Set a tooltip with the application name if hidden.

If Deskbar is set to hide application names show the application
name as a tooltip when you hover your mouse over the item.

* Style fixes.
* Save CountItems() into a variable outside the loop so that it only
  gets called once (micro-optimization/best-practice).
* Convert a for loop to a while loop that wasn't really being used
  used as a for loop anyway, the variables are declared and used
  outside the loop.

src/apps/deskbar/BarView.cpp

@@ -721,7 +721,7 @@ TBarView::DragStart()
 		if (fLastDragItem)
 			init_tracking_hook(fLastDragItem, NULL, NULL);
 
-		if (item) {
+		if (item != NULL) {
 			if (item == fLastDragItem)
 				return B_OK;
 

src/apps/deskbar/ExpandoMenuBar.cpp

@@ -390,18 +390,27 @@ TExpandoMenuBar::MouseDown(BPoint where)
 void
 TExpandoMenuBar::MouseMoved(BPoint where, uint32 code, const BMessage* message)
 {
-	if (!message) {
+	if (message == NULL) {
 		// force a cleanup
 		_FinishedDrag();
+
+		if (code == B_INSIDE_VIEW) {
+			// set the tooltip
+			TTeamMenuItem* item = TeamItemAtPoint(where);
+			if (item != NULL && !item->DrawLabel() && item->Name() != '\0')
+				SetToolTip(item->Name());
+		}
+
 		BMenuBar::MouseMoved(where, code, message);
 		return;
 	}
 
 	uint32 buttons;
-	if (!(Window()->CurrentMessage())
+	if (Window()->CurrentMessage() == NULL
 		|| Window()->CurrentMessage()->FindInt32("buttons", (int32*)&buttons)
-		< B_OK)
+			< B_OK) {
 		buttons = 0;
+	}
 
 	if (buttons == 0)
 		return;
@@ -426,7 +435,8 @@ TExpandoMenuBar::MouseMoved(BPoint where, uint32 code, const BMessage* message)
 		case B_INSIDE_VIEW:
 			if (fBarView->Dragging()) {
 				TTeamMenuItem* item = NULL;
-				for (int32 i = 0; i < CountItems(); i++) {
+				int32 itemCount = CountItems();
+				for (int32 i = 0; i < itemCount; i++) {
 					BMenuItem* _item = ItemAt(i);
 					if (_item->Frame().Contains(where)) {
 						item = dynamic_cast<TTeamMenuItem*>(_item);
@@ -552,16 +562,18 @@ TExpandoMenuBar::AddTeam(BList* team, BBitmap* icon, char* name,
 			firstApp++;
 		}
 
-		int32 count = CountItems(), i;
+		int32 i = firstApp;
-		for (i = firstApp; i < count; i++) {
+		int32 itemCount = CountItems();
+		while (i < itemCount) {
 			teamItem = dynamic_cast<TTeamMenuItem*>(ItemAt(i));
 			if (teamItem != NULL && strcasecmp(teamItem->Name(), name) > 0) {
 				AddItem(item, i);
 				break;
 			}
+			i++;
 		}
 		// was the item added to the list yet?
-		if (i == count)
+		if (i == itemCount)
 			AddItem(item);
 	} else
 		AddItem(item);

src/apps/deskbar/TeamMenuItem.cpp

@@ -170,6 +170,13 @@ TTeamMenuItem::SetOverrideSelected(bool selected)
 }
 
 
+bool
+TTeamMenuItem::DrawLabel() const
+{
+	return fDrawLabel;
+}
+
+
 void
 TTeamMenuItem::SetDrawLabel(bool drawLabel)
 {

src/apps/deskbar/TeamMenuItem.h

@@ -62,6 +62,8 @@ class TTeamMenuItem : public BMenuItem {
 		void SetOverrideWidth(float width);
 		void SetOverrideHeight(float height);
 		void SetOverrideSelected(bool selected);
+
+		bool DrawLabel() const;
 		void SetDrawLabel(bool drawLabel);
 
 		bool IsExpanded();