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

   1 //\r
   2 // System.Web.UI.WebControls.PagerSettings.cs\r
   3 //\r
   4 // Authors:\r
   5 //      Lluis Sanchez Gual (lluis@novell.com)\r
   6 //\r
   7 // (C) 2005 Novell, Inc (http://www.novell.com)\r
   8 //\r
   9 // Permission is hereby granted, free of charge, to any person obtaining\r
  10 // a copy of this software and associated documentation files (the\r
  11 // "Software"), to deal in the Software without restriction, including\r
  12 // without limitation the rights to use, copy, modify, merge, publish,\r
  13 // distribute, sublicense, and/or sell copies of the Software, and to\r
  14 // permit persons to whom the Software is furnished to do so, subject to\r
  15 // the following conditions:\r
  16 // \r
  17 // The above copyright notice and this permission notice shall be\r
  18 // included in all copies or substantial portions of the Software.\r
  19 // \r
  20 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,\r
  21 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF\r
  22 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND\r
  23 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE\r
  24 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION\r
  25 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION\r
  26 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.\r
  27 //\r
  28 // Copyright (C) 2004 Novell, Inc (http://www.novell.com)\r
  29 //\r
  30 \r
  31 #if NET_2_0\r
  32 \r
  33 using System.ComponentModel;\r
  34 using System.Security.Permissions;\r
  35 \r
  36 namespace System.Web.UI.WebControls\r
  37 {\r
  38         [TypeConverterAttribute (typeof(ExpandableObjectConverter))]\r
  39         [AspNetHostingPermissionAttribute (SecurityAction.LinkDemand, Level = AspNetHostingPermissionLevel.Minimal)]\r
  40         public sealed class PagerSettings: IStateManager\r
  41         {\r
  42                 StateBag ViewState = new StateBag ();\r
  43                 Control ctrl;\r
  44                 \r
  45                 public PagerSettings ()\r
  46                 {\r
  47                 }\r
  48                 \r
  49                 internal PagerSettings (Control ctrl)\r
  50                 {\r
  51                         this.ctrl = ctrl;\r
  52                 }\r
  53 \r
  54                 [WebCategoryAttribute ("Appearance")]\r
  55                 [NotifyParentPropertyAttribute (true)]\r
  56                 [UrlPropertyAttribute]\r
  57                 [DefaultValueAttribute ("")]\r
  58                 [EditorAttribute ("System.Web.UI.Design.ImageUrlEditor, " + Consts.AssemblySystem_Design, "System.Drawing.Design.UITypeEditor, " + Consts.AssemblySystem_Drawing)]\r
  59                 public string FirstPageImageUrl {\r
  60                         get {\r
  61                                 object ob = ViewState ["FirstPageImageUrl"];\r
  62                                 if (ob != null) return (string) ob;\r
  63                                 return string.Empty;\r
  64                         }\r
  65                         set {\r
  66                                 ViewState ["FirstPageImageUrl"] = value;\r
  67                                 RaisePropertyChanged ();\r
  68                         }\r
  69                 }\r
  70         \r
  71                 [WebCategoryAttribute ("Appearance")]\r
  72                 [DefaultValueAttribute ("&lt;&lt;")]\r
  73                 [NotifyParentPropertyAttribute (true)]\r
  74                 public string FirstPageText {\r
  75                         get {\r
  76                                 object ob = ViewState ["FirstPageText"];\r
  77                                 if (ob != null) return (string) ob;\r
  78                                 return "&lt;&lt;";\r
  79                         }\r
  80                         set {\r
  81                                 ViewState ["FirstPageText"] = value;\r
  82                                 RaisePropertyChanged ();\r
  83                         }\r
  84                 }\r
  85         \r
  86                 [WebCategoryAttribute ("Appearance")]\r
  87                 [NotifyParentPropertyAttribute (true)]\r
  88                 [UrlPropertyAttribute]\r
  89                 [DefaultValueAttribute ("")]\r
  90                 [EditorAttribute ("System.Web.UI.Design.ImageUrlEditor, " + Consts.AssemblySystem_Design, "System.Drawing.Design.UITypeEditor, " + Consts.AssemblySystem_Drawing)]\r
