/// <summary>
/// This method inserts newArgument before the current index-th argument of this
/// element. If index is 0, or if index is one more than the current number
/// of arguments, newArgument is appended as the last argument. This frequently
/// differs from setting the node at Node::childNodes().item(index),
/// as qualifier elements and declare elements are not counted.
/// </summary>
public MathMLElement InsertArgument(MathMLElement newArgument, int index)
{
if (index == 0)
{
element.AppendChild(newArgument);
}
else
{
element.InsertBefore(newArgument, arguments.Item(index));
}
return(newArgument);
}
private IEnumerable <Tuple <string, int, string> > GetAttributes(Type type, MathMLElement element)
{
var attributes = new List <Tuple <string, int, string> >();
var properties = type.GetProperties();
foreach (var property in properties)
{
var isAttribute = false;
var attributeName = "";
var attributeOrderIndex = 100;
object defaultPropertyValue = null;
var propertyAttributes = property.GetCustomAttributes(true);
foreach (var propertyAttribute in propertyAttributes)
{
if (propertyAttribute is MathMLAttributeName)
{
isAttribute = true;
attributeName = ((MathMLAttributeName)propertyAttribute).AttributeName;
}
else if (propertyAttribute is MathMLAttributeOrderIndex)
{
attributeOrderIndex = ((MathMLAttributeOrderIndex)propertyAttribute).OrderIndex;
}
else if (propertyAttribute is DefaultValue)
{
defaultPropertyValue = ((DefaultValue)propertyAttribute).Value;
}
}
if (isAttribute)
{
var propertyValue = property.GetValue(element, null);
var attributeValue = SerializeAttributeValue(propertyValue);
var defaultAttributeValue = SerializeAttributeValue(defaultPropertyValue);
if (attributeValue != defaultAttributeValue)
{
attributes.Add(new Tuple <string, int, string>(attributeName, attributeOrderIndex, attributeValue));
}
}
}
return(attributes.OrderBy(a => a.Item2));
}
private string SerializeMathMLElement(MathMLElement element)
{
var type = GetMathMLElementType(element);
var elementName = GetElementName(type);
var attributes = GetAttributes(type, element);
var attributeString = string.Join("", attributes.Select(a => string.Format(" {0}=\"{1}\"", a.Item1, a.Item3)));
var childElementsString = "";
foreach (var node in element.Children)
{
childElementsString += SerializeMathMLNode(node);
}
return(string.Format("<{0}{1}>{2}</{3}>", elementName, attributeString, childElementsString, elementName));
}
/// <summary>
/// This method sets newArgument as the index-th argument of this element.
/// If there is currently an index-th argument, it is replaced by newArgument.
/// This frequently differs from setting the node at Node::childNodes().item(index),
/// as qualifier elements and declare elements are not counted.
/// </summary>
public MathMLElement SetArgument(MathMLElement newArgument, int index)
{
XmlNode node = arguments.Item(index);
if (node != null)
{
node = element.ReplaceChild(newArgument, node);
}
else if (index == arguments.Count + 1)
{
node = element.AppendChild(newArgument);
}
else
{
// this is bad, should throw some sort of exceptionb
}
return((MathMLElement)node);
}
/// <summary>
/// This method inserts newArgument before the current index-th argument of this
/// element. If index is 0, or if index is one more than the current number
/// of arguments, newArgument is appended as the last argument. This frequently
/// differs from setting the node at Node::childNodes().item(index),
/// as qualifier elements and declare elements are not counted.
/// </summary>
public MathMLElement InsertArgument(MathMLElement newArgument, int index)
{
if(index == 0)
{
element.AppendChild(newArgument);
}
else
{
element.InsertBefore(newArgument, arguments.Item(index));
}
return newArgument;
}
internal MathMLPresentationTokenNodeList(MathMLElement p)
{
list = p.ChildNodes;
}
internal MathMLArgumentsList(MathMLElement p)
{
parent = p;
}
internal MathMLDeclarationsList(MathMLElement p)
{
parent = p;
}
/// <summary>
/// This method sets newArgument as the index-th argument of this element.
