Mac. Build bookmark tooltips more intelligently, not showing title if same as URL.

Refactor tooltip string code to remove duplication.
R=mrossetti@chromium.org
BUG=70709
Review URL: http://codereview.chromium.org/6979021

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@86753 0039d316-1c4b-4281-b951-d872f2087c98

chrome/browser/ui/cocoa/bookmarks/bookmark_bar_controller.h

@@ -349,7 +349,8 @@ willAnimateFromState:(bookmarks::VisualState)oldState
 // Or from a context menu over either the bar or a button.
 - (IBAction)addPage:(id)sender;
 - (IBAction)addFolder:(id)sender;
-
+// Make a relevant tooltip string for node.
+- (NSString*)tooltipForNode:(const BookmarkNode*)node;
 @end
 
 // Redirects from BookmarkBarBridge, the C++ object which glues us to

chrome/browser/ui/cocoa/bookmarks/bookmark_bar_controller.mm

@@ -1145,14 +1145,8 @@ void RecordAppLaunch(Profile* profile, GURL url) {
     [item setTarget:self];
     [item setAction:@selector(openBookmarkMenuItem:)];
     [item setTag:[self menuTagFromNodeId:child->id()]];
-    if (child->is_url()) {
-      // Add a tooltip
-      std::string url_string = child->GetURL().possibly_invalid_spec();
-      NSString* tooltip = [NSString stringWithFormat:@"%@\n%s",
-                           base::SysUTF16ToNSString(child->GetTitle()),
-                           url_string.c_str()];
-      [item setToolTip:tooltip];
-    }
+    if (child->is_url())
+      [item setToolTip:[self tooltipForNode:child]];
   }
 }
 
@@ -1232,6 +1226,18 @@ void RecordAppLaunch(Profile* profile, GURL url) {
   }
 }
 
+- (NSString*)tooltipForNode:(const BookmarkNode*)node {
+  NSString* title = base::SysUTF16ToNSString(node->GetTitle());
+  std::string url_string = node->GetURL().possibly_invalid_spec();
+  NSString* url = [NSString stringWithUTF8String:url_string.c_str()];
+  if ([title length] == 0)
+    return url;
+  else if ([url length] == 0 || [url isEqualToString:title])
+    return title;
+  else
+    return [NSString stringWithFormat:@"%@\n%@", title, url];
+}
+
 - (BookmarkButton*)buttonForNode:(const BookmarkNode*)node
                          xOffset:(int*)xOffset {
   BookmarkButtonCell* cell = [self cellForBookmarkNode:node];
@@ -1271,14 +1277,8 @@ void RecordAppLaunch(Profile* profile, GURL url) {
     // Make the button do something
     [button setTarget:self];
     [button setAction:@selector(openBookmark:)];
-    if (node->is_url()) {
-      // Add a tooltip.
-      NSString* title = base::SysUTF16ToNSString(node->GetTitle());
-      std::string url_string = node->GetURL().possibly_invalid_spec();
-      NSString* tooltip = [NSString stringWithFormat:@"%@\n%s", title,
-                           url_string.c_str()];
-      [button setToolTip:tooltip];
-    }
+    if (node->is_url())
+      [button setToolTip:[self tooltipForNode:node]];
   }
   return [[button.get() retain] autorelease];
 }

chrome/browser/ui/cocoa/bookmarks/bookmark_bar_folder_controller.mm

@@ -389,11 +389,7 @@ struct LayoutMetrics {
       [button setTarget:self];
       [button setAction:@selector(openBookmark:)];
       // Add a tooltip.
-      NSString* title = base::SysUTF16ToNSString(node->GetTitle());
-      std::string urlString = node->GetURL().possibly_invalid_spec();
-      NSString* tooltip = [NSString stringWithFormat:@"%@\n%s", title,
-                                    urlString.c_str()];
-      [button setToolTip:tooltip];
+      [button setToolTip:[barController_ tooltipForNode:node]];
       [button setAcceptsTrackIn:YES];
     }
   } else {