mcs/class/Managed.Windows.Forms/System.Windows.Forms.RTF/Style.cs

   1 // Permission is hereby granted, free of charge, to any person obtaining
   2 // a copy of this software and associated documentation files (the
   3 // "Software"), to deal in the Software without restriction, including
   4 // without limitation the rights to use, copy, modify, merge, publish,
   5 // distribute, sublicense, and/or sell copies of the Software, and to
   6 // permit persons to whom the Software is furnished to do so, subject to
   7 // the following conditions:
   8 //
   9 // The above copyright notice and this permission notice shall be
  10 // included in all copies or substantial portions of the Software.
  11 //
  12 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  13 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  14 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  15 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  16 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  17 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  18 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  19 //
  20 // Copyright (c) 2005 Novell, Inc. (http://www.novell.com)
  21 //
  22 // Authors:
  23 //      Peter Bartok    (pbartok@novell.com)
  24 //
  25 //
  26
  27 // COMPLETE
  28
  29 namespace System.Windows.Forms.RTF {
  30         internal class Style {
  31                 #region Local Variables
  32                 public const int        NoStyleNum = 222;
  33                 public const int        NormalStyleNum = 0;
  34
  35                 private string          name;
  36                 private StyleType       type;
  37                 private bool            additive;
  38                 private int             num;
  39                 private int             based_on;
  40                 private int             next_par;
  41                 private int             se_list;
  42                 private bool            expanding;
  43                 private StyleElement    elements;
  44                 private Style           next;
  45                 #endregion Local Variables
  46
  47                 #region Constructors
  48                 public Style(RTF rtf) {
  49                         num = -1;
  50                         type = StyleType.Paragraph;
  51                         based_on = NoStyleNum;
  52                         next_par = -1;
  53
  54                         lock (rtf) {
  55                                 if (rtf.Styles == null) {
  56                                         rtf.Styles = this;
  57                                 } else {
  58                                         Style s = rtf.Styles;
  59                                         while (s.next != null)
  60                                                 s = s.next;
  61                                         s.next = this;
  62                                 }
  63                         }
  64                 }
  65                 #endregion      // Constructors
  66
  67                 #region Properties
  68                 public string Name {
  69                         get {
  70                                 return name;
  71                         }
  72
  73                         set {
  74                                 name = value;
  75                         }
  76                 }
  77
  78                 public StyleType Type {
  79                         get {
  80                                 return type;
  81                         }
  82
  83                         set {
  84                                 type = value;
  85                         }
  86                 }
  87
  88                 public bool Additive {
  89                         get {
  90                                 return additive;
  91                         }
  92
  93                         set {
  94                                 additive = value;
  95                         }
  96                 }
  97
  98                 public int BasedOn {
  99                         get {
 100                                 return based_on;
 101                         }
 102
 103                         set {
 104                                 based_on = value;
 105                         }
 106                 }
 107
 108                 public StyleElement Elements {
 109                         get {
 110                                 return elements;
 111                         }
 112
 113                         set {
 114                                 elements = value;
 115                         }
 116                 }
 117
 118                 public bool Expanding {
 119                         get {
 120                                 return expanding;
 121                         }
 122
 123                         set {
 124                                 expanding = value;
 125                         }
 126                 }
 127
 128                 public int NextPar {
 129                         get {
 130                                 return next_par;
 131                         }
 132
 133                         set {
 134                                 next_par = value;
 135                         }
 136                 }
 137
 138                 public int Num {
 139                         get {
 140                                 return num;
 141                         }
 142
 143                         set {
 144                                 num = value;
 145                         }
 146                 }
 147                 #endregion      // Properties
 148
 149                 #region Methods
 150                 public void Expand(RTF rtf) {
 151                         StyleElement    se;
 152
 153                         if (num == -1) {
 154                                 return;
 155                         }
 156
 157                         if (expanding) {
 158                                 throw new Exception("Recursive style expansion");
 159                         }
 160                         expanding = true;
 161
 162                         if (num != based_on) {
 163                                 rtf.SetToken(TokenClass.Control, Major.ParAttr, Minor.StyleNum, based_on, "\\s");
 164                                 rtf.RouteToken();
 165                         }
 166
 167                         se = elements;
 168                         while (se != null) {
 169                                 rtf.TokenClass = se.TokenClass;
 170                                 rtf.Major = se.Major;
 171                                 rtf.Minor = se.Minor;
 172                                 rtf.Param = se.Param;
 173                                 rtf.Text = se.Text;
 174                                 rtf.RouteToken();
 175                         }
 176
 177                         expanding = false;
 178                 }
 179
 180                 static public Style GetStyle(RTF rtf, int style_number) {
 181                         Style s;
 182
 183                         lock (rtf) {
 184                                 s = GetStyle(rtf.Styles, style_number);
 185                         }
 186                         return s;
 187                 }
 188
 189                 static public Style GetStyle(Style start, int style_number) {
 190                         Style   s;
 191
 192                         if (style_number == -1) {
 193                                 return start;
 194                         }
 195
 196                         s = start;
 197
 198                         while ((s != null) && (s.num != style_number)) {
 199                                 s = s.next;
 200                         }
 201                         return s;
 202                 }
 203                 #endregion      // Methods
 204         }
 205 }