1 files changed, 312 insertions, 0 deletions
diff --git a/layout/xul/nsLeafBoxFrame.cpp b/layout/xul/nsLeafBoxFrame.cpp
new file mode 100644
index 0000000000..3f1f78202c
--- /dev/null
+++ b/layout/xul/nsLeafBoxFrame.cpp
@@ -0,0 +1,312 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* 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/. */
+
+//
+// Eric Vaughan
+// Netscape Communications
+//
+// See documentation in associated header file
+//
+
+#include "mozilla/ComputedStyle.h"
+#include "mozilla/PresShell.h"
+#include "nsLeafBoxFrame.h"
+#include "nsBoxFrame.h"
+#include "nsCOMPtr.h"
+#include "nsGkAtoms.h"
+#include "nsPresContext.h"
+#include "nsIContent.h"
+#include "nsNameSpaceManager.h"
+#include "nsBoxLayoutState.h"
+#include "nsWidgetsCID.h"
+#include "nsViewManager.h"
+#include "nsContainerFrame.h"
+#include "nsDisplayList.h"
+#include <algorithm>
+
+using namespace mozilla;
+
+//
+// NS_NewLeafBoxFrame
+//
+// Creates a new Toolbar frame and returns it
+//
+nsIFrame* NS_NewLeafBoxFrame(PresShell* aPresShell, ComputedStyle* aStyle) {
+  return new (aPresShell) nsLeafBoxFrame(aStyle, aPresShell->GetPresContext());
+}
+
+NS_IMPL_FRAMEARENA_HELPERS(nsLeafBoxFrame)
+
+/**
+ * Initialize us. This is a good time to get the alignment of the box
+ */
+void nsLeafBoxFrame::Init(nsIContent* aContent, nsContainerFrame* aParent,
+                          nsIFrame* aPrevInFlow) {
+  nsLeafFrame::Init(aContent, aParent, aPrevInFlow);
+
+  if (HasAnyStateBits(NS_FRAME_FONT_INFLATION_CONTAINER)) {
+    AddStateBits(NS_FRAME_FONT_INFLATION_FLOW_ROOT);
+  }
+}
+
+void nsLeafBoxFrame::BuildDisplayList(nsDisplayListBuilder* aBuilder,
+                                      const nsDisplayListSet& aLists) {
+  // REVIEW: GetFrameForPoint used to not report events for the background
+  // layer, whereas this code will put an event receiver for this frame in the
+  // BlockBorderBackground() list. But I don't see any need to preserve
+  // that anomalous behaviour. The important thing I'm preserving is that
+  // leaf boxes continue to receive events in the foreground layer.
+  DisplayBorderBackgroundOutline(aBuilder, aLists);
+
+  if (!aBuilder->IsForEventDelivery() || !IsVisibleForPainting()) return;
+
+  aLists.Content()->AppendNewToTop<nsDisplayEventReceiver>(aBuilder, this);
+}
+
+/* virtual */
+nscoord nsLeafBoxFrame::GetMinISize(gfxContext* aRenderingContext) {
+  nscoord result;
+  DISPLAY_MIN_INLINE_SIZE(this, result);
+  nsBoxLayoutState state(PresContext(), aRenderingContext);
+
+  WritingMode wm = GetWritingMode();
+  LogicalSize minSize(wm, GetXULMinSize(state));
+
+  // GetXULMinSize returns border-box size, and we want to return content
+  // inline-size.  Since Reflow uses the reflow input's border and padding, we
+  // actually just want to subtract what GetXULMinSize added, which is the
+  // result of GetXULBorderAndPadding.
+  nsMargin bp;
+  GetXULBorderAndPadding(bp);
+
+  result = minSize.ISize(wm) - LogicalMargin(wm, bp).IStartEnd(wm);
+
+  return result;
+}
+
+/* virtual */
+nscoord nsLeafBoxFrame::GetPrefISize(gfxContext* aRenderingContext) {
+  nscoord result;
+  DISPLAY_PREF_INLINE_SIZE(this, result);
+  nsBoxLayoutState state(PresContext(), aRenderingContext);
+
+  WritingMode wm = GetWritingMode();
+  LogicalSize prefSize(wm, GetXULPrefSize(state));
+
+  // GetXULPrefSize returns border-box size, and we want to return content
+  // inline-size.  Since Reflow uses the reflow input's border and padding, we
+  // actually just want to subtract what GetXULPrefSize added, which is the
+  // result of GetXULBorderAndPadding.
