// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.

using System.Drawing;
using System.Windows.Forms.TestUtilities;
using Windows.Win32.UI.Accessibility;
using static System.Windows.Forms.ScrollBar;

namespace System.Windows.Forms.Tests.AccessibleObjects;

public class VScrollBar_ScrollBarThumbAccessibleObjectTests
{
    [WinFormsTheory]
    [CommonMemberData(typeof(ScrollBarTestHelper), nameof(ScrollBarTestHelper.ScrollBarAccessibleObject_TestData))]
    public void VScrollBarThumbAccessibleObject_GetChild_ReturnNull(bool createControl, RightToLeft rightToLeft, int minimum, int maximum, int value)
    {
        using VScrollBar scrollBar = GetVScrollBar(createControl, rightToLeft, minimum, maximum, value);
        ScrollBarThumbAccessibleObject accessibleObject = GetThumb(scrollBar);

        Assert.Null(accessibleObject.GetChild(-1));
        Assert.Null(accessibleObject.GetChild(0));
        Assert.Null(accessibleObject.GetChild(1));
        Assert.Equal(createControl, scrollBar.IsHandleCreated);
    }

    [WinFormsTheory]
    [CommonMemberData(typeof(ScrollBarTestHelper), nameof(ScrollBarTestHelper.ScrollBarAccessibleObject_TestData))]
    public void VScrollBarThumbAccessibleObject_GetChildCount_ReturnMinusOne(bool createControl, RightToLeft rightToLeft, int minimum, int maximum, int value)
    {
        using VScrollBar scrollBar = GetVScrollBar(createControl, rightToLeft, minimum, maximum, value);
        ScrollBarThumbAccessibleObject accessibleObject = GetThumb(scrollBar);

        Assert.Equal(-1, accessibleObject.GetChildCount());
        Assert.Equal(createControl, scrollBar.IsHandleCreated);
    }

    [WinFormsTheory]
    [CommonMemberData(typeof(ScrollBarTestHelper), nameof(ScrollBarTestHelper.ScrollBarAccessibleObject_TestData))]
    public void VScrollBarThumbAccessibleObject_DefaultAction_ReturnNotNull(bool createControl, RightToLeft rightToLeft, int minimum, int maximum, int value)
    {
        using VScrollBar scrollBar = GetVScrollBar(createControl, rightToLeft, minimum, maximum, value);
        ScrollBarThumbAccessibleObject accessibleObject = GetThumb(scrollBar);

        Assert.Equal(string.Empty, accessibleObject.DefaultAction);
        Assert.Equal(createControl, scrollBar.IsHandleCreated);
    }

    [WinFormsTheory]
    [CommonMemberData(typeof(ScrollBarTestHelper), nameof(ScrollBarTestHelper.ScrollBarAccessibleObject_WithoutCreateControl_TestData))]
    public void VScrollBarThumbAccessibleObject_Description_ReturnNotNull_HandleIsCreated(RightToLeft rightToLeft, int minimum, int maximum, int value)
    {
        using VScrollBar scrollBar = GetVScrollBar(createControl: true, rightToLeft, minimum, maximum, value);
        ScrollBarThumbAccessibleObject accessibleObject = GetThumb(scrollBar);

        Assert.NotEmpty(accessibleObject.Description);
        Assert.True(scrollBar.IsHandleCreated);
    }

    [WinFormsTheory]
    [CommonMemberData(typeof(ScrollBarTestHelper), nameof(ScrollBarTestHelper.ScrollBarAccessibleObject_WithoutCreateControl_TestData))]
    public void VScrollBarThumbAccessibleObject_Description_ReturnNull_HandleIsNotCreated(RightToLeft rightToLeft, int minimum, int maximum, int value)
    {
        using VScrollBar scrollBar = GetVScrollBar(createControl: false, rightToLeft, minimum, maximum, value);
        ScrollBarThumbAccessibleObject accessibleObject = GetThumb(scrollBar);

        Assert.Null(accessibleObject.Description);
        Assert.False(scrollBar.IsHandleCreated);
    }

