mcs/class/System.Web/System.Web.UI.WebControls/BaseCompareValidator.cs

   1 //
   2 // System.Web.UI.WebControls.BaseCompareValidator
   3 //
   4 // Authors:
   5 //      Chris Toshok (toshok@novell.com)
   6 //
   7 // (C) 2005 Novell, Inc (http://www.novell.com)
   8 //
   9 // Permission is hereby granted, free of charge, to any person obtaining
  10 // a copy of this software and associated documentation files (the
  11 // "Software"), to deal in the Software without restriction, including
  12 // without limitation the rights to use, copy, modify, merge, publish,
  13 // distribute, sublicense, and/or sell copies of the Software, and to
  14 // permit persons to whom the Software is furnished to do so, subject to
  15 // the following conditions:
  16 //
  17 // The above copyright notice and this permission notice shall be
  18 // included in all copies or substantial portions of the Software.
  19 //
  20 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  21 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  22 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  23 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  24 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  25 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  26 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  27 //
  28
  29 using System.Text;
  30 using System.Threading;
  31 using System.Globalization;
  32 using System.ComponentModel;
  33 using System.Security.Permissions;
  34
  35 namespace System.Web.UI.WebControls {
  36
  37         // CAS
  38         [AspNetHostingPermission (SecurityAction.LinkDemand, Level = AspNetHostingPermissionLevel.Minimal)]
  39         [AspNetHostingPermission (SecurityAction.InheritanceDemand, Level = AspNetHostingPermissionLevel.Minimal)]
  40         public abstract class BaseCompareValidator : BaseValidator {
  41
  42 #if NET_2_0
  43                 protected
  44 #else
  45                 public
  46 #endif
  47                 BaseCompareValidator ()
  48                 {
  49                 }
  50
  51                 protected override void AddAttributesToRender (HtmlTextWriter w)
  52                 {
  53                         if (RenderUplevel) {
  54 #if NET_2_0
  55                                 if (Page!=null){
  56                                         RegisterExpandoAttribute (ClientID, "type", Type.ToString ());
  57
  58                                         switch (Type) {
  59                                         case ValidationDataType.Date:
  60                                                 DateTimeFormatInfo dateTimeFormat = CultureInfo.CurrentCulture.DateTimeFormat;
  61                                                 string pattern = dateTimeFormat.ShortDatePattern;
  62                                                 string dateorder = (pattern.StartsWith ("y", true, CultureInfo.InvariantCulture) ? "ymd" : (pattern.StartsWith ("m", true, CultureInfo.InvariantCulture) ? "mdy" : "dmy"));
  63                                                 RegisterExpandoAttribute (ClientID, "dateorder", dateorder);
  64                                                 RegisterExpandoAttribute (ClientID, "cutoffyear", dateTimeFormat.Calendar.TwoDigitYearMax.ToString ());
  65                                                 break;
  66                                         case ValidationDataType.Currency:
  67                                                 NumberFormatInfo numberFormat = CultureInfo.CurrentCulture.NumberFormat;
  68                                                 RegisterExpandoAttribute (ClientID, "decimalchar", numberFormat.CurrencyDecimalSeparator, true);
  69                                                 RegisterExpandoAttribute (ClientID, "groupchar", numberFormat.CurrencyGroupSeparator, true);
  70                                                 RegisterExpandoAttribute (ClientID, "digits", numberFormat.CurrencyDecimalDigits.ToString());
  71                                                 RegisterExpandoAttribute (ClientID, "groupsize", numberFormat.CurrencyGroupSizes [0].ToString ());
  72                                                 break;
  73                                         }
  74                                 }
  75 #else
  76                                 w.AddAttribute ("datatype", Type.ToString());
  77 #endif
  78                         }
  79
  80                         base.AddAttributesToRender (w);
  81                 }
  82
  83                 public static bool CanConvert (string text,
  84                                                ValidationDataType type)
  85                 {
  86                         object value;
  87
  88                         return Convert (text, type, out value);
  89                 }
  90
  91                 protected static bool Convert (string text,
  92                                                ValidationDataType type,
  93                                                out object value)
  94                 {
  95                         return BaseCompareValidator.Convert(text, type, false, out value);
  96                 }
  97
  98                 protected static bool Compare (string left,
  99                                                string right,
 100                                                ValidationCompareOperator op,
 101                                                ValidationDataType type)
 102                 {
 103                         return BaseCompareValidator.Compare(left, false, right, false, op, type);
 104                 }
 105
 106                 protected override bool DetermineRenderUplevel ()
 107                 {
 108                         /* presumably the CompareValidator client side
 109                          * code makes use of newer dom/js stuff than
 110                          * the rest of the validators.  but ours
 111                          * doesn't for the moment, so let's just use
 112                          * our present implementation
 113                          */
 114                         return base.DetermineRenderUplevel();
 115                 }
 116
 117                 protected static string GetDateElementOrder ()
 118                 {
 119                         // I hope there's a better way to implement this...
