Add m-esr52 at 52.6.0

1 files changed, 264 insertions, 0 deletions

diff --git a/layout/style/nsStyleStructInlines.h b/layout/style/nsStyleStructInlines.h
new file mode 100644
index 000000000..9cb5e1a8a
--- /dev/null
+++ b/layout/style/nsStyleStructInlines.h
@@ -0,0 +1,264 @@
+/* vim: set shiftwidth=2 tabstop=8 autoindent cindent expandtab: */
+/* 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/. */
+
+/*
+ * Inline methods that belong in nsStyleStruct.h, except that they
+ * require more headers.
+ */
+
+#ifndef nsStyleStructInlines_h_
+#define nsStyleStructInlines_h_
+
+#include "nsIFrame.h"
+#include "nsStyleStruct.h"
+#include "nsIContent.h" // for GetParent()
+#include "nsTextFrame.h" // for nsTextFrame::ShouldSuppressLineBreak
+
+inline void
+nsStyleImage::EnsureCachedBIData() const
+{
+  if (!mCachedBIData) {
+    const_cast<nsStyleImage*>(this)->mCachedBIData =
+      mozilla::MakeUnique<CachedBorderImageData>();
+  }
+}
+
+inline void
+nsStyleImage::SetSubImage(uint8_t aIndex, imgIContainer* aSubImage) const
+{
+  EnsureCachedBIData();
+  mCachedBIData->SetSubImage(aIndex, aSubImage);
+}
+
+inline imgIContainer*
+nsStyleImage::GetSubImage(uint8_t aIndex) const
+{
+  return (mCachedBIData) ? mCachedBIData->GetSubImage(aIndex) : nullptr;
+}
+
+bool
+nsStyleText::HasTextShadow() const
+{
+  return mTextShadow;
+}
+
+nsCSSShadowArray*
+nsStyleText::GetTextShadow() const
+{
+  return mTextShadow;
+}
+
+bool
+nsStyleText::NewlineIsSignificant(const nsTextFrame* aContextFrame) const
+{
+  NS_ASSERTION(aContextFrame->StyleText() == this, "unexpected aContextFrame");
+  return NewlineIsSignificantStyle() &&
+         !aContextFrame->ShouldSuppressLineBreak() &&
+         !aContextFrame->StyleContext()->IsTextCombined();
+}
+
+bool
+nsStyleText::WhiteSpaceCanWrap(const nsIFrame* aContextFrame) const
+{
+  NS_ASSERTION(aContextFrame->StyleText() == this, "unexpected aContextFrame");
+  return WhiteSpaceCanWrapStyle() && !aContextFrame->IsSVGText() &&
+         !aContextFrame->StyleContext()->IsTextCombined();
+}
+
+bool
+nsStyleText::WordCanWrap(const nsIFrame* aContextFrame) const
+{
+  NS_ASSERTION(aContextFrame->StyleText() == this, "unexpected aContextFrame");
+  return WordCanWrapStyle() && !aContextFrame->IsSVGText();
+}
+
+bool
+nsStyleDisplay::IsBlockInside(const nsIFrame* aContextFrame) const
+{
+  NS_ASSERTION(aContextFrame->StyleDisplay() == this, "unexpected aContextFrame");
+  if (aContextFrame->IsSVGText()) {
+    return aContextFrame->GetType() == nsGkAtoms::blockFrame;
+  }
+  return IsBlockInsideStyle();
+}
+
+bool
+nsStyleDisplay::IsBlockOutside(const nsIFrame* aContextFrame) const
+{
+  NS_ASSERTION(aContextFrame->StyleDisplay() == this, "unexpected aContextFrame");
+  if (aContextFrame->IsSVGText()) {
+    return aContextFrame->GetType() == nsGkAtoms::blockFrame;
+  }
+  return IsBlockOutsideStyle();
+}
+
+bool
+nsStyleDisplay::IsInlineOutside(const nsIFrame* aContextFrame) const
+{
+  NS_ASSERTION(aContextFrame->StyleDisplay() == this, "unexpected aContextFrame");
+  if (aContextFrame->IsSVGText()) {
+    return aContextFrame->GetType() != nsGkAtoms::blockFrame;
+  }
+  return IsInlineOutsideStyle();
+}
+
+bool
+nsStyleDisplay::IsOriginalDisplayInlineOutside(const nsIFrame* aContextFrame) const
+{
+  NS_ASSERTION(aContextFrame->StyleDisplay() == this, "unexpected aContextFrame");
+  if (aContextFrame->IsSVGText()) {
+    return aContextFrame->GetType() != nsGkAtoms::blockFrame;
+  }
+  return IsOriginalDisplayInlineOutsideStyle();
+}
+
+mozilla::StyleDisplay
+nsStyleDisplay::GetDisplay(const nsIFrame* aContextFrame) const
+{
+  NS_ASSERTION(aContextFrame->StyleDisplay() == this, "unexpected aContextFrame");
+  if (aContextFrame->IsSVGText() && mDisplay != mozilla::StyleDisplay::None) {
+    return aContextFrame->GetType() == nsGkAtoms::blockFrame ?
+             mozilla::StyleDisplay::Block : mozilla::StyleDisplay::Inline;
+  }
+  return mDisplay;
+}
+
+bool
+nsStyleDisplay::IsFloating(const nsIFrame* aContextFrame) const
+{
+  NS_ASSERTION(aContextFrame->StyleDisplay() == this, "unexpected aContextFrame");
+  return IsFloatingStyle() && !aContextFrame->IsSVGText();
+}
+
+// If you change this function, also change the corresponding block in
+// nsCSSFrameConstructor::ConstructFrameFromItemInternal that references
+// this function in comments.
