private bool IsPropertySetLocally(object editor, DependencyProperty dp)
{
if (dp == null)
{
return(false);
}
var editorObject = editor as DependencyObject;
if (editorObject == null)
{
return(false);
}
var valueSource = DependencyPropertyHelper.GetValueSource(editorObject, dp);
if (valueSource == null)
{
return(false);
}
return(valueSource.BaseValueSource == BaseValueSource.Local);
}
protected override void PrepareContainerForItemOverride(DependencyObject element, object item)
{
base.PrepareContainerForItemOverride(element, item);
if (element is RibbonGallery)
{
HasGallery = (++_galleryCount > 0);
}
else
{
RibbonSeparator separator = element as RibbonSeparator;
if (separator != null)
{
ValueSource vs = DependencyPropertyHelper.GetValueSource(separator, StyleProperty);
if (vs.BaseValueSource <= BaseValueSource.ImplicitStyleReference)
{
separator.SetResourceReference(StyleProperty, MenuItem.SeparatorStyleKey);
}
separator.DefaultStyleKeyInternal = MenuItem.SeparatorStyleKey;
}
}
}
static void UpdateStyles <TargetColumnClassT>(DataGrid grid, DependencyProperty sourceProperty, DependencyProperty targetProperty) where TargetColumnClassT : DataGridColumn
{
var style = grid.GetValue(sourceProperty) as Style;
foreach (TargetColumnClassT column in grid.Columns.OfType <TargetColumnClassT>())
{
var source = DependencyPropertyHelper.GetValueSource(column, targetProperty);
if (source.BaseValueSource == BaseValueSource.Default)
{
if (style != null)
{
// override current value
column.SetCurrentValue(targetProperty, style);
}
else
{
// restore original value
var original = column.GetValue(targetProperty);
column.SetCurrentValue(targetProperty, original);
}
}
}
}
protected override Size ArrangeOverride(Size finalSize)
{
// Position children.
foreach (UIElement child in Children)
{
// Add translate transform.
var translate = child.RenderTransform as TranslateTransform;
if (translate == null)
{
translate = new TranslateTransform();
child.RenderTransform = translate;
}
// Get positioning information.
ValueSource xSource = DependencyPropertyHelper.GetValueSource(child, XProperty);
object x = xSource.BaseValueSource == BaseValueSource.Default ? null : child.GetValue(XProperty);
ValueSource ySource = DependencyPropertyHelper.GetValueSource(child, YProperty);
object y = ySource.BaseValueSource == BaseValueSource.Default ? null : child.GetValue(YProperty);
AxisAlignment alignmentX = (AxisAlignment)child.GetValue(AlignmentXProperty);
AxisAlignment alignmentY = (AxisAlignment)child.GetValue(AlignmentYProperty);
// Position.
if (x != null)
{
translate.X = PositionInInterval(VisibleIntervalX, finalSize.Width, child.DesiredSize.Width, (TX)x, alignmentX);
}
if (y != null)
{
translate.Y = PositionInInterval(VisibleIntervalY, finalSize.Height, child.DesiredSize.Height, (TY)y, alignmentY);
}
// Arrange.
child.Arrange(new Rect(new Point(0, 0), child.DesiredSize));
}
return(finalSize);
}
protected override Size MeasureOverride(Size availableSize)
{
// This panel needs a requested size in order for its children to be able to be positioned.
if (double.IsInfinity(availableSize.Width) || double.IsInfinity(availableSize.Height))
{
return(Size.Empty);
}
// Allow children to take up as much room as they want.
foreach (UIElement child in Children)
{
// Verify desired width and height, and set when needed.
FrameworkElement element = child as FrameworkElement;
if (element != null)
{
// Resize in case size is specified.
ValueSource sizeXSource = DependencyPropertyHelper.GetValueSource(child, SizeXProperty);
object sizeX = sizeXSource.BaseValueSource == BaseValueSource.Default ? null : child.GetValue(SizeXProperty);
ValueSource sizeYSource = DependencyPropertyHelper.GetValueSource(child, SizeYProperty);
object sizeY = sizeYSource.BaseValueSource == BaseValueSource.Default ? null : child.GetValue(SizeYProperty);
if (sizeX != null)
{
element.Width = IntervalSize(VisibleIntervalX, (TXSize)sizeX, availableSize.Width);
}
if (sizeY != null)
{
element.Height = IntervalSize(VisibleIntervalY, (TYSize)sizeY, availableSize.Height);
}
}
// Child elements are given as much space as they want.
child.Measure(new Size(double.PositiveInfinity, double.PositiveInfinity));
}
// The idea behind this panel is to display the specified plane area in the available size.