/// If there is currently an index-th argument, it is replaced by newArgument.
/// This frequently differs from setting the node at Node::childNodes().item(index),
/// as qualifier elements and declare elements are not counted.
/// </summary>
public MathMLElement SetArgument(MathMLElement newArgument, int index)
{
return(container.SetArgument(newArgument, index));
}
internal MathMLDeclarationsList(MathMLElement p)
{
parent = p;
}
private Area FormatFencedContainer(MathMLElement e, IFormattingContext context, ArrayList arguments,
char[] separators, String open, String close)
{
BoundingBox extent = BoundingBox.New();
int argCount = arguments.Count;
int openCount = open.Length > 0 ? 1 : 0;
int closeCount = close.Length > 0 ? 1 : 0;
// list to hold fences, childs and separators
Area[] areas = new Area[openCount + closeCount + argCount + (argCount > 1 ? argCount - 1 : 0)];
// process all nodes that are not stretchy operators, get thier total
// extents
for(int i = 0, j = 0; i < argCount; i++)
{
MathMLElement element = (MathMLElement)arguments[i];
MathMLOperatorElement op = element as MathMLOperatorElement;
if(op == null || op.Stretchy == false)
{
areas[i + j + openCount] = (Area)element.Accept(this, context);
extent.Append(areas[i + j + openCount].BoundingBox);
}
// insert a separator
if(i + 1 < argCount)
{
// at the next child node, but i has not been bumped yet
areas[i + j + openCount + 1] =
GlyphFactory.GetGlyph(context,
context.Size, separators[j < separators.Length ? j : separators.Length - 1]);
j++;
}
}
if(!context.Stretch.Defined)
{
// avail width is epsilon because stretchy glyphs were not counted in the
// width calculation
context.Stretch = BoundingBox.New(Single.Epsilon, extent.Height, extent.Depth);
}
else
{
// calculate availible width
context.StretchWidth = context.StretchWidth - extent.Width;
if(context.Stretch.Width < 0) context.StretchWidth = 0;
}
// process all areas that need to be stretched
for(int i = 0, j = 0; i < argCount; i++)
{
MathMLOperatorElement op = arguments[i] as MathMLOperatorElement;
if(op != null && op.Stretchy)
{
areas[i + openCount + j] = (Area)op.Accept(this, context);
context.StretchWidth -= areas[i + openCount + j].BoundingBox.Width;
if(context.Stretch.Width < 0) context.StretchWidth = 0;
// adjust sep index
if (i + 1 < argCount) j++;
}
}
// add fenced elements, these only stretchy vertically
context.StretchWidth = 0;
if(openCount > 0)
{
areas[0] = open.Length > 1 ? AreaFactory.String(context, open) :
GlyphFactory.GetStretchyGlyph(context, context.Size, open[0], context.Stretch);
}
if(closeCount > 0)
{
areas[areas.Length - 1] = close.Length > 1 ? AreaFactory.String(context, close) :
GlyphFactory.GetStretchyGlyph(context, context.Size, close[0], context.Stretch);
}
return AreaFactory.Horizontal(areas);
}
/**
* There was an error processing a node, create an error node.
