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      1 // Copyright (c) 2011 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_EXTENSIONS_BROWSER_ACTION_BUTTON_H_
      6 #define CHROME_BROWSER_UI_COCOA_EXTENSIONS_BROWSER_ACTION_BUTTON_H_
      7 #pragma once
      8 
      9 #import <Cocoa/Cocoa.h>
     10 
     11 #import "base/memory/scoped_nsobject.h"
     12 #include "base/memory/scoped_ptr.h"
     13 #import "chrome/browser/ui/cocoa/gradient_button_cell.h"
     14 
     15 class Extension;
     16 class ExtensionAction;
     17 class ExtensionImageTrackerBridge;
     18 class Profile;
     19 
     20 // Fired when the Browser Action's state has changed. Usually the image needs to
     21 // be updated.
     22 extern NSString* const kBrowserActionButtonUpdatedNotification;
     23 
     24 // Fired on each drag event while the user is moving the button.
     25 extern NSString* const kBrowserActionButtonDraggingNotification;
     26 // Fired when the user drops the button.
     27 extern NSString* const kBrowserActionButtonDragEndNotification;
     28 
     29 @interface BrowserActionButton : NSButton {
     30  @private
     31   // Bridge to proxy Chrome notifications to the Obj-C class as well as load the
     32   // extension's icon.
     33   scoped_ptr<ExtensionImageTrackerBridge> imageLoadingBridge_;
     34 
     35   // The default icon of the Button.
     36   scoped_nsobject<NSImage> defaultIcon_;
     37 
     38   // The icon specific to the active tab.
     39   scoped_nsobject<NSImage> tabSpecificIcon_;
     40 
     41   // Used to move the button and query whether a button is currently animating.
     42   scoped_nsobject<NSViewAnimation> moveAnimation_;
     43 
     44   // The extension for this button. Weak.
     45   const Extension* extension_;
     46 
     47   // The ID of the active tab.
     48   int tabId_;
     49 
     50   // Whether the button is currently being dragged.
     51   BOOL isBeingDragged_;
     52 
     53   // Drag events could be intercepted by other buttons, so to make sure that
     54   // this is the only button moving if it ends up being dragged. This is set to
     55   // YES upon |mouseDown:|.
     56   BOOL dragCouldStart_;
     57 }
     58 
     59 - (id)initWithFrame:(NSRect)frame
     60           extension:(const Extension*)extension
     61             profile:(Profile*)profile
     62               tabId:(int)tabId;
     63 
     64 - (void)setFrame:(NSRect)frameRect animate:(BOOL)animate;
     65 
     66 - (void)setDefaultIcon:(NSImage*)image;
     67 
     68 - (void)setTabSpecificIcon:(NSImage*)image;
     69 
     70 - (void)updateState;
     71 
     72 - (BOOL)isAnimating;
     73 
     74 // Returns a pointer to an autoreleased NSImage with the badge, shadow and
     75 // cell image drawn into it.
     76 - (NSImage*)compositedImage;
     77 
     78 @property(readonly, nonatomic) BOOL isBeingDragged;
     79 @property(readonly, nonatomic) const Extension* extension;
     80 @property(readwrite, nonatomic) int tabId;
     81 
     82 @end
     83 
     84 @interface BrowserActionCell : GradientButtonCell {
     85  @private
     86   // The current tab ID used when drawing the cell.
     87   int tabId_;
     88 
     89   // The action we're drawing the cell for. Weak.
     90   ExtensionAction* extensionAction_;
     91 }
     92 
     93 @property(readwrite, nonatomic) int tabId;
     94 @property(readwrite, nonatomic) ExtensionAction* extensionAction;
     95 
     96 @end
     97 
     98 #endif  // CHROME_BROWSER_UI_COCOA_EXTENSIONS_BROWSER_ACTION_BUTTON_H_
     99