+  nsMargin bp;
+  GetXULBorderAndPadding(bp);
+
+  result = prefSize.ISize(wm) - LogicalMargin(wm, bp).IStartEnd(wm);
+
+  return result;
+}
+
+nscoord nsLeafBoxFrame::GetIntrinsicISize() {
+  // No intrinsic width
+  return 0;
+}
+
+LogicalSize nsLeafBoxFrame::ComputeAutoSize(
+    gfxContext* aRenderingContext, WritingMode aWM, const LogicalSize& aCBSize,
+    nscoord aAvailableISize, const LogicalSize& aMargin,
+    const LogicalSize& aBorderPadding, ComputeSizeFlags aFlags) {
+  // Important: NOT calling our direct superclass here!
+  return nsIFrame::ComputeAutoSize(aRenderingContext, aWM, aCBSize,
+                                   aAvailableISize, aMargin, aBorderPadding,
+                                   aFlags);
+}
+
+void nsLeafBoxFrame::Reflow(nsPresContext* aPresContext,
+                            ReflowOutput& aDesiredSize,
+                            const ReflowInput& aReflowInput,
+                            nsReflowStatus& aStatus) {
+  // This is mostly a copy of nsBoxFrame::Reflow().
+  // We aren't able to share an implementation because of the frame
+  // class hierarchy.  If you make changes here, please keep
+  // nsBoxFrame::Reflow in sync.
+
+  MarkInReflow();
+  DO_GLOBAL_REFLOW_COUNT("nsLeafBoxFrame");
+  DISPLAY_REFLOW(aPresContext, this, aReflowInput, aDesiredSize, aStatus);
+  MOZ_ASSERT(aStatus.IsEmpty(), "Caller should pass a fresh reflow status!");
+
+  NS_ASSERTION(
+      aReflowInput.ComputedWidth() >= 0 && aReflowInput.ComputedHeight() >= 0,
+      "Computed Size < 0");
+
+#ifdef DO_NOISY_REFLOW
+  printf(
+      "\n-------------Starting LeafBoxFrame Reflow "
+      "----------------------------\n");
+  printf("%p ** nsLBF::Reflow %d R: ", this, myCounter++);
+  switch (aReflowInput.reason) {
+    case eReflowReason_Initial:
+      printf("Ini");
+      break;
+    case eReflowReason_Incremental:
+      printf("Inc");
+      break;
+    case eReflowReason_Resize:
+      printf("Rsz");
+      break;
+    case eReflowReason_StyleChange:
+      printf("Sty");
+      break;
+    case eReflowReason_Dirty:
+      printf("Drt ");
+      break;
+    default:
+      printf("<unknown>%d", aReflowInput.reason);
+      break;
+  }
+
+  printSize("AW", aReflowInput.AvailableWidth());
+  printSize("AH", aReflowInput.AvailableHeight());
+  printSize("CW", aReflowInput.ComputedWidth());
+  printSize("CH", aReflowInput.ComputedHeight());
+
+  printf(" *\n");
+
+#endif
+
+  // create the layout state
+  nsBoxLayoutState state(aPresContext, aReflowInput.mRenderingContext);
+
+  nsSize computedSize(aReflowInput.ComputedWidth(),
+                      aReflowInput.ComputedHeight());
+
+  nsMargin m;
+  m = aReflowInput.ComputedPhysicalBorderPadding();
+
+  // GetXULBorderAndPadding(m);
+
+  // this happens sometimes. So lets handle it gracefully.
+  if (aReflowInput.ComputedHeight() == 0) {
+    nsSize minSize = GetXULMinSize(state);
+    computedSize.height = minSize.height - m.top - m.bottom;
+  }
+
+  nsSize prefSize(0, 0);
+
+  // if we are told to layout intrinic then get our preferred size.
