1 files changed, 291 insertions, 0 deletions
diff --git a/layout/xul/nsRootBoxFrame.cpp b/layout/xul/nsRootBoxFrame.cpp
new file mode 100644
index 0000000000..fe41dce527
--- /dev/null
+++ b/layout/xul/nsRootBoxFrame.cpp
@@ -0,0 +1,291 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "nsHTMLParts.h"
+#include "nsStyleConsts.h"
+#include "nsGkAtoms.h"
+#include "nsIPresShell.h"
+#include "nsBoxFrame.h"
+#include "nsStackLayout.h"
+#include "nsIRootBox.h"
+#include "nsIContent.h"
+#include "nsXULTooltipListener.h"
+#include "nsFrameManager.h"
+#include "mozilla/BasicEvents.h"
+
+using namespace mozilla;
+
+// Interface IDs
+
+//#define DEBUG_REFLOW
+
+// static
+nsIRootBox*
+nsIRootBox::GetRootBox(nsIPresShell* aShell)
+{
+  if (!aShell) {
+    return nullptr;
+  }
+  nsIFrame* rootFrame = aShell->FrameManager()->GetRootFrame();
+  if (!rootFrame) {
+    return nullptr;
+  }
+
+  if (rootFrame) {
+    rootFrame = rootFrame->PrincipalChildList().FirstChild();
+  }
+
+  nsIRootBox* rootBox = do_QueryFrame(rootFrame);
+  return rootBox;
+}
+
+class nsRootBoxFrame : public nsBoxFrame, public nsIRootBox {
+public:
+
+  friend nsIFrame* NS_NewBoxFrame(nsIPresShell* aPresShell, nsStyleContext* aContext);
+
+  explicit nsRootBoxFrame(nsStyleContext* aContext);
+
+  NS_DECL_QUERYFRAME
+  NS_DECL_FRAMEARENA_HELPERS
+
+  virtual nsPopupSetFrame* GetPopupSetFrame() override;
+  virtual void SetPopupSetFrame(nsPopupSetFrame* aPopupSet) override;
+  virtual nsIContent* GetDefaultTooltip() override;
+  virtual void SetDefaultTooltip(nsIContent* aTooltip) override;
+  virtual nsresult AddTooltipSupport(nsIContent* aNode) override;
+  virtual nsresult RemoveTooltipSupport(nsIContent* aNode) override;
+
+  virtual void AppendFrames(ChildListID     aListID,
+                            nsFrameList&    aFrameList) override;
+  virtual void InsertFrames(ChildListID     aListID,
+                            nsIFrame*       aPrevFrame,
+                            nsFrameList&    aFrameList) override;
+  virtual void RemoveFrame(ChildListID     aListID,
+                           nsIFrame*       aOldFrame) override;
+
+  virtual void Reflow(nsPresContext*          aPresContext,
+                          ReflowOutput&     aDesiredSize,
+                          const ReflowInput& aReflowInput,
+                          nsReflowStatus&          aStatus) override;
+  virtual nsresult HandleEvent(nsPresContext* aPresContext,
+                               WidgetGUIEvent* aEvent,
+                               nsEventStatus* aEventStatus) override;
+
+  virtual void BuildDisplayList(nsDisplayListBuilder*   aBuilder,
+                                const nsRect&           aDirtyRect,
+                                const nsDisplayListSet& aLists) override;
+
+  /**
+   * Get the "type" of the frame
+   *
+   * @see nsGkAtoms::rootFrame
+   */
+  virtual nsIAtom* GetType() const override;
+
+  virtual bool IsFrameOfType(uint32_t aFlags) const override
+  {
+    // Override bogus IsFrameOfType in nsBoxFrame.
+    if (aFlags & (nsIFrame::eReplacedContainsBlock | nsIFrame::eReplaced))
+      return false;
+    return nsBoxFrame::IsFrameOfType(aFlags);
+  }
+  
+#ifdef DEBUG_FRAME_DUMP
+  virtual nsresult GetFrameName(nsAString& aResult) const override;
+#endif
+
+  nsPopupSetFrame* mPopupSetFrame;
+
+protected:
+  nsIContent* mDefaultTooltip;
+};
+
+//----------------------------------------------------------------------
+
+nsContainerFrame*
+NS_NewRootBoxFrame(nsIPresShell* aPresShell, nsStyleContext* aContext)
+{
+  return new (aPresShell) nsRootBoxFrame(aContext);
+}
+
+NS_IMPL_FRAMEARENA_HELPERS(nsRootBoxFrame)
+
+nsRootBoxFrame::nsRootBoxFrame(nsStyleContext* aContext):
+  nsBoxFrame(aContext, true)
+{
+  mPopupSetFrame = nullptr;
+
+  nsCOMPtr<nsBoxLayout> layout;
+  NS_NewStackLayout(layout);
+  SetXULLayoutManager(layout);
+}
+
+void
+nsRootBoxFrame::AppendFrames(ChildListID     aListID,
+                             nsFrameList&    aFrameList)
+{
+  MOZ_ASSERT(aListID == kPrincipalList, "unexpected child list ID");
+  MOZ_ASSERT(mFrames.IsEmpty(), "already have a child frame");
+  nsBoxFrame::AppendFrames(aListID, aFrameList);
+}
+
+void
+nsRootBoxFrame::InsertFrames(ChildListID     aListID,
+                             nsIFrame*       aPrevFrame,
+                             nsFrameList&    aFrameList)
+{
+  // Because we only support a single child frame inserting is the same
+  // as appending.
