public void TestDifferentElements()
{
Button parentButton = new Button();
StackPanel parentStackPanel = new StackPanel();
StackPanel childStackPanel = new StackPanel();
parentStackPanel.Children.Add(childStackPanel);
childStackPanel.Children.Add(parentButton);
SetResourceDictionaryUri(parentButton, innerUri);
ImplicitStyleManager.SetApplyMode(childStackPanel, ImplicitStylesApplyMode.OneTime);
Button childButton = new Button();
bool hasLayoutUpdatedEventFired = false;
parentStackPanel.LayoutUpdated += (source, args) => hasLayoutUpdatedEventFired = true;
TestAsync(
parentStackPanel,
() => { EnqueueConditional(() => hasLayoutUpdatedEventFired); hasLayoutUpdatedEventFired = false; },
() => Assert.AreEqual(Colors.Blue, ((SolidColorBrush)parentButton.Foreground).Color),
() => parentButton.Content = childButton,
() => { EnqueueConditional(() => hasLayoutUpdatedEventFired); hasLayoutUpdatedEventFired = false; },
() => Assert.AreEqual(Colors.Black, ((SolidColorBrush)childButton.Foreground).Color),
() => ImplicitStyleManager.Apply(parentStackPanel),
() => Assert.AreEqual(Colors.Blue, ((SolidColorBrush)childButton.Foreground).Color));
}
/// <summary>
/// Helper method that verifies the expected behavior for ApplyMode=Auto.
/// In this method's scenario, a StackPanel contains two Buttons: one added right away
/// and another one added later.
/// </summary>
/// <param name="action">Action that sets the source of the styles (element's resources or ResourceDictionaryUri) and the ApplyMode.</param>
/// <param name="color">Expected color for both Buttons after calling the Apply method.</param>
private void TestAuto(Action <Panel> action, Color color)
{
Panel stackPanel = new StackPanel();
Button firstButton = new Button();
Button secondButton = new Button();
stackPanel.Children.Add(firstButton);
action(stackPanel);
bool hasLayoutUpdatedEventBeenRaised = false;
stackPanel.LayoutUpdated += (source, args) => hasLayoutUpdatedEventBeenRaised = true;
TestAsync(
stackPanel,
() => { EnqueueConditional(() => hasLayoutUpdatedEventBeenRaised); hasLayoutUpdatedEventBeenRaised = false; },
() => Assert.IsNotNull(firstButton.Style, "firstButton should contain a Style (before the Apply method is called)."),
() => stackPanel.Children.Add(secondButton),
() => { EnqueueConditional(() => hasLayoutUpdatedEventBeenRaised); hasLayoutUpdatedEventBeenRaised = false; },
() => Assert.IsNotNull(secondButton.Style, "secondButton should contain a Style (before the Apply method is called)."),
() => ImplicitStyleManager.Apply(stackPanel),
() => Assert.IsNotNull(firstButton.Style, "firstButton should contain a Style (after the Apply method is called)."),
() => Assert.IsNotNull(secondButton.Style, "secondButton should contain a Style (after the Apply method is called)."),
() => Assert.AreEqual(color, ((SolidColorBrush)firstButton.Foreground).Color, String.Format(CultureInfo.CurrentCulture, "firstButton should have color {0}", color)),
() => Assert.AreEqual(color, ((SolidColorBrush)secondButton.Foreground).Color, String.Format(CultureInfo.CurrentCulture, "secondButton should have color {0}", color)));
}
/// <summary>
/// Applies the style.
/// </summary>
/// <param name="uri">The URI of the theme used.</param>
internal void ApplyStyle(Uri uri)
{
ImplicitStyleManager.SetResourceDictionaryUri(this, uri);
ImplicitStyleManager.SetApplyMode(this, ImplicitStylesApplyMode.OneTime);
ImplicitStyleManager.Apply(this);
// explicitly set content of expander.
