diff --git a/AppKit/CPButtonBar.j b/AppKit/CPButtonBar.j
index 1f63473de..01aa1d833 100644
--- a/AppKit/CPButtonBar.j
+++ b/AppKit/CPButtonBar.j
@@ -14,7 +14,7 @@
 + (id)plusButton
 {
     var button = [[CPButton alloc] initWithFrame:CGRectMake(0, 0, 35, 25)],
-        image = [[CPImage alloc] initWithContentsOfFile:[[CPBundle bundleForClass:self] pathForResource:@"plus_button.png"] size:CGSizeMake(11, 12)];
+        image = [[CPImage alloc] initWithContentsOfFile:[[CPBundle bundleForClass:[CPButtonBar class]] pathForResource:@"plus_button.png"] size:CGSizeMake(11, 12)];
 
     [button setBordered:NO];
     [button setImage:image];
@@ -26,7 +26,7 @@
 + (id)minusButton
 {
     var button = [[CPButton alloc] initWithFrame:CGRectMake(0, 0, 35, 25)],
-        image = [[CPImage alloc] initWithContentsOfFile:[[CPBundle bundleForClass:self] pathForResource:@"minus_button.png"] size:CGSizeMake(11, 4)];
+        image = [[CPImage alloc] initWithContentsOfFile:[[CPBundle bundleForClass:[CPButtonBar class]] pathForResource:@"minus_button.png"] size:CGSizeMake(11, 4)];
 
     [button setBordered:NO];
     [button setImage:image];
@@ -35,6 +35,21 @@
     return button;
 }
 
++ (id)actionPopupButton
+{
+    var button = [[CPPopUpButton alloc] initWithFrame:CGRectMake(0, 0, 35, 25)],
+        image = [[CPImage alloc] initWithContentsOfFile:[[CPBundle bundleForClass:[CPButtonBar class]] pathForResource:@"action_button.png"] size:CGSizeMake(22, 14)];
+
+    [button addItemWithTitle:nil];
+    [[button lastItem] setImage:image];
+    [button setImagePosition:CPImageOnly];
+    [button setValue:CGInsetMake(0, 0, 0, 0) forThemeAttribute:"content-inset"];
+
+    [button setPullsDown:YES];
+
+    return button;
+}
+
 + (CPString)themeClass
 {
     return @"button-bar";
@@ -174,13 +189,23 @@
             [buttonsNotHidden removeObject:buttonsNotHidden[count]];
 
     var currentButtonOffset = _resizeControlIsLeftAligned ? CGRectGetMaxX([self bounds]) + 1 : -1,
-        height = CGRectGetHeight([self bounds]) - 1;
+        bounds = [self bounds],
+        height = CGRectGetHeight(bounds) - 1,
+        frameWidth = CGRectGetWidth(bounds),
+        resizeRect = _hasResizeControl ? [self rectForEphemeralSubviewNamed:"resize-control-view"] : CGRectMakeZero(),
+        resizeWidth = CGRectGetWidth(resizeRect),
+        availableWidth = frameWidth - resizeWidth - 1;
 
     for (var i = 0, count = [buttonsNotHidden count]; i < count; i++)
     {   
         var button = buttonsNotHidden[i],
             width = CGRectGetWidth([button frame]);
 
+        if (availableWidth > width)
+            availableWidth -=width;
+        else
+            break;
+
         if (_resizeControlIsLeftAligned)
         {
             [button setFrame:CGRectMake(currentButtonOffset - width, 1, width, height)];
@@ -216,6 +241,12 @@
     }
 }
 
+- (void)setFrameSize:(CGSize)aSize
+{
+    [super setFrameSize:aSize];
+    [self setNeedsLayout];
+}
+
 @end
 
 var CPButtonBarHasResizeControlKey = @"CPButtonBarHasResizeControlKey",
diff --git a/AppKit/Resources/action_button.png b/AppKit/Resources/action_button.png
new file mode 100644
index 000000000..2af0dfc48
Binary files /dev/null and b/AppKit/Resources/action_button.png differ
diff --git a/AppKit/Themes/Aristo/ThemeDescriptors.j b/AppKit/Themes/Aristo/ThemeDescriptors.j
index c091aa8d8..adc445107 100644
--- a/AppKit/Themes/Aristo/ThemeDescriptors.j
+++ b/AppKit/Themes/Aristo/ThemeDescriptors.j
@@ -721,7 +721,7 @@
 
 + (CPButtonBar)themedButtonBar
 {
-    var buttonBar = [[CPButtonBar alloc] initWithFrame:CGRectMake(0.0, 0.0, 140.0, 26.0)],
+    var buttonBar = [[CPButtonBar alloc] initWithFrame:CGRectMake(0.0, 0.0, 147.0, 26.0)],
         color = [CPColor colorWithPatternImage:[_CPCibCustomResource imageResourceWithName:"buttonbar-bezel.png" size:CGSizeMake(1.0, 26.0)]];
 
     [buttonBar setHasResizeControl:YES];
@@ -763,7 +763,11 @@
     [buttonBar setValue:buttonBezelDisabledColor forThemeAttribute:@"button-bezel-color" inState:CPThemeStateDisabled];
     [buttonBar setValue:[CPColor blackColor] forThemeAttribute:@"button-text-color"];
 
-    [buttonBar setButtons:[[CPButtonBar plusButton], [CPButtonBar minusButton], [self themedPullDownMenu]]];
+    var popup = [CPButtonBar actionPopupButton];
+    [popup addItemWithTitle:"Item 1"];
+    [popup addItemWithTitle:"Item 2"];
+
+    [buttonBar setButtons:[[CPButtonBar plusButton], [CPButtonBar minusButton], popup]];
 
     return buttonBar;
 }