Bring window to front when opening already opened path

Closes #104

native/atom_application.mm

@@ -128,6 +128,19 @@
 }
 
 - (void)open:(NSString *)path {
+  NSArray *windows = [NSApp windows];
+  int count = [windows count];
+  for (int i = 0; i < count; i++) {
+    NSWindow *window = [windows objectAtIndex:i];
+    if ([window isVisible] && ![window isExcludedFromWindowsMenu]) {
+      AtomWindowController *controller = [window windowController];
+      if ([path isEqualToString:controller.pathToOpen]) {
+        [window makeKeyAndOrderFront:nil];
+        return;
+      }
+    }
+  }
+
   [[AtomWindowController alloc] initWithPath:path];
 }
 

native/atom_window_controller.h

@@ -21,6 +21,7 @@ class AtomCefClient;
 @property (nonatomic, retain) IBOutlet NSSplitView *splitView;
 @property (nonatomic, retain) IBOutlet NSView *webView;
 @property (nonatomic, retain) IBOutlet NSView *devToolsView;
+@property (nonatomic, retain) NSString *pathToOpen;
 
 - (id)initWithPath:(NSString *)path;
 - (id)initUnstableWithPath:(NSString *)path;

native/atom_window_controller.mm

@@ -9,6 +9,7 @@
 @synthesize splitView=_splitView;
 @synthesize webView=_webView;
 @synthesize devToolsView=_devToolsView;
+@synthesize pathToOpen=_pathToOpen;
 
 - (void)dealloc {
   [_splitView release];
@@ -17,7 +18,7 @@
   [_bootstrapScript release];
   [_resourcePath release];
   [_pathToOpen release];
-  
+
   _cefClient = NULL;
   _cefDevToolsClient = NULL;