Equal(Color.Empty, control.TransparencyKey);
            Assert.False(control.UseWaitCursor);
            Assert.False(control.Visible);
            Assert.NotNull(control.VerticalScroll);
            Assert.Same(control.VerticalScroll, control.VerticalScroll);
            Assert.False(control.VScroll);
            Assert.True(control.Width > 0);
            Assert.Equal(FormWindowState.Normal, control.WindowState);

            Assert.False(control.IsHandleCreated);
        }

        [WinFormsFact]
        public void ComponentEditorComponentEditorForm_CreateParams_GetDefault_ReturnsExpected()
        {
            using var component = new Component();
            using var control = new SubComponentEditorForm(component, Array.Empty<Type>());
            CreateParams createParams = control.CreateParams;
            Assert.Equal("Properties", createParams.Caption);
            Assert.Null(createParams.ClassName);
            Assert.Equal(0x8, createParams.ClassStyle);
            Assert.Equal(0x10001, createParams.ExStyle);
            Assert.Equal(control.Height, createParams.Height);
            Assert.Equal(IntPtr.Zero, createParams.Parent);
            Assert.Null(createParams.Param);
            Assert.Equal(0x2C80000, createParams.Style);
            Assert.Equal(control.Width, createParams.Width);
            Assert.Equal(int.MinValue, createParams.X);
            Assert.Equal(int.MinValue, createParams.Y);
            Assert.Same(createParams, control.CreateParams);
            Assert.False(control.IsHandleCreated);
        }

        [WinFormsFact]
        public void ComponentEditorComponentEditorForm_GetAutoSizeMode_Invoke_ReturnsExpected()
        {
            using var component = new Component();
            using var control = new SubComponentEditorForm(component, Array.Empty<Type>());
            Assert.Equal(AutoSizeMode.GrowOnly, control.GetAutoSizeMode());
        }

        [WinFormsTheory]
        [InlineData(0, true)]
        [InlineData(SubComponentEditorForm.ScrollStateAutoScrolling, false)]
        [InlineData(SubComponentEditorForm.ScrollStateFullDrag, false)]
        [InlineData(SubComponentEditorForm.ScrollStateHScrollVisible, false)]
        [InlineData(SubComponentEditorForm.ScrollStateUserHasScrolled, false)]
        [InlineData(SubComponentEditorForm.ScrollStateVScrollVisible, false)]
        [InlineData(int.MaxValue, false)]
        [InlineData((-1), false)]
        public void ComponentEditorComponentEditorForm_GetScrollState_Invoke_ReturnsExpected(int bit, bool expected)
        {
            using var component = new Component();
            using var control = new SubComponentEditorForm(component, Array.Empty<Type>());
            Assert.Equal(expected, control.GetScrollState(bit));
        }

        [WinFormsTheory]
        [InlineData(ControlStyles.ContainerControl, true)]
        [InlineData(ControlStyles.UserPaint, true)]
        [InlineData(ControlStyles.Opaque, false)]
        [InlineData(ControlStyles.ResizeRedraw, false)]
        [InlineData(ControlStyles.FixedWidth, false)]
        [InlineData(ControlStyles.FixedHeight, false)]
        [InlineData(ControlStyles.StandardClick, true)]
        [InlineData(ControlStyles.Selectable, true)]
        [InlineData(ControlStyles.UserMouse, false)]
        [InlineData(ControlStyles.SupportsTransparentBackColor, false)]
        [InlineData(ControlStyles.StandardDoubleClick, true)]
        [InlineData(ControlStyles.AllPaintingInWmPaint, false)]
        [InlineData(ControlStyles.CacheText, false)]
        [InlineData(ControlStyles.EnableNotifyMessage, false)]
        [InlineData(ControlStyles.DoubleBuffer, false)]
        [InlineData(ControlStyles.OptimizedDoubleBuffer, false)]
        [InlineData(ControlStyles.UseTextForAccessibility, true)]
        [InlineData((ControlStyles)0, true)]
        [InlineData((ControlStyles)int.MaxValue, false)]
        [InlineData((ControlStyles)(-1), false)]
        public void ComponentEditorComponentEditorForm_GetStyle_Invoke_ReturnsExpected(ControlStyles flag, bool expected)
        {
            using var component = new Component();
            using var control = new SubComponentEditorForm(component, Array.Empty<Type>());
            Assert.Equal(expected, control.GetStyle(flag));

