Experiment with async callbacks from js

Atom/Classes/AtomController.h

@@ -20,4 +20,7 @@ struct JSGlobalContextRef;
 - (JSValueRefAndContextRef)jsWindow;
 - (void)performActionForMenuItemPath:(NSString *)menuItemPath;
 
+- (void)contentsOfDirectoryAtPath:(NSString *)path onComplete:(JSValueRefAndContextRef)jsFunction;
+
+
 @end

Atom/Classes/AtomController.m

@@ -3,6 +3,7 @@
 
 #import "JSCocoa.h"
 #import <WebKit/WebKit.h>
+#import <dispatch/dispatch.h>
 
 @interface AtomController ()
 @property (nonatomic, retain) JSCocoa *jscocoa;
@@ -108,6 +109,7 @@
 }
 
 - (void)performActionForMenuItemPath:(NSString *)menuItemPath {
+  
   NSString *jsCode = [NSString stringWithFormat:@"window.performActionForMenuItemPath('%@')", menuItemPath];
   [self.jscocoa evalJSString:jsCode];
 }
@@ -118,6 +120,34 @@
   return windowWithContext;
 }
 
+- (void)contentsOfDirectoryAtPath:(NSString *)path onComplete:(JSValueRefAndContextRef)jsFunction {
+  dispatch_queue_t backgroundQueue = dispatch_get_global_queue(0, 0);
+  dispatch_queue_t mainQueue = dispatch_get_main_queue();
+    
+  JSValueProtect(jsFunction.ctx, jsFunction.value);
+  NSLog(@"start %@", [NSThread currentThread]);  
+  dispatch_async(backgroundQueue, ^{
+    NSLog(@"back %@", [NSThread currentThread]);
+    [NSThread sleepForTimeInterval:2];
+
+    dispatch_sync(mainQueue, ^{
+      NSLog(@"main %@", [NSThread currentThread]);
+      NSLog(@"ran the block on main %p", jsFunction.value);      
+      [self.jscocoa callJSFunction:jsFunction.value withArguments:[NSArray arrayWithObject:@"testing"]];
+//      JSValueUnprotect(jsFunction.ctx, jsFunction.value);
+
+    });
+    
+    [NSThread sleepForTimeInterval:2];
+    
+    dispatch_sync(mainQueue, ^{
+      NSLog(@"main %@", [NSThread currentThread]);
+      NSLog(@"ran the block on main %p", jsFunction.value);      
+      [self.jscocoa callJSFunction:jsFunction.value withArguments:[NSArray arrayWithObject:@"testing 2"]];      
+    });
+  });
+}
+
 #pragma mark NSWindowDelegate
 - (BOOL)windowShouldClose:(id)sender {
   [self close];

src/atom/root-view.coffee

@@ -21,6 +21,10 @@ class RootView extends Template
 
   viewProperties:
     initialize: ->
+
+      fs.async.list '/foo', (result) ->
+        console.log(result.valueOf())
+
       @bindKey 'meta+s', => @editor.save()
       @bindKey 'meta+w', => window.close()
       @bindKey 'meta+t', => @toggleFileFinder()

src/stdlib/fs.coffee

@@ -95,3 +95,8 @@ module.exports =
   # Return the path name of the current working directory.
   workingDirectory: ->
     OSX.NSFileManager.defaultManager.currentDirectoryPath.toString()
+
+  async:
+    list: (path, callback) ->
+     $atomController.contentsOfDirectoryAtPath_onComplete(path, callback)
+