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Merged
Himanshi Goyal (himgoyalmicro) merged 1 commit into from
Sep 16, 2026
Merged

Import loose XAML documents as text #814

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139 changes: 114 additions & 25 deletions Documents/Fixed Documents/DocumentSerialization/ThumbViewer.xaml.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -8,7 +8,6 @@
using System.Windows.Documents;
using System.Windows.Documents.Serialization;
using System.IO;
using System.Windows.Markup;
using System.Windows.Controls;
using System.Windows.Controls.Primitives;
using System.Windows.Media;
Expand Down Expand Up @@ -242,23 +241,9 @@ private bool OpenFile(string fileName)
// Apply appropriate converter to a file content
try
{
if (fileName.EndsWith(".xaml"))
if (fileName.EndsWith(".xaml", StringComparison.OrdinalIgnoreCase))
{
using (FileStream inputStream = File.OpenRead(fileName))
{
ParserContext pc = new ParserContext();
pc.BaseUri =
new Uri(System.Environment.CurrentDirectory + "/");
newDocument = XamlReader.Load(inputStream, pc) as object;
if (newDocument == null)
{
MessageBox.Show(
"Invalid Xaml File. Could not be parsed" +
fileName, this.GetType().Name,
MessageBoxButton.OK, MessageBoxImage.Error);
return false;
}
}
newDocument = LoadTextOnlyFlowDocument(fileName);
}
}
catch (Exception e)
Expand Down Expand Up @@ -302,6 +287,114 @@ private bool OpenFile(string fileName)
return true;
}// end:OpenFile()

private static FlowDocument LoadTextOnlyFlowDocument(string fileName)
{
const long maxDocumentCharacters = 10 * 1024 * 1024;
const string presentationNamespace =
"http://schemas.microsoft.com/winfx/2006/xaml/presentation";

FileInfo file = new FileInfo(fileName);
if (file.Length > maxDocumentCharacters)
{
throw new InvalidDataException(
"The XAML document exceeds the 10 MB import limit.");
}

XmlReaderSettings settings = new XmlReaderSettings
{
DtdProcessing = DtdProcessing.Prohibit,
XmlResolver = null,
MaxCharactersInDocument = maxDocumentCharacters,
IgnoreComments = true,
IgnoreProcessingInstructions = true
};

FlowDocument document = new FlowDocument();
Stack<Paragraph> paragraphs = new Stack<Paragraph>();
bool foundRoot = false;
int resourcesDepth = -1;

using (FileStream inputStream = File.OpenRead(fileName))
using (XmlReader reader = XmlReader.Create(inputStream, settings))
{
while (reader.Read())
{
if (reader.NodeType == XmlNodeType.Element)
{
if (!foundRoot)
{
if (reader.LocalName != nameof(FlowDocument) ||
reader.NamespaceURI != presentationNamespace)
{
throw new InvalidDataException(
"The selected file is not a WPF FlowDocument.");
}

foundRoot = true;
}
else if (reader.NamespaceURI != presentationNamespace)
{
throw new InvalidDataException(
"Only WPF FlowDocument elements are supported.");
}

if (reader.LocalName == "FlowDocument.Resources")
{
if (!reader.IsEmptyElement)
{
resourcesDepth = reader.Depth;
}
}
else if (resourcesDepth < 0 &&
reader.LocalName == nameof(Paragraph))
{
Paragraph paragraph = new Paragraph();
document.Blocks.Add(paragraph);
if (!reader.IsEmptyElement)
{
paragraphs.Push(paragraph);
}
}
else if (resourcesDepth < 0 &&
reader.LocalName == nameof(LineBreak) &&
paragraphs.Count > 0)
{
paragraphs.Peek().Inlines.Add(new LineBreak());
}
}
else if ((reader.NodeType == XmlNodeType.Text ||
reader.NodeType == XmlNodeType.CDATA ||
reader.NodeType == XmlNodeType.SignificantWhitespace) &&
resourcesDepth < 0 &&
paragraphs.Count > 0)
{
paragraphs.Peek().Inlines.Add(new Run(reader.Value));
}
else if (reader.NodeType == XmlNodeType.EndElement)
{
if (reader.Depth == resourcesDepth)
{
resourcesDepth = -1;
}
else if (resourcesDepth < 0 &&
reader.LocalName == nameof(Paragraph) &&
paragraphs.Count > 0)
{
paragraphs.Pop();
}
}
}
}

if (!foundRoot)
{
throw new InvalidDataException(
"The selected file does not contain a FlowDocument.");
}

return document;
}


// ---------------------------- CloseFile -----------------------------
private void CloseFile()
Expand Down Expand Up @@ -348,7 +441,8 @@ private void CopyStream(Stream src, Stream destination)


// -------------------------- OpenFileFilter --------------------------
private string OpenFileFilter => "XAML FlowDocuments (*.xaml)|*.xaml";
private string OpenFileFilter =>
"XAML FlowDocuments - text-only import (*.xaml)|*.xaml";


// ---------------------------- OnNewQuery ----------------------------
Expand Down Expand Up @@ -1016,13 +1110,9 @@ private void AddBookmarkOrComment(ListBox collection, Annotation ann)
new AnnotationResource( FDPV.MasterPageNumber.ToString() ) );
}

Assembly a = System.Reflection.Assembly.GetExecutingAssembly();

string path = System.IO.Path.Combine(
a.Location.Remove(a.Location.LastIndexOf('\\')), "GoButton.xaml");

StackPanel EntryInList =
XamlReader.Load(File.OpenRead(path)) as StackPanel;
Application.LoadComponent(
new Uri("GoButton.xaml", UriKind.Relative)) as StackPanel;

EntryInList.Width = BookmarkList.Width - 10;

Expand Down Expand Up @@ -1221,4 +1311,3 @@ protected virtual void Dispose(bool disposing)
}// end:partial class ThumbViewer

}// end:namespace DocumentSerialization

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