Backed out changeset 1d664865e8e2 (bug 1302470)

--HG--
extra : rebase_source : 01a2d19ca9bef74f9fc8d8d69f5a06b0c0d1449c

toolkit/components/typeaheadfind/nsTypeAheadFind.cpp

@@ -1210,22 +1210,22 @@ nsTypeAheadFind::IsRangeVisible(nsIPresShell *aPresShell,
     return false;
 
   nsIFrame *frame = content->GetPrimaryFrame();
-  if (!frame) {
+  if (!frame)    
     return false;  // No frame! Not visible then.
-  }
 
-  if (!frame->StyleVisibility()->IsVisible()) {
+  if (!frame->StyleVisibility()->IsVisible())
     return false;
-  }
 
   // Detect if we are _inside_ a text control, or something else with its own
   // selection controller.
   if (aUsesIndependentSelection) {
-    *aUsesIndependentSelection =
+    *aUsesIndependentSelection = 
       (frame->GetStateBits() & NS_FRAME_INDEPENDENT_SELECTION);
   }
 
   // ---- We have a frame ----
+  if (!aMustBeInViewPort)   
+    return true; //  Don't need it to be on screen, just in rendering tree
 
   // Get the next in flow frame that contains the range start
   int32_t startRangeOffset, startFrameOffset, endFrameOffset;
@@ -1259,22 +1259,12 @@ nsTypeAheadFind::IsRangeVisible(nsIPresShell *aPresShell,
                                     minDistance);
 
     if (rectVisibility != nsRectVisibility_kAboveViewport) {
-      // This is an early exit case, where we return true iff the range
-      // is actually rendered.
-      return IsRangeRendered(aPresShell, aPresContext, aRange);
+      return true;
     }
   }
 
-  // Below this point, we know the range is not in the viewport.
-
-  if (!aMustBeInViewPort) {
-    // This is an early exit case because we don't care that that range
-    // is out of viewport, so we return that the range is "visible".
-    return true;
-  }
-
-  // The range isn't in the viewport, but we could scroll it into view.
-  // Move range forward to first visible point,
+  // We know that the target range isn't usable because it's not in the
+  // view port. Move range forward to first visible point,
   // this speeds us up a lot in long documents
   nsCOMPtr<nsIFrameEnumerator> frameTraversal;
   nsCOMPtr<nsIFrameTraversal> trav(do_CreateInstance(kFrameTraversalCID));
@@ -1288,9 +1278,8 @@ nsTypeAheadFind::IsRangeVisible(nsIPresShell *aPresShell,
                             false  // aSkipPopupChecks
                             );
 
-  if (!frameTraversal) {
+  if (!frameTraversal)
     return false;
-  }
 
   while (rectVisibility == nsRectVisibility_kAboveViewport) {
     frameTraversal->Next();