[Toolbar UI Mac] Fix omnibox minimum width

chrome/browser/ui/cocoa/extensions/browser_actions_container_view.h

 // 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.
 
 #ifndef CHROME_BROWSER_UI_COCOA_EXTENSIONS_BROWSER_ACTIONS_CONTAINER_VIEW_
 #define CHROME_BROWSER_UI_COCOA_EXTENSIONS_BROWSER_ACTIONS_CONTAINER_VIEW_
 
 #import <Cocoa/Cocoa.h>
 
 #include "base/mac/scoped_nsobject.h"
 #import "ui/base/cocoa/tracking_area.h"
 
 // Sent when a user-initiated drag to resize the container is initiated.
 extern NSString* const kBrowserActionGrippyDragStartedNotification;
 
 // Sent when a user-initiated drag is resizing the container.
 extern NSString* const kBrowserActionGrippyDraggingNotification;
 
 // Sent when a user-initiated drag to resize the container has finished.
 extern NSString* const kBrowserActionGrippyDragFinishedNotification;
 
-// Sent before the dragging will resize the container.
-extern NSString* const kBrowserActionGrippyWillDragNotification;
-
 // Sent when the Browser Actions container view is about to animate.
 extern NSString* const kBrowserActionsContainerWillAnimate;
 
 // Sent when the mouse enters the browser actions container (if tracking is
 // enabled).
 extern NSString* const kBrowserActionsContainerMouseEntered;
 
 // Key which is used to notify the translation with delta.
 extern NSString* const kTranslationWithDelta;
 
+class BrowserActionsContainerViewSizeDelegate {
+ public:
+  virtual CGFloat GetMaxAllowedWidth() = 0;
+  virtual ~BrowserActionsContainerViewSizeDelegate() {}
+};
+
 // The view that encompasses the Browser Action buttons in the toolbar and
 // provides mechanisms for resizing.
 @interface BrowserActionsContainerView : NSView {
  @private
   // The frame encompasing the grippy used for resizing the container.
   NSRect grippyRect_;
 
   // Used to cache the original position within the container that initiated the
   // drag.
   NSPoint initialDragPoint_;
 
   // Used to cache the previous x-pos of the frame rect for resizing purposes.
   CGFloat lastXPos_;
 
-  // The maximum width of the container.
-  CGFloat maxWidth_;
+  // The maximum width the container could want; i.e., the width required to
+  // display all the icons.
+  CGFloat maxDesiredWidth_;
 
   // Whether the container is currently being resized by the user.
   BOOL userIsResizing_;
 
   // Whether the user can resize this at all. Resizing is disabled in incognito
   // mode since any changes done in incognito mode are not saved anyway, and
   // also to avoid a crash. http://crbug.com/42848
   BOOL resizable_;
 
   // Whether the user is allowed to drag the grippy to the left. NO if all
   // extensions are shown or the location bar has hit its minimum width (handled
   // within toolbar_controller.mm).
   BOOL canDragLeft_;
 
   // Whether the user is allowed to drag the grippy to the right. NO if all
   // extensions are hidden.
   BOOL canDragRight_;
 
   // When the left grippy is pinned, resizing the window has no effect on its
   // position. This prevents it from overlapping with other elements as well
   // as letting the container expand when the window is going from super small
   // to large.
   BOOL grippyPinned_;
 
   // A tracking area to receive mouseEntered events, if tracking is enabled.
   ui::ScopedCrTrackingArea trackingArea_;
 
+  // The size delegate, if any.
+  // Weak; delegate is responsible for adding/removing itself.
+  BrowserActionsContainerViewSizeDelegate* sizeDelegate_;
+
   base::scoped_nsobject<NSViewAnimation> resizeAnimation_;
 }
 
 // Sets whether or not tracking (for mouseEntered events) is enabled.
 - (void)setTrackingEnabled:(BOOL)enabled;
 
 // Resizes the container to the given ideal width, adjusting the |lastXPos_| so
 // that |resizeDeltaX| is accurate.
 - (void)resizeToWidth:(CGFloat)width animate:(BOOL)animate;
 
 // Returns the change in the x-pos of the frame rect during resizing. Meant to
 // be queried when a NSViewFrameDidChangeNotification is fired to determine
 // placement of surrounding elements.
 - (CGFloat)resizeDeltaX;
 
 // Returns the frame of the container after the running animation has finished.
 // If no animation is running, returns the container's current frame.
 - (NSRect)animationEndFrame;
 
 // Returns true if the view is animating.
 - (BOOL)isAnimating;
 
 // Stops any animation in progress.
 - (void)stopAnimation;
 
 @property(nonatomic) BOOL canDragLeft;
 @property(nonatomic) BOOL canDragRight;
 @property(nonatomic) BOOL grippyPinned;
 @property(nonatomic,getter=isResizable) BOOL resizable;
-@property(nonatomic) CGFloat maxWidth;
+@property(nonatomic) CGFloat maxDesiredWidth;
 @property(readonly, nonatomic) BOOL userIsResizing;
+@property(nonatomic) BrowserActionsContainerViewSizeDelegate* delegate;
 
 @end
 
 #endif  // CHROME_BROWSER_UI_COCOA_EXTENSIONS_BROWSER_ACTIONS_CONTAINER_VIEW_