From 7b9ea72f65dda28822c5a9054dff850f8ced6944 Mon Sep 17 00:00:00 2001
From: "Carsten \"Tomcat\" Book" <cbook@mozilla.com>
Date: Fri, 21 Apr 2017 17:10:46 +0200
Subject: [PATCH] Backed out changeset 87ae43ab52ed (bug 1302470)

--HG--
extra : rebase_source : 65f6245418155127ecc6ffc9c8347086db78cd4c
---
 .../typeaheadfind/nsITypeAheadFind.idl        |  5 +-
 .../typeaheadfind/nsTypeAheadFind.cpp         | 80 -------------------
 .../typeaheadfind/nsTypeAheadFind.h           |  6 +-
 3 files changed, 3 insertions(+), 88 deletions(-)

diff --git a/toolkit/components/typeaheadfind/nsITypeAheadFind.idl b/toolkit/components/typeaheadfind/nsITypeAheadFind.idl
index 0d4c7f93e294..379d2c2a261e 100644
--- a/toolkit/components/typeaheadfind/nsITypeAheadFind.idl
+++ b/toolkit/components/typeaheadfind/nsITypeAheadFind.idl
@@ -57,12 +57,9 @@ interface nsITypeAheadFind : nsISupports
    * necessarily happen automatically. */
   void collapseSelection();
 
-  /* Check if a range is visible using heuristics */
+  /* Check if a range is visible */
   boolean isRangeVisible(in nsIDOMRange aRange, in boolean aMustBeInViewPort);
 
-  /* Check if a range is actually rendered (out of viewport always false) */
-  boolean isRangeRendered(in nsIDOMRange aRange);
-
   /******************************* Attributes ******************************/
 
   readonly attribute AString searchString;
diff --git a/toolkit/components/typeaheadfind/nsTypeAheadFind.cpp b/toolkit/components/typeaheadfind/nsTypeAheadFind.cpp
index 883d7628d42c..083feffc2ff0 100644
--- a/toolkit/components/typeaheadfind/nsTypeAheadFind.cpp
+++ b/toolkit/components/typeaheadfind/nsTypeAheadFind.cpp
@@ -1308,86 +1308,6 @@ nsTypeAheadFind::IsRangeVisible(nsIPresShell *aPresShell,
   return false;
 }
 
