mcs/class/System.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
  31 #if RTF_LIB
  32         public
  33 #else
  34         internal
  35 #endif
  36         class Style {
  37                 #region Local Variables
  38                 public const int        NoStyleNum = 222;
  39                 public const int        NormalStyleNum = 0;
  40
  41                 private string          name;
  42                 private StyleType       type;
  43                 private bool            additive;
  44                 private int             num;
  45                 private int             based_on;
  46                 private int             next_par;
  47                 private bool            expanding;
  48                 private StyleElement    elements;
  49                 private Style           next;
  50                 #endregion Local Variables
  51
  52                 #region Constructors
  53                 public Style(RTF rtf) {
  54                         num = -1;
  55                         type = StyleType.Paragraph;
  56                         based_on = NoStyleNum;
  57                         next_par = -1;
  58
  59                         lock (rtf) {
  60                                 if (rtf.Styles == null) {
  61                                         rtf.Styles = this;
  62                                 } else {
  63                                         Style s = rtf.Styles;
  64                                         while (s.next != null)
  65                                                 s = s.next;
  66                                         s.next = this;
  67                                 }
  68                         }
  69                 }
  70                 #endregion      // Constructors
  71
  72                 #region Properties
  73                 public string Name {
  74                         get {
  75                                 return name;
  76                         }
  77
  78                         set {
  79                                 name = value;
  80                         }
  81                 }
  82
  83                 public StyleType Type {
  84                         get {
  85                                 return type;
  86                         }
  87
  88                         set {
  89                                 type = value;
  90                         }
  91                 }
  92
  93                 public bool Additive {
  94                         get {
  95                                 return additive;
  96                         }
  97
  98                         set {
  99                                 additive = value;
 100                         }
 101                 }
 102
 103                 public int BasedOn {
 104                         get {
 105                                 return based_on;
 106                         }
 107
 108                         set {
 109                                 based_on = value;
 110                         }
 111                 }
 112
 113                 public StyleElement Elements {
 114                         get {
 115                                 return elements;
 116                         }
 117
 118                         set {
 119                                 elements = value;
 120                         }
 121                 }
 122
 123                 public bool Expanding {
 124                         get {
 125                                 return expanding;
 126                         }
 127
 128                         set {
 129                                 expanding = value;
 130                         }
 131                 }
 132
 133                 public int NextPar {
 134                         get {
 135                                 return next_par;
 136                         }
 137
 138                         set {
 139                                 next_par = value;
 140                         }
 141                 }
 142
 143                 public int Num {
 144                         get {
 145                                 return num;
 146                         }
 147
 148                         set {
 149                                 num = value;
 150                         }
 151                 }
 152                 #endregion      // Properties
 153
 154                 #region Methods
 155                 public void Expand(RTF rtf) {
 156                         StyleElement    se;
 157
 158                         if (num == -1) {
 159                                 return;
 160                         }
 161
 162                         if (expanding) {
 163                                 throw new Exception("Recursive style expansion");
 164                         }
 165                         expanding = true;
 166
 167                         if (num != based_on) {
 168                                 rtf.SetToken(TokenClass.Control, Major.ParAttr, Minor.StyleNum, based_on, "\\s");
 169                                 rtf.RouteToken();
 170                         }
 171
 172                         se = elements;
 173                         while (se != null) {
 174                                 rtf.TokenClass = se.TokenClass;
 175                                 rtf.Major = se.Major;
 176                                 rtf.Minor = se.Minor;
 177                                 rtf.Param = se.Param;
 178                                 rtf.Text = se.Text;
 179                                 rtf.RouteToken();
 180                         }
 181
 182                         expanding = false;
 183                 }
 184
 185                 static public Style GetStyle(RTF rtf, int style_number) {
 186                         Style s;
 187
 188                         lock (rtf) {
 189                                 s = GetStyle(rtf.Styles, style_number);
 190                         }
 191                         return s;
 192                 }
 193
 194                 static public Style GetStyle(Style start, int style_number) {
 195                         Style   s;
 196
 197                         if (style_number == -1) {
 198                                 return start;
 199                         }
 200
 201                         s = start;
 202
 203                         while ((s != null) && (s.num != style_number)) {
 204                                 s = s.next;
 205                         }
 206                         return s;
 207                 }
 208                 #endregion      // Methods
 209         }
 210 }