* wrap the completed area with a MathMLWrapper area and set the
* elements area field to point to the newly completed area
*/
private Area Error(IFormattingContext ctx, MathMLElement e, String errorMsg)
{
Debug.WriteLine("Error Formatting " + e.GetType().Name + " element, " + errorMsg);
Area area = AreaFactory.String(ctx, "?");
area = AreaFactory.Color(Color.Red, area);
area = new MathMLWrapperArea(area, e);
Area.SetArea(e, area);
return area;
}
/**
* wrap the completed area with a MathMLWrapper area and set the
* elements area field to point to the newly completed area
*/
private Area CompleteArea(IFormattingContext ctx, MathMLElement e, Area area)
{
if(ctx.cacheArea)
{
area = new MathMLWrapperArea(area, e);
Area.SetArea(e, area);
}
return area;
}
/// <summary>
/// Format a row of elements. This can be either a presentation container or a mrow
/// </summary>
private Area FormatContainer(MathMLElement e, IFormattingContext ctx, ArrayList arguments)
{
IFormattingContext context = ctx.Clone();
BoundingBox extent = BoundingBox.New();
Area[] areas = new Area[arguments.Count];
int stretchCount = 0;
// save the stretch size because stretch scope can not extend into another
// level of nesting
BoundingBox stretch = context.Stretch;
context.Stretch = BoundingBox.New();
// process all nodes that are not stretchy operators, get thier total
// extents
for(int i = 0; i < arguments.Count; i++)
{
MathMLElement element = (MathMLElement)arguments[i];
MathMLOperatorElement op = element as MathMLOperatorElement;
if(op == null || op.Stretchy == false)
{
areas[i] = (Area)element.Accept(this, context);
extent.Append(areas[i].BoundingBox);
}
if(op != null && op.Stretchy)
{
stretchCount++;
}
}
// if we have any elements that can be stretched, stretch them
if(stretchCount > 0)
{
if(!stretch.Defined)
{
// avail width is epsilon because stretchy glyphs were not counted in the
// width calculation
context.Stretch = BoundingBox.New(Single.Epsilon, extent.Height, extent.Depth);
}
else
{
// set the stretch size back to stretch the child elements
context.Stretch = stretch;
// calculate availible width
context.StretchWidth = context.Stretch.Width - extent.Width;
if(context.Stretch.Width < 0) context.StretchWidth = 0;
// size to stretch each width equally
context.StretchWidth = context.Stretch.Width / (float)stretchCount;
}
// process all areas that need to be stretched
for(int i = 0; i < arguments.Count; i++)
{
MathMLOperatorElement op = arguments[i] as MathMLOperatorElement;
if(op != null && op.Stretchy)
{
areas[i] = (Area)op.Accept(this, context);
}
}
}
Area area = AreaFactory.Horizontal(areas);
// hide the areas if it is a phantom
if(e.Name == "mphantom")
{
area = AreaFactory.Hide(area);
}
else if(e.Name == "merror")
{
area = AreaFactory.Color(Color.Red, area);
}
// table cell areas elemetns area a special case, they get 'Completed'
// in the MathMLTableCellElement method
return area;
}
internal MathMLArgumentsList(MathMLElement p)
{
parent = p;
}
/// <summary>
/// create the enumerator. the enumerator is initially created with the
/// current element set before the collection
/// </summary>
/// <param name="p">the parent node</param>
internal MathMLArgumentsEnumerator(MathMLElement p)
{
parent = p;
}
public MathMLContainerImpl(MathMLElement e)
{
element = e;
arguments = new MathMLArgumentsList(e);
declarations = new MathMLDeclarationsList(e);
}
/// <summary>
/// This method sets newArgument as the index-th argument of this element.
/// If there is currently an index-th argument, it is replaced by newArgument.
/// This frequently differs from setting the node at Node::childNodes().item(index),
/// as qualifier elements and declare elements are not counted.
/// </summary>
public MathMLElement SetArgument(MathMLElement newArgument, int index)
{
XmlNode node = arguments.Item(index);
if(node != null)
{
node = element.ReplaceChild(newArgument, node);
}
else if(index == arguments.Count + 1)
{
node = element.AppendChild(newArgument);
}
else
{
// this is bad, should throw some sort of exceptionb
}
return (MathMLElement)node;
}
internal MathMLPresentationTokenNodeList(MathMLElement p)
{
list = p.ChildNodes;
}
/// <summary>
/// This method inserts newArgument before the current index-th argument of this
/// element. If index is 0, or if index is one more than the current number
/// of arguments, newArgument is appended as the last argument. This frequently
/// differs from setting the node at Node::childNodes().item(index),
/// as qualifier elements and declare elements are not counted.