            // Call again to test caching.
            Assert.Equal(expected, control.GetStyle(flag));
        }

        [WinFormsFact]
        public void ComponentEditorComponentEditorForm_GetTopLevel_Invoke_ReturnsExpected()
        {
            using var component = new Component();
            using var control = new SubComponentEditorForm(component, Array.Empty<Type>());
            Assert.True(control.GetTopLevel());
        }

        /*
                [WinFormsTheory]
                [CommonMemberData(nameof(CommonTestHelper.GetEventArgsTheoryData))]
                public void ComponentEditorForm_OnHandleCreated_Invoke_CallsHandleCreated(EventArgs eventArgs)
                {
                    using var component = new Component();
                    using var control = new SubComponentEditorForm(component, new Type[0]);
                    int callCount = 0;
                    EventHandler handler = (sender, e) =>
                    {
                        Assert.Same(control, sender);
                        Assert.Same(eventArgs, e);
                        callCount++;
                    };

                    // Call with handler.
                    control.HandleCreated += handler;
                    control.OnHandleCreated(eventArgs);
                    Assert.Equal(1, callCount);
                    Assert.False(control.IsHandleCreated);

                    // Remove handler.
                    control.HandleCreated -= handler;
                    control.OnHandleCreated(eventArgs);
                    Assert.Equal(1, callCount);
                    Assert.False(control.IsHandleCreated);
                }
        */

        [WinFormsTheory]
        [CommonMemberData(nameof(CommonTestHelper.GetEventArgsTheoryData))]
        public void ComponentEditorForm_OnHandleCreated_InvokeWithHandle_CallsHandleCreated(EventArgs eventArgs)
        {
            using var component = new Component();
            using var control = new SubComponentEditorForm(component, Array.Empty<Type>());
            Assert.NotEqual(IntPtr.Zero, control.Handle);
            int callCount = 0;
            EventHandler handler = (sender, e) =>
            {
                Assert.Same(control, sender);
                Assert.Same(eventArgs, e);
                callCount++;
            };

            // Call with handler.
            control.HandleCreated += handler;
            control.OnHandleCreated(eventArgs);
            Assert.Equal(1, callCount);
            Assert.True(control.IsHandleCreated);

            // Remove handler.
            control.HandleCreated -= handler;
            control.OnHandleCreated(eventArgs);
            Assert.Equal(1, callCount);
            Assert.True(control.IsHandleCreated);
        }

        [WinFormsTheory]
        [CommonMemberData(nameof(CommonTestHelper.GetEventArgsTheoryData))]
        public void ComponentEditorForm_OnHandleDestroyed_Invoke_CallsHandleDestroyed(EventArgs eventArgs)
        {
            using var component = new Component();
            using var control = new SubComponentEditorForm(component, Array.Empty<Type>());
            int callCount = 0;
            EventHandler handler = (sender, e) =>
            {
                Assert.Same(control, sender);
                Assert.Same(eventArgs, e);
                callCount++;
            };

            // Call with handler.
            control.HandleDestroyed += handler;
            control.OnHandleDestroyed(eventArgs);
            Assert.Equal(1, callCount);
            Assert.False(control.IsHandleCreated);

            // Remove handler.
            control.HandleDestroyed -= handler;
            control.OnHandleDestroyed(eventArgs);
            Assert.Equal(1, callCount);
            Assert.False(control.IsHandleCreated);
        }

