public void OnEnable()
{
var root = rootVisualElement;
var styleSheet = EditorGUIUtility.Load(s_StyleSheetPath) as StyleSheet;
root.styleSheets.Add(styleSheet);
var themedStyleSheet = EditorGUIUtility.isProSkin
? EditorGUIUtility.Load(s_DarkStyleSheetPath) as StyleSheet
: EditorGUIUtility.Load(s_LightStyleSheetPath) as StyleSheet;
root.styleSheets.Add(themedStyleSheet);
SampleTreeItem.ResetNextId();
var items = new List <ITreeViewItem>()
{
new SampleTreeItem("Styles", StylesExplorer.Create),
new SampleTreeItem("Button", ButtonSnippet.Create),
new SampleTreeItem("Scroller", ScrollerSnippet.Create),
new SampleTreeItem("Toggle", ToggleSnippet.Create),
new SampleTreeItem("Label", LabelSnippet.Create),
new SampleTreeItem("Text Field", TextFieldSnippet.Create),
new SampleTreeItem("HelpBox", HelpBoxSnippet.Create),
new SampleTreeItem("Object Field", ObjectFieldSnippet.Create),
new SampleTreeItem("List View", ListViewSnippet.Create),
new SampleTreeItem("Numeric Fields", MakeNumericFieldsPanel, new List <TreeViewItem <string> >()
{
new SampleTreeItem("Integer", IntegerFieldSnippet.Create),
new SampleTreeItem("Float", FloatFieldSnippet.Create),
new SampleTreeItem("Long", LongFieldSnippet.Create),
new SampleTreeItem("MinMaxSlider", MinMaxSliderSnippet.Create),
new SampleTreeItem("Slider", SliderSnippet.Create),
new SampleTreeItem("Vector2", Vector2FieldSnippet.Create),
new SampleTreeItem("Vector3", Vector3FieldSnippet.Create),
new SampleTreeItem("Vector4", Vector4FieldSnippet.Create),
new SampleTreeItem("Rect", RectFieldSnippet.Create),
new SampleTreeItem("Bounds", BoundsFieldSnippet.Create),
new SampleTreeItem("SliderInt", SliderIntSnippet.Create),
new SampleTreeItem("Vector2Int", Vector2IntFieldSnippet.Create),
new SampleTreeItem("Vector3Int", Vector3IntFieldSnippet.Create),
new SampleTreeItem("RectInt", RectIntFieldSnippet.Create),
new SampleTreeItem("BoundsInt", BoundsIntFieldSnippet.Create)
}),
new SampleTreeItem("Value Fields", MakeValueFieldsPanel, new List <TreeViewItem <string> >()
{
new SampleTreeItem("Color", ColorFieldSnippet.Create),
new SampleTreeItem("Curve", CurveFieldSnippet.Create),
new SampleTreeItem("Gradient", GradientFieldSnippet.Create)
}),
new SampleTreeItem("Choice Fields", MakeChoiceFieldsPanel, new List <TreeViewItem <string> >()
{
new SampleTreeItem("Enum", EnumFieldSnippet.Create),
new SampleTreeItem("EnumFlags", EnumFlagsFieldSnippet.Create),
new SampleTreeItem("Popup", PopupFieldSnippet.Create),
new SampleTreeItem("Tag", TagFieldSnippet.Create),
new SampleTreeItem("Mask", MaskFieldSnippet.Create),
new SampleTreeItem("Layer", LayerFieldSnippet.Create),
new SampleTreeItem("LayerMask", LayerMaskFieldSnippet.Create)
}),
};
Func <VisualElement> makeItem = () =>
{
var box = new VisualElement();
box.AddToClassList(k_TreeItemClassName);
var label = new Label();
label.AddToClassList(k_TreeItemLabelClassName);
box.Add(label);
return(box);
};
Action <VisualElement, ITreeViewItem> bindItem = (element, item) =>
{
(element.ElementAt(0) as Label).text = (item as SampleTreeItem).data;
element.userData = item;
};
Action <IEnumerable <ITreeViewItem> > onSelectionChanged = selectedItems =>
{
var item = (SampleTreeItem)selectedItems.FirstOrDefault();
if (item == null)
{
return;
}
m_ContentPanel.Clear();
m_ContentPanel.Add(item.makeItem(item));
};
var treeView = new TreeView()
{
name = k_TreeViewName
};
treeView.AddToClassList(k_TreeViewClassName);
m_ContentPanel = new VisualElement()
{
name = k_ContentPanelName
};
m_ContentPanel.AddToClassList(k_ContentPanelClassName);
var splitter = new DebuggerSplitter();
splitter.AddToClassList(k_SplitterClassName);
splitter.leftPane.style.width = k_SplitterLeftPaneStartingWidth;
root.Add(splitter);
splitter.leftPane.Add(treeView);
splitter.rightPane.Add(m_ContentPanel);
treeView.viewDataKey = "samples-tree";
treeView.itemHeight = 20;
treeView.rootItems = items;
treeView.makeItem = makeItem;
treeView.bindItem = bindItem;
treeView.onSelectionChange += onSelectionChanged;
treeView.Refresh();
// Force TreeView to call onSelectionChanged when it restores its own selection from view data.
treeView.schedule.Execute(() =>
{
onSelectionChanged(treeView.selectedItems);
}).StartingIn(k_TreeViewSelectionRestoreDelay);
// Force TreeView to select something if nothing is selected.
treeView.schedule.Execute(() =>
{
if (treeView.selectedItems.Count() > 0)
{
return;
}
treeView.SetSelection(0);
// Auto-expand all items on load.
foreach (var item in treeView.rootItems)
{
treeView.ExpandItem(item.id);
}
}).StartingIn(k_TreeViewInitialSelectionDelay);
}
private VisualElement MakeEmptyPanel(SampleTreeItem item)
{
return(new Label(item.name + ": Nothing to see here."));
}
