private static void AddMarkupValue(this Paragraph paragraph, string value, XamlStyles styles)
{
var markupString = value.Substring(1, value.Length - 2);
var indexOfSpace = markupString.IndexOf(' ');
var markupType = indexOfSpace < 0 ? markupString : markupString.Substring(0, indexOfSpace);
paragraph.AddRun("{", styles.DelimiterStyle);
paragraph.AddRun(markupType, styles.NameStyle);
if (indexOfSpace >= 0)
{
paragraph.AddMarkupBody(markupString.Substring(indexOfSpace), styles);
}
paragraph.AddRun("}", styles.DelimiterStyle);
}
private static void AddMarkupBody(this Paragraph paragraph, string value, XamlStyles styles)
{
var indexOfNonspace = FindNonspaceInMarkup(value);
var spaceText = indexOfNonspace < 0 ? value : value.Substring(0, indexOfNonspace);
paragraph.AddRun(spaceText, styles.AttributeValueStyle);
if (indexOfNonspace < 0)
{
return;
}
value = value.Substring(indexOfNonspace);
if (value.StartsWith("{}"))
{
var indexOfComma = FindCommaInMarkup(value);
var text = indexOfComma < 0 ? value : value.Substring(0, indexOfComma);
paragraph.AddRun(text, styles.TextStyle);
if (indexOfComma < 0)
{
return;
}
value = value.Substring(indexOfComma);
}
else if (value.StartsWith("{"))
{
var indexOfClosedBrace = FindClosedBraceInMarkup(value);
if (indexOfClosedBrace < 0)
{
paragraph.AddRun(value, styles.ErrorStyle);
return;
}
paragraph.AddMarkupValue(value.Substring(0, indexOfClosedBrace), styles);
value = value.Substring(indexOfClosedBrace + 1);
}
// TODO:
// Path=Title, StringFormat={}{0}AVS, ElementName=window
paragraph.AddRun(value, styles.AttributeValueStyle);
}
/// <summary>
/// Fill flow document paragraph with syntax colored XAML.
/// </summary>
/// <param name="paragraph">paragraph to be filled</param>
/// <param name="xaml">xaml to colorize</param>
/// <param name="styles">styles used for syntax coloring</param>
public static void FillParagraph(this Paragraph paragraph, string xaml, XamlStyles styles)
{
using (var reader = new XmlTextReader(xaml, XmlNodeType.Document, null))
{
var indent = 0;
var tagOpened = false;
while (reader.Read())
{
if (reader.IsStartElement()) // opening tag, e.g. <Button
{
if (tagOpened)
{
// new line for child element
paragraph.Inlines.Add(new LineBreak());
}
// indentation
paragraph.AddRun(new string(' ', indent * 4), styles.TextStyle);
paragraph.AddRun("<", styles.DelimiterStyle);
paragraph.AddRun(reader.Name, styles.NameStyle);
if (reader.HasAttributes)
{
// write tag attributes
while (reader.MoveToNextAttribute())
{
paragraph.AddRun(" " + reader.Name, styles.AttributeStyle);
paragraph.AddRun("=", styles.DelimiterStyle);
paragraph.AddRun("\"", styles.QuotesStyle);
string value;
if (reader.Name == "TargetType") // target type fix - should use the Type MarkupExtension
{
value = "{x:Type " + reader.Value + "}";
}
else
{
value = reader.Value;
}
paragraph.AddAttributeValue(value, styles);
paragraph.AddRun("\"", styles.QuotesStyle);
}
reader.MoveToElement();
}
if (reader.IsEmptyElement) // empty tag, e.g. <Button />
{
paragraph.AddRun(" />", styles.DelimiterStyle);
paragraph.Inlines.Add(new LineBreak());
tagOpened = false;
--indent;
}