  91                 public string LastPageImageUrl {\r
  92                         get {\r
  93                                 object ob = ViewState ["LastPageImageUrl"];\r
  94                                 if (ob != null) return (string) ob;\r
  95                                 return string.Empty;\r
  96                         }\r
  97                         set {\r
  98                                 ViewState ["LastPageImageUrl"] = value;\r
  99                                 RaisePropertyChanged ();\r
 100                         }\r
 101                 }\r
 102         \r
 103                 [NotifyParentPropertyAttribute (true)]\r
 104                 [WebCategoryAttribute ("Appearance")]\r
 105                 [DefaultValueAttribute ("&gt;&gt;")]\r
 106                 public string LastPageText {\r
 107                         get {\r
 108                                 object ob = ViewState ["LastPageText"];\r
 109                                 if (ob != null) return (string) ob;\r
 110                                 return "&gt;&gt;";\r
 111                         }\r
 112                         set {\r
 113                                 ViewState ["LastPageText"] = value;\r
 114                                 RaisePropertyChanged ();\r
 115                         }\r
 116                 }\r
 117         \r
 118                 [NotifyParentPropertyAttribute (true)]\r
 119                 [WebCategoryAttribute ("Appearance")]\r
 120                 [DefaultValueAttribute (PagerButtons.Numeric)]\r
 121                 public PagerButtons Mode {\r
 122                         get {\r
 123                                 object ob = ViewState ["Mode"];\r
 124                                 if (ob != null) return (PagerButtons) ob;\r
 125                                 return PagerButtons.Numeric;\r
 126                         }\r
 127                         set {\r
 128                                 ViewState ["Mode"] = value;\r
 129                                 RaisePropertyChanged ();\r
 130                         }\r
 131                 }\r
 132         \r
 133                 [WebCategoryAttribute ("Appearance")]\r
 134                 [NotifyParentPropertyAttribute (true)]\r
 135                 [UrlPropertyAttribute]\r
 136                 [DefaultValueAttribute ("")]\r
 137                 [EditorAttribute ("System.Web.UI.Design.ImageUrlEditor, " + Consts.AssemblySystem_Design, "System.Drawing.Design.UITypeEditor, " + Consts.AssemblySystem_Drawing)]\r
 138                 public string NextPageImageUrl {\r
 139                         get {\r
 140                                 object ob = ViewState ["NextPageImageUrl"];\r
 141                                 if (ob != null) return (string) ob;\r
 142                                 return string.Empty;\r
 143                         }\r
 144                         set {\r
 145                                 ViewState ["NextPageImageUrl"] = value;\r
 146                                 RaisePropertyChanged ();\r
 147                         }\r
 148                 }\r
 149 \r
 150                 [WebCategoryAttribute ("Appearance")]\r
 151                 [NotifyParentPropertyAttribute (true)]\r
 152                 [DefaultValueAttribute ("&gt;")]\r
 153                 public string NextPageText {\r
 154                         get {\r
 155                                 object ob = ViewState ["NextPageText"];\r
 156                                 if (ob != null) return (string) ob;\r
 157                                 return "&gt;";\r
 158                         }\r
 159                         set {\r
 160                                 ViewState ["NextPageText"] = value;\r
 161                                 RaisePropertyChanged ();\r
 162                         }\r
 163                 }\r
 164         \r
 165                 [WebCategoryAttribute ("Behavior")]\r
 166                 [NotifyParentPropertyAttribute (true)]\r
 167                 [DefaultValueAttribute (10)]\r
 168                 public int PageButtonCount {\r
 169                         get {\r
 170                                 object ob = ViewState ["PageButtonCount"];\r
 171                                 if (ob != null) return (int) ob;\r
 172                                 return 10;\r
 173                         }\r
 174                         set {\r
 175                                 ViewState ["PageButtonCount"] = value;\r
