void OnFieldValueChange(ChangeEvent <Object> e, string styleName)
{
var styleProperty = GetStylePropertyByStyleName(styleName);
var isNewValue = styleProperty.values.Length == 0;
var resourcesPath = BuilderAssetUtilities.GetResourcesPathForAsset(e.newValue);
if (!isNewValue)
{
if (styleProperty.values[0].valueType == StyleValueType.ResourcePath && string.IsNullOrEmpty(resourcesPath))
{
styleSheet.RemoveValue(styleProperty, styleProperty.values[0]);
isNewValue = true;
}
else if (styleProperty.values[0].valueType == StyleValueType.AssetReference && !string.IsNullOrEmpty(resourcesPath))
{
styleSheet.RemoveValue(styleProperty, styleProperty.values[0]);
isNewValue = true;
}
}
if (isNewValue)
{
styleSheet.AddValue(styleProperty, e.newValue);
}
else // TODO: Assume only one value.
{
styleSheet.SetValue(styleProperty.values[0], e.newValue);
}
PostStyleFieldSteps(e.target as VisualElement, styleName, isNewValue);
}
public static void SetValue(this StyleSheet styleSheet, StyleValueHandle valueHandle, Object value)
{
// Undo/Redo
Undo.RegisterCompleteObjectUndo(styleSheet, BuilderConstants.ChangeUIStyleValueUndoMessage);
if (valueHandle.valueType == StyleValueType.ResourcePath)
{
var resourcesPath = BuilderAssetUtilities.GetResourcesPathForAsset(value);
styleSheet.strings[valueHandle.valueIndex] = resourcesPath;
}
else
{
styleSheet.assets[valueHandle.valueIndex] = value;
}
}
internal static StyleValueHandle AddValue(this StyleSheet styleSheet, StyleProperty property, Object value)
{
// Undo/Redo
Undo.RegisterCompleteObjectUndo(styleSheet, BuilderConstants.ChangeUIStyleValueUndoMessage);
// Determine real asset type.
var resourcePath = BuilderAssetUtilities.GetResourcesPathForAsset(value);
var styleValueType = string.IsNullOrEmpty(resourcePath) ? StyleValueType.AssetReference : StyleValueType.ResourcePath;
// Add value data to data array.
var index = string.IsNullOrEmpty(resourcePath) ? styleSheet.AddValueToArray(value) : styleSheet.AddValueToArray(resourcePath);
// Add value object to property.
var newValue = styleSheet.AddValueHandle(property, index, styleValueType);
return(newValue);
}