else // non-empty tag, e.g. <Button>
{
paragraph.AddRun(">", styles.DelimiterStyle);
tagOpened = true;
}
++indent;
}
else // closing tag, e.g. </Button>
{
--indent;
// text content of a tag, e.g. the text "Do This" in <Button>Do This</Button>
if (reader.NodeType == XmlNodeType.Text)
{
var content = reader.ReadContentAsString();
if (content.IndexOfAny(new[] { '\r', '\n' }) >= 0 && indent > 0)
{
// indentation
paragraph.AddRun(new string(' ', indent * 4), styles.TextStyle);
}
paragraph.AddRun(content, styles.TextStyle);
}
else if (indent > 0)
{
// indentation
paragraph.AddRun(new string(' ', indent * 4), styles.TextStyle);
}
paragraph.AddRun("</", styles.DelimiterStyle);
paragraph.AddRun(reader.Name, styles.NameStyle);
paragraph.AddRun(">", styles.DelimiterStyle);
paragraph.Inlines.Add(new LineBreak());
tagOpened = false;
}
}
}
}
private static void AddAttributeValue(this Paragraph paragraph, string value, XamlStyles styles)
{
if (value.StartsWith("{}"))
{
paragraph.AddRun(value, styles.TextStyle);
}
else if (value.StartsWith("{") && value.EndsWith("}"))
{
paragraph.AddMarkupValue(value, styles);
}
else
{
paragraph.AddRun(value, styles.AttributeValueStyle);
}
}
public XamlView()
{
InitializeComponent();
_styles = new XamlStyles
{
DelimiterStyle = new Style(typeof(Run))
{
Setters = { new Setter(TextElement.ForegroundProperty, new SolidColorBrush(Color.FromRgb(240, 241, 242))) }
},
NameStyle = new Style(typeof(Run))
{
Setters = { new Setter(TextElement.ForegroundProperty, new SolidColorBrush(Color.FromRgb(103, 139, 176))) }
},
QuotesStyle = new Style(typeof(Run))
{
Setters = { new Setter(TextElement.ForegroundProperty, new SolidColorBrush(Color.FromRgb(235, 118, 0))) }
},
TextStyle = new Style(typeof(Run))
{
Setters = { new Setter(TextElement.ForegroundProperty, new SolidColorBrush(Colors.White)) }
},
AttributeStyle = new Style(typeof(Run))
{
Setters = { new Setter(TextElement.ForegroundProperty, new SolidColorBrush(Color.FromRgb(184, 201, 218))) }
},
AttributeValueStyle = new Style(typeof(Run))
{
Setters = { new Setter(TextElement.ForegroundProperty, new SolidColorBrush(Color.FromRgb(235, 118, 0))) }
},
ConstantValueStyle = new Style(typeof(Run))
{
Setters = { new Setter(TextElement.ForegroundProperty, new SolidColorBrush(Color.FromRgb(254, 204, 34))) }
},
ErrorStyle = new Style(typeof(Run))
{
Setters = { new Setter(TextElement.ForegroundProperty, new SolidColorBrush(Color.FromRgb(254, 51, 51))) }
},
GeneralStyle = new Style(typeof(Paragraph))
{
Setters =
{
new Setter(TextElement.BackgroundProperty, new SolidColorBrush(Color.FromRgb(34, 40, 42))),
new Setter(Block.TextAlignmentProperty, TextAlignment.Left),
new Setter(TextElement.FontFamilyProperty, new FontFamily("Consolas"))
}
}
};
_tabs = new ObservableCollection <PropertyXaml>();
Tabs.ItemsSource = _tabs;
Tabs.SetBinding(Selector.SelectedItemProperty,
new Binding(SelectedTabProperty.Name)
{
Source = this, Mode = BindingMode.TwoWay
});
DocView.SetBinding(FlowDocumentScrollViewer.DocumentProperty,
new Binding(SelectedTabProperty.Name + "." + PropertyXaml.DocumentProperty.Name)
{
Source = this, FallbackValue = null
});
}