        [WinFormsTheory]
        [CommonMemberData(nameof(CommonTestHelper.GetEventArgsTheoryData))]
        public void ComponentEditorForm_OnHandleDestroyed_InvokeWithHandle_CallsHandleDestroyed(EventArgs eventArgs)
        {
            using var component = new Component();
            using var control = new SubComponentEditorForm(component, Array.Empty<Type>());
            Assert.NotEqual(IntPtr.Zero, control.Handle);
            int callCount = 0;
            EventHandler handler = (sender, e) =>
            {
                Assert.Same(control, sender);
                Assert.Same(eventArgs, e);
                callCount++;
            };

            // Call with handler.
            control.HandleDestroyed += handler;
            control.OnHandleDestroyed(eventArgs);
            Assert.Equal(1, callCount);
            Assert.True(control.IsHandleCreated);

            // Remove handler.
            control.HandleDestroyed -= handler;
            control.OnHandleDestroyed(eventArgs);
            Assert.Equal(1, callCount);
            Assert.True(control.IsHandleCreated);
        }

        public class SubComponentEditorForm : ComponentEditorForm
        {
            public SubComponentEditorForm(object component, Type[] pageTypes) : base(component, pageTypes)
            {
            }

            public new const int ScrollStateAutoScrolling = ComponentEditorForm.ScrollStateAutoScrolling;

            public new const int ScrollStateHScrollVisible = ComponentEditorForm.ScrollStateHScrollVisible;

            public new const int ScrollStateVScrollVisible = ComponentEditorForm.ScrollStateVScrollVisible;

            public new const int ScrollStateUserHasScrolled = ComponentEditorForm.ScrollStateUserHasScrolled;

            public new const int ScrollStateFullDrag = ComponentEditorForm.ScrollStateFullDrag;

            public new SizeF AutoScaleFactor => base.AutoScaleFactor;

            public new bool CanEnableIme => base.CanEnableIme;

            public new bool CanRaiseEvents => base.CanRaiseEvents;

            public new CreateParams CreateParams => base.CreateParams;

            public new Cursor DefaultCursor => base.DefaultCursor;

            public new ImeMode DefaultImeMode => base.DefaultImeMode;

            public new Padding DefaultMargin => base.DefaultMargin;

            public new Size DefaultMaximumSize => base.DefaultMaximumSize;

            public new Size DefaultMinimumSize => base.DefaultMinimumSize;

            public new Padding DefaultPadding => base.DefaultPadding;

            public new Size DefaultSize => base.DefaultSize;

            public new bool DesignMode => base.DesignMode;

            public new bool DoubleBuffered
            {
                get => base.DoubleBuffered;
                set => base.DoubleBuffered = value;
            }

            public new EventHandlerList Events => base.Events;

            public new int FontHeight
            {
                get => base.FontHeight;
                set => base.FontHeight = value;
            }

            public new ImeMode ImeModeBase
            {
                get => base.ImeModeBase;
                set => base.ImeModeBase = value;
            }

            public new Rectangle MaximizedBounds => base.MaximizedBounds;

            public new bool ResizeRedraw
            {
                get => base.ResizeRedraw;
                set => base.ResizeRedraw = value;
            }

            public new bool ShowFocusCues => base.ShowFocusCues;

            public new bool ShowKeyboardCues => base.ShowKeyboardCues;

            public new bool ShowWithoutActivation => base.ShowWithoutActivation;

            public new bool HScroll
            {
                get => base.HScroll;
                set => base.HScroll = value;
            }

            public new bool VScroll
            {
                get => base.VScroll;
                set => base.VScroll = value;
            }

            public new AutoSizeMode GetAutoSizeMode() => base.GetAutoSizeMode();

            public new bool GetScrollState(int bit) => base.GetScrollState(bit);

            public new bool GetStyle(ControlStyles flag) => base.GetStyle(flag);

            public new bool GetTopLevel() => base.GetTopLevel();

            public new void OnHandleCreated(EventArgs e) => base.OnHandleCreated(e);

            public new void OnHandleDestroyed(EventArgs e) => base.OnHandleDestroyed(e);

            public new void WndProc(ref Message m) => base.WndProc(ref m);
        }
    }
}
