/// <summary>
/// Gets an ordered <see cref="IReadOnlyList{ChunkTreeResult}"/> of parsed <see cref="ChunkTree"/>s and
/// file paths for each <c>_ViewImports</c> that is applicable to the page located at
/// <paramref name="pagePath"/>. The list is ordered so that the <see cref="ChunkTreeResult"/>'s
/// <see cref="ChunkTreeResult.ChunkTree"/> for the <c>_ViewImports</c> closest to the
/// <paramref name="pagePath"/> in the file system appears first.
/// </summary>
/// <param name="pagePath">The path of the page to locate inherited chunks for.</param>
/// <returns>A <see cref="IReadOnlyList{ChunkTreeResult}"/> of parsed <c>_ViewImports</c>
/// <see cref="ChunkTree"/>s and their file paths.</returns>
/// <remarks>
/// The resulting <see cref="IReadOnlyList{ChunkTreeResult}"/> is ordered so that the result
/// for a _ViewImport closest to the application root appears first and the _ViewImport
/// closest to the page appears last i.e.
/// [ /_ViewImport, /Views/_ViewImport, /Views/Home/_ViewImport ]
/// </remarks>
public virtual IReadOnlyList <ChunkTreeResult> GetInheritedChunkTreeResults(string pagePath)
{
if (pagePath == null)
{
throw new ArgumentNullException(nameof(pagePath));
}
var inheritedChunkTreeResults = new List <ChunkTreeResult>();
var templateEngine = new RazorTemplateEngine(_razorHost);
foreach (var viewImportsPath in ViewHierarchyUtility.GetViewImportsLocations(pagePath))
{
// viewImportsPath contains the app-relative path of the _ViewImports.
// Since the parsing of a _ViewImports would cause parent _ViewImports to be parsed
// we need to ensure the paths are app-relative to allow the GetGlobalFileLocations
// for the current _ViewImports to succeed.
var chunkTree = _chunkTreeCache.GetOrAdd(
viewImportsPath,
fileInfo => ParseViewFile(
templateEngine,
fileInfo,
viewImportsPath));
if (chunkTree != null)
{
var result = new ChunkTreeResult(chunkTree, viewImportsPath);
inheritedChunkTreeResults.Insert(0, result);
}
}
return(inheritedChunkTreeResults);
}
/// <summary>
/// Gets an ordered <see cref="IReadOnlyList{ChunkTreeResult}"/> of parsed <see cref="ChunkTree"/>s and
/// file paths for each <c>_ViewImports</c> that is applicable to the page located at
/// <paramref name="pagePath"/>. The list is ordered so that the <see cref="ChunkTreeResult"/>'s
/// <see cref="ChunkTreeResult.ChunkTree"/> for the <c>_ViewImports</c> closest to the
/// <paramref name="pagePath"/> in the file system appears first.
/// </summary>
/// <param name="pagePath">The path of the page to locate inherited chunks for.</param>
/// <returns>A <see cref="IReadOnlyList{ChunkTreeResult}"/> of parsed <c>_ViewImports</c>
/// <see cref="ChunkTree"/>s and their file paths.</returns>
/// <remarks>
/// The resulting <see cref="IReadOnlyList{ChunkTreeResult}"/> is ordered so that the result
/// for a _ViewImport closest to the application root appears first and the _ViewImport
/// closest to the page appears last i.e.
/// [ /_ViewImport, /Views/_ViewImport, /Views/Home/_ViewImport ]
/// </remarks>
public virtual IReadOnlyList<ChunkTreeResult> GetInheritedChunkTreeResults(string pagePath)
{
if (pagePath == null)
{
throw new ArgumentNullException(nameof(pagePath));
}
var inheritedChunkTreeResults = new List<ChunkTreeResult>();
var templateEngine = new RazorTemplateEngine(_razorHost);
foreach (var viewImportsPath in ViewHierarchyUtility.GetViewImportsLocations(pagePath))
{
// viewImportsPath contains the app-relative path of the _ViewImports.
// Since the parsing of a _ViewImports would cause parent _ViewImports to be parsed
// we need to ensure the paths are app-relative to allow the GetGlobalFileLocations
// for the current _ViewImports to succeed.
var chunkTree = _chunkTreeCache.GetOrAdd(
viewImportsPath,
fileInfo => ParseViewFile(
templateEngine,
fileInfo,
viewImportsPath));
if (chunkTree != null)
{
var result = new ChunkTreeResult(chunkTree, viewImportsPath);
inheritedChunkTreeResults.Insert(0, result);
}
}
return inheritedChunkTreeResults;
}