private void SetWatermark(DatePicker dp)
{
if (dp == null)
{
return;
}
// force visual tree to be built, even if control is not visible
dp.ApplyTemplate();
var tb = dp.GetChildOfType <DatePickerTextBox>();
if (tb == null)
{
return;
}
// force visual tree to be built, even if control is not visible
tb.ApplyTemplate();
var wm = tb.Template.FindName("PART_Watermark", tb) as ContentControl;
if (wm == null)
{
return;
}
wm.Content = Localization.Properties.Resources.Main_SelectADate;
}
public void SelectedDate_null_Should_Use_Placeholders()
{
using (UnitTestApplication.Start(Services))
{
DatePicker datePicker = new DatePicker
{
Template = CreateTemplate(),
YearVisible = false
};
datePicker.ApplyTemplate();
Threading.Dispatcher.UIThread.RunJobs();
var desc = datePicker.GetVisualDescendants();
Assert.True(desc.Count() > 1);//Should be layoutroot grid & button
TextBlock yearText = null;
TextBlock monthText = null;
TextBlock dayText = null;
Grid container = null;
Assert.True(desc.ElementAt(1) is Button);
container = (desc.ElementAt(1) as Button).Content as Grid;
Assert.True(container != null);
for (int i = 0; i < container.Children.Count; i++)
{
if (container.Children[i] is TextBlock tb && tb.Name == "YearText")
{
yearText = tb;
}
private DatePicker CreateControl()
{
var datePicker =
new DatePicker
{
Template = CreateTemplate()
};
datePicker.ApplyTemplate();
return(datePicker);
}
private static void SetWatermarkInternal(DatePicker d, object value)
{
d.ApplyTemplate();
var textBox = d.Template.FindName("PART_TextBox", d) as Control;
if (textBox != null)
{
textBox.ApplyTemplate();
var watermarkControl = textBox.Template.FindName("PART_Watermark", textBox) as ContentControl;
if (watermarkControl != null)
{
watermarkControl.Content = value;
}
}
}
private static void SetTextBoxBinding(DatePicker datePicker)
{
datePicker.ApplyTemplate();
var textBox = GetTemplateTextBox(datePicker);
var customTextBox = GetCustomTextBox(textBox);
/* When DatePicker gets focus it passes focus on to its DatePickerTextBox. Since it has been
* replaced DatePicker is keeping focus. A workaround is to make it unfocusable. */
datePicker.Focusable = false;
var binding = new Binding("SelectedDate")
{
RelativeSource = new RelativeSource {
AncestorType = typeof(DatePicker)
},
Converter = new DateTimeConverter(),
ConverterParameter = new Tuple <DatePicker, string>(datePicker, GetDateFormat(datePicker))
};
customTextBox.SetBinding(TextBox.TextProperty, binding);
customTextBox.KeyUp -= CustomTextBoxOnKeyUp;
customTextBox.KeyUp += CustomTextBoxOnKeyUp;
}
public void MonthVisible_False_Should_Hide_Month()
{
using (UnitTestApplication.Start(Services))
{
DatePicker datePicker = new DatePicker
{
Template = CreateTemplate(),
MonthVisible = false
};
datePicker.ApplyTemplate();
Threading.Dispatcher.UIThread.RunJobs();
var desc = datePicker.GetVisualDescendants();
Assert.True(desc.Count() > 1);//Should be layoutroot grid & button
TextBlock monthText = null;
Grid container = null;
Assert.True(desc.ElementAt(1) is Button);
container = (desc.ElementAt(1) as Button).Content as Grid;
Assert.True(container != null);
for (int i = 0; i < container.Children.Count; i++)
{
if (container.Children[i] is TextBlock tb && tb.Name == "MonthText")
{
monthText = tb;
break;
}
}
Assert.True(monthText != null);
Assert.True(!monthText.IsVisible);
Assert.True(container.ColumnDefinitions.Count == 3);
}
}
