o Updates the browser action buttons when a tab is changed. This is needed for tab-specific browser action buttons.

o If a tooltip is not present on a browser action button, clear the tooltip of the button.

BUG=28719
TEST=Load chrome/test/data/extensions/api_test/browser_tab_specific_state, play around with it in different tabs and make sure that the state remains the same per tab.
Review URL: http://codereview.chromium.org/434047

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@32980 0039d316-1c4b-4281-b951-d872f2087c98

2 files changed, 13 insertions, 1 deletions

diff --git a/chrome/browser/cocoa/extensions/browser_actions_controller.h b/chrome/browser/cocoa/extensions/browser_actions_controller.h
index 08734bb..cbdc28f 100644
--- a/chrome/browser/cocoa/extensions/browser_actions_controller.h
+++ b/chrome/browser/cocoa/extensions/browser_actions_controller.h
@@ -57,6 +57,9 @@ extern NSString* const kBrowserActionsChangedNotification;
 // extensions service to the toolbar.
 - (void)createButtons;
 
+// Update the display of all buttons.
+- (void)update;
+
 // Hides the browser action's popup menu (if one is present and visible).
 - (void)hidePopup;
 
diff --git a/chrome/browser/cocoa/extensions/browser_actions_controller.mm b/chrome/browser/cocoa/extensions/browser_actions_controller.mm
index 5414c27..6dacbe0 100644
--- a/chrome/browser/cocoa/extensions/browser_actions_controller.mm
+++ b/chrome/browser/cocoa/extensions/browser_actions_controller.mm
@@ -214,8 +214,11 @@ class ExtensionImageTrackerBridge : public NotificationObserver,
     return;
 
   std::string tooltip = extension_->browser_action()->GetTitle(tabId);
-  if (!tooltip.empty())
+  if (tooltip.empty()) {
+    [self setToolTip:nil];
+  } else {
     [self setToolTip:base::SysUTF8ToNSString(tooltip)];
+  }
 
   SkBitmap image = extension_->browser_action()->GetIcon(tabId);
   if (!image.isNull()) {
@@ -318,6 +321,12 @@ class ExtensionsServiceObserverBridge : public NotificationObserver {
   return self;
 }
 
+- (void)update {
+  for (BrowserActionButton* button in [buttons_ allValues]) {
+    [button updateState];
+  }
+}
+
 - (void)hidePopup {
   [popupController_ close];
   popupController_ = nil;