[New Multicolumn] Add support for column-span:all

Source/core/rendering/RenderObject.h

 /*
  * Copyright (C) 2000 Lars Knoll (knoll@kde.org)
  *           (C) 2000 Antti Koivisto (koivisto@kde.org)
  *           (C) 2000 Dirk Mueller (mueller@kde.org)
  *           (C) 2004 Allan Sandfeld Jensen (kde@carewolf.com)
  * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2012 Apple Inc. All rights reserved.
  * Copyright (C) 2009 Google 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
@@ skipping 283 matching lines @@
     //////////////////////////////////////////
 private:
 #if ENABLE(ASSERT)
     bool isSetNeedsLayoutForbidden() const { return m_setNeedsLayoutForbidden; }
     void setNeedsLayoutIsForbidden(bool flag) { m_setNeedsLayoutForbidden = flag; }
 #endif
 
     void addAbsoluteRectForLayer(LayoutRect& result);
     bool requiresAnonymousTableWrappers(const RenderObject*) const;
 
+    // This renderer has column-span:all, but is it really a valid column spanner?
+    bool isValidColumnSpanAll() const;
+
     // Gets pseudoStyle from Shadow host(in case of input elements)
     // or from Parent element.
     PassRefPtr<RenderStyle> getUncachedPseudoStyleFromParentOrShadowHost() const;
 
     bool skipInvalidationWhenLaidOutChildren() const;
 
 public:
 #ifndef NDEBUG
     void showTreeForThis() const;
     void showRenderTreeForThis() const;
@@ skipping 37 matching lines @@
     bool isMeter() const { return isOfType(RenderObjectMeter); }
     bool isProgress() const { return isOfType(RenderObjectProgress); }
     bool isQuote() const { return isOfType(RenderObjectQuote); }
     bool isRenderButton() const { return isOfType(RenderObjectRenderButton); }
     bool isRenderFullScreen() const { return isOfType(RenderObjectRenderFullScreen); }
     bool isRenderFullScreenPlaceholder() const { return isOfType(RenderObjectRenderFullScreenPlaceholder); }
     bool isRenderGrid() const { return isOfType(RenderObjectRenderGrid); }
     bool isRenderIFrame() const { return isOfType(RenderObjectRenderIFrame); }
     bool isRenderImage() const { return isOfType(RenderObjectRenderImage); }
     bool isRenderMultiColumnSet() const { return isOfType(RenderObjectRenderMultiColumnSet); }
+    bool isRenderMultiColumnSpannerSet() const { return isOfType(RenderObjectRenderMultiColumnSpannerSet); }
     bool isRenderRegion() const { return isOfType(RenderObjectRenderRegion); }
     bool isRenderScrollbarPart() const { return isOfType(RenderObjectRenderScrollbarPart); }
     bool isRenderTableCol() const { return isOfType(RenderObjectRenderTableCol); }
     bool isRenderView() const { return isOfType(RenderObjectRenderView); }
     bool isReplica() const { return isOfType(RenderObjectReplica); }
     bool isRuby() const { return isOfType(RenderObjectRuby); }
     bool isRubyBase() const { return isOfType(RenderObjectRubyBase); }
     bool isRubyRun() const { return isOfType(RenderObjectRubyRun); }
     bool isRubyText() const { return isOfType(RenderObjectRubyText); }
     bool isSlider() const { return isOfType(RenderObjectSlider); }
@@ skipping 130 matching lines @@
         return true;
     }
 
     bool isAnonymous() const { return m_bitfields.isAnonymous(); }
     bool isAnonymousBlock() const
     {
         // This function is kept in sync with anonymous block creation conditions in
         // RenderBlock::createAnonymousBlock(). This includes creating an anonymous
         // RenderBlock having a BLOCK or BOX display. Other classes such as RenderTextFragment
         // are not RenderBlocks and will return false. See https://bugs.webkit.org/show_bug.cgi?id=56709.
-        return isAnonymous() && (style()->display() == BLOCK || style()->display() == BOX) && style()->styleType() == NOPSEUDO && isRenderBlock() && !isListMarker() && !isRenderFlowThread()
+        return isAnonymous() && (style()->display() == BLOCK || style()->display() == BOX) && style()->styleType() == NOPSEUDO && isRenderBlock() && !isListMarker() && !isRenderFlowThread() && !isRenderMultiColumnSet()
             && !isRenderFullScreen()
             && !isRenderFullScreenPlaceholder();
     }
     bool isAnonymousColumnsBlock() const { return style()->specifiesColumns() && isAnonymousBlock(); }
     bool isAnonymousColumnSpanBlock() const { return style()->columnSpan() && isAnonymousBlock(); }
     bool isElementContinuation() const { return node() && node()->renderer() != this; }
     bool isInlineElementContinuation() const { return isElementContinuation() && isInline(); }
     virtual RenderBoxModelObject* virtualContinuation() const { return 0; }
 
     bool isFloating() const { return m_bitfields.floating(); }
@@ skipping 101 matching lines @@
     void clearNode() { m_node = nullptr; }
 
     // Returns the styled node that caused the generation of this renderer.
     // This is the same as node() except for renderers of :before, :after and
     // :first-letter pseudo elements for which their parent node is returned.
     Node* generatingNode() const { return isPseudoElement() ? node()->parentOrShadowHostNode() : node(); }
 
     Document& document() const { return m_node->document(); }
     LocalFrame* frame() const { return document().frame(); }
 
+    bool isColumnSpanAll() const { return style()->columnSpan() == ColumnSpanAll && isValidColumnSpanAll(); }
+
     // Returns the object containing this one. Can be different from parent for positioned elements.
     // If paintInvalidationContainer and paintInvalidationContainerSkipped are not null, on return *paintInvalidationContainerSkipped
     // is true if the renderer returned is an ancestor of paintInvalidationContainer.
     RenderObject* container(const RenderLayerModelObject* paintInvalidationContainer = 0, bool* paintInvalidationContainerSkipped = 0) const;
     RenderBlock* containerForFixedPosition(const RenderLayerModelObject* paintInvalidationContainer = 0, bool* paintInvalidationContainerSkipped = 0) const;
 
     virtual RenderObject* hoverAncestor() const { return parent(); }
 
     Element* offsetParent() const;
 
@@ skipping 430 matching lines @@
         RenderObjectQuote,
         RenderObjectRenderButton,
         RenderObjectRenderFlowThread,
         RenderObjectRenderFullScreen,
         RenderObjectRenderFullScreenPlaceholder,
         RenderObjectRenderGrid,
         RenderObjectRenderIFrame,
         RenderObjectRenderImage,
         RenderObjectRenderInline,
         RenderObjectRenderMultiColumnSet,
+        RenderObjectRenderMultiColumnSpannerSet,
         RenderObjectRenderPart,
         RenderObjectRenderRegion,
         RenderObjectRenderScrollbarPart,
         RenderObjectRenderTableCol,
         RenderObjectRenderView,
         RenderObjectReplica,
         RenderObjectRuby,
         RenderObjectRubyBase,
         RenderObjectRubyRun,
         RenderObjectRubyText,
@@ skipping 517 matching lines @@
 void showTree(const blink::RenderObject*);
 void showLineTree(const blink::RenderObject*);
 void showRenderTree(const blink::RenderObject* object1);
 // We don't make object2 an optional parameter so that showRenderTree
 // can be called from gdb easily.
 void showRenderTree(const blink::RenderObject* object1, const blink::RenderObject* object2);
 
 #endif
 
 #endif // RenderObject_h