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 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);
}
}
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 OnTargetChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
var me = (XamlView)d;
var target = e.NewValue;
var styles = me._styles;
var tabs = me._tabs;
if (target != null)
{
var tabsToRemove = new HashSet <string>(tabs.Select(o => o.Name));
foreach (var propertyInfo in target.GetType().GetProperties(BindingFlags.Instance | BindingFlags.Public))
{
if (!propertyInfo.CanRead || propertyInfo.GetIndexParameters().Length > 0)
{
continue;
}
if (AcceptableTypes.All(o => !o.IsAssignableFrom(propertyInfo.PropertyType)))
{
continue;
}
var propertyXaml = tabs.FirstOrDefault(o => o.Name == propertyInfo.Name);
if (propertyXaml == null)
{
propertyXaml = new PropertyXaml(propertyInfo.Name);
var insertIndex = tabs.Count;
for (var i = 0; i < tabs.Count; i++)
{
if (string.CompareOrdinal(propertyInfo.Name, tabs[i].Name) < 0)
{
insertIndex = i;
break;
}
}
tabs.Insert(insertIndex, propertyXaml);
}
else
{
tabsToRemove.Remove(propertyInfo.Name);
}
var value = propertyInfo.GetValue(target, null);
if (value != null)
{
try
{
string serializedStyle;
using (var stringWriter = new StringWriter())
using (var xmlTextWriter = new XmlTextWriter(stringWriter)
{
Formatting = Formatting.Indented
})
{
XamlWriter.Save(value, xmlTextWriter);
serializedStyle = stringWriter.ToString();
}
var paragraph = new Paragraph {
Style = styles.GeneralStyle
};
paragraph.FillParagraph(serializedStyle, styles);
propertyXaml.Document = new FlowDocument {
Blocks = { paragraph }
};
}
catch (Exception ex)
{
var message = "[Exception]" + Environment.NewLine + Environment.NewLine + ex;
var paragraph = new Paragraph {
Style = styles.GeneralStyle
};
paragraph.AddRun(message, styles.ErrorStyle);
propertyXaml.Document = new FlowDocument {
Blocks = { paragraph }
};
}
}
else
{
var paragraph = new Paragraph {
Style = styles.GeneralStyle
};
paragraph.AddRun("(NULL)", styles.TextStyle);
propertyXaml.Document = new FlowDocument {
Blocks = { paragraph }
};
}
}
foreach (var tabName in tabsToRemove)
{
var tab = tabs.FirstOrDefault(o => o.Name == tabName);
if (tab != null)
{
tabs.Remove(tab);
}
}
}
else
{
tabs.Clear();
}
}
/// <summary>
/// Creates a FlowDocument from the serialized XAML with simple syntax coloring.
/// </summary>
/// <param name="success"></param>
/// <param name="serializedStyle"></param>
/// <returns></returns>
private FlowDocument CreateFlowDocument(bool success, string serializedStyle)
{
var document = new FlowDocument();
if (success)
{
using (var reader = new XmlTextReader(serializedStyle, XmlNodeType.Document, null))
{
var indent = 0;
var paragraph = new Paragraph();
while (reader.Read())
{
if (reader.IsStartElement()) // opening tag, e.g. <Button
{
string elementName = reader.Name;
// indentation
paragraph.AddRun(_textStyle, new string(' ', indent * 4));
paragraph.AddRun(_bracketStyle, "<");
paragraph.AddRun(_elementStyle, elementName);
if (reader.HasAttributes)
{
// write tag attributes
while (reader.MoveToNextAttribute())
{
paragraph.AddRun(_attributeStyle, " " + reader.Name);
paragraph.AddRun(_bracketStyle, "=");
paragraph.AddRun(_quotesStyle, "\"");
if (reader.Name == "TargetType") // target type fix - should use the Type MarkupExtension
{
paragraph.AddRun(_textStyle, "{x:Type " + reader.Value + "}");
}
else if (reader.Name == "Margin" || reader.Name == "Padding")
{
paragraph.AddRun(_textStyle, SimplifyThickness(reader.Value));
}
else
{
paragraph.AddRun(_textStyle, reader.Value);
}
paragraph.AddRun(_quotesStyle, "\"");
paragraph.AddLineBreak();
paragraph.AddRun(_textStyle, new string(' ', indent * 4 + elementName.Length + 1));
}
paragraph.RemoveLastLineBreak();
reader.MoveToElement();
}
if (reader.IsEmptyElement) // empty tag, e.g. <Button />
{
paragraph.AddRun(_bracketStyle, " />");
paragraph.AddLineBreak();
--indent;
}
else // non-empty tag, e.g. <Button>
{
paragraph.AddRun(_bracketStyle, ">");
paragraph.AddLineBreak();
}
++indent;
}
else // closing tag, e.g. </Button>
{
--indent;
// indentation
paragraph.AddRun(_textStyle, new string(' ', indent * 4));
// text content of a tag, e.g. the text "Do This" in <Button>Do This</Button>
if (reader.NodeType == XmlNodeType.Text)
{
var value = reader.ReadContentAsString();
if (reader.Name == "Thickness")
{
value = SimplifyThickness(value);
}
paragraph.AddRun(_textStyle, value);
}
paragraph.AddRun(_bracketStyle, "</");
paragraph.AddRun(_elementStyle, reader.Name);
paragraph.AddRun(_bracketStyle, ">");
paragraph.AddLineBreak();
}
}
document.Blocks.Add(paragraph);
}
}
else // no style found
{
document.Blocks.Add(new Paragraph(new Run(serializedStyle))
{
TextAlignment = TextAlignment.Left
});
}
return(document);
}
