/// <summary>
/// Converts the property value (in respect to multiple source elements) and returns the converted value.
/// </summary>
/// <returns>Converted property value.</returns>
/// <remarks>
/// Converter: All equal --> use value. One differs --> empty value.
/// </remarks>
public override object GetPropertyValue()
{
Html value = PropertyGridEditorViewModel.GetPropertyValue(this.Elements[0], this.PropertyName) as Html;
if (value == null && this.ViewModelStore != null)
{
IParentModelElement parent = this.ViewModelStore.GetDomainModelServices(this.Elements[0] as ModelElement).ElementParentProvider.GetParentModelElement(this.Elements[0] as ModelElement);
if (parent == null)
{
throw new ArgumentNullException("Parent of element " + this.Elements[0].ToString() + " can not be null");
}
string path = parent.DomainFilePath;
string dirName = new System.IO.FileInfo(path).DirectoryName;
value = new Html("", dirName);
//value = new Html("", this.ViewModelStore.GetDomainModelServices(this.Elements[0] as ModelElement).ElementParentProvider.GetDomainModelDirectory(this.Elements[0] as ModelElement));
}
return(value);
}
/// <summary>
/// Assigns the property value to the property of every source element.
/// </summary>
/// <param name="value">Property value to be assigned.</param>
public override void SetPropertyValue(object value)
{
// empty string values are treated as null...
Html html = value as Html;
if (html != null)
{
if (html.HtmlData.Trim() == string.Empty)
{
html = null;
}
}
using (Transaction transaction = this.Store.TransactionManager.BeginTransaction("Update property value - " + this.PropertyName))
{
PropertyGridEditorViewModel.SetPropertyValues(this.Elements, this.PropertyName, value);
transaction.Commit();
}
// handle errors
if (html != null)
{
if (html.ValidationResult.Count() > 0)
{
// clear current error list
this.EventManager.GetEvent <ErrorListClearItems>().Publish(this);
// add serialization result items
List <BaseErrorListItemViewModel> items = new List <BaseErrorListItemViewModel>();
foreach (IValidationMessage validationmessage in html.ValidationResult)
{
StringErrorListItemViewModel item = new StringErrorListItemViewModel(this.ViewModelStore, validationmessage.MessageId, ModelErrorListItemViewModel.ConvertCategory(validationmessage.Type), validationmessage.Description);
items.Add(item);
}
// notify of change
this.EventManager.GetEvent <ErrorListAddItems>().Publish(items);
}
}
}
/// <summary>
/// Compares two view models by comparing their property display names.
/// </summary>
/// <param name="x">IPropertyGridEditorViewModel to be compared.</param>
/// <param name="y">IPropertyGridEditorViewModel to be compared.</param>
/// <returns>Int from Compare.To</returns>
private static int CompareViewModels(PropertyGridEditorViewModel x, PropertyGridEditorViewModel y)
{
return(x.PropertyDisplayName.CompareTo(y.PropertyDisplayName));
}
/// <summary>
/// Called whenever the selected editor is changed.
/// </summary>
public virtual void SelectedEditorChanged(PropertyGridEditorViewModel selectedEditor)
{
}
