public static void RemoveStyleSheet(this VisualElementAsset vea, string styleSheetPath)
{
if (!vea.GetStyleSheetPaths().Contains(styleSheetPath))
{
return;
}
vea.GetStyleSheetPaths().RemoveAll((s) => s == styleSheetPath);
}
public static void AddStyleSheetPath(this VisualElementAsset vea, string styleSheetPath)
{
if (string.IsNullOrEmpty(styleSheetPath) || vea.GetStyleSheetPaths().Contains(styleSheetPath))
{
return;
}
vea.GetStyleSheetPaths().Add(styleSheetPath);
}
static void GetAllReferencedStyleSheets(VisualElementAsset vea, HashSet <StyleSheet> sheets)
{
#if UNITY_2019_3_OR_NEWER
var styleSheets = vea.stylesheets;
if (styleSheets != null)
{
foreach (var styleSheet in styleSheets)
{
if (styleSheet != null) // Possible if the path is not valid.
{
sheets.Add(styleSheet);
}
}
}
#endif
var styleSheetPaths = vea.GetStyleSheetPaths();
if (styleSheetPaths != null)
{
foreach (var sheetPath in styleSheetPaths)
{
var sheetAsset = AssetDatabase.LoadAssetAtPath <StyleSheet>(sheetPath);
if (sheetAsset == null)
{
sheetAsset = Resources.Load <StyleSheet>(sheetPath);
if (sheetAsset == null)
{
continue;
}
}
sheets.Add(sheetAsset);
}
}
}
static void GetAllReferencedStyleSheets(VisualElementAsset vea, HashSet <StyleSheet> sheets)
{
var styleSheets = vea.stylesheets;
if (styleSheets != null)
{
foreach (var styleSheet in styleSheets)
{
if (styleSheet != null) // Possible if the path is not valid.
{
sheets.Add(styleSheet);
}
}
}
var styleSheetPaths = vea.GetStyleSheetPaths();
if (styleSheetPaths != null)
{
foreach (var sheetPath in styleSheetPaths)
{
var sheetAsset = BuilderPackageUtilities.LoadAssetAtPath <StyleSheet>(sheetPath);
if (sheetAsset == null)
{
sheetAsset = Resources.Load <StyleSheet>(sheetPath);
if (sheetAsset == null)
{
continue;
}
}
sheets.Add(sheetAsset);
}
}
}
public static void ClearStyleSheets(this VisualElementAsset vea)
{
#if UNITY_2019_3_OR_NEWER
vea.stylesheets.Clear();
#endif
vea.GetStyleSheetPaths().Clear();
}
static void GenerateUXMLRecursive(
VisualTreeAsset vta, string vtaPath, VisualElementAsset root,
Dictionary <int, List <VisualElementAsset> > idToChildren,
StringBuilder stringBuilder, int depth, bool writingToFile)
{
Indent(stringBuilder, depth);
stringBuilder.Append("<");
AppendElementTypeName(root, stringBuilder);
// Add all non-style attributes.
AppendElementNonStyleAttributes(root, stringBuilder, writingToFile);
// Add style classes to class attribute.
if (root.classes != null && root.classes.Length > 0)
{
stringBuilder.Append(" class=\"");
for (int i = 0; i < root.classes.Length; i++)
{
if (i > 0)
{
stringBuilder.Append(" ");
}
stringBuilder.Append(root.classes[i]);
}
stringBuilder.Append("\"");
}
// Add inline StyleSheet attribute.
if (root.ruleIndex != -1)
{
if (vta.inlineSheet == null)
{
Debug.LogWarning("VisualElementAsset has a RuleIndex but no inlineStyleSheet");
}
else
{
StyleRule r = vta.inlineSheet.rules[root.ruleIndex];
if (r.properties != null && r.properties.Length > 0)
{
var ruleBuilder = new StringBuilder();
var exportOptions = new UssExportOptions();
exportOptions.propertyIndent = string.Empty;
StyleSheetToUss.ToUssString(vta.inlineSheet, exportOptions, r, ruleBuilder);
var ruleStr = ruleBuilder.ToString();
// Need to remove newlines here before we give it to
// AppendElementAttribute() so we don't add " " everywhere.
ruleStr = ruleStr.Replace("\n", " ");
ruleStr = ruleStr.Replace("\r", "");
ruleStr = ruleStr.Trim();
AppendElementAttribute("style", ruleStr, stringBuilder);
}
}
}
// If we have no children, avoid adding the full end tag and just end the open tag.
bool hasChildTags = false;
// Add special children.
// TODO: What's the difference between these two ifdef options?