 120                         string pattern = Thread.CurrentThread.CurrentCulture.DateTimeFormat.ShortDatePattern;
 121                         StringBuilder order = new StringBuilder();
 122                         bool seen_date = false;
 123                         bool seen_year = false;
 124                         bool seen_month = false;
 125
 126                         pattern = pattern.ToLower (CultureInfo.InvariantCulture);
 127
 128                         for (int i = 0; i < pattern.Length; i ++) {
 129                                 char c = pattern[ i ];
 130                                 if (c != 'm' && c != 'd' && c != 'y')
 131                                         continue;
 132
 133                                 if (c == 'm') {
 134                                         if (!seen_month) order.Append ("m");
 135                                         seen_month = true;
 136                                 }
 137                                 else if (c == 'y') {
 138                                         if (!seen_year) order.Append ("y");
 139                                         seen_year = true;
 140                                 }
 141                                 else /* (c == 'd') */ {
 142                                         if (!seen_date) order.Append ("d");
 143                                         seen_date = true;
 144                                 }
 145                         }
 146
 147                         return order.ToString ();
 148                 }
 149
 150                 protected static int GetFullYear (int two_digit_year)
 151                 {
 152 #if NET_2_0
 153                         /* This is an implementation that matches the
 154                          * docs on msdn, but MS doesn't seem to go by
 155                          * their docs (at least in 1.0). */
 156                         int cutoff = CutoffYear;
 157                         int twodigitcutoff = cutoff % 100;
 158
 159                         if (two_digit_year <= twodigitcutoff) {
 160                                 return cutoff - twodigitcutoff + two_digit_year;
 161                         }
 162                         else {
 163                                 return cutoff - twodigitcutoff - 100 + two_digit_year;
 164                         }
 165 #else
 166                         /* This is the broken implementation in 1.0 */
 167                         int cutoff = CutoffYear;
 168                         int twodigitcutoff = cutoff % 100;
 169
 170                         return cutoff - twodigitcutoff + two_digit_year;
 171 #endif
 172                 }
 173
 174 #if NET_2_0
 175                 [DefaultValue (false)]
 176                 [Themeable (false)]
 177                 public
 178 #else
 179                 internal
 180 #endif
 181             bool CultureInvariantValues {
 182                         get { return ViewState.GetBool ("CultureInvariantValues", false); }
 183                         set { ViewState ["CultureInvariantValues"] = value; }
 184                 }
 185
 186
 187
 188                 protected static int CutoffYear {
 189                         get {
 190                                 return CultureInfo.CurrentCulture.Calendar.TwoDigitYearMax;
 191                         }
 192                 }
 193
 194
 195                 [DefaultValue(ValidationDataType.String)]
 196 #if NET_2_0
 197                 [Themeable (false)]
 198 #endif
 199                 [WebSysDescription("")]
 200                 [WebCategory("Behavior")]
 201                 public ValidationDataType Type {
 202                         get { return ViewState ["Type"] == null ? ValidationDataType.String : (ValidationDataType) ViewState ["Type"]; }
 203                         set { ViewState ["Type"] = value; }
 204                 }
 205
 206 #if NET_2_0
 207
 208                 public
 209 #else
 210         internal
 211 #endif
 212         static bool CanConvert (string text,
 213                                                ValidationDataType type,
 214                                                bool cultureInvariant)
 215                 {
 216                         object value;
 217                         return Convert(text, type, cultureInvariant, out value);
 218                 }
 219
 220 #if NET_2_0
 221                 protected
 222 #else
 223         internal
 224 #endif
 225         static bool Compare (string left,
 226                                                bool cultureInvariantLeftText,