/// </summary>
public MathMLElement InsertArgument(MathMLElement newArgument, int index)
{
return(container_impl.InsertArgument(newArgument, index));
}
/// <summary>
/// This method sets newArgument as the index-th argument of this element.
/// If there is currently an index-th argument, it is replaced by newArgument.
/// This frequently differs from setting the node at Node::childNodes().item(index),
/// as qualifier elements and declare elements are not counted.
/// </summary>
public MathMLElement SetArgument(MathMLElement newArgument, int index)
{
return container.SetArgument(newArgument, index);
}
private Type GetMathMLElementType(MathMLElement element)
{
if (element is MathMLEnclose)
{
return(typeof(MathMLEnclose));
}
if (element is MathMLFenced)
{
return(typeof(MathMLFenced));
}
if (element is MathMLFraction)
{
return(typeof(MathMLFraction));
}
if (element is MathMLGlyph)
{
return(typeof(MathMLGlyph));
}
if (element is MathMLIdentifier)
{
return(typeof(MathMLIdentifier));
}
if (element is MathMLLabeledTableRow)
{
return(typeof(MathMLLabeledTableRow));
}
if (element is MathMLLongDivision)
{
return(typeof(MathMLLongDivision));
}
if (element is MathMLMath)
{
return(typeof(MathMLMath));
}
if (element is MathMLMultiscripts)
{
return(typeof(MathMLMultiscripts));
}
if (element is MathMLNumber)
{
return(typeof(MathMLNumber));
}
if (element is MathMLOperator)
{
return(typeof(MathMLOperator));
}
if (element is MathMLOver)
{
return(typeof(MathMLOver));
}
if (element is MathMLPadded)
{
return(typeof(MathMLPadded));
}
if (element is MathMLPhantom)
{
return(typeof(MathMLPhantom));
}
if (element is MathMLRoot)
{
return(typeof(MathMLRoot));
}
if (element is MathMLRow)
{
return(typeof(MathMLRow));
}
if (element is MathMLSpace)
{
return(typeof(MathMLSpace));
}
if (element is MathMLSquareRoot)
{
return(typeof(MathMLSquareRoot));
}
if (element is MathMLStyle)
{
return(typeof(MathMLStyle));
}
if (element is MathMLSubscript)
{
return(typeof(MathMLSubscript));
}
if (element is MathMLSubscriptSuperscript)
{
return(typeof(MathMLSubscriptSuperscript));
}
if (element is MathMLSuperscript)
{
return(typeof(MathMLSuperscript));
}
if (element is MathMLTable)
{
return(typeof(MathMLTable));
}
if (element is MathMLTableCell)
{
return(typeof(MathMLTableCell));
}
if (element is MathMLTableRow)
{
return(typeof(MathMLTableRow));
}
if (element is MathMLText)
{
return(typeof(MathMLText));
}
if (element is MathMLUnder)
{
return(typeof(MathMLUnder));
}
if (element is MathMLUnderOver)
{
return(typeof(MathMLUnderOver));
}
throw new UnknownMathMLElementException();
}
public MathMLContainerImpl(MathMLElement e)
{
element = e;
arguments = new MathMLArgumentsList(e);
declarations = new MathMLDeclarationsList(e);
}
/// <summary>
/// This method inserts newArgument before the current index-th argument of this
/// element. If index is 0, or if index is one more than the current number
/// of arguments, newArgument is appended as the last argument. This frequently
/// differs from setting the node at Node::childNodes().item(index),
/// as qualifier elements and declare elements are not counted.
/// </summary>
public MathMLElement InsertArgument(MathMLElement newArgument, int index)
{
return container_impl.InsertArgument(newArgument, index);
}
/// <summary>
/// create the enumerator. the enumerator is initially created with the
/// current element set before the collection
/// </summary>
/// <param name="p">the parent node</param>
internal MathMLArgumentsEnumerator(MathMLElement p)
{
parent = p;
}