#if false
var styleSheets = root.stylesheets;
if (styleSheets != null && styleSheets.Count > 0)
{
bool newLineAdded = false;
foreach (var styleSheet in styleSheets)
{
var path = AssetDatabase.GetAssetPath(styleSheet);
ProcessStyleSheetPath(
vtaPath,
path, stringBuilder, depth,
ref newLineAdded, ref hasChildTags);
}
}
#else
var styleSheetPaths = root.GetStyleSheetPaths();
if (styleSheetPaths != null && styleSheetPaths.Count > 0)
{
bool newLineAdded = false;
foreach (var path in styleSheetPaths)
{
ProcessStyleSheetPath(
vtaPath,
path, stringBuilder, depth,
ref newLineAdded, ref hasChildTags);
}
}
#endif
var templateAsset = root as TemplateAsset;
if (templateAsset != null && templateAsset.attributeOverrides != null && templateAsset.attributeOverrides.Count > 0)
{
if (!hasChildTags)
{
stringBuilder.Append(">");
stringBuilder.Append(BuilderConstants.NewlineCharFromEditorSettings);
}
var overridesMap = new Dictionary <string, List <TemplateAsset.AttributeOverride> >();
foreach (var attributeOverride in templateAsset.attributeOverrides)
{
if (!overridesMap.ContainsKey(attributeOverride.m_ElementName))
{
overridesMap.Add(attributeOverride.m_ElementName, new List <TemplateAsset.AttributeOverride>());
}
overridesMap[attributeOverride.m_ElementName].Add(attributeOverride);
}
foreach (var attributeOverridePair in overridesMap)
{
var elementName = attributeOverridePair.Key;
var overrides = attributeOverridePair.Value;
Indent(stringBuilder, depth + 1);
stringBuilder.Append("<AttributeOverrides");
AppendElementAttribute("element-name", elementName, stringBuilder);
foreach (var attributeOverride in overrides)
{
AppendElementAttribute(attributeOverride.m_AttributeName, attributeOverride.m_Value, stringBuilder);
}
stringBuilder.Append(" />");
stringBuilder.Append(BuilderConstants.NewlineCharFromEditorSettings);
}
hasChildTags = true;
}
// Iterate through child elements.
List <VisualElementAsset> children;
if (idToChildren != null && idToChildren.TryGetValue(root.id, out children) && children.Count > 0)
{
if (!hasChildTags)
{
stringBuilder.Append(">");
stringBuilder.Append(BuilderConstants.NewlineCharFromEditorSettings);
}
children.Sort(VisualTreeAssetUtilities.CompareForOrder);
foreach (VisualElementAsset childVea in children)
{
GenerateUXMLRecursive(
vta, vtaPath, childVea, idToChildren, stringBuilder,
depth + 1, writingToFile);
}
hasChildTags = true;
}
if (hasChildTags)
{
Indent(stringBuilder, depth);
stringBuilder.Append("</");
AppendElementTypeName(root, stringBuilder);
stringBuilder.Append(">");
stringBuilder.Append(BuilderConstants.NewlineCharFromEditorSettings);
}
else
{
stringBuilder.Append(" />");
stringBuilder.Append(BuilderConstants.NewlineCharFromEditorSettings);
}
}
public static void ClearStyleSheets(this VisualElementAsset vea)
{
vea.stylesheets.Clear();
vea.GetStyleSheetPaths().Clear();
}
public static void RemoveStyleSheetPath(this VisualElementAsset vea, string styleSheetPath)
{
vea.GetStyleSheetPaths().RemoveAll((s) => s == styleSheetPath);
}
static VisualElement CloneSetupRecursively(VisualTreeAsset vta, VisualElementAsset root,
Dictionary <int, List <VisualElementAsset> > idToChildren, CreationContext context)
{
// This is needed because of asset reloads during domain reloads where the
// stylesheet path might be a temporary instance id to a pure in-memory stylesheet.
List <string> originalStyleSheets = null;
#if UNITY_2019_3_OR_NEWER
if (root.stylesheetPaths != null && root.stylesheetPaths.Count > 0)
#else
if (root.stylesheets != null && root.stylesheets.Count > 0)
#endif
{
originalStyleSheets = root.GetStyleSheetPaths();
var strippedList = originalStyleSheets.Where(
(s) => !s.StartsWith(BuilderConstants.VisualTreeAssetStyleSheetPathAsInstanceIdSchemeName));
#if UNITY_2019_3_OR_NEWER
root.stylesheetPaths = strippedList.ToList();
#else
root.stylesheets = strippedList.ToList();
#endif
}
#if UNITY_2019_3_OR_NEWER
var resolvedSheets = new List <StyleSheet>();
foreach (var sheetPath in root.stylesheetPaths)
{
resolvedSheets.Add(AssetDatabase.LoadAssetAtPath <StyleSheet>(sheetPath));
}
root.stylesheets = resolvedSheets;
#endif
var ve = VisualTreeAsset.Create(root, context);
// Restore stylesheets.
if (originalStyleSheets != null)
#if UNITY_2019_3_OR_NEWER
{ root.stylesheetPaths = originalStyleSheets; }
#else
{ root.stylesheets = originalStyleSheets; }
#endif
// Linking the new element with its VisualElementAsset.
