зеркало из https://github.com/mozilla/gecko-dev.git
70 строки
2.2 KiB
C++
70 строки
2.2 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at https://mozilla.org/MPL/2.0/. */
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#include "ColumnSetWrapperFrame.h"
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using namespace mozilla;
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nsBlockFrame*
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NS_NewColumnSetWrapperFrame(nsIPresShell* aPresShell,
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ComputedStyle* aStyle,
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nsFrameState aStateFlags)
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{
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ColumnSetWrapperFrame* frame = new (aPresShell) ColumnSetWrapperFrame(aStyle);
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// CSS Multi-column level 1 section 2: A multi-column container
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// establishes a new block formatting context, as per CSS 2.1 section
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// 9.4.1.
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frame->AddStateBits(aStateFlags | NS_BLOCK_FORMATTING_CONTEXT_STATE_BITS);
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return frame;
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}
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NS_IMPL_FRAMEARENA_HELPERS(ColumnSetWrapperFrame)
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NS_QUERYFRAME_HEAD(ColumnSetWrapperFrame)
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NS_QUERYFRAME_ENTRY(ColumnSetWrapperFrame)
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NS_QUERYFRAME_TAIL_INHERITING(nsBlockFrame)
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ColumnSetWrapperFrame::ColumnSetWrapperFrame(ComputedStyle* aStyle)
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: nsBlockFrame(aStyle, kClassID)
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{
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}
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#ifdef DEBUG_FRAME_DUMP
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nsresult
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ColumnSetWrapperFrame::GetFrameName(nsAString& aResult) const
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{
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return MakeFrameName(NS_LITERAL_STRING("ColumnSetWrapper"), aResult);
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}
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#endif
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// Disallow any append, insert, or remove operations after building the
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// column hierarchy since any change to the column hierarchy in the column
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// sub-tree need to be re-created.
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void
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ColumnSetWrapperFrame::AppendFrames(ChildListID aListID,
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nsFrameList& aFrameList)
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{
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MOZ_ASSERT_UNREACHABLE("Unsupported operation!");
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nsBlockFrame::AppendFrames(aListID, aFrameList);
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}
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void
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ColumnSetWrapperFrame::InsertFrames(ChildListID aListID,
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nsIFrame* aPrevFrame,
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nsFrameList& aFrameList)
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{
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MOZ_ASSERT_UNREACHABLE("Unsupported operation!");
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nsBlockFrame::InsertFrames(aListID, aPrevFrame, aFrameList);
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}
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void
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ColumnSetWrapperFrame::RemoveFrame(ChildListID aListID, nsIFrame* aOldFrame)
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{
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MOZ_ASSERT_UNREACHABLE("Unsupported operation!");
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nsBlockFrame::RemoveFrame(aListID, aOldFrame);
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}
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