Remove MathML (part 3 of many)

Source/core/rendering/mathml/RenderMathMLFenced.cpp

Index: Source/core/rendering/mathml/RenderMathMLFenced.cpp
diff --git a/Source/core/rendering/mathml/RenderMathMLFenced.cpp b/Source/core/rendering/mathml/RenderMathMLFenced.cpp
deleted file mode 100644
index d1ed5ab3477776d4d3475f784c47a551aedc6509..0000000000000000000000000000000000000000
--- a/Source/core/rendering/mathml/RenderMathMLFenced.cpp
+++ /dev/null
@@ -1,172 +0,0 @@
-/*
- * Copyright (C) 2009 Alex Milowski (alex@milowski.com). 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
- *    documentation and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "config.h"
-
-#if ENABLE(MATHML)
-
-#include "core/rendering/mathml/RenderMathMLFenced.h"
-
-#include "MathMLNames.h"
-#include "core/platform/graphics/FontSelector.h"
-#include "core/rendering/RenderInline.h"
-#include "core/rendering/RenderText.h"
-#include "core/rendering/mathml/RenderMathMLOperator.h"
-#include <wtf/text/StringBuilder.h>
-
-namespace WebCore {
-    
-using namespace MathMLNames;
-    
-enum Braces { OpeningBraceChar = 0x28, ClosingBraceChar = 0x29 };
-    
-static const float gSeparatorMarginEndEms = 0.25f;
-static const float gFenceMarginEms = 0.1f;
-
-RenderMathMLFenced::RenderMathMLFenced(Element* element)
-    : RenderMathMLRow(element)
-    , m_open(OpeningBraceChar)
-    , m_close(ClosingBraceChar)
-    , m_closeFenceRenderer(0)
-{
-}
-
-void RenderMathMLFenced::updateFromElement()
-{
-    Element* fenced = toElement(node());
- 
-    // FIXME: Handle open/close values with more than one character (they should be treated like text).
-    AtomicString openValue = fenced->getAttribute(MathMLNames::openAttr);
-    if (openValue.length() > 0)
-        m_open = openValue[0];
-    AtomicString closeValue = fenced->getAttribute(MathMLNames::closeAttr);
-    if (closeValue.length() > 0)
-        m_close = closeValue[0];
-    
-    AtomicString separators = fenced->getAttribute(MathMLNames::separatorsAttr);
-    if (!separators.isNull()) {
-        StringBuilder characters;
-        for (unsigned int i = 0; i < separators.length(); i++) {
-            if (!isSpaceOrNewline(separators[i]))
-                characters.append(separators[i]);
-        }
-        m_separators = !characters.length() ? 0 : characters.toString().impl();
-    } else {
-        // The separator defaults to a single comma.
-        m_separators = StringImpl::create(",");
-    }
-    
-    if (isEmpty())
-        makeFences();
-}
-
-RenderMathMLOperator* RenderMathMLFenced::createMathMLOperator(UChar uChar, RenderMathMLOperator::OperatorType operatorType)
-{
-    RefPtr<RenderStyle> newStyle = RenderStyle::createAnonymousStyleWithDisplay(style(), FLEX);
-    newStyle->setFlexDirection(FlowColumn);
-    newStyle->setMarginEnd(Length((operatorType == RenderMathMLOperator::Fence ? gFenceMarginEms : gSeparatorMarginEndEms) * style()->fontSize(), Fixed));
-    if (operatorType == RenderMathMLOperator::Fence)
-        newStyle->setMarginStart(Length(gFenceMarginEms * style()->fontSize(), Fixed));
-    RenderMathMLOperator* newOperator = new (renderArena()) RenderMathMLOperator(toElement(node()), uChar);
-    newOperator->setOperatorType(operatorType);
-    newOperator->setStyle(newStyle.release());
-    return newOperator;
-}
-
-void RenderMathMLFenced::makeFences()
-{
-    RenderMathMLRow::addChild(createMathMLOperator(m_open, RenderMathMLOperator::Fence), firstChild());
-    m_closeFenceRenderer = createMathMLOperator(m_close, RenderMathMLOperator::Fence);
-    RenderMathMLRow::addChild(m_closeFenceRenderer);
-}
-
-void RenderMathMLFenced::addChild(RenderObject* child, RenderObject* beforeChild)
-{
-    // make the fences if the render object is empty
-    if (isEmpty())
-        updateFromElement();
-    
-    // FIXME: Adding or removing a child should possibly cause all later separators to shift places if they're different,
-    // as later child positions change by +1 or -1.
-    
-    RenderObject* separatorRenderer = 0;
-    if (m_separators.get()) {
-        unsigned int count = 0;
-        for (Node* position = child->node(); position; position = position->previousSibling()) {
-            if (position->isElementNode())
-                count++;
-        }
-        if (!beforeChild) {
-            // We're adding at the end (before the closing fence), so a new separator would go before the new child, not after it.
-            --count;
-        }
-        // |count| is now the number of element children that will be before our new separator, i.e. it's the 1-based index of the separator.
-        
-        if (count > 0) {
-            UChar separator;
-            
-            // Use the last separator if we've run out of specified separators.
-            if (count > m_separators.get()->length())
-                separator = (*m_separators.get())[m_separators.get()->length() - 1];
-            else
-                separator = (*m_separators.get())[count - 1];
-                
-            separatorRenderer = createMathMLOperator(separator, RenderMathMLOperator::Separator);
-        }
-    }
-    
-    if (beforeChild) {
-        // Adding |x| before an existing |y| e.g. in element (y) - first insert our new child |x|, then its separator, to get (x, y).
-        RenderMathMLRow::addChild(child, beforeChild);
-        if (separatorRenderer)
-            RenderMathMLRow::addChild(separatorRenderer, beforeChild);
-    } else {
-        // Adding |y| at the end of an existing element e.g. (x) - insert the separator first before the closing fence, then |y|, to get (x, y).
-        if (separatorRenderer)
-            RenderMathMLRow::addChild(separatorRenderer, m_closeFenceRenderer);
-        RenderMathMLRow::addChild(child, m_closeFenceRenderer);
-    }
-}
-
-// FIXME: Change createMathMLOperator() above to create an isAnonymous() operator, and remove this styleDidChange() function.
-void RenderMathMLFenced::styleDidChange(StyleDifference diff, const RenderStyle* oldStyle)
-{
-    RenderMathMLBlock::styleDidChange(diff, oldStyle);
-    
-    for (RenderObject* child = firstChild(); child; child = child->nextSibling()) {
-        if (child->node() == node()) {
-            ASSERT(child->style()->refCount() == 1);
-            child->style()->inheritFrom(style());
-            bool isFence = child == firstChild() || child == lastChild();
-            child->style()->setMarginEnd(Length((isFence ? gFenceMarginEms : gSeparatorMarginEndEms) * style()->fontSize(), Fixed));
-            if (isFence)
-                child->style()->setMarginStart(Length(gFenceMarginEms * style()->fontSize(), Fixed));
-        }
-    }
-}
-
-}    
-
-#endif