source: trunk/HeuristicLab.ExtLibs/HeuristicLab.AvalonEdit/5.0.1/AvalonEdit-5.0.1/TextEditorOptions.cs @ 16240

// 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.ComponentModel;
using System.Reflection;
using System.Text;

namespace ICSharpCode.AvalonEdit
{
  /// <summary>
  /// A container for the text editor options.
  /// </summary>
  [Serializable]
  public class TextEditorOptions : INotifyPropertyChanged
  {
    #region ctor
    /// <summary>
    /// Initializes an empty instance of TextEditorOptions.
    /// </summary>
    public TextEditorOptions()
    {
    }
    
    /// <summary>
    /// Initializes a new instance of TextEditorOptions by copying all values
    /// from <paramref name="options"/> to the new instance.
    /// </summary>
    public TextEditorOptions(TextEditorOptions options)
    {
      // get all the fields in the class
      FieldInfo[] fields = typeof(TextEditorOptions).GetFields(BindingFlags.NonPublic | BindingFlags.Public | BindingFlags.Instance);
      
      // copy each value over to 'this'
      foreach(FieldInfo fi in fields) {
        if (!fi.IsNotSerialized)
          fi.SetValue(this, fi.GetValue(options));
      }
    }
    #endregion
    
    #region PropertyChanged handling
    /// <inheritdoc/>
    [field: NonSerialized]
    public event PropertyChangedEventHandler PropertyChanged;
    
    /// <summary>
    /// Raises the PropertyChanged event.
    /// </summary>
    /// <param name="propertyName">The name of the changed property.</param>
    protected void OnPropertyChanged(string propertyName)
    {
      OnPropertyChanged(new PropertyChangedEventArgs(propertyName));
    }
    
    /// <summary>
    /// Raises the PropertyChanged event.
    /// </summary>
    protected virtual void OnPropertyChanged(PropertyChangedEventArgs e)
    {
      if (PropertyChanged != null) {
        PropertyChanged(this, e);
      }
    }
    #endregion
    
    #region ShowSpaces / ShowTabs / ShowEndOfLine / ShowBoxForControlCharacters
    bool showSpaces;
    
    /// <summary>
    /// Gets/Sets whether to show · for spaces.
    /// </summary>
    /// <remarks>The default value is <c>false</c>.</remarks>
    [DefaultValue(false)]
    public virtual bool ShowSpaces {
      get { return showSpaces; }
      set {
        if (showSpaces != value) {
          showSpaces = value;
          OnPropertyChanged("ShowSpaces");
        }
      }
    }
    
    bool showTabs;
    
    /// <summary>
    /// Gets/Sets whether to show » for tabs.
    /// </summary>
    /// <remarks>The default value is <c>false</c>.</remarks>
    [DefaultValue(false)]
    public virtual bool ShowTabs {
      get { return showTabs; }
      set {
        if (showTabs != value) {
          showTabs = value;
          OnPropertyChanged("ShowTabs");
        }
      }
    }
    
    bool showEndOfLine;
    
    /// <summary>
    /// Gets/Sets whether to show ¶ at the end of lines.
    /// </summary>
    /// <remarks>The default value is <c>false</c>.</remarks>
    [DefaultValue(false)]
    public virtual bool ShowEndOfLine {
      get { return showEndOfLine; }
      set {
        if (showEndOfLine != value) {
          showEndOfLine = value;
          OnPropertyChanged("ShowEndOfLine");
        }
      }
    }
    
    bool showBoxForControlCharacters = true;
    
    /// <summary>
    /// Gets/Sets whether to show a box with the hex code for control characters.
    /// </summary>
    /// <remarks>The default value is <c>true</c>.</remarks>
    [DefaultValue(true)]
    public virtual bool ShowBoxForControlCharacters {
      get { return showBoxForControlCharacters; }
      set {
        if (showBoxForControlCharacters != value) {
          showBoxForControlCharacters = value;
          OnPropertyChanged("ShowBoxForControlCharacters");
        }
      }
    }
    #endregion
    
    #region EnableHyperlinks
    bool enableHyperlinks = true;
    
    /// <summary>
    /// Gets/Sets whether to enable clickable hyperlinks in the editor.
    /// </summary>
    /// <remarks>The default value is <c>true</c>.</remarks>
    [DefaultValue(true)]
    public virtual bool EnableHyperlinks {
      get { return enableHyperlinks; }
      set {
        if (enableHyperlinks != value) {
          enableHyperlinks = value;
          OnPropertyChanged("EnableHyperlinks");
        }
      }
    }
    
    bool enableEmailHyperlinks = true;
    
    /// <summary>
    /// Gets/Sets whether to enable clickable hyperlinks for e-mail addresses in the editor.
    /// </summary>
    /// <remarks>The default value is <c>true</c>.</remarks>
    [DefaultValue(true)]
    public virtual bool EnableEmailHyperlinks {
      get { return enableEmailHyperlinks; }
      set {
        if (enableEmailHyperlinks != value) {
          enableEmailHyperlinks = value;
          OnPropertyChanged("EnableEMailHyperlinks");
        }
      }
    }
    
    bool requireControlModifierForHyperlinkClick = true;
    
