mcs/class/System.Web.Mobile/System.Web.UI.MobileControls.Adapters/ControlAdapter.cs

   1
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   9 // the following conditions:
  10 //
  11 // The above copyright notice and this permission notice shall be
  12 // included in all copies or substantial portions of the Software.
  13 //
  14 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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  21 //
  22 /**
  23  * Project   : Mono
  24  * Namespace : System.Web.UI.MobileControls.Adapters
  25  * Class     : ControlAdapter
  26  * Author    : Gaurav Vaish
  27  *
  28  * Copyright : 2003 with Gaurav Vaish, and with
  29  *             Ximian Inc
  30  */
  31
  32 using System;
  33 using System.Collections.Specialized;
  34 using System.Web.Mobile;
  35 using System.Web.UI;
  36 using System.Web.UI.MobileControls;
  37
  38 namespace System.Web.UI.MobileControls.Adapters
  39 {
  40         public abstract class ControlAdapter : IControlAdapter
  41         {
  42                 private MobileControl control = null;
  43
  44                 protected static readonly int BackLabel = 0x00;
  45                 protected static readonly int GoLabel   = 0x01;
  46                 protected static readonly int OKLabel   = 0x02;
  47                 protected static readonly int MoreLabel = 0x03;
  48                 protected static readonly int OptionsLabel = 0x04;
  49                 protected static readonly int NextLabel = 0x05;
  50                 protected static readonly int PreviousLabel = 0x06;
  51                 protected static readonly int LinkLabel = 0x07;
  52                 protected static readonly int CallLabel = 0x08;
  53
  54                 private static string[] labelIDs = {
  55                         "ControlAdapter_Back",
  56                         "ControlAdapter_Go",
  57                         "ControlAdapter_OK",
  58                         "ControlAdapter_More",
  59                         "ControlAdapter_Options",
  60                         "ControlAdapter_Next",
  61                         "ControlAdapter_Previous",
  62                         "ControlAdapter_Link",
  63                         "ControlAdapter_Call"
  64                 };
  65
  66                 private string[] defaultLabels = null;
  67
  68                 public ControlAdapter()
  69                 {
  70                 }
  71
  72                 public MobileCapabilities Device
  73                 {
  74                         get
  75                         {
  76                                 if(Page != null)
  77                                 {
  78                                         return (MobileCapabilities) Page.Request.Browser;
  79                                 }
  80                                 return null;
  81                         }
  82                 }
  83
  84                 public System.Web.UI.MobileControls.Style Style
  85                 {
  86                         get
  87                         {
  88                                 return Control.Style;
  89                         }
  90                 }
  91
  92                 public virtual MobileControl Control
  93                 {
  94                         get
  95                         {
  96                                 return this.control;
  97                         }
  98                         set
  99                         {
 100                                 this.control = value;
 101                         }
 102                 }
 103
 104                 public int ItemWeight
 105                 {
 106                         get
 107                         {
 108                                 return ControlPager.UseDefaultWeight;
 109                         }
 110                 }
 111
 112                 public MobilePage Page
 113                 {
 114                         get
 115                         {
 116                                 if(Control != null)
 117                                         return Control.MobilePage;
 118                                 return null;
 119                         }
 120                 }
 121
 122                 public int VisibleWeight
 123                 {
 124                         get
 125                         {
 126                                 return ControlPager.UseDefaultWeight;
 127                         }
 128                 }
 129
 130                 public void CreateTemplatedUI(bool doDataBind)
 131                 {
 132                         Control.CreateDefaultTemplatedUI(doDataBind);
 133                 }
 134
 135                 public virtual bool HandlePostBackEvent(string eventArguments)
 136                 {
 137                         return false;
 138                 }
 139
 140                 public virtual void LoadAdapterState(object state)
 141                 {
 142                 }
 143
 144                 public virtual bool LoadPostData(string postKey,
 145                                NameValueCollection postCollection,
 146                                object privateControlData, out bool dataChanged)
 147                 {
 148                         dataChanged = false;
 149                         return false;
 150                 }
 151
 152                 public virtual void OnInit(EventArgs e)
 153                 {
 154                         return;
 155                 }
 156
 157                 public virtual void OnLoad(EventArgs e)
 158                 {
 159                         return;
 160                 }
 161
 162                 public virtual void OnPreRender(EventArgs e)
 163                 {
 164                         return;
 165                 }
 166
 167                 public virtual void OnUnload(EventArgs e)
 168                 {
 169                         return;
 170                 }
 171
 172                 public virtual void Render(HtmlTextWriter writer)
 173                 {
 174                         RenderChildren(writer);
 175                 }
 176
 177                 public virtual object SaveAdapterState()
 178                 {
 179                         return null;
 180                 }
 181
 182                 protected void RenderChildren(HtmlTextWriter writer)
 183                 {
 184                         if(Control != null && Control.HasControls())
 185                         {
 186                                 foreach(Control cCtrl in Control.Controls)
 187                                 {
 188                                         cCtrl.RenderControl(writer);
 189                                 }
 190                                 if(Control.Controls.GetEnumerator() is IDisposable)
 191                                 {
 192                                         ((IDisposable)Control.Controls.GetEnumerator()).Dispose();
 193                                 }
 194                         }
 195                 }
 196
 197                 protected int CalculateOptimumPageWeight(int defaultPageWeight)
 198                 {
 199                         int defWt = defaultPageWeight;
 200                         if(Device != null)
 201                         {
 202                                 string httpDefWt = Device[Constants.OptimumPageWeightParameter];
 203                                 if(httpDefWt != null)
 204                                 {
 205                                         try
 206                                         {
 207                                                 defWt = Convert.ToInt32(httpDefWt);
 208                                         } catch { }
 209                                 }
 210                         }
 211                         return -1;
 212                 }
 213
 214                 protected string GetDefaultLabel(int labelID)
 215                 {
 216                         if(labelID < 0 || labelID >= labelIDs.Length)
 217                         {
 218                                 // FIXME
 219                                 throw new ArgumentException("ControlAdapter" +
 220                                                             "_InvalidDefaultLabel");
 221                         }
 222                         string retVal = null;
 223                         if(Page != null)
 224                         {
 225                                 ControlAdapter ca = (ControlAdapter)Page.Adapter;
 226                                 if(defaultLabels == null)
 227                                 {
 228                                         defaultLabels = new string[labelIDs.Length];
 229                                         Array.Copy(labelIDs, defaultLabels, labelIDs.Length);
 230                                 }
 231                                 retVal = defaultLabels[labelID];
 232                         }
 233                         if(retVal == null)
 234                         {
 235                                 retVal = labelIDs[labelID];
 236                         }
 237                         return retVal;
 238                 }
 239         }
 240 }