public WatermarkAdorner(UIElement adornedElement) : base(adornedElement)
{
if (adornedElement is TextBox)
{
adornedTextBox = adornedElement as TextBox;
adornedTextBox.TextChanged += (s1, e1) =>
{
this.SetWatermarkVisible(true);
};
adornedTextBox.GotFocus += (s1, e1) => {
this.SetWatermarkVisible(true);
};
adornedTextBox.LostFocus += (s1, e1) =>
{
this.SetWatermarkVisible(false);
};
_visuals = new VisualCollection(this);
textBlock = new TextBlock()
{
HorizontalAlignment = System.Windows.HorizontalAlignment.Left,
VerticalAlignment = System.Windows.VerticalAlignment.Center,
Text = WatermarkAdorner.GetWatermark(adornedElement),
Foreground = new SolidColorBrush(Color.FromRgb(153, 153, 153)),
Margin = new Thickness(5, 0, 2, 0),
};
_visuals.Add(textBlock);
this.showModel = WatermarkAdorner.GetWatermarkShowMode(adornedElement);
}
this.IsHitTestVisible = false;
}
public WatermarkAdorner(UIElement adornedElement) : base(adornedElement)
{
if (adornedElement is TextBox)
{
adornedTextBox = adornedElement as TextBox;
adornedTextBox.TextChanged += (s1, e1) =>
{
this.SetWatermarkVisible(true);
};
adornedTextBox.GotFocus += (s1, e1) =>
{
this.SetWatermarkVisible(true);
};
adornedTextBox.LostFocus += (s1, e1) =>
{
this.SetWatermarkVisible(false);
};
adornedTextBox.IsVisibleChanged += (o, e) =>
{
if (string.IsNullOrEmpty(this.adornedTextBox.Text))
{
this.textBlock.Visibility = (bool)e.NewValue ? Visibility.Visible : Visibility.Collapsed;
}
else
{
this.textBlock.Visibility = Visibility.Collapsed;
}
};
_visuals = new VisualCollection(this);
textBlock = new TextBlock()
{
HorizontalAlignment = adornedTextBox.HorizontalContentAlignment,
VerticalAlignment = adornedTextBox.VerticalContentAlignment,
Text = WatermarkAdorner.GetWatermark(adornedElement),
Foreground = new SolidColorBrush(Color.FromRgb(153, 153, 153)),
Margin = new Thickness(5, 0, 2, 0),
};
_visuals.Add(textBlock);
this.showModel = WatermarkAdorner.GetWatermarkShowMode(adornedElement);
}
this.IsHitTestVisible = false;
}
public static void SetWatermarkShowMode(DependencyObject obj, EnumWatermarkShowMode value)
{
obj.SetValue(WatermarkShowModeProperty, value);
}