    /// <summary>
    /// Gets/Sets whether the user needs to press Control to click hyperlinks.
    /// The default value is true.
    /// </summary>
    /// <remarks>The default value is <c>true</c>.</remarks>
    [DefaultValue(true)]
    public virtual bool RequireControlModifierForHyperlinkClick {
      get { return requireControlModifierForHyperlinkClick; }
      set {
        if (requireControlModifierForHyperlinkClick != value) {
          requireControlModifierForHyperlinkClick = value;
          OnPropertyChanged("RequireControlModifierForHyperlinkClick");
        }
      }
    }
    #endregion
    
    #region TabSize / IndentationSize / ConvertTabsToSpaces / GetIndentationString
    // I'm using '_' prefixes for the fields here to avoid confusion with the local variables
    // in the methods below.
    // The fields should be accessed only by their property - the fields might not be used
    // if someone overrides the property.
    
    int indentationSize = 4;
    
    /// <summary>
    /// Gets/Sets the width of one indentation unit.
    /// </summary>
    /// <remarks>The default value is 4.</remarks>
    [DefaultValue(4)]
    public virtual int IndentationSize {
      get { return indentationSize; }
      set {
        if (value < 1)
          throw new ArgumentOutOfRangeException("value", value, "value must be positive");
        // sanity check; a too large value might cause WPF to crash internally much later
        // (it only crashed in the hundred thousands for me; but might crash earlier with larger fonts)
        if (value > 1000)
          throw new ArgumentOutOfRangeException("value", value, "indentation size is too large");
        if (indentationSize != value) {
          indentationSize = value;
          OnPropertyChanged("IndentationSize");
          OnPropertyChanged("IndentationString");
        }
      }
    }
    
    bool convertTabsToSpaces;
    
    /// <summary>
    /// Gets/Sets whether to use spaces for indentation instead of tabs.
    /// </summary>
    /// <remarks>The default value is <c>false</c>.</remarks>
    [DefaultValue(false)]
    public virtual bool ConvertTabsToSpaces {
      get { return convertTabsToSpaces; }
      set {
        if (convertTabsToSpaces != value) {
          convertTabsToSpaces = value;
          OnPropertyChanged("ConvertTabsToSpaces");
          OnPropertyChanged("IndentationString");
        }
      }
    }
    
    /// <summary>
    /// Gets the text used for indentation.
    /// </summary>
    [System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Naming", "CA1721:PropertyNamesShouldNotMatchGetMethods")]
    [Browsable(false)]
    public string IndentationString {
      get { return GetIndentationString(1); }
    }
    
    /// <summary>
    /// Gets text required to indent from the specified <paramref name="column"/> to the next indentation level.
    /// </summary>
    public virtual string GetIndentationString(int column)
    {
      if (column < 1)
        throw new ArgumentOutOfRangeException("column", column, "Value must be at least 1.");
      int indentationSize = this.IndentationSize;
      if (ConvertTabsToSpaces) {
        return new string(' ', indentationSize - ((column - 1) % indentationSize));
      } else {
        return "\t";
      }
    }
    #endregion
    
    bool cutCopyWholeLine = true;
    
    /// <summary>
    /// Gets/Sets whether copying without a selection copies the whole current line.
    /// </summary>
    [DefaultValue(true)]
    public virtual bool CutCopyWholeLine {
      get { return cutCopyWholeLine; }
      set {
        if (cutCopyWholeLine != value) {
          cutCopyWholeLine = value;
          OnPropertyChanged("CutCopyWholeLine");
        }
      }
    }
    
    bool allowScrollBelowDocument;
    
    /// <summary>
    /// Gets/Sets whether the user can scroll below the bottom of the document.
    /// The default value is false; but it a good idea to set this property to true when using folding.
    /// </summary>
    [DefaultValue(false)]
    public virtual bool AllowScrollBelowDocument {
      get { return allowScrollBelowDocument; }
      set {
        if (allowScrollBelowDocument != value) {
          allowScrollBelowDocument = value;
          OnPropertyChanged("AllowScrollBelowDocument");
        }
      }
    }
    
    double wordWrapIndentation = 0;
    
    /// <summary>
    /// Gets/Sets the indentation used for all lines except the first when word-wrapping.
    /// The default value is 0.
    /// </summary>
    [DefaultValue(0.0)]
    public virtual double WordWrapIndentation {
      get { return wordWrapIndentation; }
      set {
        if (double.IsNaN(value) || double.IsInfinity(value))
          throw new ArgumentOutOfRangeException("value", value, "value must not be NaN/infinity");
        if (value != wordWrapIndentation) {
          wordWrapIndentation = value;
          OnPropertyChanged("WordWrapIndentation");
        }
      }
    }
    
    bool inheritWordWrapIndentation = true;
    
