//
// System.Web.UI.WebControls.Literal.cs
//
// Authors:
// Jackson Harper (jackson@ximian.com)
//
// (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
// "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.ComponentModel;
using System.Drawing;
using System.Globalization;
using System.Collections.Specialized;
using System.Security.Permissions;
using System.Web.Util;
namespace System.Web.UI.WebControls{
// CAS
[AspNetHostingPermissionAttribute (SecurityAction.LinkDemand, Level = AspNetHostingPermissionLevel.Minimal)]
[AspNetHostingPermissionAttribute (SecurityAction.InheritanceDemand, Level = AspNetHostingPermissionLevel.Minimal)]
// attributes
[ValidationProperty("SelectedItem")]
#if NET_2_0
[SupportsEventValidation]
#endif
public class ListBox : ListControl, IPostBackDataHandler {
public ListBox ()
{
}
[Browsable(false)]
#if NET_2_0 && HAVE_CONTROL_ADAPTERS
public virtual new
#else
public override
#endif
Color BorderColor {
get { return base.BorderColor; }
set { base.BorderColor = value; }
}
[Browsable(false)]
#if NET_2_0 && HAVE_CONTROL_ADAPTERS
public virtual new
#else
public override
#endif
BorderStyle BorderStyle {
get { return base.BorderStyle; }
set { base.BorderStyle = value; }
}
[Browsable(false)]
#if NET_2_0 && HAVE_CONTROL_ADAPTERS
public virtual new
#else
public override
#endif
Unit BorderWidth {
get { return base.BorderWidth; }
set { base.BorderWidth = value; }
}
#if ONLY_1_1
[Bindable(true)]
#endif
[DefaultValue(4)]
[WebSysDescription ("")]
[WebCategory ("Appearance")]
public virtual int Rows {
get {
return ViewState.GetInt ("Rows", 4);
}
set {
if (value < 1 || value > 2000)
throw new ArgumentOutOfRangeException ("value");
ViewState ["Rows"] = value;
}
}
[DefaultValue(ListSelectionMode.Single)]
[WebSysDescription ("")]
[WebCategory ("Behavior")]
public virtual ListSelectionMode SelectionMode {
get {
return (ListSelectionMode) ViewState.GetInt ("SelectionMode",
(int) ListSelectionMode.Single);
}
set {
if (!Enum.IsDefined (typeof (ListSelectionMode), value))
throw new ArgumentOutOfRangeException ("value");
ViewState ["SelectionMode"] = value;
}
}
#if ONLY_1_1
[Bindable(false)]
[Browsable(false)]
[DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
[EditorBrowsable(EditorBrowsableState.Never)]
public override string ToolTip {
get { return String.Empty; }
set { /* Tooltip is always String.Empty */ }
}
#endif
#if NET_2_0
public virtual int[] GetSelectedIndices ()
{
return (int []) GetSelectedIndicesInternal ().ToArray (typeof (int));
}
#endif
protected override void AddAttributesToRender (HtmlTextWriter writer)
{
if (Page != null)
Page.VerifyRenderingInServerForm (this);
#if NET_2_0
if (ID != null)
writer.AddAttribute (HtmlTextWriterAttribute.Name, UniqueID);
#else
writer.AddAttribute (HtmlTextWriterAttribute.Name, UniqueID);
#endif
if (AutoPostBack) {
#if NET_2_0
string onchange = Page.ClientScript.GetPostBackEventReference (GetPostBackOptions (), true);
onchange = String.Concat ("setTimeout('", onchange.Replace ("\\", "\\\\").Replace ("'", "\\'"), "', 0)");
writer.AddAttribute (HtmlTextWriterAttribute.Onchange, BuildScriptAttribute ("onchange", onchange));
#else
writer.AddAttribute (HtmlTextWriterAttribute.Onchange,
BuildScriptAttribute ("onchange",
Page.ClientScript.GetPostBackClientHyperlink (this, "")));
#endif
}
if (SelectionMode == ListSelectionMode.Multiple)
writer.AddAttribute (HtmlTextWriterAttribute.Multiple,
