private void OnEditorLoaded(object sender, RoutedEventArgs e)
{
if (!IsEditorLoaded)
{
// If the service exists, create an expression editor and add it to the grid - else switch to the textbox data template
if (ExpressionEditorService1 != null)
{
Border border = (Border)sender;
// Get the references and variables in scope
AssemblyContextControlItem assemblies = (AssemblyContextControlItem)Context.Items.GetValue(typeof(AssemblyContextControlItem));
List <ModelItem> declaredVariables = CSharpExpressionHelper.GetVariablesInScope(OwnerActivity);
ImportedNamespaceContextItem importedNamespaces = Context.Items.GetValue <ImportedNamespaceContextItem>();
importedNamespaces.EnsureInitialized(Context);
//if the expression text is empty and the expression type is set, then we initialize the text to prompt text
if (string.Equals(Text, string.Empty, StringComparison.OrdinalIgnoreCase) && ExpressionType != null)
{
Text = TypeToPromptTextConverter.GetPromptText(ExpressionType);
}
//this is a hack
BlockWidth = Math.Max(ActualWidth - 8, 0); //8 is the margin
if (HasErrors)
{
BlockWidth = Math.Max(BlockWidth - 16, 0); //give 16 for error icon
}
try
{
if (ExpressionType != null)
{
ExpressionEditorInstance = ExpressionEditorService1.CreateExpressionEditor(assemblies, importedNamespaces, declaredVariables, Text, ExpressionType, new Size(BlockWidth, BlockHeight));
}
else
{
ExpressionEditorInstance = ExpressionEditorService1.CreateExpressionEditor(assemblies, importedNamespaces, declaredVariables, Text, new Size(BlockWidth, BlockHeight));
}
}
catch (Exception ex)
{
throw ex;
}
if (ExpressionEditorInstance != null)
{
try
{
ExpressionEditorInstance.VerticalScrollBarVisibility = VerticalScrollBarVisibility;
ExpressionEditorInstance.HorizontalScrollBarVisibility = HorizontalScrollBarVisibility;
ExpressionEditorInstance.AcceptsReturn = AcceptsReturn;
ExpressionEditorInstance.AcceptsTab = AcceptsTab;
// Add the expression editor to the text panel, at column 1
HostControl = ExpressionEditorInstance.HostControl;
// Subscribe to this event to change scrollbar visibility on the fly for auto, and to resize the hostable editor
// as necessary
ExpressionEditorInstance.LostAggregateFocus += new EventHandler(OnEditorLostAggregateFocus);
ExpressionEditorInstance.Closing += new EventHandler(OnEditorClosing);
// Set up Hostable Editor properties
ExpressionEditorInstance.MinLines = MinLines;
ExpressionEditorInstance.MaxLines = MaxLines;
ExpressionEditorInstance.HostControl.Style = (Style)FindResource("editorStyle");
border.Child = HostControl;
ExpressionEditorInstance.Focus();
}
catch (KeyNotFoundException ex)
{
new ApplicationException("Unable to find editor with the following editor name: " + EditorName);
}
}
}
IsEditorLoaded = true;
}
}
public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
{
return(TypeToPromptTextConverter.GetPromptText(value));
}
