//
// System.Web.UI.WebControls.BoundColumn.cs
//
-// Authors:
-// Gaurav Vaish (gvaish@iitk.ac.in)
-// Andreas Nahr (ClassDevelopment@A-SoftTech.com)
+// Author:
+// Dick Porter <dick@ximian.com>
//
-// (C) Gaurav Vaish (2002)
-// (C) 2003 Andreas Nahr
-//\r
-
+// Copyright (C) 2005 Novell, Inc (http://www.novell.com)
//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
-using System;
using System.ComponentModel;
-using System.Web;
-using System.Web.UI;
+using System.Security.Permissions;
-namespace System.Web.UI.WebControls
-{
- public class BoundColumn : DataGridColumn
- {
- public static readonly string thisExpr = "!";
+namespace System.Web.UI.WebControls {
- private bool boundFieldDescriptionValid;
- private string boundField;
- private string formatting;
-
- private PropertyDescriptor desc;
+ // CAS
+ [AspNetHostingPermission (SecurityAction.LinkDemand, Level = AspNetHostingPermissionLevel.Minimal)]
+ [AspNetHostingPermission (SecurityAction.InheritanceDemand, Level = AspNetHostingPermissionLevel.Minimal)]
+ public class BoundColumn : DataGridColumn
+ {
+ string data_format_string;
- public BoundColumn(): base()
+ public BoundColumn ()
{
}
- public override void Initialize()
- {
- base.Initialize();
-
- desc = null;
- boundField = DataField;
- formatting = DataFormatString;
- boundFieldDescriptionValid = false;
- }
+ public static readonly string thisExpr = "!";
- public override void InitializeCell(TableCell cell, int columnIndex, ListItemType itemType)
+ [DefaultValue("")]
+ [WebSysDescription ("")]
+ [WebCategory ("Misc")]
+ public virtual string DataField
{
- base.InitializeCell(cell, columnIndex, itemType);
-
- Control bindCtrl = null;
- Control toAdd = null;
- switch(itemType)
- {
- case ListItemType.Item : goto case ListItemType.SelectedItem;
- case ListItemType.AlternatingItem
- : goto case ListItemType.SelectedItem;
- case ListItemType.SelectedItem
- : if(DataField.Length != 0)
- bindCtrl = cell;
- break;
- case ListItemType.EditItem
- : if(!ReadOnly)
- {
- TextBox box = new TextBox();
- toAdd = box;
- if(DataField.Length != 0)
- bindCtrl = box;
- } else
- goto case ListItemType.SelectedItem;
-
- break;
+ get {
+ return ViewState.GetString ("DataField", String.Empty);
+ }
+ set {
+ ViewState ["DataField"] = value;
}
- if(toAdd != null)
- cell.Controls.Add(toAdd);
- if(bindCtrl != null)
- bindCtrl.DataBinding += new EventHandler(OnDataBindColumn);
- //throw new NotImplementedException();
}
-
- private void OnDataBindColumn(object sender, EventArgs e)
+
+ [DefaultValue("")]
+ [WebSysDescription ("")]
+ [WebCategory ("Misc")]
+ public virtual string DataFormatString
{
- Control senderCtrl = (Control)sender;
- DataGridItem item = (DataGridItem)senderCtrl.NamingContainer;
- object data = item.DataItem;
-
- if(!boundFieldDescriptionValid)
- {
- if(boundField != BoundColumn.thisExpr)
- {
- desc = TypeDescriptor.GetProperties(data).Find(boundField, true);
- if(desc == null && !DesignMode)
- {
- throw new HttpException(
- HttpRuntime.FormatResourceString("File_Not_Found",
- boundField));
- }
- boundFieldDescriptionValid = true;
- }
- }
- object value = data;
- string val = String.Empty;
- if(desc == null && DesignMode)
- {
- throw new NotImplementedException();
- } else
- {
- if(desc != null)
- value = desc.GetValue(data);
- val = FormatDataValue(value);
+ get {
+ return ViewState.GetString ("DataFormatString", String.Empty);
}
- if(senderCtrl is TableCell)
- {
- if(val.Length == 0)
- val = " ";
- ((TableCell)senderCtrl).Text = val;
- } else
- {
- ((TextBox)senderCtrl).Text = val;
+ set {
+ ViewState ["DataFormatString"] = value;
}
}
- [DefaultValue (""), WebCategory ("Misc")]
- [WebSysDescription ("The field that this column is bound to.")]