"multiple", false);
writer.AddAttribute (HtmlTextWriterAttribute.Size,
Rows.ToString (Helpers.InvariantCulture));
base.AddAttributesToRender (writer);
}
#if NET_2_0
PostBackOptions GetPostBackOptions () {
PostBackOptions options = new PostBackOptions (this);
options.ActionUrl = null;
options.ValidationGroup = null;
options.Argument = String.Empty;
options.RequiresJavaScriptProtocol = false;
options.ClientSubmit = true;
options.PerformValidation = CausesValidation && Page != null && Page.AreValidatorsUplevel (ValidationGroup);
if (options.PerformValidation)
options.ValidationGroup = ValidationGroup;
return options;
}
#endif
#if ONLY_1_1
protected override void RenderContents (HtmlTextWriter writer)
{
foreach (ListItem item in Items) {
if (item.Selected) {
writer.AddAttribute (HtmlTextWriterAttribute.Selected, "selected", false);
}
writer.AddAttribute (HtmlTextWriterAttribute.Value, item.Value, true);
writer.RenderBeginTag (HtmlTextWriterTag.Option);
string encoded = HttpUtility.HtmlEncode (item.Text);
writer.Write (encoded);
writer.RenderEndTag ();
writer.WriteLine ();
}
}
#endif
#if NET_2_0
protected internal
#else
protected
#endif
override void OnPreRender (EventArgs e)
{
base.OnPreRender (e);
if (Page != null && Enabled)
Page.RegisterRequiresPostBack (this);
}
#if NET_2_0
protected virtual
#endif
bool LoadPostData (string postDataKey, NameValueCollection postCollection)
{
#if NET_2_0
EnsureDataBound ();
#endif
string [] values = postCollection.GetValues (postDataKey);
if (values == null || values.Length == 0) {
int prev_index = SelectedIndex;
SelectedIndex = -1;
return (prev_index != -1);
}
#if NET_2_0
ValidateEvent (UniqueID, values [0]);
#endif
if (SelectionMode == ListSelectionMode.Single)
return SelectSingle (values);
return SelectMultiple (values);
}
bool SelectSingle (string [] values)
{
string val = values [0];
int idx = Items.IndexOf (val);
int prev_index = SelectedIndex;
if (idx != prev_index) {
// This will set both the index value and the item.Selected property
SelectedIndex = idx;
return true;
}
return false;
}
bool SelectMultiple (string [] values)
{
ArrayList prev_selected = GetSelectedIndicesInternal ();
ClearSelection ();
foreach (string val in values) {
ListItem item = Items.FindByValue (val);
if (item != null)
item.Selected = true;
}
ArrayList new_selection = GetSelectedIndicesInternal ();
int i = prev_selected.Count;
if (new_selection.Count != i)
return true;
while (--i >= 0) {
if ((int) prev_selected [i] != (int) new_selection [i])
return true;
}
return false;
}
#if NET_2_0
protected virtual
#endif
void RaisePostDataChangedEvent ()
{
#if NET_2_0
if (CausesValidation)
Page.Validate (ValidationGroup);
#endif
OnSelectedIndexChanged (EventArgs.Empty);
}
bool IPostBackDataHandler.LoadPostData (string postDataKey,
NameValueCollection postCollection)
{
return LoadPostData (postDataKey, postCollection);
}
void IPostBackDataHandler.RaisePostDataChangedEvent ()
{
RaisePostDataChangedEvent ();
}
#if NET_2_0
protected internal override void VerifyMultiSelect()
{
//by default the ListControl will throw an exception in this method,
//therefor we should override the method if the class is supporting
//MultiSelect option.
if (this.SelectionMode != ListSelectionMode.Multiple)
throw new HttpException("Multiple select option is not supported");
}
#endif
}
}
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