IList <ITreeViewItem> GetTreeItemsFromVisualTreeIncludingParent(VisualElement parent, ref int nextId)
{
if (parent == null)
{
return(null);
}
var items = new List <ITreeViewItem>();
var id = nextId;
nextId++;
var item = new TreeViewItem <VisualElement>(id, parent);
items.Add(item);
var childItems = GetTreeItemsFromVisualTree(parent, ref nextId);
if (childItems == null)
{
return(items);
}
item.AddChildren(childItems);
return(items);
}
private void AddTreeItemsForElement(IList <ITreeViewItem> items, VisualElement ve, ref int nextId)
{
if (ve == null)
{
return;
}
int count = ve.hierarchy.childCount;
if (count == 0)
{
return;
}
for (int i = 0; i < count; i++)
{
var child = ve.hierarchy[i];
var treeItem = new TreeViewItem <VisualElement>(nextId, child);
items.Add(treeItem);
nextId++;
var childItems = new List <ITreeViewItem>();
AddTreeItemsForElement(childItems, child, ref nextId);
if (childItems.Count == 0)
{
continue;
}
treeItem.AddChildren(childItems);
}
}
IList <ITreeViewItem> GetTreeItemsFromVisualTree(VisualElement parent, ref int nextId)
{
List <ITreeViewItem> items = null;
if (parent == null)
{
return(null);
}
int count = parent.hierarchy.childCount;
if (count == 0)
{
return(null);
}
for (int i = 0; i < count; i++)
{
var element = parent.hierarchy[i];
if (element.name == BuilderConstants.SpecialVisualElementInitialMinSizeName)
{
continue;
}
if (items == null)
{
items = new List <ITreeViewItem>();
}
var id = 0;
var linkedAsset = element.GetVisualElementAsset();
if (linkedAsset != null)
{
id = linkedAsset.id;
}
else
{
id = nextId;
nextId++;
}
var item = new TreeViewItem <VisualElement>(id, element);
items.Add(item);
var childItems = GetTreeItemsFromVisualTree(element, ref nextId);
if (childItems == null)
{
continue;
}
item.AddChildren(childItems);
}
return(items);
}
/// <summary>
/// 生成树形菜单
/// </summary>
public void GenerateTreeView()
{
//删除可能已经存在的树形菜单元素
if (_treeViewItems != null)
{
for (int i = 0; i < _treeViewItems.Count; i++)
{
Destroy(_treeViewItems[i]);
}
}
_treeViewItems.Clear();
_tmpTree.Clear();
for (int i = 0; i < Data.Count; i++)
{
GameObject item = null;
if (Data[i].ParentID == -1)
{
item = Instantiate(FirstLevelTemplate);
item.GetComponent <TreeViewItem>().SetHierarchy(0);
item.GetComponent <TreeViewItem>().SetParent(null);
item.SetActive(true);
}
else
{
item = Instantiate(SecondLevelTemplate);
TreeViewItem tvi = null;
tvi = _tmpTree[Data[i].ParentID].GetComponent <TreeViewItem>();
item.GetComponent <TreeViewItem>().SetHierarchy(tvi.GetHierarchy() + 1);
item.GetComponent <TreeViewItem>().SetParent(tvi);
item.transform.SetSiblingIndex(tvi.GetHierarchy() + 1);
tvi.AddChildren(item.GetComponent <TreeViewItem>());
item.SetActive(false);//默认2级隐藏
}
if (!_tmpTree.ContainsKey(Data[i].SelfID))
{
_tmpTree.Add(Data[i].SelfID, item);
}
item.transform.name = Data[i].SelfID.ToString();
item.transform.Find("TreeViewText").GetComponent <Text>().text = Data[i].Name;
item.transform.SetParent(TreeItems);
item.transform.localPosition = Vector3.zero;
item.transform.localScale = Vector3.one;
item.transform.localRotation = Quaternion.Euler(Vector3.zero);
_treeViewItems.Add(item);
}
RefreshTreeView();
foreach (var vi in _treeViewItems)
{
ChangeChildren(vi.GetComponent <TreeViewItem>(), false);
}
}
/// <summary>
/// 生成树形菜单
/// </summary>
public void GenerateTreeView()
{
//删除可能已经存在的树形菜单元素
if (_treeViewItems != null)
{
for (int i = 0; i < _treeViewItems.Count; i++)
{
