PackageGroup.cs
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using System;
using System.Collections.Generic;
using System.Linq;
using UnityEngine.Experimental.UIElements;
namespace UnityEditor.PackageManager.UI
{
#if !UNITY_2018_3_OR_NEWER
internal class ArrowToggleFactory : UxmlFactory<ArrowToggle>
{
protected override ArrowToggle DoCreate(IUxmlAttributes bag, CreationContext cc)
{
return new ArrowToggle();
}
}
#endif
internal class ArrowToggle : TextElement
{
#if UNITY_2018_3_OR_NEWER
internal new class UxmlFactory : UxmlFactory<ArrowToggle> {}
#endif
public enum Direction
{
Left,
Right,
Up,
Down
}
private bool m_Expanded;
public bool expanded
{
get { return m_Expanded; }
set
{
m_Expanded = value;
if (m_Expanded)
{
SetDirection(Direction.Down);
RemoveFromClassList("collapsed");
AddToClassList("expanded");
}
else
{
SetDirection(Direction.Right);
RemoveFromClassList("expanded");
AddToClassList("collapsed");
}
}
}
public ArrowToggle()
: this(Direction.Right, "arrow")
{
}
public ArrowToggle(Direction direction, string defaultClass)
{
AddToClassList(defaultClass);
SetDirection(direction);
expanded = true;
}
public void Toggle()
{
expanded = !expanded;
}
public void SetDirection(Direction direction)
{
if (direction == Direction.Left)
text = "◄";
else if (direction == Direction.Right)
text = "►";
else if (direction == Direction.Up)
text = "▲";
else if (direction == Direction.Down)
text = "▼";
}
}
#if !UNITY_2018_3_OR_NEWER
internal class PackageGroupFactory : UxmlFactory<PackageGroup>
{
protected override PackageGroup DoCreate(IUxmlAttributes bag, CreationContext cc)
{
return new PackageGroup(bag.GetPropertyString("name"));
}
}
#endif
internal class PackageGroup : VisualElement
{
#if UNITY_2018_3_OR_NEWER
internal new class UxmlFactory : UxmlFactory<PackageGroup> {}
#endif
private const string k_HiddenHeaderClass = "hidden";
public event Action<bool> OnGroupToggle = delegate {};
private readonly VisualElement root;
public IEnumerable<PackageItem> packageItems { get { return List.Children().Cast<PackageItem>(); } }
public bool IsExpanded { get { return HeaderCaret != null && HeaderCaret.expanded; } }
public PackageGroup() : this(string.Empty)
{
}
public PackageGroup(string groupName, bool hidden = false)
{
name = groupName;
root = Resources.GetTemplate("PackageGroup.uxml");
Add(root);
HeaderTitle.text = groupName;
HeaderTitle.ShowTextTooltipOnSizeChange();
if (hidden)
HeaderContainer.AddToClassList(k_HiddenHeaderClass);
HeaderContainer.RegisterCallback<MouseDownEvent>(TogglePackageGroup);
}
private void TogglePackageGroup(MouseDownEvent evt)
{
if (evt.button == 0)
{
SetExpanded(!HeaderCaret.expanded);
if (OnGroupToggle != null)
OnGroupToggle.Invoke(HeaderCaret.expanded);
}
}
public bool Contains(PackageItem item)
{
return List.Contains(item);
}
public void SetExpanded(bool value)
{
if (HeaderCaret == null)
return;
HeaderCaret.expanded = value;
if (value)
{
RemoveFromClassList("collapsed");
AddToClassList("expanded");
}
else
{
RemoveFromClassList("expanded");
AddToClassList("collapsed");
}
}
internal PackageItem AddPackage(Package package)
{
var packageItem = new PackageItem(package) {packageGroup = this};
List.Add(packageItem);
return packageItem;
}
private VisualElement List { get { return root.Q<VisualElement>("groupContainer"); } }
private VisualElement HeaderContainer { get { return root.Q<VisualElement>("headerContainer"); } }
private Label HeaderTitle { get { return root.Q<Label>("headerTitle"); } }
private ArrowToggle HeaderCaret { get { return root.Q<ArrowToggle>("headerCaret"); } }
}
}