Files
Umbraco-CMS/src/Umbraco.Web/UI/JavaScript/JsInitialization.cs
2018-01-20 10:19:57 +01:00

108 lines
4.1 KiB
C#

using System.Collections.Generic;
using System.Text.RegularExpressions;
using System.Web;
using ClientDependency.Core;
using Newtonsoft.Json;
using Newtonsoft.Json.Linq;
using Umbraco.Core.IO;
using Umbraco.Core.Manifest;
using System.Linq;
using System.Text;
namespace Umbraco.Web.UI.JavaScript
{
/// <summary>
/// Reads from all defined manifests and ensures that any of their initialization is output with the
/// main Umbraco initialization output.
/// </summary>
internal class JsInitialization : AssetInitialization
{
private readonly ManifestParser _parser;
public JsInitialization(ManifestParser parser)
{
_parser = parser;
}
// deal with javascript functions inside of json (not a supported json syntax)
private const string PrefixJavaScriptObject = "@@@@";
private static readonly Regex JsFunctionParser = new Regex($"(\"{PrefixJavaScriptObject}(.*?)\")+",
RegexOptions.Multiline | RegexOptions.CultureInvariant | RegexOptions.Compiled);
// replace tokens in the js main
private static readonly Regex Token = new Regex("(\"##\\w+?##\")", RegexOptions.Compiled);
/// <summary>
/// Processes all found manifest files and outputs the main.js file containing all plugin manifests
/// </summary>
public string GetJavascriptInitialization(HttpContextBase httpContext, IEnumerable<string> umbracoInit, IEnumerable<string> additionalJsFiles = null)
{
var files = GetScriptFiles(httpContext, umbracoInit, additionalJsFiles);
var jarray = new StringBuilder();
jarray.AppendLine("[");
var first = true;
foreach (var file in files)
{
if (first) first = false;
else jarray.AppendLine(",");
jarray.Append("\"");
jarray.Append(file);
jarray.Append("\"");
}
jarray.Append("]");
return WriteScript(jarray.ToString(), IOHelper.ResolveUrl(SystemDirectories.Umbraco));
}
public IEnumerable<string> GetScriptFiles(HttpContextBase httpContext, IEnumerable<string> umbracoInit, IEnumerable<string> additionalJsFiles = null)
{
var scripts = new HashSet<string>();
foreach (var script in umbracoInit)
scripts.Add(script);
foreach (var script in _parser.Manifest.Scripts)
scripts.Add(script);
if (additionalJsFiles != null)
foreach (var script in additionalJsFiles)
scripts.Add(script);
scripts = new HashSet<string>(OptimizeAssetCollection(scripts, ClientDependencyType.Javascript, httpContext));
foreach (var script in ScanPropertyEditors(ClientDependencyType.Javascript, httpContext))
scripts.Add(script);
return scripts.ToArray();
}
/// <summary>
/// Returns the default config as a JArray
/// </summary>
/// <returns></returns>
internal static IEnumerable<string> GetDefaultInitialization()
{
var resources = JsonConvert.DeserializeObject<JArray>(Resources.JsInitialize);
return resources.Where(x => x.Type == JTokenType.String).Select(x => x.ToString());
}
/// <summary>
/// Parses the JsResources.Main and replaces the replacement tokens accordingly.
/// </summary>
/// <param name="replacements"></param>
/// <returns></returns>
internal static string WriteScript(params string[] replacements)
{
var count = 0;
// replace, catering for the special syntax when we have
// js function() objects contained in the json
return Token.Replace(Resources.Main, match =>
{
var replacement = replacements[count++];
return JsFunctionParser.Replace(replacement, "$2");
});
}
}
}