File size: 4,146 Bytes
18a519f | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 | #if UNITY_EDITOR
using System;
using System.Linq;
namespace UnityEngine.InputSystem.Editor
{
[Serializable]
internal class AdvancedDropdownState
{
[Serializable]
private class AdvancedDropdownItemState
{
public AdvancedDropdownItemState(AdvancedDropdownItem item)
{
itemId = item.id;
}
public int itemId;
public int selectedIndex = -1;
public Vector2 scroll;
}
[SerializeField]
private AdvancedDropdownItemState[] states = new AdvancedDropdownItemState[0];
private AdvancedDropdownItemState m_LastSelectedState;
private AdvancedDropdownItemState GetStateForItem(AdvancedDropdownItem item)
{
if (m_LastSelectedState != null && m_LastSelectedState.itemId == item.id)
return m_LastSelectedState;
for (int i = 0; i < states.Length; i++)
{
if (states[i].itemId == item.id)
{
m_LastSelectedState = states[i];
return m_LastSelectedState;
}
}
Array.Resize(ref states, states.Length + 1);
states[states.Length - 1] = new AdvancedDropdownItemState(item);
m_LastSelectedState = states[states.Length - 1];
return states[states.Length - 1];
}
internal void MoveDownSelection(AdvancedDropdownItem item)
{
var state = GetStateForItem(item);
var selectedIndex = state.selectedIndex;
do
{
++selectedIndex;
}
while (selectedIndex < item.children.Count() && item.children.ElementAt(selectedIndex).IsSeparator());
if (selectedIndex >= item.children.Count())
selectedIndex = 0;
if (selectedIndex < item.children.Count())
SetSelectionOnItem(item, selectedIndex);
}
internal void MoveUpSelection(AdvancedDropdownItem item)
{
var state = GetStateForItem(item);
var selectedIndex = state.selectedIndex;
do
{
--selectedIndex;
}
while (selectedIndex >= 0 && item.children.ElementAt(selectedIndex).IsSeparator());
if (selectedIndex < 0)
selectedIndex = item.children.Count() - 1;
if (selectedIndex >= 0)
SetSelectionOnItem(item, selectedIndex);
}
internal void SetSelectionOnItem(AdvancedDropdownItem item, int selectedIndex)
{
var state = GetStateForItem(item);
if (selectedIndex < 0)
{
state.selectedIndex = 0;
}
else if (selectedIndex >= item.children.Count())
{
state.selectedIndex = item.children.Count() - 1;
}
else
{
state.selectedIndex = selectedIndex;
}
}
internal void ClearSelectionOnItem(AdvancedDropdownItem item)
{
GetStateForItem(item).selectedIndex = -1;
}
internal int GetSelectedIndex(AdvancedDropdownItem item)
{
return GetStateForItem(item).selectedIndex;
}
internal void SetSelectedIndex(AdvancedDropdownItem item, int index)
{
GetStateForItem(item).selectedIndex = index;
}
internal AdvancedDropdownItem GetSelectedChild(AdvancedDropdownItem item)
{
var index = GetSelectedIndex(item);
if (!item.children.Any() || index < 0 || index >= item.children.Count())
return null;
return item.children.ElementAt(index);
}
internal Vector2 GetScrollState(AdvancedDropdownItem item)
{
return GetStateForItem(item).scroll;
}
internal void SetScrollState(AdvancedDropdownItem item, Vector2 scrollState)
{
GetStateForItem(item).scroll = scrollState;
}
}
}
#endif // UNITY_EDITOR
|