ImplicitStyleManager.SetApplyMode(expander.Content as FrameworkElement, ImplicitStylesApplyMode.OneTime);
ImplicitStyleManager.Apply(expander.Content as FrameworkElement);
}
/// <summary>
/// Initialize ImplicitStyleManager once the visual tree is ready.
/// </summary>
/// <param name="sender">The UserControl.</param>
/// <param name="e">Event arguments.</param>
private void OnLayoutUpdated(object sender, EventArgs e)
{
// Only apply once
LayoutUpdated -= OnLayoutUpdated;
// ImplicitStyleManager is design to only style controls in the
// namescope it was defined in. Since user controls create new
// namescopes, the ImplicitStyleManager acting on the Theme controls
// will not style the controls in the AllControls user control. By
// applying ImplicitStyleManager to the root of the user control
// (without giving it a theme to use), it will walk up the visual
// tree to the Theme control and use its styles.
ImplicitStyleManager.SetApplyMode(Root, ImplicitStylesApplyMode.OneTime);
ImplicitStyleManager.Apply(Root);
}
public void TestAutoOneTimeNestedModes()
{
SubtreeDifferentMode userControl = new SubtreeDifferentMode();
Button thirdButton = new Button {
Content = "Third button"
};
TestAsync(
userControl,
() => Assert.AreEqual(Colors.Red, ((SolidColorBrush)userControl.firstButton.Background).Color),
() => Assert.AreEqual(Colors.Red, ((SolidColorBrush)userControl.secondButton.Background).Color),
() => userControl.secondButton.Content = thirdButton,
() => Assert.IsNull(thirdButton.Style),
() => ImplicitStyleManager.Apply(userControl.secondButton),
() => Assert.AreEqual(Colors.Red, ((SolidColorBrush)userControl.firstButton.Background).Color),
() => Assert.AreEqual(Colors.Red, ((SolidColorBrush)userControl.secondButton.Background).Color),
() => Assert.AreEqual(Colors.Red, ((SolidColorBrush)thirdButton.Background).Color),
() => Assert.IsNotNull(thirdButton.Style));
}
/// <summary>
/// Helper method that verifies the expected behavior for ApplyMode=None.
/// In this method's scenario, a StackPanel contains two Buttons: one added right away
/// and another one added later.
/// </summary>
/// <param name="action">Action that sets the source of the styles (element's resources or ResourceDictionaryUri) and the ApplyMode.</param>
/// <param name="color">The color to use for the styles.</param>
private void TestNone(Action <Panel> action, Color color)
{
Panel stackPanel = new StackPanel();
Button firstButton = new Button();
Button secondButton = new Button();
stackPanel.Children.Add(firstButton);
action(stackPanel);
TestAsync(
stackPanel,
() => Assert.IsNull(firstButton.Style, "firstButton should *not* contain a Style (before the Apply method is called)."),
() => stackPanel.Children.Add(secondButton),
() => Assert.IsNull(secondButton.Style, "secondButton should *not* contain a Style (before the Apply method is called)."),
() => ImplicitStyleManager.Apply(stackPanel),
() => Assert.IsNotNull(firstButton.Style, "firstButton should contain a Style (after the Apply method is called)."),
() => Assert.IsNotNull(secondButton.Style, "secondButton should contain a Style (after the Apply method is called)."),
() => Assert.AreEqual(color, ((SolidColorBrush)firstButton.Foreground).Color, String.Format(CultureInfo.CurrentCulture, "firstButton should have color {0}", color)),
() => Assert.AreEqual(color, ((SolidColorBrush)secondButton.Foreground).Color, String.Format(CultureInfo.CurrentCulture, "secondButton should have color {0}", color)));
}
private void ApplyStylesManuallyButton_Click(object sender, System.Windows.RoutedEventArgs e)
{
ImplicitStyleManager.Apply(manualContainer);
}
public void TestApplyWithNullFrameworkElementParameter()
{
ImplicitStyleManager.Apply(null as FrameworkElement);
}
