public static void OpenUndoHistory()
{
// Opens the window, otherwise focuses it if it’s already open.
if (s_Instance == null)
{
s_Instance = GetWindow <UndoHistoryWindow>();
}
else
{
GetWindow <UndoHistoryWindow>();
}
s_Instance.ScrollToCurrent();
}
public void OnEnable()
{
if (s_Instance == null)
{
this.titleContent = EditorGUIUtility.TrTextContentWithIcon("Undo History", "UnityEditor.HistoryWindow");
Undo.undoRedoPerformed += OnUndoRedoPerformed;
//root of the editorwindow
VisualElement root = rootVisualElement;
root.styleSheets.Add(EditorGUIUtility.Load(k_StyleCommon) as StyleSheet);
root.styleSheets.Add(EditorGUIUtility.Load(EditorGUIUtility.isProSkin ? k_StyleDark : k_StyleLight) as StyleSheet);
root.EnableInClassList("root", true);
var theListView = EditorGUIUtility.Load("UXML/Undo/UndoListView.uxml") as VisualTreeAsset;
theListView.CloneTree(root);
var visualTree = EditorGUIUtility.Load("UXML/Undo/UndoListItem.uxml") as VisualTreeAsset;
Func <VisualElement> makeItem = visualTree.Instantiate;
Action <VisualElement, int> bindItem = (e, i) =>
{
//get info on this action
var item = m_History[i];
//get the main container
var container = e.Q("HistoryItem");
//is this the the current state?
bool isCurrent = item.index == m_UndoCursor;
//set style class for the whole Container
container.EnableInClassList("current", isCurrent && m_ShowLatestFirst);
container.EnableInClassList("current-reverse", isCurrent && !m_ShowLatestFirst);
container.EnableInClassList("redo", !isCurrent && item.type == HistoryType.Redo);
container.EnableInClassList("undo", !isCurrent && (item.type == HistoryType.Undo || item.type == HistoryType.None));
//get the Action label and set it's text to this undo action
var label = e.Q("Text-Action") as Label;
label.text = item.undoName;
if (isCurrent)
{
m_HistoryListView.selectedIndex = i;
}
};
m_HistoryListView = root.Q <ListView>();
m_HistoryListView.bindItem = bindItem;
m_HistoryListView.makeItem = makeItem;
m_HistoryListView.itemsSource = m_History;
m_HistoryListView.RefreshItems();
m_HistoryListView.onSelectionChange += OnUndoSelectionChange;
m_LastUndos.Clear();
s_Instance = this;
}
wantsLessLayoutEvents = true;
}