    [WinFormsTheory]
    [CommonMemberData(typeof(ScrollBarTestHelper), nameof(ScrollBarTestHelper.ScrollBarAccessibleObject_WithoutCreateControl_TestData))]
    public void VScrollBarThumbAccessibleObject_Name_ReturnNotNull_HandleIsCreated(RightToLeft rightToLeft, int minimum, int maximum, int value)
    {
        using VScrollBar scrollBar = GetVScrollBar(createControl: true, rightToLeft, minimum, maximum, value);
        ScrollBarThumbAccessibleObject accessibleObject = GetThumb(scrollBar);

        Assert.NotEmpty(accessibleObject.Name);
        Assert.True(scrollBar.IsHandleCreated);
    }

    [WinFormsTheory]
    [CommonMemberData(typeof(ScrollBarTestHelper), nameof(ScrollBarTestHelper.ScrollBarAccessibleObject_WithoutCreateControl_TestData))]
    public void VScrollBarThumbAccessibleObject_Name_ReturnNull_HandleIsNotCreated(RightToLeft rightToLeft, int minimum, int maximum, int value)
    {
        using VScrollBar scrollBar = GetVScrollBar(createControl: false, rightToLeft, minimum, maximum, value);
        ScrollBarThumbAccessibleObject accessibleObject = GetThumb(scrollBar);

        Assert.Null(accessibleObject.Name);
        Assert.False(scrollBar.IsHandleCreated);
    }

    [WinFormsTheory]
    [CommonMemberData(typeof(ScrollBarTestHelper), nameof(ScrollBarTestHelper.ScrollBarAccessibleObject_WithoutCreateControl_TestData))]
    public void VScrollBarThumbAccessibleObject_Role_ReturnIndicator_HandleIsCreated(RightToLeft rightToLeft, int minimum, int maximum, int value)
    {
        using VScrollBar scrollBar = GetVScrollBar(createControl: true, rightToLeft, minimum, maximum, value);
        ScrollBarThumbAccessibleObject accessibleObject = GetThumb(scrollBar);

        Assert.Equal(AccessibleRole.Indicator, accessibleObject.Role);
        Assert.True(scrollBar.IsHandleCreated);
    }

    [WinFormsTheory]
    [CommonMemberData(typeof(ScrollBarTestHelper), nameof(ScrollBarTestHelper.ScrollBarAccessibleObject_WithoutCreateControl_TestData))]
    public void VScrollBarThumbAccessibleObject_Role_ReturnNone_HandleIsNotCreated(RightToLeft rightToLeft, int minimum, int maximum, int value)
    {
        using VScrollBar scrollBar = GetVScrollBar(createControl: false, rightToLeft, minimum, maximum, value);
        ScrollBarThumbAccessibleObject accessibleObject = GetThumb(scrollBar);

        Assert.Equal(AccessibleRole.None, accessibleObject.Role);
        Assert.False(scrollBar.IsHandleCreated);
    }

    [WinFormsTheory]
    [CommonMemberData(typeof(ScrollBarTestHelper), nameof(ScrollBarTestHelper.ScrollBarAccessibleObject_TestData))]
    public void VScrollBarThumbAccessibleObject_State_ReturnExpected(bool createControl, RightToLeft rightToLeft, int minimum, int maximum, int value)
    {
        using VScrollBar scrollBar = GetVScrollBar(createControl, rightToLeft, minimum, maximum, value);
        ScrollBarThumbAccessibleObject accessibleObject = GetThumb(scrollBar);

        Assert.Equal(AccessibleStates.None, accessibleObject.State);
        Assert.Equal(createControl, scrollBar.IsHandleCreated);
    }

    [WinFormsTheory]
    [CommonMemberData(typeof(ScrollBarTestHelper), nameof(ScrollBarTestHelper.ScrollBarAccessibleObject_TestData))]
    public void VScrollBarThumbAccessibleObject_InvokePattern_Supported(bool createControl, RightToLeft rightToLeft, int minimum, int maximum, int value)
    {
        using VScrollBar scrollBar = GetVScrollBar(createControl, rightToLeft, minimum, maximum, value);
        ScrollBarThumbAccessibleObject accessibleObject = GetThumb(scrollBar);

