Disable the stop button when the user is hovering it and the page finishes lo...

chrome/browser/cocoa/reload_button.mm

 // Copyright (c) 2010 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #import "chrome/browser/cocoa/reload_button.h"
 
 #include "base/nsimage_cache_mac.h"
 #include "chrome/app/chrome_dll_resource.h"
 #import "chrome/browser/cocoa/view_id_util.h"
 
@@ skipping 40 matching lines @@
   // Don't allow multi-clicks, because the user probably wouldn't ever
   // want to stop+reload or reload+stop.
   [self setIgnoresMultiClick:YES];
 }
 
 - (void)setIsLoading:(BOOL)isLoading force:(BOOL)force {
   pendingReloadMode_ = NO;
 
   // Can always transition to stop mode.  Only transition to reload
   // mode if forced or if the mouse isn't hovering.  Otherwise, note
-  // that reload mode is desired and make no change.
+  // that reload mode is desired and disable the button.
   if (isLoading) {
     [self setImage:nsimage_cache::ImageNamed(kStopImageName)];
     [self setTag:IDC_STOP];
+    [self setEnabled:YES];
   } else if (force || ![self isMouseInside]) {
     [self setImage:nsimage_cache::ImageNamed(kReloadImageName)];
     [self setTag:IDC_RELOAD];
+    [self setEnabled:YES];
   } else if ([self tag] == IDC_STOP) {
     pendingReloadMode_ = YES;
+    [self setEnabled:NO];
   }
 }
 
 - (BOOL)sendAction:(SEL)theAction to:(id)theTarget {
   if ([self tag] == IDC_STOP) {
     // The stop command won't be valid after the attempt to change
     // back to reload.  But it "worked", so short-circuit it.
     const BOOL ret =
         pendingReloadMode_ ? YES : [super sendAction:theAction to:theTarget];
 
@@ skipping 32 matching lines @@
 
 @end  // ReloadButton
 
 @implementation ReloadButton (Testing)
 
 - (NSTrackingArea*)trackingArea {
   return trackingArea_;
 }
 
 @end