-NS_IMETHODIMP
-nsTypeAheadFind::IsRangeRendered(nsIDOMRange *aRange,
-                                bool *aResult)
-{
-  // Jump through hoops to extract the docShell from the range.
-  nsCOMPtr<nsIDOMNode> node;
-  aRange->GetStartContainer(getter_AddRefs(node));
-  nsCOMPtr<nsIDOMDocument> document;
-  node->GetOwnerDocument(getter_AddRefs(document));
-  nsCOMPtr<mozIDOMWindowProxy> window;
-  document->GetDefaultView(getter_AddRefs(window));
-  nsCOMPtr<nsIWebNavigation> navNav (do_GetInterface(window));
-  nsCOMPtr<nsIDocShell> docShell (do_GetInterface(navNav));
-
-  // Set up the arguments needed to check if a range is visible.
-  nsCOMPtr<nsIPresShell> presShell (docShell->GetPresShell());
-  RefPtr<nsPresContext> presContext = presShell->GetPresContext();
-  *aResult = IsRangeRendered(presShell, presContext, aRange);
-  return NS_OK;
-}
-
-bool
-nsTypeAheadFind::IsRangeRendered(nsIPresShell *aPresShell,
-                                 nsPresContext *aPresContext,
-                                 nsIDOMRange *aRange)
-{
-  NS_ASSERTION(aPresShell && aPresContext && aRange,
-               "params are invalid");
-
-  nsCOMPtr<nsIDOMNode> node;
-  aRange->GetCommonAncestorContainer(getter_AddRefs(node));
-
-  nsCOMPtr<nsIContent> content(do_QueryInterface(node));
-  if (!content) {
-    return false;
-  }
-
-  nsIFrame *frame = content->GetPrimaryFrame();
-  if (!frame) {
-    return false;  // No frame! Not visible then.
-  }
-
-  if (!frame->StyleVisibility()->IsVisible()) {
-    return false;
-  }
-
-  // Having a primary frame doesn't mean that the range is visible inside the
-  // viewport. Do a hit-test to determine that quickly and properly.
-  AutoTArray<nsIFrame*,8> frames;
-  nsIFrame *rootFrame = aPresShell->GetRootFrame();
-  RefPtr<nsRange> range = static_cast<nsRange*>(aRange);
-  RefPtr<mozilla::dom::DOMRectList> rects = range->GetClientRects(true, false);
-  for (uint32_t i = 0; i < rects->Length(); ++i) {
-    RefPtr<mozilla::dom::DOMRect> rect = rects->Item(i);
-    nsRect r(nsPresContext::CSSPixelsToAppUnits((float)rect->X()),
-             nsPresContext::CSSPixelsToAppUnits((float)rect->Y()),
-             nsPresContext::CSSPixelsToAppUnits((float)rect->Width()),
-             nsPresContext::CSSPixelsToAppUnits((float)rect->Height()));
-    // Append visible frames to frames array.
-    nsLayoutUtils::GetFramesForArea(rootFrame, r, frames,
-      nsLayoutUtils::IGNORE_PAINT_SUPPRESSION |
-      nsLayoutUtils::IGNORE_ROOT_SCROLL_FRAME |
-      nsLayoutUtils::ONLY_VISIBLE);
-
-    // See if any of the frames contain the content. If they do, then the range
-    // is visible. We search for the content rather than the original frame,
-    // because nsTextContinuation frames might be returned instead of the
-    // original frame.
-    for (const auto &f: frames) {
-      if (f->GetContent() == content) {
-        return true;
-      }
-    }
-
-    frames.ClearAndRetainStorage();
-  }
-
-  return false;
-}
-
 already_AddRefed<nsIPresShell>
 nsTypeAheadFind::GetPresShell()
 {
diff --git a/toolkit/components/typeaheadfind/nsTypeAheadFind.h b/toolkit/components/typeaheadfind/nsTypeAheadFind.h
index d12fc3e38bd7..2caf0b69cc72 100644
--- a/toolkit/components/typeaheadfind/nsTypeAheadFind.h
+++ b/toolkit/components/typeaheadfind/nsTypeAheadFind.h
@@ -48,10 +48,10 @@ protected:
   nsresult GetWebBrowserFind(nsIDocShell *aDocShell,
                              nsIWebBrowserFind **aWebBrowserFind);
 
-  void RangeStartsInsideLink(nsIDOMRange *aRange, nsIPresShell *aPresShell,
+  void RangeStartsInsideLink(nsIDOMRange *aRange, nsIPresShell *aPresShell, 
                              bool *aIsInsideLink, bool *aIsStartingLink);
 
-  void GetSelection(nsIPresShell *aPresShell, nsISelectionController **aSelCon,
+  void GetSelection(nsIPresShell *aPresShell, nsISelectionController **aSelCon, 
                     nsISelection **aDomSel);
   // *aNewRange may not be collapsed.  If you want to collapse it in a
   // particular way, you need to do it yourself.
@@ -59,8 +59,6 @@ protected:
                         nsIDOMRange *aRange, bool aMustBeVisible, 
                         bool aGetTopVisibleLeaf, nsIDOMRange **aNewRange,
                         bool *aUsesIndependentSelection);
-  bool IsRangeRendered(nsIPresShell *aPresShell, nsPresContext *aPresContext,
-                          nsIDOMRange *aRange);
   nsresult FindItNow(nsIPresShell *aPresShell, bool aIsLinksOnly,
                      bool aIsFirstVisiblePreferred, bool aFindPrev,
                      uint16_t* aResult);