    /// <summary>
    /// Gets/Sets whether the indentation is inherited from the first line when word-wrapping.
    /// The default value is true.
    /// </summary>
    /// <remarks>When combined with <see cref="WordWrapIndentation"/>, the inherited indentation is added to the word wrap indentation.</remarks>
    [DefaultValue(true)]
    public virtual bool InheritWordWrapIndentation {
      get { return inheritWordWrapIndentation; }
      set {
        if (value != inheritWordWrapIndentation) {
          inheritWordWrapIndentation = value;
          OnPropertyChanged("InheritWordWrapIndentation");
        }
      }
    }
    
    bool enableRectangularSelection = true;
    
    /// <summary>
    /// Enables rectangular selection (press ALT and select a rectangle)
    /// </summary>
    [DefaultValue(true)]
    public bool EnableRectangularSelection {
      get { return enableRectangularSelection; }
      set {
        if (enableRectangularSelection != value) {
          enableRectangularSelection = value;
          OnPropertyChanged("EnableRectangularSelection");
        }
      }
    }
    
    bool enableTextDragDrop = true;
    
    /// <summary>
    /// Enable dragging text within the text area.
    /// </summary>
    [DefaultValue(true)]
    public bool EnableTextDragDrop {
      get { return enableTextDragDrop; }
      set {
        if (enableTextDragDrop != value) {
          enableTextDragDrop = value;
          OnPropertyChanged("EnableTextDragDrop");
        }
      }
    }
    
    bool enableVirtualSpace;
    
    /// <summary>
    /// Gets/Sets whether the user can set the caret behind the line ending
    /// (into "virtual space").
    /// Note that virtual space is always used (independent from this setting)
    /// when doing rectangle selections.
    /// </summary>
    [DefaultValue(false)]
    public virtual bool EnableVirtualSpace {
      get { return enableVirtualSpace; }
      set {
        if (enableVirtualSpace != value) {
          enableVirtualSpace = value;
          OnPropertyChanged("EnableVirtualSpace");
        }
      }
    }
    
    bool enableImeSupport = true;
    
    /// <summary>
    /// Gets/Sets whether the support for Input Method Editors (IME)
    /// for non-alphanumeric scripts (Chinese, Japanese, Korean, ...) is enabled.
    /// </summary>
    [DefaultValue(true)]
    public virtual bool EnableImeSupport {
      get { return enableImeSupport; }
      set {
        if (enableImeSupport != value) {
          enableImeSupport = value;
          OnPropertyChanged("EnableImeSupport");
        }
      }
    }
    
    bool showColumnRuler = false;
    
    /// <summary>
    /// Gets/Sets whether the column ruler should be shown.
    /// </summary>
    [DefaultValue(false)]
    public virtual bool ShowColumnRuler {
      get { return showColumnRuler; }
      set {
        if (showColumnRuler != value) {
          showColumnRuler = value;
          OnPropertyChanged("ShowColumnRuler");
        }
      }
    }
    
    int columnRulerPosition = 80;
    
    /// <summary>
    /// Gets/Sets where the column ruler should be shown.
    /// </summary>
    [DefaultValue(80)]
    public virtual int ColumnRulerPosition {
      get { return columnRulerPosition; }
      set {
        if (columnRulerPosition != value) {
          columnRulerPosition = value;
          OnPropertyChanged("ColumnRulerPosition");
        }
      }
    }
    
    bool highlightCurrentLine = false;
    
    /// <summary>
    /// Gets/Sets if current line should be shown.
    /// </summary>
    [DefaultValue(false)]
    public virtual bool HighlightCurrentLine {
      get { return highlightCurrentLine; }
      set {
        if (highlightCurrentLine != value) {
          highlightCurrentLine = value;
          OnPropertyChanged("HighlightCurrentLine");
        }
      }
    }
    
    bool hideCursorWhileTyping = true;
    
    /// <summary>
    /// Gets/Sets if mouse cursor should be hidden while user is typing.
    /// </summary>
    [DefaultValue(true)]
    public bool HideCursorWhileTyping {
      get { return hideCursorWhileTyping; }
      set {
        if (hideCursorWhileTyping != value) {
          hideCursorWhileTyping = value;
          OnPropertyChanged("HideCursorWhileTyping");
        }
      }
    }
    
    bool allowToggleOverstrikeMode = false;
    
    /// <summary>
    /// Gets/Sets if the user is allowed to enable/disable overstrike mode.
    /// </summary>
    [DefaultValue(false)]
    public bool AllowToggleOverstrikeMode {
      get { return allowToggleOverstrikeMode; }
      set {
        if (allowToggleOverstrikeMode != value) {
          allowToggleOverstrikeMode = value;
          OnPropertyChanged("AllowToggleOverstrikeMode");
        }
      }
    }
  }
}