using System;
using System.Collections.Generic;
using System.Text;
using System.Collections;
using System.Xml;
namespace FormulaEditor
{
/// <summary>
/// Subscripted index
/// </summary>
public class SubscriptedSymbol : SimpleSymbol
{
/// <summary>
/// Subscript
/// </summary>
protected string sub;
/// <summary>
/// Pair
/// </summary>
protected StringPair pair;
/// <summary>
/// Constructor
/// </summary>
/// <param name="s">String</param>
/// <param name="sub">Subsript</param>
public SubscriptedSymbol(string s, string sub)
: base('f', (int)FormulaConstants.Series, true, s)
{
this.sub = sub;
pair = new StringPair(s, sub);
}
public override void CreateAttributes(XmlDocument doc, XmlElement e)
{
base.CreateAttributes(doc, e);
XmlAttribute attr = doc.CreateAttribute("Sub");
attr.Value = sub;
e.Attributes.Append(attr);
}
public override void LoadAttributes(XmlElement e)
{
base.LoadAttributes(e);
sub = e.Attributes["Sub"].Value;
}
public override void SetToFormula(MathFormula formula)
{
}
/// <summary>
/// The symbol pair
/// </summary>
public StringPair Pair
{
get
{
return pair;
}
}
/// <summary>
/// ICloneable interface implementation
/// </summary>
/// <returns></returns>
public override object Clone()
{
return new SubscriptedSymbol(s, sub);
}
}
/// <summary>
/// Pair of strings
/// </summary>
public class StringPair
{
/// <summary>
/// First string
/// </summary>
string s1;
/// <summary>
/// Second string
/// </summary>
string s2;
/// <summary>
/// Constructor
/// </summary>
/// <param name="s1">First string</param>
/// <param name="s2">Second string</param>
public StringPair(string s1, string s2)
{
this.s1 = s1;
this.s2 = s2;
}
public override int GetHashCode()
{
return s1.GetHashCode() * s2.GetHashCode();
}
public override bool Equals(object obj)
{
if (obj is StringPair)
{
StringPair p = obj as StringPair;
return (s1.Equals(p.s1) & s2.Equals(p.s2));
}
return false;
}
/// <summary>
/// First string
/// </summary>
public string First
{
get
{
return s1;
}
}
/// <summary>
/// Second string
/// </summary>
public string Second
{
get
{
return s2;
}
}
}
}
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