Merge 41114 - [Mac] More progress towards resizing the Browser Actions contai...

chrome/browser/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_COCOA_EXTENSIONS_BROWSER_ACTIONS_CONTAINER_VIEW_
+#define CHROME_BROWSER_COCOA_EXTENSIONS_BROWSER_ACTIONS_CONTAINER_VIEW_
+
 #import <Cocoa/Cocoa.h>
 
 @class BrowserActionButton;
 
+// Sent when a user-initiated drag to resize the container is initiated.
+extern const NSString* kBrowserActionGrippyDragStartedNotification;
+
+// Sent when a user-initiated drag is resizing the container.
+extern const NSString* kBrowserActionGrippyDraggingNotification;
+
+// Sent when a user-initiated drag to resize the container has finished.
+extern const NSString* kBrowserActionGrippyDragFinishedNotification;
+
+// 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_;
+
   // Whether there is a border to the right of the last Browser Action.
   BOOL rightBorderShown_;
+
+  // Whether the container is currently being resized by the user.
+  BOOL userIsResizing_;
+
+  // 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_;
 }
 
+// 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 (visible) button at the given index in the view's hierarchy.
 - (BrowserActionButton*)buttonAtIndex:(NSUInteger)index;
 
+// 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;
+
+@property(nonatomic) BOOL canDragLeft;
+@property(nonatomic) BOOL canDragRight;
+@property(nonatomic) BOOL grippyPinned;
+@property(readonly, nonatomic) BOOL userIsResizing;
 @property(nonatomic) BOOL rightBorderShown;
 
 @end
+
+#endif  // CHROME_BROWSER_COCOA_EXTENSIONS_BROWSER_ACTIONS_CONTAINER_VIEW_