+  if (computedSize.width == NS_UNCONSTRAINEDSIZE ||
+      computedSize.height == NS_UNCONSTRAINEDSIZE) {
+    prefSize = GetXULPrefSize(state);
+    nsSize minSize = GetXULMinSize(state);
+    nsSize maxSize = GetXULMaxSize(state);
+    prefSize = XULBoundsCheck(minSize, prefSize, maxSize);
+  }
+
+  // get our desiredSize
+  if (aReflowInput.ComputedWidth() == NS_UNCONSTRAINEDSIZE) {
+    computedSize.width = prefSize.width;
+  } else {
+    computedSize.width += m.left + m.right;
+  }
+
+  if (aReflowInput.ComputedHeight() == NS_UNCONSTRAINEDSIZE) {
+    computedSize.height = prefSize.height;
+  } else {
+    computedSize.height += m.top + m.bottom;
+  }
+
+  // handle reflow input min and max sizes
+  // XXXbz the width handling here seems to be wrong, since
+  // mComputedMin/MaxWidth is a content-box size, whole
+  // computedSize.width is a border-box size...
+  if (computedSize.width > aReflowInput.ComputedMaxWidth())
+    computedSize.width = aReflowInput.ComputedMaxWidth();
+
+  if (computedSize.width < aReflowInput.ComputedMinWidth())
+    computedSize.width = aReflowInput.ComputedMinWidth();
+
+  // Now adjust computedSize.height for our min and max computed
+  // height.  The only problem is that those are content-box sizes,
+  // while computedSize.height is a border-box size.  So subtract off
+  // m.TopBottom() before adjusting, then readd it.
+  computedSize.height = std::max(0, computedSize.height - m.TopBottom());
+  computedSize.height =
+      NS_CSS_MINMAX(computedSize.height, aReflowInput.ComputedMinHeight(),
+                    aReflowInput.ComputedMaxHeight());
+  computedSize.height += m.TopBottom();
+
+  nsRect r(mRect.x, mRect.y, computedSize.width, computedSize.height);
+
+  SetXULBounds(state, r);
+
+  // layout our children
+  XULLayout(state);
+
+  // ok our child could have gotten bigger. So lets get its bounds
+  aDesiredSize.Width() = mRect.width;
+  aDesiredSize.Height() = mRect.height;
+  aDesiredSize.SetBlockStartAscent(GetXULBoxAscent(state));
+
+  // the overflow rect is set in SetXULBounds() above
+  aDesiredSize.mOverflowAreas = GetOverflowAreas();
+
+#ifdef DO_NOISY_REFLOW
+  {
+    printf("%p ** nsLBF(done) W:%d H:%d  ", this, aDesiredSize.Width(),
+           aDesiredSize.Height());
+
+    if (maxElementWidth) {
+      printf("MW:%d\n", *maxElementWidth);
+    } else {
+      printf("MW:?\n");
+    }
+  }
+#endif
+}
+
+#ifdef DEBUG_FRAME_DUMP
+nsresult nsLeafBoxFrame::GetFrameName(nsAString& aResult) const {
+  return MakeFrameName(u"LeafBox"_ns, aResult);
+}
+#endif
+
+nsresult nsLeafBoxFrame::CharacterDataChanged(
+    const CharacterDataChangeInfo& aInfo) {
+  MarkIntrinsicISizesDirty();
+  return nsLeafFrame::CharacterDataChanged(aInfo);
+}
+
+/* virtual */
+nsSize nsLeafBoxFrame::GetXULPrefSize(nsBoxLayoutState& aState) {
+  return nsIFrame::GetUncachedXULPrefSize(aState);
+}
+
+/* virtual */
+nsSize nsLeafBoxFrame::GetXULMinSize(nsBoxLayoutState& aState) {
+  return nsIFrame::GetUncachedXULMinSize(aState);
+}
+
+/* virtual */
+nsSize nsLeafBoxFrame::GetXULMaxSize(nsBoxLayoutState& aState) {
+  return nsIFrame::GetUncachedXULMaxSize(aState);
+}
+
+/* virtual */
+nscoord nsLeafBoxFrame::GetXULFlex() {
+  nscoord flex = 0;
+  nsIFrame::AddXULFlex(this, flex);
+  return flex;
+}
+
+/* virtual */
+nscoord nsLeafBoxFrame::GetXULBoxAscent(nsBoxLayoutState& aState) {
+  if (IsXULCollapsed()) {
+    return 0;
+  }
+  return GetXULPrefSize(aState).height;
+}
+
+NS_IMETHODIMP
+nsLeafBoxFrame::DoXULLayout(nsBoxLayoutState& aState) { return NS_OK; }