// Unity C# reference source

// Copyright (c) Unity Technologies. For terms of use, see

// https://unity3d.com/legal/licenses/Unity_Reference_Only_License

using UnityEngine.UIElements;

namespace UnityEditor.Overlays

{

class DropdownToggle : BaseField<bool>

{

public new static readonly string ussClassName = "unity-dropdown-toggle";

public static readonly string dropdownClassName = ussClassName + "__dropdown";

public static readonly string toggleClassName = ussClassName + "__toggle";

public static readonly string toggleIconClassName = ussClassName + "__icon";

readonly Button m_Toggle;

readonly Button m_DropdownButton;

public Button dropdownButton => m_DropdownButton;

public DropdownToggle() : this(null) {}

public DropdownToggle(string label) : base(label)

{

AddToClassList(ussClassName);

m_Toggle = new Button(ToggleValue);

m_Toggle.AddToClassList(toggleClassName);

var icon = new VisualElement();

icon.AddToClassList(toggleIconClassName);

icon.pickingMode = PickingMode.Ignore;

m_Toggle.Add(icon);

m_DropdownButton = new Button();

m_DropdownButton.AddToClassList(dropdownClassName);

var arrow = new VisualElement();

arrow.AddToClassList("unity-icon-arrow");

arrow.pickingMode = PickingMode.Ignore;

m_DropdownButton.Add(arrow);

Add(m_Toggle);

Add(m_DropdownButton);

}

void ToggleValue()

{

value = !value;

}

public override void SetValueWithoutNotify(bool newValue)

{

if (newValue)

{

m_Toggle.pseudoStates |= PseudoStates.Checked;

m_DropdownButton.pseudoStates |= PseudoStates.Checked;

}

else

{

m_Toggle.pseudoStates &= ~PseudoStates.Checked;

m_DropdownButton.pseudoStates &= ~PseudoStates.Checked;

}

base.SetValueWithoutNotify(newValue);

}

}

}