 227                                                string right,
 228                                                bool cultureInvariantRightText,
 229                                                ValidationCompareOperator op,
 230                                                ValidationDataType type)
 231                 {
 232             object lo, ro;
 233
 234             if (!Convert(left, type, cultureInvariantLeftText, out lo))
 235                 return false;
 236
 237             /* DataTypeCheck is a unary operator that only
 238              * depends on the lhs */
 239             if (op == ValidationCompareOperator.DataTypeCheck)
 240                 return true;
 241
 242             /* pretty crackladen, but if we're unable to
 243              * convert the rhs to @type, the comparison
 244              * succeeds */
 245             if (!Convert(right, type, cultureInvariantRightText, out ro))
 246                 return true;
 247
 248             int comp = ((IComparable)lo).CompareTo((IComparable)ro);
 249
 250             switch (op)
 251             {
 252                 case ValidationCompareOperator.Equal:
 253                     return comp == 0;
 254                 case ValidationCompareOperator.NotEqual:
 255                     return comp != 0;
 256                 case ValidationCompareOperator.LessThan:
 257                     return comp < 0;
 258                 case ValidationCompareOperator.LessThanEqual:
 259                     return comp <= 0;
 260                 case ValidationCompareOperator.GreaterThan:
 261                     return comp > 0;
 262                 case ValidationCompareOperator.GreaterThanEqual:
 263                     return comp >= 0;
 264                 default:
 265                     return false;
 266             }
 267                 }
 268
 269 #if NET_2_0
 270         protected
 271 #else
 272         internal
 273 #endif
 274                 static bool Convert (string text,
 275                                                ValidationDataType type,
 276                                                bool cultureInvariant,
 277                                                out object value)
 278                 {
 279             try
 280             {
 281                 switch (type)
 282                 {
 283                     case ValidationDataType.String:
 284                         value = text;
 285                         return value != null;
 286
 287                     case ValidationDataType.Integer:
 288                         IFormatProvider intFormatProvider = (cultureInvariant) ?
 289                             NumberFormatInfo.InvariantInfo :
 290                             NumberFormatInfo.CurrentInfo;
 291                         value = Int32.Parse(text, intFormatProvider);
 292                         return true;
 293
 294                     case ValidationDataType.Double:
 295                         IFormatProvider doubleFormatProvider = (cultureInvariant) ?
 296                             NumberFormatInfo.InvariantInfo :
 297                             NumberFormatInfo.CurrentInfo;
 298                         value = Double.Parse(text, doubleFormatProvider);
 299                         return true;
 300
 301                     case ValidationDataType.Date:
 302
 303                         IFormatProvider dateFormatProvider = (cultureInvariant) ?
 304                             DateTimeFormatInfo.InvariantInfo :
 305                             DateTimeFormatInfo.CurrentInfo;
 306
 307                         value = DateTime.Parse(text, dateFormatProvider);
 308                         return true;
 309
 310                     case ValidationDataType.Currency:
 311                         IFormatProvider currencyFormatProvider = (cultureInvariant) ?
 312                             NumberFormatInfo.InvariantInfo :
 313                             NumberFormatInfo.CurrentInfo;
 314                         value = Decimal.Parse(text, NumberStyles.Currency, currencyFormatProvider);
 315                         return true;
 316
 317                     default:
 318                         value = null;
 319                         return false;
 320                 }
 321             }
 322             catch
 323             {
 324                 value = null;
 325                 return false;
 326             }
 327                 }
 328         }
 329
 330 }
 331
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