Revert "Svg thumbnail failed rendering (#32936)" as it caused a regression (#38058)

Revert "Svg thumbnail failed rendering (#32936)"

This reverts commit 1d358af600.

src/modules/previewpane/SvgThumbnailProvider/SvgThumbnailProvider.cs

@@ -5,7 +5,8 @@ using System.Drawing.Drawing2D;
 using System.Globalization;
 using System.Reflection;
 using System.Runtime.CompilerServices;
-using System.Xml.Linq;
+using System.Threading;
+
 using Common.Utilities;
 using ManagedCommon;
 using Microsoft.Web.WebView2.Core;
@@ -117,51 +118,10 @@ namespace Microsoft.PowerToys.ThumbnailHandler.Svg
             _browser.Height = (int)cx;
             _browser.NavigationCompleted += async (object sender, CoreWebView2NavigationCompletedEventArgs args) =>
             {
-                try
-                {
-                    // Check if the SVG element is present
                 var a = await _browser.ExecuteScriptAsync($"document.getElementsByTagName('svg')[0].viewBox;");
                 if (a != null)
                 {
-                        var svgContent = SvgContents.Substring(SvgContents.IndexOf("<svg", StringComparison.OrdinalIgnoreCase), SvgContents.IndexOf("</svg>", StringComparison.OrdinalIgnoreCase) - SvgContents.IndexOf("<svg", StringComparison.OrdinalIgnoreCase) + "</svg>".Length);
+                    await _browser.ExecuteScriptAsync($"document.getElementsByTagName('svg')[0].style = 'width:100%;height:100%';");
-
-                        Dictionary<string, string> styleDict = new Dictionary<string, string>();
-
-                        // Try to parse the SVG content
-                        try
-                        {
-                            // Attempt to parse the svgContent
-                            var svgDocument = XDocument.Parse(svgContent);
-                            var svgElement = svgDocument.Root;
-                            var currentStyle = svgElement?.Attribute("style")?.Value;
-
-                            // If style attribute exists, preserve existing styles
-                            if (!string.IsNullOrEmpty(currentStyle) && currentStyle != "null")
-                            {
-                                styleDict = currentStyle
-                                    .Split(';', StringSplitOptions.RemoveEmptyEntries)
-                                    .Select(stylePart => stylePart.Split(':', 2, StringSplitOptions.TrimEntries))
-                                    .Where(styleKeyValue => styleKeyValue.Length == 2 && !string.IsNullOrEmpty(styleKeyValue[0]))
-                                    .ToDictionary(
-                                        styleKeyValue => styleKeyValue[0],
-                                        styleKeyValue => styleKeyValue[1]);
-                            }
-                        }
-                        catch (Exception ex)
-                        {
-                            // Log the error if the SVG content is not valid or parsing fails
-                            Logger.LogError($"Failed to parse SVG content: {ex.Message}");
-                        }
-
-                        // Add or replace width and height in the existing style
-                        styleDict["width"] = "100%";
-                        styleDict["height"] = "100%";
-
-                        // Construct a single JavaScript string to set all properties
-                        var styleScript = string.Join(";", styleDict.Select(kv => $"document.getElementsByTagName('svg')[0].style.setProperty('{kv.Key}', '{kv.Value}');"));
-
-                        // Apply the new style attributes using the constructed script
-                        await _browser.ExecuteScriptAsync(styleScript);
                 }
 
                 // Hide scrollbar - fixes #18286
@@ -182,12 +142,6 @@ namespace Microsoft.PowerToys.ThumbnailHandler.Svg
                 }
 
                 thumbnailDone.Set();
-                }
-                catch (Exception ex)
-                {
-                    Logger.LogError("Error during NavigationCompleted: ", ex);
-                    thumbnailDone.Set();
-                }
             };
 
             var webView2Options = new CoreWebView2EnvironmentOptions("--block-new-web-contents");
@@ -197,8 +151,6 @@ namespace Microsoft.PowerToys.ThumbnailHandler.Svg
                    .ConfigureAwait(true).GetAwaiter();
 
             webView2EnvironmentAwaiter.OnCompleted(async () =>
-            {
-                for (int attempt = 0; attempt < 3; attempt++)
             {
                 try
                 {
@@ -246,21 +198,11 @@ namespace Microsoft.PowerToys.ThumbnailHandler.Svg
                     {
                         _browser.NavigateToString(SvgContents);
                     }
-
-                        break; // Exit the retry loop if initialization succeeds
                 }
                 catch (Exception ex)
-                    {
-                        Logger.LogError($"Initialization attempt {attempt} failed: {ex.Message}");
-                        if (attempt == 2)
                 {
                     Logger.LogError($"Failed running webView2Environment completed for {FilePath} : ", ex);
                     thumbnailDone.Set();
-                            return;
-                        }
-
-                        await Task.Delay(1000); // Delay before retrying
-                    }
                 }
             });