- public virtual string DataField
+ [DefaultValue(false)]
+ [WebSysDescription ("")]
+ [WebCategory ("Misc")]
+ public virtual bool ReadOnly
{
- get
- {
- object o = ViewState["DataField"];
- if(o != null)
- return (string)o;
- return String.Empty;
+ get {
+ return ViewState.GetBool ("ReadOnly", false);
}
- set
- {
- ViewState["DataField"] = value;
- OnColumnChanged();
+ set {
+ ViewState ["ReadOnly"] = value;
}
}
+
+ public override void Initialize ()
+ {
+ data_format_string = DataFormatString;
+ }
- [DefaultValue (""), WebCategory ("Misc")]
- [WebSysDescription ("A format string that is applied to the data value.")]
- public virtual string DataFormatString
+ public override void InitializeCell (TableCell cell, int columnIndex,
+ ListItemType itemType)
{
- get
- {
- object o = ViewState["DataFormatString"];
- if(o != null)
- return (string)o;
- return String.Empty;
- }
- set
- {
- ViewState["DataFormatString"] = value;
- OnColumnChanged();
+ base.InitializeCell (cell, columnIndex, itemType);
+
+ string df = DataField;
+
+ switch (itemType) {
+ case ListItemType.Item:
+ case ListItemType.SelectedItem:
+ case ListItemType.AlternatingItem:
+ if (df != null && df.Length != 0)
+ cell.DataBinding += new EventHandler (ItemDataBinding);
+ break;
+ case ListItemType.EditItem:
+ if (ReadOnly && df != null && df.Length != 0) {
+ cell.DataBinding += new EventHandler (ItemDataBinding);
+ break;
+ }
+ TextBox tb = new TextBox ();
+ if (df != null && df.Length != 0)
+ tb.DataBinding += new EventHandler (ItemDataBinding);
+ cell.Controls.Add (tb);
+ break;
}
}
- [DefaultValue (false), WebCategory ("Misc")]
- [WebSysDescription ("Determines if the databound field can only be displayed or also edited.")]
- public virtual bool ReadOnly
+ protected virtual string FormatDataValue (object dataValue)
{
- get
- {
- object o = ViewState["ReadOnly"];
- if(o != null)
- return (bool)o;
- return false;
- }
- set
- {
- ViewState["ReadOnly"] = value;
+ if (dataValue == null)
+ return "";
+
+ if (data_format_string == String.Empty)
+ return dataValue.ToString ();
+
+ return String.Format (data_format_string, dataValue);
+ }
+
+ string GetValueFromItem (DataGridItem item)
+ {
+ object val;
+ if (DataField != thisExpr) {
+ val = DataBinder.Eval (item.DataItem, DataField);
+ } else {
+ val = item.DataItem;
}
+
+ string text = FormatDataValue (val);
+ return (text != "" ? text : " ");
}
- protected virtual string FormatDataValue(Object dataValue)
+ void ItemDataBinding (object sender, EventArgs e)
{
- string retVal = String.Empty;
- if(dataValue != null)
- {
- if(formatting.Length == 0)
- retVal = dataValue.ToString();
- else
- retVal = String.Format(formatting, dataValue);
+ Control ctrl = (Control) sender;
+ string text = GetValueFromItem ((DataGridItem) ctrl.NamingContainer);
+
+ TableCell cell = sender as TableCell;
+ if (cell == null) {
+ TextBox tb = (TextBox) sender;
+ tb.Text = text;
+ } else {
+ cell.Text = text;
}
- return retVal;
}
}
}
+
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