return(availableSize);
}
protected override void PrepareContainerForItemOverride(DependencyObject element, object item)
{
base.PrepareContainerForItemOverride(element, item);
if (ItemContainerStyleSelector != null && element is FrameworkElement container)
{
var style = ItemContainerStyleSelector.SelectStyle(item, element);
if (style != null)
{
container.Style = style;
}
if (container is ItemsControl itemsControl)
{
itemsControl.SetValueIfDefault(ItemContainerStyleSelectorProperty, ItemContainerStyleSelector);
}
}
if (ItemContainerTemplateSelector != null && element is MenuItem menuItem)
{
menuItem.SetValueIfDefault(ItemContainerTemplateSelectorProperty, ItemContainerTemplateSelector);
menuItem.SetValueIfDefault(UsesItemContainerTemplateProperty, UsesItemContainerTemplate);
}
var itemsCommandParameterPropertySource = DependencyPropertyHelper.GetValueSource(this, ItemsCommandParameterProperty);
if (itemsCommandParameterPropertySource.BaseValueSource > BaseValueSource.Default)
{
element.SetBindingIfDefault(MenuItem.CommandParameterProperty,
new Binding
{
Source = this,
Path = new PropertyPath(ItemsCommandParameterProperty)
});
}
}
public static bool HasDefaultValue(this DependencyObject d, DependencyProperty dp)
{
return(DependencyPropertyHelper.GetValueSource(d, dp).BaseValueSource == BaseValueSource.Default);
}
internal void UpdateAdvanceOptionsForItem(MarkupObject markupObject, DependencyObject dependencyObject, DependencyPropertyDescriptor dpDescriptor,
out object tooltip)
{
tooltip = StringConstants.AdvancedProperties;
bool isResource = false;
bool isDynamicResource = false;
var markupProperty = markupObject.Properties.Where(p => p.Name == PropertyName).FirstOrDefault();
if ((markupProperty != null) &&
(markupProperty.PropertyType != typeof(object)) &&
!markupProperty.PropertyType.IsEnum &&
!markupProperty.PropertyType.IsArray)
{
//TODO: need to find a better way to determine if a StaticResource has been applied to any property not just a style
isResource = (markupProperty.Value is Style);
isDynamicResource = (markupProperty.Value is DynamicResourceExtension);
}
if (isResource || isDynamicResource)
{
tooltip = StringConstants.Resource;
}
else
{
if ((dependencyObject != null) && (dpDescriptor != null))
{
if (BindingOperations.GetBindingExpressionBase(dependencyObject, dpDescriptor.DependencyProperty) != null)
{
tooltip = StringConstants.Databinding;
}
else
{
BaseValueSource bvs =
DependencyPropertyHelper
.GetValueSource(dependencyObject, dpDescriptor.DependencyProperty)
.BaseValueSource;
switch (bvs)
{
case BaseValueSource.Inherited:
case BaseValueSource.DefaultStyle:
case BaseValueSource.ImplicitStyleReference:
tooltip = StringConstants.Inheritance;
break;
case BaseValueSource.DefaultStyleTrigger:
break;
case BaseValueSource.Style:
tooltip = StringConstants.StyleSetter;
break;
case BaseValueSource.Local:
tooltip = StringConstants.Local;
break;
}
}
}
}
}
protected override async void OnPropertyChanged(DependencyPropertyChangedEventArgs e)
{
base.OnPropertyChanged(e);
if (_isLoaded || this.AssociatedObject == null)
{
return;
}
// we use the property changed thing because the bindings to the attached behaviors are not resolved until after
// the events (loaded/initialized) have passed.. and this is also the reason we have removed initialized command thing
if (e.Property == LoadedCommandProperty && this.LoadedCommand != null)
{
if (this.LoadedCommandParameter != null || !DependencyPropertyHelper.GetValueSource(this, LoadedCommandParameterProperty).IsExpression)
{
_isLoaded = true;
if (this.LoadedCommand.CanExecute(this.LoadedCommandParameter))
{
this.LoadedCommand.Execute(this.LoadedCommandParameter);
}
if (this.AssociatedObject != null)
{
var _viewSupporter = this.AssociatedObject.DataContext as ISupportView;
