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

   1 //
   2 // System.Web.UI.WebControls.DataControlButton.cs
   3 //
   4 // Authors:
   5 //      Lluis Sanchez Gual (lluis@novell.com)
   6 //
   7 // (C) 2005-2010 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 using System;
  29 using System.Web;
  30 using System.Web.UI;
  31 using System.ComponentModel;
  32 using System.ComponentModel.Design;
  33 using System.Drawing;
  34
  35 namespace System.Web.UI.WebControls
  36 {
  37         internal interface IDataControlButton : IButtonControl
  38         {
  39                 Control Container { get; set;}
  40                 string ImageUrl { get;set;}
  41                 bool AllowCallback { get; set;}
  42                 ButtonType ButtonType { get;}
  43         }
  44
  45         [SupportsEventValidation]
  46         internal class DataControlButton : Button, IDataControlButton
  47         {
  48                 public static IDataControlButton CreateButton (ButtonType type, Control container, string text, string image, string command, string commandArg, bool allowCallback)
  49                 {
  50                         IDataControlButton btn;
  51
  52                         switch (type) {
  53                                 case ButtonType.Link:
  54                                         btn = new DataControlLinkButton ();
  55                                         break;
  56                                 case ButtonType.Image:
  57                                         btn = new DataControlImageButton ();
  58                                         btn.ImageUrl = image;
  59                                         break;
  60                                 default:
  61                                         btn = new DataControlButton ();
  62                                         break;
  63                         }
  64
  65                         btn.Container = container;
  66                         btn.CommandName = command;
  67                         btn.CommandArgument = commandArg;
  68                         btn.Text = text;
  69                         btn.CausesValidation = false;
  70                         btn.AllowCallback = allowCallback;
  71
  72                         return btn;
  73                 }
  74
  75                 Control _container;
  76
  77                 public Control Container {
  78                         get { return _container; }
  79                         set { _container = value; }
  80                 }
  81
  82                 public string ImageUrl {
  83                         get { return String.Empty; }
  84                         set { }
  85                 }
  86
  87                 public bool AllowCallback {
  88                         get { return ViewState.GetBool ("AllowCallback", true); }
  89                         set { ViewState ["AllowCallback"] = value; }
  90                 }
  91
  92                 public ButtonType ButtonType {
  93                         get { return ButtonType.Button; }
  94                 }
  95
  96                 public override bool UseSubmitBehavior {
  97                         get { return false; }
  98                         set { throw new NotSupportedException (); }
  99                 }
 100
 101                 internal override string GetClientScriptEventReference ()
 102                 {
 103                         if (AllowCallback) {
 104                                 ICallbackContainer ccner = Container as ICallbackContainer;
 105                                 if (ccner != null)
 106                                         return ccner.GetCallbackScript (this, CommandName + "$" + CommandArgument);
 107                         }
 108                         return base.GetClientScriptEventReference ();
 109                 }
 110
 111                 protected override PostBackOptions GetPostBackOptions ()
 112                 {
 113                         IPostBackContainer pcner = Container as IPostBackContainer;
 114                         if (pcner != null)
 115                                 return pcner.GetPostBackOptions (this);
 116                         return base.GetPostBackOptions ();
 117                 }
 118         }
 119
 120         internal class DataControlLinkButton : LinkButton, IDataControlButton
 121         {
 122                 Control _container;
 123
 124                 public Control Container {
 125                         get { return _container; }
 126                         set { _container = value; }
 127                 }
 128
 129                 public string ImageUrl {
 130                         get { return String.Empty; }
 131                         set { }
 132                 }
 133
 134                 public bool AllowCallback {
 135                         get { return ViewState.GetBool ("AllowCallback", true); }
 136                         set { ViewState ["AllowCallback"] = value; }
 137                 }
 138
 139                 public ButtonType ButtonType {
 140                         get { return ButtonType.Link; }
 141                 }
 142
 143                 protected internal override void Render (HtmlTextWriter writer)
 144                 {
 145                         EnsureForeColor ();
 146                         if (AllowCallback) {
 147                                 ICallbackContainer ccner = Container as ICallbackContainer;
 148                                 if (ccner != null)
 149                                         OnClientClick = ClientScriptManager.EnsureEndsWithSemicolon (OnClientClick) + ccner.GetCallbackScript (this, CommandName + "$" + CommandArgument);
 150                         }
 151
 152                         base.Render (writer);
 153                 }
 154
 155                 void EnsureForeColor ()
 156                 {
 157                         if (ForeColor != Color.Empty)
 158                                 return;
 159
 160                         for (Control parent = Parent; parent != null; parent = parent.Parent) {
 161                                 WebControl wc = parent as WebControl;
 162                                 if (wc != null && wc.ForeColor != Color.Empty) {
 163                                         ForeColor = wc.ForeColor;
 164                                         break;
 165                                 }
 166                                 if (parent == Container)
 167                                         break;
 168                         }
 169                 }
 170
 171                 protected override PostBackOptions GetPostBackOptions ()
 172                 {
 173                         IPostBackContainer pcner = Container as IPostBackContainer;
 174                         if (pcner != null)
 175                                 return pcner.GetPostBackOptions (this);
 176                         return base.GetPostBackOptions ();
 177                 }
 178
 179         }
 180
 181         internal class DataControlImageButton : ImageButton, IDataControlButton
 182         {
 183                 Control _container;
 184
 185                 public Control Container {
 186                         get { return _container; }
 187                         set { _container = value; }
 188                 }
 189
 190                 public bool AllowCallback {
 191                         get { return ViewState.GetBool ("AllowCallback", true); }
 192                         set { ViewState ["AllowCallback"] = value; }
 193                 }
 194
 195                 public ButtonType ButtonType {
 196                         get { return ButtonType.Image; }
 197                 }
 198
 199                 internal override string GetClientScriptEventReference ()
 200                 {
 201                         if (AllowCallback) {
 202                                 ICallbackContainer ccner = Container as ICallbackContainer;
 203                                 if (ccner != null)
 204                                         return ccner.GetCallbackScript (this, CommandName + "$" + CommandArgument);
 205                         }
 206                         return base.GetClientScriptEventReference ();
 207                 }
 208
 209                 protected override PostBackOptions GetPostBackOptions ()
 210                 {
 211                         IPostBackContainer pcner = Container as IPostBackContainer;
 212                         if (pcner != null)
 213                                 return pcner.GetPostBackOptions (this);
 214                         return base.GetPostBackOptions ();
 215                 }
 216
 217         }
 218 }
 219