 176                                 RaisePropertyChanged ();\r
 177                         }\r
 178                 }\r
 179         \r
 180                 [WebCategoryAttribute ("Layout")]\r
 181                 [DefaultValueAttribute (PagerPosition.Bottom)]\r
 182                 [NotifyParentPropertyAttribute (true)]\r
 183                 public PagerPosition Position {\r
 184                         get {\r
 185                                 object ob = ViewState ["Position"];\r
 186                                 if (ob != null) return (PagerPosition) ob;\r
 187                                 return PagerPosition.Bottom;\r
 188                         }\r
 189                         set {\r
 190                                 ViewState ["Position"] = value;\r
 191                         }\r
 192                 }\r
 193         \r
 194                 [WebCategoryAttribute ("Appearance")]\r
 195                 [NotifyParentPropertyAttribute (true)]\r
 196                 [UrlPropertyAttribute]\r
 197                 [DefaultValueAttribute ("")]\r
 198                 [EditorAttribute ("System.Web.UI.Design.ImageUrlEditor, " + Consts.AssemblySystem_Design, "System.Drawing.Design.UITypeEditor, " + Consts.AssemblySystem_Drawing)]\r
 199                 public string PreviousPageImageUrl {\r
 200                         get {\r
 201                                 object ob = ViewState ["PreviousPageImageUrl"];\r
 202                                 if (ob != null) return (string) ob;\r
 203                                 return string.Empty;\r
 204                         }\r
 205                         set {\r
 206                                 ViewState ["PreviousPageImageUrl"] = value;\r
 207                                 RaisePropertyChanged ();\r
 208                         }\r
 209                 }\r
 210         \r
 211                 [WebCategoryAttribute ("Appearance")]\r
 212                 [DefaultValueAttribute ("&lt;")]\r
 213                 [NotifyParentPropertyAttribute (true)]\r
 214                 public string PreviousPageText {\r
 215                         get {\r
 216                                 object ob = ViewState ["PreviousPageText"];\r
 217                                 if (ob != null) return (string) ob;\r
 218                                 return "&lt;";\r
 219                         }\r
 220                         set {\r
 221                                 ViewState ["PreviousPageText"] = value;\r
 222                                 RaisePropertyChanged ();\r
 223                         }\r
 224                 }\r
 225         \r
 226                 [WebCategoryAttribute ("Appearance")]\r
 227                 [DefaultValueAttribute (true)]\r
 228                 [NotifyParentPropertyAttribute (true)]\r
 229                 public bool Visible {\r
 230                         get {\r
 231                                 object ob = ViewState ["Visible"];\r
 232                                 if (ob != null) return (bool) ob;\r
 233                                 return true;\r
 234                         }\r
 235                         set {\r
 236                                 ViewState ["Visible"] = value;\r
 237                         }\r
 238                 }\r
 239 \r
 240                 public event EventHandler PropertyChanged;\r
 241 \r
 242                 void RaisePropertyChanged ()\r
 243                 {\r
 244                         if (PropertyChanged != null)\r
 245                                 PropertyChanged (this, EventArgs.Empty);\r
 246                 }\r
 247 \r
 248                 public override string ToString ()\r
 249                 {\r
 250                         return string.Empty;\r
 251                 }\r
 252 \r
 253                 void IStateManager.LoadViewState (object savedState)\r
 254                 {\r
 255                         ViewState.LoadViewState (savedState);\r
 256                 }\r
 257                 \r
 258                 object IStateManager.SaveViewState ()\r
 259                 {\r
 260                         return ViewState.SaveViewState();\r
 261                 }\r
 262                 \r
 263                 void IStateManager.TrackViewState ()\r
 264                 {\r
 265                         ViewState.TrackViewState();\r
 266                 }\r
 267                 \r
 268                 bool IStateManager.IsTrackingViewState\r
 269                 {\r