        Assert.False(accessibleObject.IsPatternSupported(UIA_PATTERN_ID.UIA_InvokePatternId));
        Assert.Equal(createControl, scrollBar.IsHandleCreated);
    }

    [WinFormsTheory]
    [CommonMemberData(typeof(ScrollBarTestHelper), nameof(ScrollBarTestHelper.ScrollBarAccessibleObject_BothButtonAreDisplayed_TestData))]
    public void VScrollBarThumbAccessibleObject_FragmentNavigate_ReturnExpected_BothPageButtonsAreDisplayed(RightToLeft rightToLeft, int minimum, int maximum, int value)
    {
        using VScrollBar scrollBar = GetVScrollBar(createControl: true, rightToLeft, minimum, maximum, value);
        var scrollBarAccessibleObject = (ScrollBar.ScrollBarAccessibleObject)scrollBar.AccessibilityObject;
        ScrollBarThumbAccessibleObject accessibleObject = scrollBarAccessibleObject.ThumbAccessibleObject;

        Assert.Equal(scrollBarAccessibleObject, accessibleObject.FragmentNavigate(NavigateDirection.NavigateDirection_Parent));
        Assert.Equal(scrollBarAccessibleObject.FirstPageButtonAccessibleObject, accessibleObject.FragmentNavigate(NavigateDirection.NavigateDirection_PreviousSibling));
        Assert.Equal(scrollBarAccessibleObject.LastPageButtonAccessibleObject, accessibleObject.FragmentNavigate(NavigateDirection.NavigateDirection_NextSibling));
        Assert.Null(accessibleObject.FragmentNavigate(NavigateDirection.NavigateDirection_FirstChild));
        Assert.Null(accessibleObject.FragmentNavigate(NavigateDirection.NavigateDirection_LastChild));
        Assert.True(scrollBar.IsHandleCreated);
    }

    [WinFormsTheory]
    [CommonMemberData(typeof(ScrollBarTestHelper), nameof(ScrollBarTestHelper.VScrollBarAccessibleObject_FirstPageButtonIsHidden_TestData))]
    public void VScrollBarThumbAccessibleObject_FragmentNavigate_ReturnExpected_FirstPageButtonIsHidden(RightToLeft rightToLeft, int minimum, int maximum, int value)
    {
        using VScrollBar scrollBar = GetVScrollBar(createControl: true, rightToLeft, minimum, maximum, value);
        var scrollBarAccessibleObject = (ScrollBar.ScrollBarAccessibleObject)scrollBar.AccessibilityObject;
        ScrollBarThumbAccessibleObject accessibleObject = scrollBarAccessibleObject.ThumbAccessibleObject;

        Assert.Equal(scrollBarAccessibleObject, accessibleObject.FragmentNavigate(NavigateDirection.NavigateDirection_Parent));
        Assert.Equal(scrollBarAccessibleObject.FirstLineButtonAccessibleObject, accessibleObject.FragmentNavigate(NavigateDirection.NavigateDirection_PreviousSibling));
        Assert.Equal(scrollBarAccessibleObject.LastPageButtonAccessibleObject, accessibleObject.FragmentNavigate(NavigateDirection.NavigateDirection_NextSibling));
        Assert.Null(accessibleObject.FragmentNavigate(NavigateDirection.NavigateDirection_FirstChild));
        Assert.Null(accessibleObject.FragmentNavigate(NavigateDirection.NavigateDirection_LastChild));
        Assert.True(scrollBar.IsHandleCreated);
    }

    [WinFormsTheory]
    [CommonMemberData(typeof(ScrollBarTestHelper), nameof(ScrollBarTestHelper.VScrollBarAccessibleObject_LastPageButtonIsHidden_TestData))]
    public void VScrollBarThumbAccessibleObject_FragmentNavigate_ReturnExpected_LastPageButtonIsHidden(RightToLeft rightToLeft, int minimum, int maximum, int value)
    {
        using VScrollBar scrollBar = GetVScrollBar(createControl: true, rightToLeft, minimum, maximum, value);
        var scrollBarAccessibleObject = (ScrollBar.ScrollBarAccessibleObject)scrollBar.AccessibilityObject;
        ScrollBarThumbAccessibleObject accessibleObject = scrollBarAccessibleObject.ThumbAccessibleObject;

