void Attach()
{
_contentTemplateProperty.Attach(OnContentTemplateChanged);
_contentProperty.Attach(OnContentChanged);
TemplateControlProperty.Attach(OnTemplateControlChanged);
IsExpandedProperty.Attach(OnExpandedChanged);
}
public static WindowExpander()
{
DefaultStyleKeyProperty.OverrideMetadata(typeof(WindowExpander), new FrameworkPropertyMetadata(typeof(WindowExpander)));
IsExpandedProperty.OverrideMetadata(typeof(WindowExpander), new FrameworkPropertyMetadata
{
PropertyChangedCallback = (obj, e) =>
{
var expander = (WindowExpander)obj;
if (expander.Window != null)
{
expander.SwapContent(expander.Window);
expander.AnimateWindow();
}
}
});
}
public static WindowExpander()
{
DefaultStyleKeyProperty.OverrideMetadata(typeof(WindowExpander), new PropertyMetadata(typeof(WindowExpander)));
ContentProperty.OverrideMetadata(typeof(WindowExpander), new FrameworkPropertyMetadata
{
PropertyChangedCallback = (obj, e) =>
{
var expander = (WindowExpander)obj;
var oldWindow = (Window)e.OldValue;
var newWindow = (Window)e.NewValue;
if (oldWindow != null)
{
if (!expander.IsExpanded)
{
expander.SwapContent(oldWindow);
}
oldWindow.StateChanged -= OnStateChanged;
}
expander.ConstructLiveThumbnail();
if (newWindow != null)
{
if (!expander.IsExpanded)
{
expander.SwapContent(newWindow);
}
newWindow.StateChanged -= OnStateChanged;
}
}
});
IsExpandedProperty.OverrideMetadata(typeof(WindowExpander), new FrameworkPropertyMetadata
{
PropertyChangedCallback = (obj, e) =>
{
var expander = (WindowExpander)obj;
var window = (Window)expander.Content;
if (window != null)
{
expander.SwapContent(window);
expander.AnimateWindow(window);
}
}
});
}
/// <summary>
/// Get the dependency property tests.
/// </summary>
/// <returns>The dependency property tests.</returns>
public override IEnumerable <DependencyPropertyTestMethod> GetDependencyPropertyTests()
{
IList <DependencyPropertyTestMethod> tests = TagInherited(base.GetDependencyPropertyTests());
tests.Add(IsEnabledProperty.ChangesVisualStateTest(false, true, "Normal"));
tests.Add(IsEnabledProperty.ChangesVisualStateTest(true, false, "Disabled"));
tests.Add(IsEnabledProperty.DoesNotChangeVisualStateTest(true, true));
tests.Add(IsEnabledProperty.DoesNotChangeVisualStateTest(false, false));
// IsExpandedProperty tests
tests.Add(IsExpandedProperty.CheckDefaultValueTest);
tests.Add(IsExpandedProperty.ChangeClrSetterTest);
tests.Add(IsExpandedProperty.ChangeSetValueTest);
tests.Add(IsExpandedProperty.ClearValueResetsDefaultTest);
tests.Add(IsExpandedProperty.CanBeStyledTest);
DependencyPropertyTestMethod focusTest = IsExpandedProperty.TemplateBindTest;
focusTest.Tags.Add(new TagAttribute(Tags.RequiresFocus));
tests.Add(focusTest);
tests.Add(IsExpandedProperty.ChangesVisualStateTest(false, true, "Expanded"));
tests.Add(IsExpandedProperty.ChangesVisualStateTest(true, false, "Collapsed"));
tests.Add(IsExpandedProperty.SetXamlAttributeTest);
tests.Add(IsExpandedProperty.SetXamlElementTest.Bug("TODO: XAML Parser?"));
// ExpandDirectionProperty tests
tests.Add(ExpandDirectionProperty.CheckDefaultValueTest);
tests.Add(ExpandDirectionProperty.ChangeClrSetterTest);
tests.Add(ExpandDirectionProperty.ChangeSetValueTest);
tests.Add(ExpandDirectionProperty.ClearValueResetsDefaultTest);
tests.Add(ExpandDirectionProperty.InvalidValueFailsTest);
tests.Add(ExpandDirectionProperty.InvalidValueIsIgnoredTest);
tests.Add(ExpandDirectionProperty.CanBeStyledTest);
tests.Add(ExpandDirectionProperty.TemplateBindTest);
tests.Add(ExpandDirectionProperty.ChangesVisualStateTest(ExpandDirection.Down, ExpandDirection.Up, "ExpandUp"));
tests.Add(ExpandDirectionProperty.ChangesVisualStateTest(ExpandDirection.Up, ExpandDirection.Left, "ExpandLeft"));
tests.Add(ExpandDirectionProperty.ChangesVisualStateTest(ExpandDirection.Left, ExpandDirection.Right, "ExpandRight"));
tests.Add(ExpandDirectionProperty.ChangesVisualStateTest(ExpandDirection.Right, ExpandDirection.Down, "ExpandDown"));
tests.Add(ExpandDirectionProperty.SetXamlAttributeTest);
tests.Add(ExpandDirectionProperty.SetXamlElementTest);
return(tests);
}
static TreeViewItem()
{
IsExpandedProperty.Override(typeof(TreeViewItem),
coerce: (d, baseValue, original) =>
{
var owner = (TreeViewItem)d;
if (owner.LockedExpandState.HasValue)
{
return(owner.LockedExpandState);
}
if (owner._freezeExpandChange)
{
return(owner.IsExpanded);
}
return(original?.Invoke(d, baseValue) ?? baseValue);
});
DefaultStyleKeyProperty.OverrideMetadata(typeof(TreeViewItem), new FrameworkPropertyMetadata(typeof(TreeViewItem)));
ResourceHelper.SetDefaultStyle(typeof(TreeViewItem), Resource.ControlStyle);
}
set => SetValue(IsExpandedProperty, value);
set => this.SetValue(IsExpandedProperty, value);
static DefaultExpandedExpander()
{
IsExpandedProperty.OverrideMetadata(typeof(DefaultExpandedExpander), new FrameworkPropertyMetadata(true));
}
