internal void SetNext(ProjectChangeHandler next)
{
_next = next;
}
/// <summary>
/// Starts watching project directory for changes.
/// </summary>
/// <exception cref="InvalidOperationException">
/// Indicates that project directory contains no resource supported for watching.
/// </exception>
public void StartWatching()
{
ProjectChangeHandler.Initialize(_domain);
Dictionary<string, string> config = new Dictionary<string, string>();
string binaries = Path.Combine(_dir, @"bin");
if (Directory.Exists(binaries))
config.Add("*.dll", binaries);
string styles = Path.Combine(_dir, @"css");
if (Directory.Exists(styles))
config.Add(@"*.scss", styles);
string scripts = Path.Combine(_dir, @"js");
if (Directory.Exists(scripts))
{
config.Add(@"*.js", scripts);
config.Add(@"*.ts", scripts);
}
string views = Path.Combine(_dir, @"Views");
if (Directory.Exists(views))
config.Add(@"*.cshtml", views);
if (config.Count == 0)
throw new InvalidOperationException(
"No resource supported for watching found in project directory.");
_watcher = new CompositeFileSystemWatcher(config, OnChanged);
_watcher.BeginMonitoring();
Trace.TraceInformation("WebSync started watching for changes in {0}", _dir);
// Using chain of responsibility pattern to manage change notification handlers.
ProjectChangeHandler lastHandler = null;
if (_typescript)
{
_chain = new TypeScriptChangeHandler(Path.Combine(_dir, "Web.csproj"));
lastHandler = _chain;
}
if (_sass)
{
var sassHandler = new SassChangeHandler(_dir);
if (null == _chain)
_chain = sassHandler;
else
{
lastHandler.SetNext(sassHandler);
lastHandler = sassHandler;
}
}
DefaultChangeHandler defaultHandler = new DefaultChangeHandler();
if (null == _chain)
_chain = defaultHandler;
else
lastHandler.SetNext(defaultHandler);
}