        Assert.Equal(scrollBarAccessibleObject, accessibleObject.FragmentNavigate(NavigateDirection.NavigateDirection_Parent));
        Assert.Equal(scrollBarAccessibleObject.FirstPageButtonAccessibleObject, accessibleObject.FragmentNavigate(NavigateDirection.NavigateDirection_PreviousSibling));
        Assert.Equal(scrollBarAccessibleObject.LastLineButtonAccessibleObject, accessibleObject.FragmentNavigate(NavigateDirection.NavigateDirection_NextSibling));
        Assert.Null(accessibleObject.FragmentNavigate(NavigateDirection.NavigateDirection_FirstChild));
        Assert.Null(accessibleObject.FragmentNavigate(NavigateDirection.NavigateDirection_LastChild));
        Assert.True(scrollBar.IsHandleCreated);
    }

    [WinFormsTheory]
    [CommonMemberData(typeof(ScrollBarTestHelper), nameof(ScrollBarTestHelper.ScrollBarAccessibleObject_MinimumEqualsMaximum_TestData))]
    public void VScrollBarThumbAccessibleObject_FragmentNavigate_ReturnExpected_MinimumEqualsMaximum(RightToLeft rightToLeft, int minimum, int maximum, int value)
    {
        using VScrollBar scrollBar = GetVScrollBar(createControl: true, rightToLeft, minimum, maximum, value);
        var scrollBarAccessibleObject = (ScrollBar.ScrollBarAccessibleObject)scrollBar.AccessibilityObject;
        ScrollBarThumbAccessibleObject accessibleObject = scrollBarAccessibleObject.ThumbAccessibleObject;

        Assert.Equal(scrollBarAccessibleObject, accessibleObject.FragmentNavigate(NavigateDirection.NavigateDirection_Parent));
        Assert.Equal(scrollBarAccessibleObject.FirstLineButtonAccessibleObject, accessibleObject.FragmentNavigate(NavigateDirection.NavigateDirection_PreviousSibling));
        Assert.Equal(scrollBarAccessibleObject.LastLineButtonAccessibleObject, accessibleObject.FragmentNavigate(NavigateDirection.NavigateDirection_NextSibling));
        Assert.Null(accessibleObject.FragmentNavigate(NavigateDirection.NavigateDirection_FirstChild));
        Assert.Null(accessibleObject.FragmentNavigate(NavigateDirection.NavigateDirection_LastChild));
        Assert.True(scrollBar.IsHandleCreated);
    }

    [WinFormsTheory]
    [CommonMemberData(typeof(ScrollBarTestHelper), nameof(ScrollBarTestHelper.ScrollBarAccessibleObject_WithoutCreateControl_TestData))]
    public void VScrollBarThumbAccessibleObject_FragmentNavigate_ReturnNull_HandleIsNotCreated(RightToLeft rightToLeft, int minimum, int maximum, int value)
    {
        using VScrollBar scrollBar = GetVScrollBar(createControl: false, rightToLeft, minimum, maximum, value);
        ScrollBarThumbAccessibleObject accessibleObject = GetThumb(scrollBar);

        Assert.Null(accessibleObject.FragmentNavigate(NavigateDirection.NavigateDirection_Parent));
        Assert.Null(accessibleObject.FragmentNavigate(NavigateDirection.NavigateDirection_NextSibling));
        Assert.Null(accessibleObject.FragmentNavigate(NavigateDirection.NavigateDirection_PreviousSibling));
        Assert.Null(accessibleObject.FragmentNavigate(NavigateDirection.NavigateDirection_FirstChild));
        Assert.Null(accessibleObject.FragmentNavigate(NavigateDirection.NavigateDirection_LastChild));
        Assert.False(scrollBar.IsHandleCreated);
    }

