public void UnpackTemplateContainer(VisualElement templateContainer, bool unpackCompletely = false)
{
if (templateContainer == null)
{
Debug.LogError("Template to unpack is null");
return;
}
var elementsToUnpack = new List <VisualElement>();
var rootVEA = templateContainer.GetVisualElementAsset();
var isRootElement = true;
VisualElementAsset rootUnpackedVEA = null;
elementsToUnpack.Add(templateContainer);
while (elementsToUnpack.Count > 0)
{
var elementToUnpack = elementsToUnpack[0];
var unpackedVE = new VisualElement();
var templateContainerParent = elementToUnpack.parent;
var templateContainerIndex = templateContainerParent.IndexOf(elementToUnpack);
// Create new unpacked element and add it in the hierarchy
templateContainerParent.Add(unpackedVE);
BuilderAssetUtilities.AddElementToAsset(m_PaneWindow.document, unpackedVE, templateContainerIndex + 1);
var linkedInstancedVTA = elementToUnpack.GetProperty(BuilderConstants.ElementLinkedInstancedVisualTreeAssetVEPropertyName) as VisualTreeAsset;
var linkedTA = elementToUnpack.GetVisualElementAsset() as TemplateAsset;
var linkedVTACopy = linkedInstancedVTA.DeepCopy();
var unpackedVEA = unpackedVE.GetVisualElementAsset();
var templateContainerVEA = elementToUnpack.GetVisualElementAsset();
var attributeOverrides = linkedTA.attributeOverrides;
var attributes = elementToUnpack.GetOverriddenAttributes();
foreach (var attribute in attributes)
{
unpackedVEA.SetAttributeValue(attribute.Key, attribute.Value);
}
if (isRootElement)
{
rootUnpackedVEA = unpackedVEA;
}
// Apply attribute overrides to elements in the unpacked element
BuilderAssetUtilities.ApplyAttributeOverridesToTreeAsset(attributeOverrides, linkedVTACopy);
// Move attribute overrides to new template containers
BuilderAssetUtilities.CopyAttributeOverridesToChildTemplateAssets(attributeOverrides, linkedVTACopy);
// Apply stylesheets to new element + inline rules
BuilderAssetUtilities.AddStyleSheetsFromTreeAsset(unpackedVEA, linkedInstancedVTA);
unpackedVEA.ruleIndex = templateContainerVEA.ruleIndex;
BuilderAssetUtilities.TransferAssetToAsset(m_PaneWindow.document, unpackedVEA, linkedVTACopy, false);
elementsToUnpack.Remove(elementToUnpack);
if (elementToUnpack != templateContainer)
{
BuilderAssetUtilities.DeleteElementFromAsset(m_PaneWindow.document, elementToUnpack, false);
elementToUnpack.RemoveFromHierarchy();
}
if (unpackCompletely && elementsToUnpack.Count == 0)
{
VisualElement tree = new VisualElement();
m_PaneWindow.document.activeOpenUXMLFile.visualTreeAsset.LinkedCloneTree(tree);
var newElement = tree.Query <VisualElement>().Where(x => x.GetVisualElementAsset() == rootUnpackedVEA).First();
var newTemplates = newElement.Query <TemplateContainer>().Where(x => x.GetVisualElementAsset() != null).ToList();
elementsToUnpack.AddRange(newTemplates);
isRootElement = false;
}
}
m_Selection.NotifyOfHierarchyChange();
m_PaneWindow.OnEnableAfterAllSerialization();
// Keep hierarchy tree state in the new unpacked element
var hierarchy = Builder.ActiveWindow.hierarchy;
hierarchy.elementHierarchyView.CopyTreeViewItemStates(rootVEA, rootUnpackedVEA);
// Delete old template element
BuilderAssetUtilities.DeleteElementFromAsset(m_PaneWindow.document, templateContainer, false);
templateContainer.RemoveFromHierarchy();
m_Selection.ClearSelection(null);
rootUnpackedVEA.Select();
m_Selection.NotifyOfHierarchyChange();
m_PaneWindow.OnEnableAfterAllSerialization();
}
