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