    [WinFormsTheory]
    [CommonMemberData(typeof(ScrollBarTestHelper), nameof(ScrollBarTestHelper.ScrollBarAccessibleObject_TestData))]
    public void VScrollBarThumbAccessibleObject_GetPropertyValue_IsEnabledProperty_ReturnsTrue_OwnerEnabled(bool createControl, RightToLeft rightToLeft, int minimum, int maximum, int value)
    {
        using VScrollBar scrollBar = GetVScrollBar(createControl, rightToLeft, minimum, maximum, value);
        scrollBar.Enabled = true;
        ScrollBarThumbAccessibleObject accessibleObject = GetThumb(scrollBar);

        Assert.True((bool)accessibleObject.GetPropertyValue(UIA_PROPERTY_ID.UIA_IsEnabledPropertyId));
        Assert.Equal(createControl, scrollBar.IsHandleCreated);
    }

    [WinFormsTheory]
    [CommonMemberData(typeof(ScrollBarTestHelper), nameof(ScrollBarTestHelper.ScrollBarAccessibleObject_TestData))]
    public void VScrollBarThumbAccessibleObject_GetPropertyValue_IsEnabledProperty_ReturnsFalse_OwnerDisabled(bool createControl, RightToLeft rightToLeft, int minimum, int maximum, int value)
    {
        using VScrollBar scrollBar = GetVScrollBar(createControl, rightToLeft, minimum, maximum, value);
        scrollBar.Enabled = false;
        ScrollBarThumbAccessibleObject accessibleObject = GetThumb(scrollBar);

        Assert.False((bool)accessibleObject.GetPropertyValue(UIA_PROPERTY_ID.UIA_IsEnabledPropertyId));
        Assert.Equal(createControl, scrollBar.IsHandleCreated);
    }

    [WinFormsTheory]
    [CommonMemberData(typeof(ScrollBarTestHelper), nameof(ScrollBarTestHelper.ScrollBarAccessibleObject_TestData))]
    public void VScrollBarThumbAccessibleObject_IsDisplayed_ReturnsTrue_OwnerVisible(bool createControl, RightToLeft rightToLeft, int minimum, int maximum, int value)
    {
        using VScrollBar scrollBar = GetVScrollBar(createControl, rightToLeft, minimum, maximum, value);
        scrollBar.Visible = true;
        ScrollBarThumbAccessibleObject accessibleObject = GetThumb(scrollBar);

        Assert.True(accessibleObject.IsDisplayed);
        Assert.Equal(createControl, scrollBar.IsHandleCreated);
    }

    [WinFormsTheory]
    [CommonMemberData(typeof(ScrollBarTestHelper), nameof(ScrollBarTestHelper.ScrollBarAccessibleObject_TestData))]
    public void VScrollBarThumbAccessibleObject_IsDisplayed_ReturnsFalse_OwnerInvisible(bool createControl, RightToLeft rightToLeft, int minimum, int maximum, int value)
    {
        using VScrollBar scrollBar = GetVScrollBar(createControl, rightToLeft, minimum, maximum, value);
        scrollBar.Visible = false;
        ScrollBarThumbAccessibleObject accessibleObject = GetThumb(scrollBar);

        Assert.False(accessibleObject.IsDisplayed);
        Assert.Equal(createControl, scrollBar.IsHandleCreated);
    }

    private VScrollBar GetVScrollBar(bool createControl, RightToLeft rightToLeft, int minimum, int maximum, int value)
    {
        VScrollBar hScrollBar = new()
        {
            RightToLeft = rightToLeft,
            Value = value,
            Minimum = minimum,
            Maximum = maximum,
            Size = new Size(200, 50),
            SmallChange = 1,
            LargeChange = 2
        };

        if (createControl)
        {
            hScrollBar.CreateControl();
        }

        return hScrollBar;
    }

    private ScrollBarThumbAccessibleObject GetThumb(ScrollBar scrollBar)
    {
        var accessibleObject = (ScrollBar.ScrollBarAccessibleObject)scrollBar.AccessibilityObject;
        return accessibleObject.ThumbAccessibleObject;
    }
}
