/// <summary>
/// Loads JavaScript extensions and preferences from the specified directory.
/// </summary>
/// <param name="extensionsDirectory">Pathname of the extensions directory.</param>
public void LoadExtensions(string extensionsDirectory)
{
List <InternalHandle> extensions = new List <InternalHandle>();
var files = Directory.EnumerateFiles(extensionsDirectory, "*.*");
ObjectHandle emmet = _engine.DynamicGlobalObject.window.emmet;
foreach (string filePath in files)
{
if (0 != string.Compare(Path.GetFileName(filePath), PreferencesFileName, true))
{
extensions.Add(_engine.CreateValue(filePath));
continue;
}
string content = File.ReadAllText(filePath);
Handle parameter = _engine.CreateValue(content);
Handle result = emmet.Call("loadUserData", emmet, parameter);
if (result.IsError)
{
this.TraceError($"Failed to load Emmet preferences from {filePath}: {result.AsString}");
}
else
{
this.Trace($"Successfully loaded Emmet preferences from {filePath}");
}
}
if (extensions.Count > 0)
{
var parameter = _engine.CreateArray(extensions.ToArray());
Handle result = emmet.Call("loadExtensions", emmet, parameter);
if (result.IsError)
{
this.TraceError($"Failed to load Emmet extensions: {result.AsString}");
}
else
{
this.Trace($"Successfully loaded {extensions.Count} Emmet extensions");
}
}
}
/// <summary>
/// Looks for tab stops in the specified content and returns a processed version with expanded
/// placeholders and tab stops found.
/// </summary>
/// <param name="engine">V8 instance with Emmet engine compiled in it.</param>
/// <param name="content">Expanded abbreviation content.</param>
/// <exception cref="Exception{EmmetEngineExceptionArgs}">
/// Indicates that Emmet engine has failed to parse the specified content.
/// </exception>
public static TabStopsParser ParseContent(V8Engine engine, string content)
{
ObjectHandle tabStopsUtil = engine.DynamicGlobalObject.window.emmet.tabStops;
Handle extractResult = tabStopsUtil.Call("extract", null, engine.CreateValue(content));
if (extractResult.IsError)
{
var ex = new EmmetEngineExceptionArgs(
"Error while trying to extract tab stops.",
extractResult);
throw new Exception <EmmetEngineExceptionArgs>(ex);
}
TabStopsParser retVal = new TabStopsParser();
ObjectHandle tabStopsObj = (ObjectHandle)extractResult;
retVal.Content = tabStopsObj.GetProperty(@"text").AsString;
ObjectHandle tabStopsList = tabStopsObj.GetProperty(@"tabstops");
// Tab stops should be added before modifying document so that editor can track their position.
int tabStopsCount = tabStopsList.ArrayLength;
if (tabStopsCount > 0)
{
retVal.TabStops = new Range[tabStopsCount];
retVal.TabStopGroups = new int[tabStopsCount];
for (int i = 0; i < tabStopsCount; i++)
{
ObjectHandle tabStopObj = tabStopsList.GetProperty(i.ToString());
int start = tabStopObj.GetProperty("start").AsInt32;
int end = tabStopObj.GetProperty("end").AsInt32;
int group = tabStopObj.GetProperty("group").AsInt32;
retVal.TabStops[i] = new Range(start, end);
retVal.TabStopGroups[i] = group;
}
}
return(retVal);
}
