public override void Init(VisualElement ve, IUxmlAttributes bag, CreationContext cc)
{
base.Init(ve, bag, cc);
((INotifyValueChanged <TValueType>)ve).SetValueWithoutNotify(this.m_Value.GetValueFromBag(bag, cc));
}
public override void Init(VisualElement ve, IUxmlAttributes bag, CreationContext cc)
{
base.Init(ve, bag, cc);
((BaseField <TValueType>)ve).label = m_Label.GetValueFromBag(bag, cc);
}
public override void Init(VisualElement ve, IUxmlAttributes bag, CreationContext cc)
{
base.Init(ve, bag, cc);
((ITextElement)ve).text = m_Text.GetValueFromBag(bag, cc);
}
/// <summary>
/// Returns true.
/// </summary>
/// <param name="bag">The attribute bag.</param>
/// <remarks>
/// By default, accepts any attribute bags. Override this function if you want to make specific checks on the attribute bag.
/// </remarks>
/// <returns>Always true.</returns>
public virtual bool AcceptsAttributeBag(IUxmlAttributes bag, CreationContext cc)
{
return(true);
}
/// <summary>
/// Initialize a <see cref="VisualElement"/> instance with values from the UXML element attributes.
/// </summary>
/// <param name="ve">The VisualElement to initialize.</param>
/// <param name="bag">A bag of name-value pairs, one for each attribute of the UXML element.</param>
/// <param name="cc">When the element is created as part of a template instance inserted in another document, this contains information about the insertion point.</param>
/// <remarks>
/// Override this function in your traits class to initialize your C# object with values read from the UXML document.
/// </remarks>
public virtual void Init(VisualElement ve, IUxmlAttributes bag, CreationContext cc)
{
}
public bool TryGetValueFromBag(IUxmlAttributes bag, CreationContext cc, ref T value)
{
return(TryGetValueFromBag(bag, cc, ConvertValueToEnum, defaultValue, ref value));
}
internal bool TryGetValueFromBagAsString(IUxmlAttributes bag, CreationContext cc, out string value)
{
// Regardless of whether the attribute is overwridden or not, we want to error here
// if there is no valid name.
if (name == null && (m_ObsoleteNames == null || m_ObsoleteNames.Length == 0))
{
Debug.LogError("Attribute description has no name.");
value = null;
return(false);
}
string elementName;
bag.TryGetAttributeValue("name", out elementName);
if (!string.IsNullOrEmpty(elementName) && cc.attributeOverrides != null)
{
for (var i = 0; i < cc.attributeOverrides.Count; ++i)
{
if (cc.attributeOverrides[i].m_ElementName != elementName)
{
continue;
}
if (cc.attributeOverrides[i].m_AttributeName != name)
{
if (m_ObsoleteNames != null)
{
bool matchedObsoleteName = false;
for (var j = 0; j < m_ObsoleteNames.Length; j++)
{
if (cc.attributeOverrides[i].m_AttributeName == m_ObsoleteNames[j])
{
matchedObsoleteName = true;
break;
}
}
if (!matchedObsoleteName)
{
continue;
}
}
else
{
continue;
}
}
value = cc.attributeOverrides[i].m_Value;
return(true);
}
}
if (name == null)
{
// Check for:
// (m_ObsoleteNames == null || m_ObsoleteNames.Length == 0)
// moved at the top of method so we can assume we have obsolete names here.