if (_viewSupporter != null)
{
_viewSupporter.Loaded();
await _viewSupporter.LoadedAsync();
}
}
}
}
else if (e.Property == LoadedCommandParameterProperty && this.LoadedCommandParameter != null)
{
if (this.LoadedCommand != null)
{
_isLoaded = true;
if (this.LoadedCommand.CanExecute(this.LoadedCommandParameter))
{
this.LoadedCommand.Execute(this.LoadedCommandParameter);
}
if (this.AssociatedObject != null)
{
var _viewSupporter = this.AssociatedObject.DataContext as ISupportView;
if (_viewSupporter != null)
{
_viewSupporter.Loaded();
await _viewSupporter.LoadedAsync();
}
}
}
}
else if (this.LoadedCommand == null && !DependencyPropertyHelper.GetValueSource(this, LoadedCommandProperty).IsExpression)
{
_isLoaded = true;
if (this.AssociatedObject != null)
{
var _viewSupporter = this.AssociatedObject.DataContext as ISupportView;
if (_viewSupporter != null)
{
_viewSupporter.Loaded();
await _viewSupporter.LoadedAsync();
}
}
}
//if (e.Property == InitializedCommandProperty && this.InitializedCommand != null)
//{
// if (this.InitializedCommand != null || !DependencyPropertyHelper.GetValueSource(this, InitializedCommandParameterProperty).IsExpression)
// {
// if (this.InitializedCommand.CanExecute(this.InitializedCommandParameter))
// this.InitializedCommand.Execute(this.InitializedCommandParameter);
// }
//}
//else if (e.Property == InitializedCommandParameterProperty && this.InitializedCommandParameter != null)
//{
// if (this.InitializedCommand != null)
// {
// if (this.InitializedCommand.CanExecute(this.InitializedCommandParameter))
// this.InitializedCommand.Execute(this.InitializedCommandParameter);
// }
//}
}
private void Update()
{
if (this.ignoreUpdate)
{
return;
}
this.isLocallySet = false;
this.isInvalidBinding = false;
this.isDatabound = false;
var dp = this.DependencyProperty;
var d = this.Target as DependencyObject;
if (SnoopModes.MultipleDispatcherMode &&
d != null &&
d.Dispatcher != this.Dispatcher)
{
return;
}
if (dp != null &&
d != null)
{
//Debugger.Launch();
if (d.ReadLocalValue(dp) != DependencyProperty.UnsetValue)
{
this.isLocallySet = true;
}
var expression = BindingOperations.GetBindingExpressionBase(d, dp);
if (expression != null)
{
this.isDatabound = true;
if (expression.HasError ||
(expression.Status != BindingStatus.Active && !(expression is PriorityBindingExpression)))
{
this.isInvalidBinding = true;
var builder = new StringBuilder();
var writer = new StringWriter(builder);
var tracer = new TextWriterTraceListener(writer);
PresentationTraceSources.DataBindingSource.Listeners.Add(tracer);
// reset binding to get the error message.
this.ignoreUpdate = true;
d.ClearValue(dp);
BindingOperations.SetBinding(d, dp, expression.ParentBindingBase);
this.ignoreUpdate = false;
// this needs to happen on idle so that we can actually run the binding, which may occur asynchronously.
this.RunInDispatcherAsync(
() =>
{
this.bindingError = builder.ToString();
this.OnPropertyChanged(nameof(this.BindingError));
PresentationTraceSources.DataBindingSource.Listeners.Remove(tracer);
writer.Close();
}, DispatcherPriority.ApplicationIdle);
}
else
{
this.bindingError = string.Empty;
}
}
this.valueSource = DependencyPropertyHelper.GetValueSource(d, dp);
}
this.OnPropertyChanged(nameof(this.IsLocallySet));
this.OnPropertyChanged(nameof(this.IsInvalidBinding));
this.OnPropertyChanged(nameof(this.StringValue));
this.OnPropertyChanged(nameof(this.ResourceKey));
this.OnPropertyChanged(nameof(this.DescriptiveValue));
this.OnPropertyChanged(nameof(this.IsDatabound));
this.OnPropertyChanged(nameof(this.IsExpression));
this.OnPropertyChanged(nameof(this.IsAnimated));
this.OnPropertyChanged(nameof(this.ValueSource));
}
/// <summary>
/// Computes the text alignment of the adorned element.
/// </summary>
/// <returns>
/// Returns the computed text alignment.