// All this copied code for this one line!
ve.SetProperty(BuilderConstants.ElementLinkedVisualElementAssetVEPropertyName, root);
// context.target is the created templateContainer
if (root.id == context.visualTreeAsset.contentContainerId)
{
if (context.target is TemplateContainer)
{
((TemplateContainer)context.target).SetContentContainer(ve);
}
else
{
Debug.LogError(
"Trying to clone a VisualTreeAsset with a custom content container into a element which is not a template container");
}
}
// if the current element had a slot-name attribute, put it in the resulting slot mapping
string slotName;
if (context.slotInsertionPoints != null && vta.TryGetSlotInsertionPoint(root.id, out slotName))
{
context.slotInsertionPoints.Add(slotName, ve);
}
if (root.classes != null)
{
for (int i = 0; i < root.classes.Length; i++)
{
ve.AddToClassList(root.classes[i]);
}
}
if (root.ruleIndex != -1)
{
if (vta.inlineSheet == null)
{
Debug.LogWarning("VisualElementAsset has a RuleIndex but no inlineStyleSheet");
}
else
{
var rule = vta.inlineSheet.rules[root.ruleIndex];
#if UNITY_2020_1_OR_NEWER
ve.SetInlineRule(vta.inlineSheet, rule);
#elif UNITY_2019_3_OR_NEWER
var stylesData = new VisualElementStylesData(false);
ve.SetInlineStyles(stylesData);
s_StylePropertyReader.SetInlineContext(vta.inlineSheet, rule, root.ruleIndex);
stylesData.ApplyProperties(s_StylePropertyReader, null);
#else
var stylesData = new VisualElementStylesData(false);
ve.SetInlineStyles(stylesData);
var propIds = StyleSheetCache.GetPropertyIDs(vta.inlineSheet, root.ruleIndex);
stylesData.ApplyRule(vta.inlineSheet, Int32.MaxValue, rule, propIds);
#endif
}
}
var templateAsset = root as TemplateAsset;
if (templateAsset != null)
{
var templatePath = vta.GetPathFromTemplateName(templateAsset.templateAlias);
ve.SetProperty(BuilderConstants.LibraryItemLinkedTemplateContainerPathVEPropertyName, templatePath);
}
List <VisualElementAsset> children;
if (idToChildren.TryGetValue(root.id, out children))
{
children.Sort(VisualTreeAssetUtilities.CompareForOrder);
foreach (VisualElementAsset childVea in children)
{
// this will fill the slotInsertionPoints mapping
VisualElement childVe = CloneSetupRecursively(vta, childVea, idToChildren, context);
if (childVe == null)
{
continue;
}
// if the parent is not a template asset, just add the child to whatever hierarchy we currently have
// if ve is a scrollView (with contentViewport as contentContainer), this will go to the right place
if (templateAsset == null)
{
ve.Add(childVe);
continue;
}
int index = templateAsset.slotUsages == null
? -1
: templateAsset.slotUsages.FindIndex(u => u.assetId == childVea.id);
if (index != -1)
{
VisualElement parentSlot;
string key = templateAsset.slotUsages[index].slotName;
Assert.IsFalse(String.IsNullOrEmpty(key),
"a lost name should not be null or empty, this probably points to an importer or serialization bug");
if (context.slotInsertionPoints == null ||
!context.slotInsertionPoints.TryGetValue(key, out parentSlot))
{
Debug.LogErrorFormat("Slot '{0}' was not found. Existing slots: {1}", key,
context.slotInsertionPoints == null
? String.Empty
: String.Join(", ",
System.Linq.Enumerable.ToArray(context.slotInsertionPoints.Keys)));
ve.Add(childVe);
}
else
{
parentSlot.Add(childVe);
}
}
else
{
ve.Add(childVe);
}
}
}
if (templateAsset != null && context.slotInsertionPoints != null)
{
context.slotInsertionPoints.Clear();
}
return(ve);
}