source: trunk/sources/HeuristicLab.ExtLibs/HeuristicLab.AvalonEdit/5.0.1/AvalonEdit-5.0.1/Highlighting/HtmlOptions.cs @ 12252

// Copyright (c) 2014 AlphaSierraPapa for the SharpDevelop Team
// 
// Permission is hereby granted, free of charge, to any person obtaining a copy of this
// software and associated documentation files (the "Software"), to deal in the Software
// without restriction, including without limitation the rights to use, copy, modify, merge,
// publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons
// to whom the Software is furnished to do so, subject to the following conditions:
// 
// The above copyright notice and this permission notice shall be included in all copies or
// substantial portions of the Software.
// 
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
// INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
// PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE
// FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
// DEALINGS IN THE SOFTWARE.

using System;
using System.IO;
#if DOTNET4
using System.Net;
#else
using System.Web;
#endif

namespace ICSharpCode.AvalonEdit.Highlighting
{
  /// <summary>
  /// Holds options for converting text to HTML.
  /// </summary>
  public class HtmlOptions
  {
    /// <summary>
    /// Creates a default HtmlOptions instance.
    /// </summary>
    public HtmlOptions()
    {
      this.TabSize = 4;
    }
    
    /// <summary>
    /// Creates a new HtmlOptions instance that copies applicable options from the <see cref="TextEditorOptions"/>.
    /// </summary>
    public HtmlOptions(TextEditorOptions options) : this()
    {
      if (options == null)
        throw new ArgumentNullException("options");
      this.TabSize = options.IndentationSize;
    }
    
    /// <summary>
    /// The amount of spaces a tab gets converted to.
    /// </summary>
    public int TabSize { get; set; }
    
    /// <summary>
    /// Writes the HTML attribute for the style to the text writer.
    /// </summary>
    public virtual void WriteStyleAttributeForColor(TextWriter writer, HighlightingColor color)
    {
      if (writer == null)
        throw new ArgumentNullException("writer");
      if (color == null)
        throw new ArgumentNullException("color");
      writer.Write(" style=\"");
      #if DOTNET4
      WebUtility.HtmlEncode(color.ToCss(), writer);
      #else
      HttpUtility.HtmlEncode(color.ToCss(), writer);
      #endif
      writer.Write('"');
    }
    
    /// <summary>
    /// Gets whether the color needs to be written out to HTML.
    /// </summary>
    public virtual bool ColorNeedsSpanForStyling(HighlightingColor color)
    {
      if (color == null)
        throw new ArgumentNullException("color");
      return !string.IsNullOrEmpty(color.ToCss());
    }
  }
}