/// </returns>
private TextAlignment ComputedTextAlignment()
{
var adornedElement = AdornedElement as Control;
var textBox = adornedElement as TextBox;
if (textBox != null)
{
if (DependencyPropertyHelper.GetValueSource(textBox, TextBox.HorizontalContentAlignmentProperty)
.BaseValueSource != BaseValueSource.Local || DependencyPropertyHelper.GetValueSource(textBox, TextBox.TextAlignmentProperty)
.BaseValueSource == BaseValueSource.Local)
{
// TextAlignment dominates
return(textBox.TextAlignment);
}
}
var richTextBox = adornedElement as RichTextBox;
if (richTextBox != null)
{
var blocks = richTextBox.Document.Blocks;
var textAlignment = richTextBox.Document.TextAlignment;
if (blocks.Count == 0)
{
return(textAlignment);
}
if (blocks.Count == 1)
{
var paragraph = blocks.FirstBlock as Paragraph;
if (paragraph == null)
{
return(textAlignment);
}
return(paragraph.TextAlignment);
}
return(textAlignment);
}
if (adornedElement != null)
{
switch (adornedElement.HorizontalContentAlignment)
{
case HorizontalAlignment.Left:
return(TextAlignment.Left);
case HorizontalAlignment.Right:
return(TextAlignment.Right);
case HorizontalAlignment.Center:
return(TextAlignment.Center);
case HorizontalAlignment.Stretch:
return(TextAlignment.Justify);
}
}
return(TextAlignment.Left);
}
public static bool NotSet(this DependencyObject depObj, DependencyProperty prop)
{
return(DependencyPropertyHelper.GetValueSource(depObj, prop).BaseValueSource != BaseValueSource.Local);
}
public static bool IsPropertyDefault(DependencyObject obj, DependencyProperty dp)
{
BaseValueSource baseValueSource = DependencyPropertyHelper.GetValueSource(obj, dp).BaseValueSource;
return(baseValueSource == BaseValueSource.Default);
}
/// <summary>
/// 判断某个属性当前的值是否为本地值。
/// </summary>
/// <param name="obj"></param>
/// <param name="property"></param>
/// <returns></returns>
public static bool IsLocalValue(this DependencyObject obj, DependencyProperty property)
{
return(DependencyPropertyHelper.GetValueSource(obj, property).BaseValueSource == BaseValueSource.Local);
}
static void propertyCallback(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
((AwesomeTextbox)d).TheRectangle.Fill = ((AwesomeTextbox)d).SquareColor;
DependencyPropertyHelper.GetValueSource(d, SquareColorProperty);
}
public static bool IsDefaultValue(DependencyObject d, DependencyProperty dp) => DependencyPropertyHelper.GetValueSource(d, dp).BaseValueSource == BaseValueSource.Default;
/// <summary>
/// Taken from Helper code for DataGrid.
/// </summary>
private static bool IsDefaultValue(DependencyObject d, DependencyProperty dp)
{
return(DependencyPropertyHelper.GetValueSource(d, dp).BaseValueSource == BaseValueSource.Default);
}
internal void UpdateAdvanceOptionsForItem(MarkupObject markupObject, DependencyObject dependencyObject, DependencyPropertyDescriptor dpDescriptor,
out string imageName, out object tooltip)
{
imageName = "AdvancedProperties11";
tooltip = "Advanced Properties";
bool isResource = false;
bool isDynamicResource = false;
var markupProperty = markupObject.Properties.Where(p => p.Name == PropertyName).FirstOrDefault();
if (markupProperty != null)
{
//TODO: need to find a better way to determine if a StaticResource has been applied to any property not just a style
isResource = (markupProperty.Value is Style);
isDynamicResource = (markupProperty.Value is DynamicResourceExtension);
}
if (isResource || isDynamicResource)
{
imageName = "Resource11";
tooltip = "Resource";
}
else
{
if ((dependencyObject != null) && (dpDescriptor != null))
{
if (BindingOperations.GetBindingExpressionBase(dependencyObject, dpDescriptor.DependencyProperty) != null)
{
imageName = "Database11";
tooltip = "Databinding";
}
else
{
BaseValueSource bvs =
DependencyPropertyHelper
.GetValueSource(dependencyObject, dpDescriptor.DependencyProperty)
.BaseValueSource;
switch (bvs)
{
case BaseValueSource.Inherited:
case BaseValueSource.DefaultStyle:
case BaseValueSource.ImplicitStyleReference:
imageName = "Inheritance11";
tooltip = "Inheritance";
break;
case BaseValueSource.DefaultStyleTrigger:
break;
case BaseValueSource.Style:
imageName = "Style11";
tooltip = "Style Setter";
break;
case BaseValueSource.Local:
imageName = "Local11";
tooltip = "Local";
break;
}
}
}
}
}
internal void UpdateAdvanceOptionsForItem(DependencyObject dependencyObject, DependencyPropertyDescriptor dpDescriptor, out object tooltip)
{
tooltip = StringConstants.Default;
bool isResource = false;
bool isDynamicResource = false;
//TODO: need to find a better way to determine if a StaticResource has been applied to any property not just a style(maybe with StaticResourceExtension)
isResource = typeof(Style).IsAssignableFrom(this.PropertyType);
isDynamicResource = typeof(DynamicResourceExtension).IsAssignableFrom(this.PropertyType);
if (isResource || isDynamicResource)
{
tooltip = StringConstants.Resource;
}
else
{
if ((dependencyObject != null) && (dpDescriptor != null))
{
if (BindingOperations.GetBindingExpressionBase(dependencyObject, dpDescriptor.DependencyProperty) != null)
{
tooltip = StringConstants.Databinding;
}
else
{
BaseValueSource bvs =
DependencyPropertyHelper
.GetValueSource(dependencyObject, dpDescriptor.DependencyProperty)
.BaseValueSource;
switch (bvs)
{
case BaseValueSource.Inherited:
case BaseValueSource.DefaultStyle:
case BaseValueSource.ImplicitStyleReference:
tooltip = StringConstants.Inheritance;
break;
case BaseValueSource.DefaultStyleTrigger:
break;
case BaseValueSource.Style:
tooltip = StringConstants.StyleSetter;
break;
case BaseValueSource.Local:
tooltip = StringConstants.Local;
break;
}
}
}
else
{
// When the Value is diferent from the DefaultValue, use the local icon.
