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      1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 #ifndef CHROME_BROWSER_UI_COCOA_LOCATION_BAR_ZOOM_DECORATION_H_
      6 #define CHROME_BROWSER_UI_COCOA_LOCATION_BAR_ZOOM_DECORATION_H_
      7 
      8 #import <Cocoa/Cocoa.h>
      9 
     10 #include "base/basictypes.h"
     11 #import "chrome/browser/ui/cocoa/browser/zoom_bubble_controller.h"
     12 #include "chrome/browser/ui/cocoa/location_bar/image_decoration.h"
     13 
     14 class LocationBarViewMac;
     15 @class ZoomBubbleController;
     16 class ZoomController;
     17 class ZoomDecorationTest;
     18 
     19 // Zoom icon at the end of the omnibox (close to page actions) when at a
     20 // non-standard zoom level.
     21 class ZoomDecoration : public ImageDecoration,
     22                        public ZoomBubbleControllerDelegate {
     23  public:
     24   explicit ZoomDecoration(LocationBarViewMac* owner);
     25   virtual ~ZoomDecoration();
     26 
     27   // Called when this decoration should show or hide itself in its most current
     28   // state.
     29   void Update(ZoomController* zoom_controller);
     30 
     31   // Shows the zoom bubble for this decoration. If |auto_close| is YES, then
     32   // the bubble will automatically close after a fixed period of time.
     33   void ShowBubble(BOOL auto_close);
     34 
     35   // Closes the zoom bubble.
     36   void CloseBubble();
     37 
     38  private:
     39   friend ZoomDecorationTest;
     40 
     41   bool IsAtDefaultZoom() const;
     42   bool ShouldShowDecoration() const;
     43 
     44   // LocationBarDecoration implementation.
     45   virtual bool AcceptsMousePress() OVERRIDE;
     46   virtual bool OnMousePressed(NSRect frame, NSPoint location) OVERRIDE;
     47   virtual NSString* GetToolTip() OVERRIDE;
     48   virtual NSPoint GetBubblePointInFrame(NSRect frame) OVERRIDE;
     49 
     50   // ZoomBubbleControllerDelegate implementation.
     51   virtual content::WebContents* GetWebContents() OVERRIDE;
     52   virtual void OnClose() OVERRIDE;
     53 
     54   // The control that owns this. Weak.
     55   LocationBarViewMac* owner_;
     56 
     57   // The bubble that this decoration shows. Weak, owns self.
     58   ZoomBubbleController* bubble_;
     59 
     60   // The string to show for a tooltip.
     61   base::scoped_nsobject<NSString> tooltip_;
     62 
     63   DISALLOW_COPY_AND_ASSIGN(ZoomDecoration);
     64 };
     65 
     66 #endif  // CHROME_BROWSER_UI_COCOA_LOCATION_BAR_ZOOM_DECORATION_H_
     67