public void StartEditing()
{
IsEditing = true;
StartCaptureMouse();
EditingText = Text;
EditingTextBox.Focus();
EditingTextBox.CaretIndex = EditingTextBox.Text.Length;
}
private void InitBindings()
{
StaticTextBlock.SetBinding(TextBlock.FontSizeProperty, new Binding(nameof(FontSize))
{
Source = this, Mode = BindingMode.OneWay
});
StaticTextBlock.SetBinding(TextBlock.FontFamilyProperty, new Binding(nameof(FontFamily))
{
Source = this, Mode = BindingMode.OneWay
});
StaticTextBlock.SetBinding(TextBlock.TextProperty, new Binding(nameof(Text))
{
Source = this, Mode = BindingMode.OneWay
});
StaticTextBlock.SetBinding(TextBlock.ForegroundProperty, new Binding(nameof(Foreground))
{
Source = this, Mode = BindingMode.OneWay
});
EditingTextBox.SetBinding(TextBox.FontSizeProperty, new Binding(nameof(FontSize))
{
Source = this, Mode = BindingMode.OneWay
});
EditingTextBox.SetBinding(TextBox.FontFamilyProperty, new Binding(nameof(FontFamily))
{
Source = this, Mode = BindingMode.OneWay
});
EditingTextBox.SetBinding(TextBox.TextProperty, new Binding(nameof(EditingText))
{
Source = this, Mode = BindingMode.TwoWay, UpdateSourceTrigger = UpdateSourceTrigger.PropertyChanged
});
EditingTextBox.SetBinding(TextBox.BackgroundProperty, new Binding(nameof(EditingBackground))
{
Source = this, Mode = BindingMode.OneWay
});
EditingTextBox.SetBinding(TextBox.ForegroundProperty, new Binding(nameof(EditingForeground))
{
Source = this, Mode = BindingMode.OneWay
});
EditingTextBox.SetBinding(TextBox.VisibilityProperty, new Binding(nameof(IsEditing))
{
Source = this, Mode = BindingMode.OneWay, Converter = new BoolToVisibilityConverter()
});
EventArea.SetBinding(Border.IsHitTestVisibleProperty, new Binding(nameof(IsEditing))
{
Source = this, Mode = BindingMode.OneWay, Converter = new BoolInvertConverter()
});
}
public override bool Commit(bool isExplicitCommit)
{
bool committed = false;
//only generate and validate the expression when when we don't require explicit commit change
//or when the commit is explicit
if (!ExplicitCommit || isExplicitCommit)
{
// Generate and validate the expression.
// Get the text from the snapshot and set it to the Text property
PreviousText = null;
if (ExpressionEditorInstance != null)
{
PreviousText = Text;
Text = ExpressionEditorInstance.GetCommittedText();
}
if (Expression != null)
{
Activity expression = Expression.GetCurrentValue() as Activity;
// if expression is null, GetExpressionString will return null
PreviousText = ExpressionHelper.GetExpressionString(expression, OwnerActivity);
}
else
{
PreviousText = null;
}
if (EditingTextBox != null)
{
EditingTextBox.GetBindingExpression(TextBox.TextProperty).UpdateSource();
}
// If the Text is null, or equal to the previous value, or changed from null to empty, don't bother generating the expression
// We still need to generate the expression when it is changed from other value to EMPTY however - otherwise
// the case where you had an expression (valid or invalid), then deleted the whole thing will not be evaluated.
if (ShouldGenerateExpression(PreviousText, Text))
{
GenerateExpression();
committed = true;
}
}
if (!ContentTemplate.Equals((DataTemplate)FindResource("textblock")))
{
ContentTemplate = (DataTemplate)FindResource("textblock");
}
return(committed);
}