Destroy(_treeViewItems[i]);
}
_treeViewItems.Clear();
}
//重新创建树形菜单元素
_treeViewItems = new List <GameObject>();
for (int i = 0; i < Data.Count; i++)
{
GameObject item = Instantiate(Template);
if (Data[i].ParentID == -1)
{
item.GetComponent <TreeViewItem>().SetHierarchy(0);
item.GetComponent <TreeViewItem>().SetParent(null);
}
else
{
TreeViewItem tvi = _treeViewItems[Data[i].ParentID].GetComponent <TreeViewItem>();
item.GetComponent <TreeViewItem>().SetHierarchy(tvi.GetHierarchy() + 1);
item.GetComponent <TreeViewItem>().SetParent(tvi);
item.GetComponent <TreeViewItem>().SetData(Data[i]);
tvi.AddChildren(item.GetComponent <TreeViewItem>());
}
item.transform.name = "TreeViewItem";
item.transform.Find("TreeViewText").GetComponent <Text>().text = Data[i].Name;
item.transform.SetParent(TreeItems);
item.transform.localPosition = Vector3.zero;
item.transform.localScale = Vector3.one;
item.transform.localRotation = Quaternion.Euler(Vector3.zero);
item.SetActive(true);
_treeViewItems.Add(item);
}
}
IList <ITreeViewItem> GenerateItemList(int count, ref int nextId)
{
var items = new List <ITreeViewItem>(count);
for (int i = 0; i < count; ++i)
{
var currentId = nextId;
nextId++;
var newItem = new TreeViewItem <int>(currentId, i);
if (count > 2)
{
newItem.AddChildren(GenerateItemList(count / 2, ref nextId));
}
items.Add(newItem);
}
return(items);
}
private IList <ITreeViewItem> GetTreeItemsFromVisualTree(VisualElement parent, ref int nextId)
{
List <ITreeViewItem> items = null;
if (parent == null)
{
return(null);
}
int count = parent.hierarchy.childCount;
if (count == 0)
{
return(null);
}
for (int i = 0; i < count; i++)
{
if (items == null)
{
items = new List <ITreeViewItem>();
}
var element = parent.hierarchy[i];
var item = new TreeViewItem <VisualElement>(nextId, element);
items.Add(item);
nextId++;
var childItems = GetTreeItemsFromVisualTree(element, ref nextId);
if (childItems == null)
{
continue;
}
item.AddChildren(childItems);
}
return(items);
}
public void RebuildTree(IPanelDebug panelDebug)
{
if (!hierarchyHasChanged && m_CurrentPanelDebug == panelDebug)
{
return;
}
m_CurrentPanelDebug = panelDebug;
m_Container.Clear();
int nextId = 1;
m_TreeRootItems.Clear();
var visualTree = panelDebug?.visualTree;
if (visualTree != null)
{
var rootItem = new TreeViewItem <VisualElement>(nextId++, visualTree);
m_TreeRootItems.Add(rootItem);
var childItems = new List <ITreeViewItem>();
AddTreeItemsForElement(childItems, visualTree, ref nextId);
rootItem.AddChildren(childItems);
}
Func <VisualElement> makeItem = () =>
{
var element = new VisualElement();
element.name = "unity-treeview-item-content";
element.RegisterCallback <MouseEnterEvent>((e) =>
{
HighlightItemInTargetWindow(e.target as VisualElement);
});
element.RegisterCallback <MouseLeaveEvent>((e) =>
{
UnhighlightItemInTargetWindow(e.target as VisualElement);
});
return(element);
};
// Clear selection which would otherwise persist via view data persistence.
m_TreeView?.ClearSelection();
m_TreeView = new TreeView(m_TreeRootItems, 20, makeItem, FillItem);
m_TreeView.style.flexGrow = 1;
m_TreeView.onSelectionChange += items =>
{
if (m_SelectElementCallback == null)
{
return;
}
if (!items.Any())
{
m_SelectElementCallback(null);
return;
}
var item = items.First() as TreeViewItem <VisualElement>;
var element = item != null ? item.data : null;
m_SelectElementCallback(element);
};
m_Container.Add(m_TreeView);
hierarchyHasChanged = false;
}