Preserving inline style of the replaced block element for FormatBlock('execCommand').

Source/core/editing/FormatBlockCommand.cpp

 /*
  * Copyright (C) 2006 Apple Computer, Inc.  All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 14 matching lines @@
 
 #include "config.h"
 #include "HTMLNames.h"
 #include "bindings/v8/ExceptionStatePlaceholder.h"
 #include "core/dom/Document.h"
 #include "core/dom/Element.h"
 #include "core/dom/Range.h"
 #include "core/editing/FormatBlockCommand.h"
 #include "core/editing/VisibleUnits.h"
 #include "core/editing/htmlediting.h"
+#include "core/html/HTMLElement.h"
 
 namespace WebCore {
 
 using namespace HTMLNames;
 
 static Node* enclosingBlockToSplitTreeTo(Node* startNode);
 static bool isElementForFormatBlock(const QualifiedName& tagName);
 static inline bool isElementForFormatBlock(Node* node)
 {
     return node->isElementNode() && isElementForFormatBlock(toElement(node)->tagQName());
@@ skipping 40 matching lines @@
         // this by splitting all parents of the current paragraph up to that point.
         blockNode = createBlockElement();
         insertNodeBefore(blockNode, nodeAfterInsertionPosition);
     }
 
     Position lastParagraphInBlockNode = blockNode->lastChild() ? positionAfterNode(blockNode->lastChild()) : Position();
     bool wasEndOfParagraph = isEndOfParagraph(lastParagraphInBlockNode);
 
     moveParagraphWithClones(start, end, blockNode.get(), outerBlock.get());
 
+    // Copy the inline style of the original block element to the newly created block-style element.
+    if (outerBlock.get() != nodeAfterInsertionPosition.get() && toHTMLElement(nodeAfterInsertionPosition.get())->hasAttribute(styleAttr))
+        blockNode->setAttribute(styleAttr, toHTMLElement(nodeAfterInsertionPosition.get())->getAttribute(styleAttr));
+
     if (wasEndOfParagraph && !isEndOfParagraph(lastParagraphInBlockNode) && !isStartOfParagraph(lastParagraphInBlockNode))
         insertBlockPlaceholder(lastParagraphInBlockNode);
 }
 
 Element* FormatBlockCommand::elementForFormatBlockCommand(Range* range)
 {
     if (!range)
         return 0;
 
     Node* commonAncestor = range->commonAncestorContainer(IGNORE_EXCEPTION);
@@ skipping 50 matching lines @@
             return n;
         if (isBlock(n))
             lastBlock = n;
         if (isListElement(n))
             return n->parentNode()->rendererIsEditable() ? n->parentNode() : n;
     }
     return lastBlock;
 }
 
 }