michael@0: /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: /* implementation of quotes for the CSS 'content' property */
michael@0: 
michael@0: #ifndef nsQuoteList_h___
michael@0: #define nsQuoteList_h___
michael@0: 
michael@0: #include "mozilla/Attributes.h"
michael@0: #include "nsGenConList.h"
michael@0: 
michael@0: struct nsQuoteNode : public nsGenConNode {
michael@0:   // open-quote, close-quote, no-open-quote, or no-close-quote
michael@0:   const nsStyleContentType mType;
michael@0: 
michael@0:   // Quote depth before this quote, which is always non-negative.
michael@0:   int32_t mDepthBefore;
michael@0: 
michael@0:   nsQuoteNode(nsStyleContentType& aType, uint32_t aContentIndex)
michael@0:     : nsGenConNode(aContentIndex)
michael@0:     , mType(aType)
michael@0:     , mDepthBefore(0)
michael@0:   {
michael@0:     NS_ASSERTION(aType == eStyleContentType_OpenQuote ||
michael@0:                  aType == eStyleContentType_CloseQuote ||
michael@0:                  aType == eStyleContentType_NoOpenQuote ||
michael@0:                  aType == eStyleContentType_NoCloseQuote,
michael@0:                  "incorrect type");
michael@0:     NS_ASSERTION(aContentIndex <= INT32_MAX, "out of range");
michael@0:   }
michael@0: 
michael@0:   virtual bool InitTextFrame(nsGenConList* aList, 
michael@0:           nsIFrame* aPseudoFrame, nsIFrame* aTextFrame) MOZ_OVERRIDE;
michael@0: 
michael@0:   // is this 'open-quote' or 'no-open-quote'?
michael@0:   bool IsOpenQuote() {
michael@0:     return mType == eStyleContentType_OpenQuote ||
michael@0:            mType == eStyleContentType_NoOpenQuote;
michael@0:   }
michael@0: 
michael@0:   // is this 'close-quote' or 'no-close-quote'?
michael@0:   bool IsCloseQuote() {
michael@0:     return !IsOpenQuote();
michael@0:   }
michael@0: 
michael@0:   // is this 'open-quote' or 'close-quote'?
michael@0:   bool IsRealQuote() {
michael@0:     return mType == eStyleContentType_OpenQuote ||
michael@0:            mType == eStyleContentType_CloseQuote;
michael@0:   }
michael@0: 
michael@0:   // Depth of the quote for *this* node.  Either non-negative or -1.
michael@0:   // -1 means this is a closing quote that tried to decrement the
michael@0:   // counter below zero (which means no quote should be rendered).
michael@0:   int32_t Depth() {
michael@0:     return IsOpenQuote() ? mDepthBefore : mDepthBefore - 1;
michael@0:   }
michael@0: 
michael@0:   // always non-negative
michael@0:   int32_t DepthAfter() {
michael@0:     return IsOpenQuote() ? mDepthBefore + 1
michael@0:                          : (mDepthBefore == 0 ? 0 : mDepthBefore - 1);
michael@0:   }
michael@0: 
michael@0:   // The text that should be displayed for this quote.
michael@0:   const nsString* Text();
michael@0: };
michael@0: 
michael@0: class nsQuoteList : public nsGenConList {
michael@0: private:
michael@0:   nsQuoteNode* FirstNode() { return static_cast<nsQuoteNode*>(mFirstNode); }
michael@0: public:
michael@0:   // assign the correct |mDepthBefore| value to a node that has been inserted
michael@0:   // Should be called immediately after calling |Insert|.
michael@0:   void Calc(nsQuoteNode* aNode);
michael@0: 
michael@0:   nsQuoteNode* Next(nsQuoteNode* aNode) {
michael@0:     return static_cast<nsQuoteNode*>(nsGenConList::Next(aNode));
michael@0:   }
michael@0:   nsQuoteNode* Prev(nsQuoteNode* aNode) {
michael@0:     return static_cast<nsQuoteNode*>(nsGenConList::Prev(aNode));
michael@0:   }
michael@0:   
michael@0:   void RecalcAll();
michael@0: #ifdef DEBUG
michael@0:   void PrintChain();
michael@0: #endif
michael@0: };
michael@0: 
michael@0: #endif /* nsQuoteList_h___ */