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//
// System.Web.UI.WebControls.CheckBoxField.cs
//
// Authors:
// Lluis Sanchez Gual (lluis@novell.com)
//
// (C) 2005-2010 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
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
//
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
using System.Collections;
using System.Collections.Specialized;
using System.Web.UI;
using System.ComponentModel;
using System.Security.Permissions;
namespace System.Web.UI.WebControls
{
[AspNetHostingPermissionAttribute (SecurityAction.LinkDemand, Level = AspNetHostingPermissionLevel.Minimal)]
[AspNetHostingPermissionAttribute (SecurityAction.InheritanceDemand, Level = AspNetHostingPermissionLevel.Minimal)]
public class CheckBoxField : BoundField
{
[EditorBrowsableAttribute (EditorBrowsableState.Never)]
[BrowsableAttribute (false)]
[DesignerSerializationVisibilityAttribute (DesignerSerializationVisibility.Hidden)]
public override bool ApplyFormatInEditMode {
get { throw GetNotSupportedPropException ("ApplyFormatInEditMode"); }
set { throw GetNotSupportedPropException ("ApplyFormatInEditMode"); }
}
[EditorBrowsableAttribute (EditorBrowsableState.Never)]
[BrowsableAttribute (false)]
[DesignerSerializationVisibilityAttribute (DesignerSerializationVisibility.Hidden)]
public override bool ConvertEmptyStringToNull {
get { throw GetNotSupportedPropException ("ConvertEmptyStringToNull"); }
set { throw GetNotSupportedPropException ("ConvertEmptyStringToNull"); }
}
[TypeConverter ("System.Web.UI.Design.DataSourceBooleanViewSchemaConverter, " + Consts.AssemblySystem_Design)]
public override string DataField {
get { return base.DataField; }
set { base.DataField = value; }
}
[EditorBrowsableAttribute (EditorBrowsableState.Never)]
[BrowsableAttribute (false)]
[DesignerSerializationVisibilityAttribute (DesignerSerializationVisibility.Hidden)]
public override string DataFormatString {
get { throw GetNotSupportedPropException ("DataFormatString"); }
set { throw GetNotSupportedPropException ("DataFormatString"); }
}
[EditorBrowsableAttribute (EditorBrowsableState.Never)]
[BrowsableAttribute (false)]
[DesignerSerializationVisibilityAttribute (DesignerSerializationVisibility.Hidden)]
public override bool HtmlEncode {
get { throw GetNotSupportedPropException ("HtmlEncode"); }
set { throw GetNotSupportedPropException ("HtmlEncode"); }
}
[Browsable (false)]
[DesignerSerializationVisibility (DesignerSerializationVisibility.Hidden)]
[EditorBrowsable (EditorBrowsableState.Never)]
public override bool HtmlEncodeFormatString {
get { return base.HtmlEncodeFormatString; }
set { base.HtmlEncodeFormatString = value; }
}
[EditorBrowsableAttribute (EditorBrowsableState.Never)]
[BrowsableAttribute (false)]
[DesignerSerializationVisibilityAttribute (DesignerSerializationVisibility.Hidden)]
public override string NullDisplayText {
get { throw GetNotSupportedPropException ("NullDisplayText"); }
set { throw GetNotSupportedPropException ("NullDisplayText"); }
}
protected override bool SupportsHtmlEncode {
get { return false; }
}
[LocalizableAttribute (true)]
[DefaultValueAttribute ("")]
[WebSysDescription ("")]
[WebCategoryAttribute ("Appearance")]
public virtual string Text {
get { return ViewState.GetString ("Text", String.Empty); }
set {
ViewState ["Text"] = value;
OnFieldChanged ();
}
}
protected override void InitializeDataCell (DataControlFieldCell cell, DataControlRowState rowState)
{
bool editable = IsEditable (rowState);
CheckBox box = new CheckBox ();
box.Enabled = editable;
if (editable)
box.ToolTip = HeaderText;
box.Text = Text;
cell.Controls.Add (box);
}
public override void ExtractValuesFromCell (IOrderedDictionary dictionary,
DataControlFieldCell cell, DataControlRowState rowState, bool includeReadOnly)
{
bool editable = IsEditable (rowState);
if (editable || includeReadOnly) {
CheckBox box = (CheckBox) cell.Controls [0];
dictionary [DataField] = box.Checked;
}
}
protected override void OnDataBindField (object sender, EventArgs e)
{
try {
Control container = (Control) sender;
object val = GetValue (container.NamingContainer);
CheckBox box = sender as CheckBox;
if (box == null) {
DataControlFieldCell cell = sender as DataControlFieldCell;
if (cell != null) {
ControlCollection controls = cell.Controls;
int ccount = controls != null ? controls.Count : 0;
if (ccount == 1)
box = controls [0] as CheckBox;
if (box == null)
return;
}
}
if (box == null)
throw new HttpException ("CheckBox field '" + DataField + "' contains a control that isn't a CheckBox. Override OnDataBindField to inherit from CheckBoxField and add different controls.");
if (val != null && val != DBNull.Value)
box.Checked = (bool) val;
else {
if (string.IsNullOrEmpty (DataField)) {
box.Visible = false;
return;
}
}
if (!box.Visible)
box.Visible = true;
} catch (HttpException) {
throw;
} catch (Exception ex) {
throw new HttpException (ex.Message, ex);
}
}
protected override object GetDesignTimeValue ()
{
return true;
}
protected override DataControlField CreateField ()
{
return new CheckBoxField ();
}
protected override void CopyProperties (DataControlField newField)
{
CheckBoxField field = (CheckBoxField) newField;
field.DataField = DataField;
field.ReadOnly = ReadOnly;
field.Text = Text;
}
public override void ValidateSupportsCallback ()
{
// why override?
}
}
}
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