protected override void OnPreviewMouseLeftButtonDown(MouseButtonEventArgs e)
{
base.OnPreviewMouseLeftButtonDown(e);
if (this.Context != null)
{
ExpressionSelection expressionSelection = new ExpressionSelection(this.Expression);
this.Context.Items.SetValue(expressionSelection);
}
}
private void DoLostFocus()
{
KillValidator();
ValidateExpression(this);
if (this.Context != null)
{ // Unselect if this is the currently selected one.
ExpressionSelection current = this.Context.Items.GetValue<ExpressionSelection>();
if (current != null && current.ModelItem == this.Expression)
{
ExpressionSelection emptySelection = new ExpressionSelection(null);
this.Context.Items.SetValue(emptySelection);
}
}
// Generate and validate the expression.
// Get the text from the snapshot and set it to the Text property
if (this.expressionEditorInstance != null)
{
this.expressionEditorInstance.ClearSelection();
}
bool committed = false;
if (!this.ExplicitCommit)
{
//commit change and let the commit change code do the revert
committed = Commit(false);
//reset the error icon if we didn't get to set it in the commit
if (!committed || this.IsIndependentExpression)
{
this.EditingState = EditingState.Idle;
// Switch the control back to a textbox -
// but give it the text from the editor (textbox should be bound to the Text property, so should
// automatically be filled with the correct text, from when we set the Text property earlier)
if (!this.ContentTemplate.Equals((DataTemplate)FindResource("textblock")))
{
this.ContentTemplate = (DataTemplate)FindResource("textblock");
}
}
}
//raise EditorLostLogical focus - in case when some clients need to do explicit commit
this.RaiseEvent(new RoutedEventArgs(ExpressionTextBox.EditorLostLogicalFocusEvent, this));
}