+  MOZ_ASSERT(!aPrevFrame, "unexpected previous sibling frame");
+  AppendFrames(aListID, aFrameList);
+}
+
+void
+nsRootBoxFrame::RemoveFrame(ChildListID     aListID,
+                            nsIFrame*       aOldFrame)
+{
+  NS_ASSERTION(aListID == kPrincipalList, "unexpected child list ID");
+  if (aOldFrame == mFrames.FirstChild()) {
+    nsBoxFrame::RemoveFrame(aListID, aOldFrame);
+  } else {
+    MOZ_CRASH("unknown aOldFrame");
+  }
+}
+
+#ifdef DEBUG_REFLOW
+int32_t gReflows = 0;
+#endif
+
+void
+nsRootBoxFrame::Reflow(nsPresContext*           aPresContext,
+                       ReflowOutput&     aDesiredSize,
+                       const ReflowInput& aReflowInput,
+                       nsReflowStatus&          aStatus)
+{
+  DO_GLOBAL_REFLOW_COUNT("nsRootBoxFrame");
+
+#ifdef DEBUG_REFLOW
+  gReflows++;
+  printf("----Reflow %d----\n", gReflows);
+#endif
+  return nsBoxFrame::Reflow(aPresContext, aDesiredSize, aReflowInput, aStatus);
+}
+
+void
+nsRootBoxFrame::BuildDisplayList(nsDisplayListBuilder*   aBuilder,
+                                 const nsRect&           aDirtyRect,
+                                 const nsDisplayListSet& aLists)
+{
+  if (mContent && mContent->GetProperty(nsGkAtoms::DisplayPortMargins)) {
+    // The XUL document's root element may have displayport margins set in
+    // ChromeProcessController::InitializeRoot, and we should to supply the
+    // base rect.
+    nsRect displayPortBase = aDirtyRect.Intersect(nsRect(nsPoint(0, 0), GetSize()));
+    nsLayoutUtils::SetDisplayPortBase(mContent, displayPortBase);
+  }
+
+  // root boxes don't need a debug border/outline or a selection overlay...
+  // They *may* have a background propagated to them, so force creation
+  // of a background display list element.
+  DisplayBorderBackgroundOutline(aBuilder, aLists, true);
+
+  BuildDisplayListForChildren(aBuilder, aDirtyRect, aLists);
+}
+
+nsresult
+nsRootBoxFrame::HandleEvent(nsPresContext* aPresContext,
+                            WidgetGUIEvent* aEvent,
+                            nsEventStatus* aEventStatus)
+{
+  NS_ENSURE_ARG_POINTER(aEventStatus);
+  if (nsEventStatus_eConsumeNoDefault == *aEventStatus) {
+    return NS_OK;
+  }
+
+  if (aEvent->mMessage == eMouseUp) {
+    nsFrame::HandleEvent(aPresContext, aEvent, aEventStatus);
+  }
+
+  return NS_OK;
+}
+
+// REVIEW: The override here was doing nothing since nsBoxFrame is our
+// parent class
+nsIAtom*
+nsRootBoxFrame::GetType() const
+{
+  return nsGkAtoms::rootFrame;
+}
+
+nsPopupSetFrame*
+nsRootBoxFrame::GetPopupSetFrame()
+{
+  return mPopupSetFrame;
+}
+
+void
+nsRootBoxFrame::SetPopupSetFrame(nsPopupSetFrame* aPopupSet)
+{
+  // Under normal conditions this should only be called once.  However,
+  // if something triggers ReconstructDocElementHierarchy, we will
+  // destroy this frame's child (the nsDocElementBoxFrame), but not this
+  // frame.  This will cause the popupset to remove itself by calling
+  // |SetPopupSetFrame(nullptr)|, and then we'll be able to accept a new
+  // popupset.  Since the anonymous content is associated with the
+  // nsDocElementBoxFrame, we'll get a new popupset when the new doc
+  // element box frame is created.
+  if (!mPopupSetFrame || !aPopupSet) {
+    mPopupSetFrame = aPopupSet;
+  } else {
+    NS_NOTREACHED("Popup set is already defined! Only 1 allowed.");
+  }
+}
+
+nsIContent*
+nsRootBoxFrame::GetDefaultTooltip()
+{
+  return mDefaultTooltip;
+}
+
+void
+nsRootBoxFrame::SetDefaultTooltip(nsIContent* aTooltip)
+{
+  mDefaultTooltip = aTooltip;
+}
+
+nsresult
+nsRootBoxFrame::AddTooltipSupport(nsIContent* aNode)
+{
+  NS_ENSURE_TRUE(aNode, NS_ERROR_NULL_POINTER);
+
+  nsXULTooltipListener *listener = nsXULTooltipListener::GetInstance();
+  if (!listener)
+    return NS_ERROR_OUT_OF_MEMORY;
+
+  return listener->AddTooltipSupport(aNode);
+}
+
+nsresult
+nsRootBoxFrame::RemoveTooltipSupport(nsIContent* aNode)
+{
+  // XXjh yuck, I'll have to implement a way to get at
+  // the tooltip listener for a given node to make 
+  // this work.  Not crucial, we aren't removing 
+  // tooltips from any nodes in the app just yet.
+  return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+NS_QUERYFRAME_HEAD(nsRootBoxFrame)
+  NS_QUERYFRAME_ENTRY(nsIRootBox)
+NS_QUERYFRAME_TAIL_INHERITING(nsBoxFrame)
+
+#ifdef DEBUG_FRAME_DUMP
+nsresult
+nsRootBoxFrame::GetFrameName(nsAString& aResult) const
+{
+  return MakeFrameName(NS_LITERAL_STRING("RootBox"), aResult);
+}
+#endif