+bool
+nsStyleDisplay::HasTransform(const nsIFrame* aContextFrame) const
+{
+  NS_ASSERTION(aContextFrame->StyleDisplay() == this, "unexpected aContextFrame");
+  return HasTransformStyle() && aContextFrame->IsFrameOfType(nsIFrame::eSupportsCSSTransforms);
+}
+
+template<class StyleContextLike>
+bool
+nsStyleDisplay::HasFixedPosContainingBlockStyleInternal(
+                  StyleContextLike* aStyleContext) const
+{
+  // NOTE: Any CSS properties that influence the output of this function
+  // should have the CSS_PROPERTY_FIXPOS_CB set on them.
+  NS_ASSERTION(aStyleContext->StyleDisplay() == this,
+               "unexpected aStyleContext");
+  return IsContainPaint() ||
+         HasPerspectiveStyle() ||
+         (mWillChangeBitField & NS_STYLE_WILL_CHANGE_FIXPOS_CB) ||
+         aStyleContext->StyleEffects()->HasFilters();
+}
+
+template<class StyleContextLike>
+bool
+nsStyleDisplay::IsFixedPosContainingBlockForAppropriateFrame(
+                  StyleContextLike* aStyleContext) const
+{
+  // NOTE: Any CSS properties that influence the output of this function
+  // should have the CSS_PROPERTY_FIXPOS_CB set on them.
+  return HasFixedPosContainingBlockStyleInternal(aStyleContext) ||
+         HasTransformStyle();
+}
+
+bool
+nsStyleDisplay::IsFixedPosContainingBlock(const nsIFrame* aContextFrame) const
+{
+  // NOTE: Any CSS properties that influence the output of this function
+  // should have the CSS_PROPERTY_FIXPOS_CB set on them.
+  if (!HasFixedPosContainingBlockStyleInternal(aContextFrame->StyleContext()) &&
+      !HasTransform(aContextFrame)) {
+    return false;
+  }
+  return !aContextFrame->IsSVGText();
+}
+
+template<class StyleContextLike>
+bool
+nsStyleDisplay::HasAbsPosContainingBlockStyleInternal(
+                  StyleContextLike* aStyleContext) const
+{
+  // NOTE: Any CSS properties that influence the output of this function
+  // should have the CSS_PROPERTY_ABSPOS_CB set on them.
+  NS_ASSERTION(aStyleContext->StyleDisplay() == this,
+               "unexpected aStyleContext");
+  return IsAbsolutelyPositionedStyle() ||
+         IsRelativelyPositionedStyle() ||
+         (mWillChangeBitField & NS_STYLE_WILL_CHANGE_ABSPOS_CB);
+}
+
+template<class StyleContextLike>
+bool
+nsStyleDisplay::IsAbsPosContainingBlockForAppropriateFrame(StyleContextLike* aStyleContext) const
+{
+  // NOTE: Any CSS properties that influence the output of this function
+  // should have the CSS_PROPERTY_ABSPOS_CB set on them.
+  return HasAbsPosContainingBlockStyleInternal(aStyleContext) ||
+         IsFixedPosContainingBlockForAppropriateFrame(aStyleContext);
+}
+
+bool
+nsStyleDisplay::IsAbsPosContainingBlock(const nsIFrame* aContextFrame) const
+{
+  // NOTE: Any CSS properties that influence the output of this function
+  // should have the CSS_PROPERTY_ABSPOS_CB set on them.
+  nsStyleContext* sc = aContextFrame->StyleContext();
+  if (!HasAbsPosContainingBlockStyleInternal(sc) &&
+      !HasFixedPosContainingBlockStyleInternal(sc) &&
+      !HasTransform(aContextFrame)) {
+    return false;
+  }
+  return !aContextFrame->IsSVGText();
+}
+
+bool
+nsStyleDisplay::IsRelativelyPositioned(const nsIFrame* aContextFrame) const
+{
+  NS_ASSERTION(aContextFrame->StyleDisplay() == this, "unexpected aContextFrame");
+  return IsRelativelyPositionedStyle() && !aContextFrame->IsSVGText();
+}
+
+bool
+nsStyleDisplay::IsAbsolutelyPositioned(const nsIFrame* aContextFrame) const
+{
+  NS_ASSERTION(aContextFrame->StyleDisplay() == this, "unexpected aContextFrame");
+  return IsAbsolutelyPositionedStyle() && !aContextFrame->IsSVGText();
+}
+
+uint8_t
+nsStyleUserInterface::GetEffectivePointerEvents(nsIFrame* aFrame) const
+{
+  if (aFrame->GetContent() && !aFrame->GetContent()->GetParent()) {
+    // The root element has a cluster of frames associated with it
+    // (root scroll frame, canvas frame, the actual primary frame). Make
+    // those take their pointer-events value from the root element's primary
+    // frame.
+    nsIFrame* f = aFrame->GetContent()->GetPrimaryFrame();
+    if (f) {
+      return f->StyleUserInterface()->mPointerEvents;
+    }
+  }
+  return mPointerEvents;
+}
+
+bool
+nsStyleBackground::HasLocalBackground() const
+{
+  NS_FOR_VISIBLE_IMAGE_LAYERS_BACK_TO_FRONT(i, mImage) {
+    const nsStyleImageLayers::Layer& layer = mImage.mLayers[i];
+    if (!layer.mImage.IsEmpty() &&
+        layer.mAttachment == NS_STYLE_IMAGELAYER_ATTACHMENT_LOCAL) {
+      return true;
+    }
+  }
+  return false;
+}
+
+#endif /* !defined(nsStyleStructInlines_h_) */