 270                         get { return ViewState.IsTrackingViewState; }\r
 271                 }\r
 272                 \r
 273                 internal Table CreatePagerControl (int currentPage, int pageCount)\r
 274                 {\r
 275                         Table table = new Table ();\r
 276                         TableRow row = new TableRow ();\r
 277                         table.Rows.Add (row);\r
 278 \r
 279                         int buttonCount = (Mode == PagerButtons.Numeric || Mode == PagerButtons.NumericFirstLast) ? PageButtonCount : 1;\r
 280                         int first = buttonCount * (currentPage / buttonCount);\r
 281                         int last = first + buttonCount;\r
 282                         if (last > pageCount) {\r
 283                                 last = pageCount;\r
 284                                 if (last - first < buttonCount)\r
 285                                         first = last - buttonCount;\r
 286                                 if (first < 0)\r
 287                                         first = 0;\r
 288                         }\r
 289 \r
 290                         // First button\r
 291                         if (Mode == PagerButtons.NumericFirstLast || Mode == PagerButtons.NextPreviousFirstLast) {\r
 292                                 if (first > 0)\r
 293                                         row.Cells.Add (CreateCell (FirstPageText, FirstPageImageUrl, "Page", "First"));\r
 294                         }\r
 295 \r
 296                         // Prev button\r
 297                         if (Mode == PagerButtons.NextPrevious || Mode == PagerButtons.NextPreviousFirstLast) {\r
 298                                 if (first > 0)\r
 299                                         row.Cells.Add (CreateCell (PreviousPageText, PreviousPageImageUrl, "Page", "Prev"));\r
 300                         }\r
 301 \r
 302                         // Numbers\r
 303                         if (Mode == PagerButtons.Numeric || Mode == PagerButtons.NumericFirstLast) {\r
 304                                 if (first > 0)\r
 305                                         row.Cells.Add (CreateCell ("...", string.Empty, "Page", first.ToString ()));\r
 306                                 for (int n = first; n < last; n++)\r
 307                                         row.Cells.Add (CreateCell ((n + 1).ToString (), string.Empty, (n != currentPage) ? "Page" : "", (n != currentPage) ? (n + 1).ToString () : ""));\r
 308                                 if (last < pageCount)\r
 309                                         row.Cells.Add (CreateCell ("...", string.Empty, "Page", (last + 1).ToString ()));\r
 310                         }\r
 311 \r
 312                         // Next button\r
 313                         if (Mode == PagerButtons.NextPrevious || Mode == PagerButtons.NextPreviousFirstLast) {\r
 314                                 if (last < pageCount)\r
 315                                         row.Cells.Add (CreateCell (NextPageText, NextPageImageUrl, "Page", "Next"));\r
 316                         }\r
 317 \r
 318                         // Last button\r
 319                         if (Mode == PagerButtons.NumericFirstLast || Mode == PagerButtons.NextPreviousFirstLast) {\r
 320                                 if (last < pageCount)\r
 321                                         row.Cells.Add (CreateCell (LastPageText, LastPageImageUrl, "Page", "Last"));\r
 322                         }\r
 323                         \r
 324                         return table;\r
 325                 }\r
 326 \r
 327                 TableCell CreateCell (string text, string image, string command, string argument) {\r
 328                         TableCell cell = new TableCell ();\r
 329 \r
 330                         Control button;\r
 331                         if (String.IsNullOrEmpty (command)) {\r
 332                                 Label l = new Label ();\r
 333                                 l.Text = text;\r
 334                                 button = l;\r
 335                         }\r
 336                         else\r
 337                                 button = (Control)DataControlButton.CreateButton (String.IsNullOrEmpty (image) ? ButtonType.Link : ButtonType.Image, ctrl, text, image, command, argument, true);\r
 338 \r
 339                         cell.Controls.Add (button);\r
 340                         return cell;\r
 341                 }\r
 342         }\r
 343 }\r
 344 \r
 345 #endif\r