Preliminary work toward page actions on Mac.

chrome/browser/cocoa/autocomplete_text_field_cell.h

 // Copyright (c) 2009 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.
 
 #import <Cocoa/Cocoa.h>
 
 #import "chrome/browser/cocoa/styled_text_field_cell.h"
 
 #include "base/scoped_nsobject.h"
 #include "chrome/browser/cocoa/location_bar_view_mac.h"
@@ skipping 10 matching lines @@
   scoped_nsobject<NSAttributedString> keywordString_;
 
   // Set if there is a string to display as a hint on the right-hand
   // side of the field.  Exclusive WRT |keywordString_|;
   scoped_nsobject<NSAttributedString> hintString_;
 
   // View showing the state of the SSL connection. Owned by the location bar.
   // Display is exclusive WRT the |hintString_| and |keywordString_|.
   // This may be NULL during testing.
   LocationBarViewMac::SecurityImageView* security_image_view_;
+
+  // List of views showing visible Page Actions. Owned by the location bar.
+  // Display is exclusive WRT the |hintString_| and |keywordString_|.
+  // This may be NULL during testing.
+  LocationBarViewMac::PageActionViewList* page_action_views_;
 }
 
 // Chooses |partialString| if |width| won't fit |fullString|.  Strings
 // must be non-nil.
 - (void)setKeywordString:(NSString*)fullString
            partialString:(NSString*)partialString
           availableWidth:(CGFloat)width;
 
 // Chooses |anImage| only if all pieces won't fit w/in |width|.
 // Inputs must be non-nil.
 - (void)setKeywordHintPrefix:(NSString*)prefixString
                        image:(NSImage*)anImage
                       suffix:(NSString*)suffixString
               availableWidth:(CGFloat)width;
 
 // Suppresses hint entirely if |aString| won't fit w/in |width|.
 // String must be non-nil.
 - (void)setSearchHintString:(NSString*)aString
              availableWidth:(CGFloat)width;
 - (void)clearKeywordAndHint;
 
 - (void)setSecurityImageView:(LocationBarViewMac::SecurityImageView*)view;
+- (void)setPageActionViewList:(LocationBarViewMac::PageActionViewList*)list;
+
+// Returns the total number of installed Page Actions, visible or not.
+- (size_t)pageActionCount;
 
 // Called when the security icon is visible and clicked. Passed through to the
 // security_image_view_ to handle the click (i.e., show the page info dialog).
 - (void)onSecurityIconMousePressed;
 
-// Return the portion of the cell to use for displaying the security (SSL lock)
+// Returns the portion of the cell to use for displaying the security (SSL lock)
 // icon, leaving space for its label if any.
 - (NSRect)securityImageFrameForFrame:(NSRect)cellFrame;
 
+// Returns the portion of the cell to use for displaying the Page Action icon
+// at the given index. May be NSZeroRect if the index's action is not visible.
+- (NSRect)pageActionFrameForIndex:(size_t)index inFrame:(NSRect)cellFrame;
+
+// Called when the Page Action at the given index, whose icon is drawn in the
+// iconFrame, is visible and clicked. Passed through to the list of views to
+// handle the click.
+- (void)onPageActionMousePressedIn:(NSRect)iconFrame forIndex:(size_t)index;
+
 @end
 
 // Internal methods here exposed for unit testing.
 @interface AutocompleteTextFieldCell (UnitTesting)
 
 @property(readonly) NSAttributedString* keywordString;
 @property(readonly) NSAttributedString* hintString;
 @property(readonly) NSAttributedString* hintIconLabel;
 
 @end