Reloading when there are modified buffers pops up a dialog.

Atom/src/AtomController.mm

@@ -85,7 +85,19 @@
 
 - (bool)keyEventOfType:(cef_handler_keyevent_type_t)type code:(int)code modifiers:(int)modifiers isSystemKey:(bool)isSystemKey isAfterJavaScript:(bool)isAfterJavaScript {  
   if (isAfterJavaScript && type == KEYEVENT_RAWKEYDOWN && modifiers == KEY_META && code == 'R') {
-    _clientHandler->GetBrowser()->ReloadIgnoreCache();
+    
+    CefRefPtr<CefV8Context> context = _clientHandler->GetBrowser()->GetMainFrame()->GetV8Context();
+    CefRefPtr<CefV8Value> global = context->GetGlobal();
+    
+    context->Enter();
+    CefRefPtr<CefV8Value> retval;
+    CefRefPtr<CefV8Exception> exception;
+    CefV8ValueList arguments;
+    global->GetValue("reload")->ExecuteFunction(global, arguments, retval, exception, true);
+    if (exception) _clientHandler->GetBrowser()->ReloadIgnoreCache();
+    context->Exit();
+    
+
     return YES;
   }
   

spec/app/window-spec.coffee

@@ -17,6 +17,20 @@ describe "Window", ->
       $(window).trigger 'close'
       expect(window.close).toHaveBeenCalled()
 
+  describe ".reload()", ->
+    it "returns false when no buffers are modified", ->
+      spyOn($native, "reload")
+      window.reload()
+      expect($native.reload).toHaveBeenCalled()
+
+    it "shows alert when a modifed buffer exists", ->
+      rootView.activeEditor().insertText("hi")
+      spyOn($native, "alert")
+      spyOn($native, "reload")
+      window.reload()
+      expect($native.reload).not.toHaveBeenCalled()
+      expect($native.alert).toHaveBeenCalled()
+
   describe "requireStylesheet(path)", ->
     it "synchronously loads the stylesheet at the given path and installs a style tag for it in the head", ->
       $('head style[path*="atom.css"]').remove()

src/app/window.coffee

@@ -1,6 +1,7 @@
 # This a weirdo file. We don't create a Window class, we just add stuff to
 # the DOM window.
 
+Native = require 'native'
 fs = require 'fs'
 _ = require 'underscore'
 $ = require 'jquery'
@@ -60,6 +61,20 @@ windowAdditions =
     return if $("head style[path='#{fullPath}']").length
     $('head').append "<style path='#{fullPath}'>#{content}</style>"
 
+  reload: ->
+    console.log rootView.modifiedBuffers()
+    if rootView.modifiedBuffers().length > 0
+      message = "There are unsaved buffers, reload anyway?"
+      detailedMessage = "You will lose all unsaved changes if you reload"
+      buttons = [
+        ["Reload", -> Native.reload()]
+        ["Cancel", ->]
+      ]
+
+      Native.alert(message, detailedMessage, buttons)
+    else
+      Native.reload()
+
   showConsole: ->
     $native.showDevTools()