if (!object.Equals(this.Value, this.DefaultValue))
{
if (this.DefaultValue != null)
{
tooltip = StringConstants.Local;
}
else
{
if (this.PropertyType.IsValueType)
{
var defaultValue = Activator.CreateInstance(this.PropertyType);
// When the Value is diferent from the DefaultValue, use the local icon.
if (!object.Equals(this.Value, defaultValue))
{
tooltip = StringConstants.Local;
}
}
else
{
// When the Value is diferent from null, use the local icon.
if (this.Value != null)
{
tooltip = StringConstants.Local;
}
}
}
}
}
}
}
private void Update()
{
if (ignoreUpdate)
{
return;
}
this.isLocallySet = false;
this.isInvalidBinding = false;
this.isDatabound = false;
DependencyProperty dp = this.DependencyProperty;
DependencyObject d = this.Target as DependencyObject;
if (SnoopModes.MultipleDispatcherMode && d != null && d.Dispatcher != this.Dispatcher)
{
return;
}
if (dp != null && d != null)
{
if (d.ReadLocalValue(dp) != DependencyProperty.UnsetValue)
{
this.isLocallySet = true;
}
BindingExpressionBase expression = BindingOperations.GetBindingExpressionBase(d, dp);
if (expression != null)
{
this.isDatabound = true;
if (expression.HasError || expression.Status != BindingStatus.Active && !(expression is PriorityBindingExpression))
{
this.isInvalidBinding = true;
StringBuilder builder = new StringBuilder();
StringWriter writer = new StringWriter(builder);
TextWriterTraceListener tracer = new TextWriterTraceListener(writer);
PresentationTraceSources.DataBindingSource.Listeners.Add(tracer);
// reset binding to get the error message.
ignoreUpdate = true;
d.ClearValue(dp);
BindingOperations.SetBinding(d, dp, expression.ParentBindingBase);
ignoreUpdate = false;
// cplotts note: maciek ... are you saying that this is another, more concise way to dispatch the following code?
//Dispatcher.BeginInvoke(DispatcherPriority.ApplicationIdle, () =>
// {
// bindingError = builder.ToString();
// this.OnPropertyChanged("BindingError");
// PresentationTraceSources.DataBindingSource.Listeners.Remove(tracer);
// writer.Close();
// });
// this needs to happen on idle so that we can actually run the binding, which may occur asynchronously.
Dispatcher.BeginInvoke
(
DispatcherPriority.ApplicationIdle,
new DispatcherOperationCallback
(
delegate(object source)
{
bindingError = builder.ToString();
this.OnPropertyChanged("BindingError");
PresentationTraceSources.DataBindingSource.Listeners.Remove(tracer);
writer.Close();
return(null);
}
),
null
);
}
else
{
bindingError = string.Empty;
}
}
this.valueSource = DependencyPropertyHelper.GetValueSource(d, dp);
}
this.OnPropertyChanged("IsLocallySet");
this.OnPropertyChanged("IsInvalidBinding");
this.OnPropertyChanged("StringValue");
this.OnPropertyChanged("DescriptiveValue");
this.OnPropertyChanged("IsDatabound");
this.OnPropertyChanged("IsExpression");
this.OnPropertyChanged("IsAnimated");
this.OnPropertyChanged("ValueSource");
}