for (var i = 0; i < m_ObsoleteNames.Length; i++)
{
if (bag.TryGetAttributeValue(m_ObsoleteNames[i], out value))
{
if (cc.visualTreeAsset != null)
{
}
return(true);
}
}
value = null;
return(false);
}
if (!bag.TryGetAttributeValue(name, out value))
{
if (m_ObsoleteNames != null)
{
for (var i = 0; i < m_ObsoleteNames.Length; i++)
{
if (bag.TryGetAttributeValue(m_ObsoleteNames[i], out value))
{
if (cc.visualTreeAsset != null)
{
}
return(true);
}
}
}
value = null;
return(false);
}
return(true);
}
public override T GetValueFromBag(IUxmlAttributes bag, CreationContext cc)
{
return(GetValueFromBag(bag, cc, ConvertValueToEnum, defaultValue));
}
public abstract T GetValueFromBag(IUxmlAttributes bag, CreationContext cc);
public override VisualElement Create(IUxmlAttributes bag, CreationContext cc)
{
return(null);
}
private VisualElement CloneSetupRecursively(VisualElementAsset root,
Dictionary <int, List <VisualElementAsset> > idToChildren, CreationContext context)
{
VisualElement ve = Create(root, context);
if (ve == null)
{
return(null);
}
// 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 && TryGetSlotInsertionPoint(root.id, out slotName))
{
context.slotInsertionPoints.Add(slotName, ve);
}
if (root.ruleIndex != -1)
{
if (inlineSheet == null)
{
Debug.LogWarning("VisualElementAsset has a RuleIndex but no inlineStyleSheet");
}
else
{
StyleRule r = inlineSheet.rules[root.ruleIndex];
ve.SetInlineRule(inlineSheet, r);
}
}
var templateAsset = root as TemplateAsset;
List <VisualElementAsset> children;
if (idToChildren.TryGetValue(root.id, out children))
{
children.Sort(CompareForOrder);
foreach (VisualElementAsset childVea in children)
{
// this will fill the slotInsertionPoints mapping
VisualElement childVe = CloneSetupRecursively(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);
}
internal static VisualElement Create(VisualElementAsset asset, CreationContext ctx)
{
List <IUxmlFactory> factoryList;
if (!VisualElementFactoryRegistry.TryGetValue(asset.fullTypeName, out factoryList))
{
if (asset.fullTypeName.StartsWith("UnityEngine.Experimental.UIElements.") || asset.fullTypeName.StartsWith("UnityEditor.Experimental.UIElements."))
{
string experimentalTypeName = asset.fullTypeName.Replace(".Experimental.UIElements", ".UIElements");
if (!VisualElementFactoryRegistry.TryGetValue(experimentalTypeName, out factoryList))
{
Debug.LogErrorFormat("Element '{0}' has no registered factory method.", asset.fullTypeName);
return(new Label(string.Format("Unknown type: '{0}'", asset.fullTypeName)));
}
}
else
{
Debug.LogErrorFormat("Element '{0}' has no registered factory method.", asset.fullTypeName);
return(new Label(string.Format("Unknown type: '{0}'", asset.fullTypeName)));
}
}
IUxmlFactory factory = null;
foreach (IUxmlFactory f in factoryList)
{
if (f.AcceptsAttributeBag(asset, ctx))
{
factory = f;
break;
}
}
if (factory == null)
{
Debug.LogErrorFormat("Element '{0}' has a no factory that accept the set of XML attributes specified.", asset.fullTypeName);
return(new Label(string.Format("Type with no factory: '{0}'", asset.fullTypeName)));
}
if (factory is UxmlRootElementFactory)
{
return(null);
}
VisualElement res = factory.Create(asset, ctx);
if (res == null)
{
Debug.LogErrorFormat("The factory of Visual Element Type '{0}' has returned a null object", asset.fullTypeName);
return(new Label(string.Format("The factory of Visual Element Type '{0}' has returned a null object", asset.fullTypeName)));
}
if (asset.classes != null)
{
for (int i = 0; i < asset.classes.Length; i++)
{
res.AddToClassList(asset.classes[i]);
}
}
if (asset.stylesheetPaths != null)
{
for (int i = 0; i < asset.stylesheetPaths.Count; i++)
{
res.AddStyleSheetPath(asset.stylesheetPaths[i]);
}
}
if (asset.stylesheets != null)
{
for (int i = 0; i < asset.stylesheets.Count; ++i)
{
res.styleSheets.Add(asset.stylesheets[i]);
}
}
return(res);
}
