зеркало из https://github.com/mozilla/gecko-dev.git
90 строки
2.9 KiB
C++
90 строки
2.9 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 http://mozilla.org/MPL/2.0/. */
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/* implementation of quotes for the CSS 'content' property */
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#ifndef nsQuoteList_h___
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#define nsQuoteList_h___
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#include "mozilla/Attributes.h"
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#include "nsGenConList.h"
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struct nsQuoteNode : public nsGenConNode {
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// open-quote, close-quote, no-open-quote, or no-close-quote
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const StyleContentType mType;
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// Quote depth before this quote, which is always non-negative.
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int32_t mDepthBefore;
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nsQuoteNode(StyleContentType aType, uint32_t aContentIndex)
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: nsGenConNode(aContentIndex), mType(aType), mDepthBefore(0) {
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NS_ASSERTION(aType == StyleContentType::OpenQuote ||
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aType == StyleContentType::CloseQuote ||
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aType == StyleContentType::NoOpenQuote ||
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aType == StyleContentType::NoCloseQuote,
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"incorrect type");
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NS_ASSERTION(aContentIndex <= INT32_MAX, "out of range");
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}
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virtual bool InitTextFrame(nsGenConList* aList, nsIFrame* aPseudoFrame,
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nsIFrame* aTextFrame) override;
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// is this 'open-quote' or 'no-open-quote'?
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bool IsOpenQuote() {
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return mType == StyleContentType::OpenQuote ||
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mType == StyleContentType::NoOpenQuote;
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}
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// is this 'close-quote' or 'no-close-quote'?
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bool IsCloseQuote() { return !IsOpenQuote(); }
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// is this 'open-quote' or 'close-quote'?
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bool IsRealQuote() {
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return mType == StyleContentType::OpenQuote ||
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mType == StyleContentType::CloseQuote;
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}
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// Depth of the quote for *this* node. Either non-negative or -1.
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// -1 means this is a closing quote that tried to decrement the
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// counter below zero (which means no quote should be rendered).
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int32_t Depth() { return IsOpenQuote() ? mDepthBefore : mDepthBefore - 1; }
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// always non-negative
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int32_t DepthAfter() {
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return IsOpenQuote() ? mDepthBefore + 1
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: (mDepthBefore == 0 ? 0 : mDepthBefore - 1);
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}
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// The text that should be displayed for this quote.
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nsString Text();
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};
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class nsQuoteList : public nsGenConList {
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private:
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nsQuoteNode* FirstNode() {
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return static_cast<nsQuoteNode*>(mList.getFirst());
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}
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public:
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// assign the correct |mDepthBefore| value to a node that has been inserted
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// Should be called immediately after calling |Insert|.
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void Calc(nsQuoteNode* aNode);
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nsQuoteNode* Next(nsQuoteNode* aNode) {
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return static_cast<nsQuoteNode*>(nsGenConList::Next(aNode));
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}
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nsQuoteNode* Prev(nsQuoteNode* aNode) {
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return static_cast<nsQuoteNode*>(nsGenConList::Prev(aNode));
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}
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void RecalcAll();
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#ifdef DEBUG
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void PrintChain();
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#endif
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};
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#endif /* nsQuoteList_h___ */
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