--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/webengine/osswebengine/WebCore/rendering/RenderFlow.h	Mon Mar 30 12:54:55 2009 +0300
@@ -0,0 +1,148 @@
+/*
+ * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
+ *           (C) 1999 Antti Koivisto (koivisto@kde.org)
+ * Copyright (C) 2003, 2004, 2005, 2006, 2007 Apple Inc. All rights reserved.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public License
+ * along with this library; see the file COPYING.LIB.  If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ *
+ */
+
+#ifndef RenderFlow_h
+#define RenderFlow_h
+
+#include "RenderContainer.h"
+
+namespace WebCore {
+
+/**
+ * all geometry managing stuff is only in the block elements.
+ *
+ * Inline elements don't layout themselves, but the whole paragraph
+ * gets flowed by the surrounding block element. This is, because
+ * one needs to know the whole paragraph to calculate bidirectional
+ * behaviour of text, so putting the layouting routines in the inline
+ * elements is impossible.
+ */
+class RenderFlow : public RenderContainer {
+public:
+    RenderFlow(Node* node)
+        : RenderContainer(node)
+        , m_continuation(0)
+        , m_firstLineBox(0)
+        , m_lastLineBox(0)
+        , m_lineHeight(-1)
+        , m_childrenInline(true)
+        , m_firstLine(false)
+        , m_clearStatus(CNONE)
+        , m_topMarginQuirk(false) 
+        , m_bottomMarginQuirk(false)
+        , m_hasMarkupTruncation(false)
+        , m_selectionState(SelectionNone)
+        , m_hasColumns(false)
+        , m_isContinuation(false)
+    {
+    }
+#ifndef NDEBUG
+    virtual ~RenderFlow();
+#endif
+
+    virtual RenderFlow* continuation() const { return m_continuation; }
+    void setContinuation(RenderFlow* c) { m_continuation = c; }
+    RenderFlow* continuationBefore(RenderObject* beforeChild);
+
+    void addChildWithContinuation(RenderObject* newChild, RenderObject* beforeChild);
+    virtual void addChildToFlow(RenderObject* newChild, RenderObject* beforeChild) = 0;
+    virtual void addChild(RenderObject* newChild, RenderObject* beforeChild = 0);
+
+    static RenderFlow* createAnonymousFlow(Document*, RenderStyle*);
+
+    void extractLineBox(InlineFlowBox*);
+    void attachLineBox(InlineFlowBox*);
+    void removeLineBox(InlineFlowBox*);
+    void deleteLineBoxes();
+    virtual void destroy();
+
+    virtual void dirtyLinesFromChangedChild(RenderObject* child);
+
+    virtual short lineHeight(bool firstLine, bool isRootLineBox = false) const;
+
+    InlineFlowBox* firstLineBox() const { return m_firstLineBox; }
+    InlineFlowBox* lastLineBox() const { return m_lastLineBox; }
+
+    virtual InlineBox* createInlineBox(bool makePlaceHolderBox, bool isRootLineBox, bool isOnlyRun=false);
+    virtual void dirtyLineBoxes(bool fullLayout, bool isRootLineBox = false);
+
+    void paintLines(PaintInfo&, int tx, int ty);
+    bool hitTestLines(const HitTestRequest&, HitTestResult&, int x, int y, int tx, int ty, HitTestAction);
+
+    virtual IntRect absoluteClippedOverflowRect();
+
+    virtual int lowestPosition(bool includeOverflowInterior = true, bool includeSelf = true) const;
+    virtual int rightmostPosition(bool includeOverflowInterior = true, bool includeSelf = true) const;
+    virtual int leftmostPosition(bool includeOverflowInterior = true, bool includeSelf = true) const;
+
+    virtual IntRect caretRect(int offset, EAffinity = UPSTREAM, int* extraWidthToEndOfLine = 0);
+
+    virtual void addFocusRingRects(GraphicsContext*, int tx, int ty);
+    void paintOutlineForLine(GraphicsContext*, int tx, int ty, const IntRect& prevLine, const IntRect& thisLine, const IntRect& nextLine);
+    void paintOutline(GraphicsContext*, int tx, int ty);
+
+    virtual bool hasColumns() const { return m_hasColumns; }
+
+    virtual bool isWordBreak() const { ASSERT(isInlineFlow()); return false; }
+
+    void checkConsistency() const;
+
+private:
+    // An inline can be split with blocks occurring in between the inline content.
+    // When this occurs we need a pointer to our next object.  We can basically be
+    // split into a sequence of inlines and blocks.  The continuation will either be
+    // an anonymous block (that houses other blocks) or it will be an inline flow.
+    RenderFlow* m_continuation;
+
+protected:
+    // For block flows, each box represents the root inline box for a line in the
+    // paragraph.
+    // For inline flows, each box represents a portion of that inline.
+    InlineFlowBox* m_firstLineBox;
+    InlineFlowBox* m_lastLineBox;
+
+    mutable short m_lineHeight;
+    
+    // These bitfields are moved here from subclasses to pack them together
+    // from RenderBlock
+    bool m_childrenInline : 1;
+    bool m_firstLine : 1;
+    unsigned m_clearStatus  : 2; // EClear
+    bool m_topMarginQuirk : 1;
+    bool m_bottomMarginQuirk : 1;
+    bool m_hasMarkupTruncation : 1;
+    unsigned m_selectionState : 3; // SelectionState
+    bool m_hasColumns : 1;
+    
+    // from RenderInline
+    bool m_isContinuation : 1; // Whether or not we're a continuation of an inline.
+};
+
+#ifdef NDEBUG
+inline void RenderFlow::checkConsistency() const
+{
+}
+#endif
+
+} // namespace WebCore
+
+#endif // RenderFlow_h