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authorMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
committerMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
commit5f8de423f190bbb79a62f804151bc24824fa32d8 (patch)
tree10027f336435511475e392454359edea8e25895d /layout/generic/nsAtomicContainerFrame.h
parent49ee0794b5d912db1f95dce6eb52d781dc210db5 (diff)
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Add m-esr52 at 52.6.0
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diff --git a/layout/generic/nsAtomicContainerFrame.h b/layout/generic/nsAtomicContainerFrame.h
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+/* -*- 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/. */
+
+/* base class for rendering objects that need child lists but behave like leaf */
+
+#ifndef nsAtomicContainerFrame_h___
+#define nsAtomicContainerFrame_h___
+
+#include "nsContainerFrame.h"
+
+/**
+ * This class is for frames which need child lists but act like a leaf
+ * frame. In general, all frames of elements laid out according to the
+ * CSS box model would need child list for ::backdrop in case they are
+ * in fullscreen, while some of them still want leaf frame behavior.
+ */
+class nsAtomicContainerFrame : public nsContainerFrame
+{
+public:
+ NS_DECL_ABSTRACT_FRAME(nsAtomicContainerFrame)
+
+ // Bypass the nsContainerFrame/nsSplittableFrame impl of the following
+ // methods so we behave like a leaf frame.
+ bool IsLeaf() const override { return true; }
+ FrameSearchResult PeekOffsetNoAmount(bool aForward, int32_t* aOffset) override
+ {
+ return nsFrame::PeekOffsetNoAmount(aForward, aOffset);
+ }
+ FrameSearchResult PeekOffsetCharacter(bool aForward, int32_t* aOffset,
+ bool aRespectClusters = true) override
+ {
+ return nsFrame::PeekOffsetCharacter(aForward, aOffset, aRespectClusters);
+ }
+ nsSplittableType GetSplittableType() const override
+ {
+ return nsFrame::GetSplittableType();
+ }
+
+protected:
+ explicit nsAtomicContainerFrame(nsStyleContext* aContext)
+ : nsContainerFrame(aContext) {}
+};
+
+#endif // nsAtomicContainerFrame_h___