Code:
/ Dotnetfx_Vista_SP2 / Dotnetfx_Vista_SP2 / 8.0.50727.4016 / DEVDIV / depot / DevDiv / releases / whidbey / NetFxQFE / ndp / fx / src / xsp / System / Web / UI / WebControls / RadioButton.cs / 1 / RadioButton.cs
//------------------------------------------------------------------------------
//
// Copyright (c) Microsoft Corporation. All rights reserved.
//
//-----------------------------------------------------------------------------
namespace System.Web.UI.WebControls {
using System;
using System.Web;
using System.Web.UI;
using System.Collections;
using System.Collections.Specialized;
using System.ComponentModel;
using System.Globalization;
using System.Security.Permissions;
///
/// Constructs a radio button and defines its
/// properties.
///
[
Designer("System.Web.UI.Design.WebControls.CheckBoxDesigner, " + AssemblyRef.SystemDesign),
SupportsEventValidation,
]
[AspNetHostingPermission(SecurityAction.LinkDemand, Level=AspNetHostingPermissionLevel.Minimal)]
[AspNetHostingPermission(SecurityAction.InheritanceDemand, Level=AspNetHostingPermissionLevel.Minimal)]
public class RadioButton : CheckBox, IPostBackDataHandler {
#if SHIPPINGADAPTERS
internal static readonly string AltSelectedText = "(o)";
internal static readonly string AltUnselectedText = "(_)";
#endif
private string _uniqueGroupName = null;
///
/// Initializes a new instance of the
///
public RadioButton() {
}
///
/// Gets or
/// sets the name of the group that the radio button belongs to.
///
[
DefaultValue(""),
WebCategory("Behavior"),
WebSysDescription(SR.RadioButton_GroupName),
Themeable(false),
]
public virtual string GroupName {
get {
string s = (string)ViewState["GroupName"];
return((s == null) ? String.Empty : s);
}
set {
ViewState["GroupName"] = value;
}
}
// Fully qualified GroupName for rendering purposes, to take care of conflicts
// between different naming containers
internal string UniqueGroupName {
get {
if (_uniqueGroupName == null) {
// For radio buttons, we must make the groupname unique, but can't just use the
// UniqueID because all buttons in a group must have the same name. So
// we replace the last part of the UniqueID with the group Name.
string name = GroupName;
string uid = UniqueID;
if (uid != null) {
int lastColon = uid.LastIndexOf(IdSeparator);
if (lastColon >= 0) {
if (name.Length > 0) {
name = uid.Substring(0, lastColon+1) + name;
}
else if (NamingContainer is RadioButtonList) {
// If GroupName is not set we simply use the naming
// container as the group name
name = uid.Substring(0, lastColon);
}
}
if (name.Length == 0) {
name = uid;
}
}
_uniqueGroupName = name;
}
return _uniqueGroupName;
}
}
///
///
internal string ValueAttribute {
get {
string valueAttr = Attributes["value"];
if (valueAttr == null) {
// VSWhidbey 146829. Always EnsureID so the valueAttribute will not change by
// call to ClientID which happens during Render.
EnsureID();
if (ID != null)
valueAttr = ID;
else
valueAttr = UniqueID;
}
return valueAttr;
}
}
///
/// Method of IPostBackDataHandler interface to process posted data.
/// RadioButton determines the posted radio group state.
///
bool IPostBackDataHandler.LoadPostData(String postDataKey, NameValueCollection postCollection) {
return LoadPostData(postDataKey, postCollection);
}
///
/// Method of IPostBackDataHandler interface to process posted data.
/// RadioButton determines the posted radio group state.
///
protected override bool LoadPostData(String postDataKey, NameValueCollection postCollection) {
string post = postCollection[UniqueGroupName];
bool valueChanged = false;
if ((post != null) && post.Equals(ValueAttribute)) {
ValidateEvent(UniqueGroupName, post);
if (Checked == false) {
Checked = true;
// only fire change event for RadioButton that is being checked
valueChanged = true;
}
}
else {
if (Checked == true) {
Checked = false;
}
}
return valueChanged;
}
///
/// Raises when posted data for a control has changed.
///
void IPostBackDataHandler.RaisePostDataChangedEvent() {
RaisePostDataChangedEvent();
}
///
/// Raises when posted data for a control has changed.
///
protected override void RaisePostDataChangedEvent() {
if (AutoPostBack && !Page.IsPostBackEventControlRegistered) {
// VSWhidbey 204824
Page.AutoPostBackControl = this;
if (CausesValidation) {
Page.Validate(ValidationGroup);
}
}
OnCheckedChanged(EventArgs.Empty);
}
///
/// This method is invoked just prior to rendering.
/// Register client script for handling postback if onChangeHandler is set.
///
protected internal override void OnPreRender(EventArgs e) {
// must call CheckBox PreRender
base.OnPreRender(e);
if (Page != null && !Checked && Enabled) {
Page.RegisterRequiresPostBack(this);
}
}
internal override void RenderInputTag(HtmlTextWriter writer, string clientID, string onClick) {
writer.AddAttribute(HtmlTextWriterAttribute.Id, clientID);
writer.AddAttribute(HtmlTextWriterAttribute.Type, "radio");
writer.AddAttribute(HtmlTextWriterAttribute.Name, UniqueGroupName);
writer.AddAttribute(HtmlTextWriterAttribute.Value, ValueAttribute);
if (Page != null) {
Page.ClientScript.RegisterForEventValidation(UniqueGroupName, ValueAttribute);
}
if (Checked)
writer.AddAttribute(HtmlTextWriterAttribute.Checked, "checked");
// ASURT 119141: Render disabled attribute on the INPUT tag (instead of the SPAN) so the checkbox actually gets disabled when Enabled=false
if (!IsEnabled) {
writer.AddAttribute(HtmlTextWriterAttribute.Disabled, "disabled");
}
// We don't do autopostback if the radio button has been selected.
// This is to make it consistent that it only posts back if its
// state has been changed. Also, it avoids the problem of missing
// validation since the data changed event would not be fired if the
// selected radio button was posting back.
if (AutoPostBack && !Checked && Page != null) {
PostBackOptions options = new PostBackOptions(this, String.Empty);
// ASURT 98368
// Need to merge the autopostback script with the user script
if (CausesValidation) {
options.PerformValidation = true;
options.ValidationGroup = ValidationGroup;
}
if (Page.Form != null) {
options.AutoPostBack = true;
}
onClick = Util.MergeScript(onClick, Page.ClientScript.GetPostBackEventReference(options));
writer.AddAttribute(HtmlTextWriterAttribute.Onclick, onClick);
if (EnableLegacyRendering) {
writer.AddAttribute("language", "javascript", false);
}
}
else {
if (onClick != null) {
writer.AddAttribute(HtmlTextWriterAttribute.Onclick, onClick);
}
}
string s = AccessKey;
if (s.Length > 0)
writer.AddAttribute(HtmlTextWriterAttribute.Accesskey, s);
int i = TabIndex;
if (i != 0) {
writer.AddAttribute(HtmlTextWriterAttribute.Tabindex, i.ToString(NumberFormatInfo.InvariantInfo));
}
if (_inputAttributes != null && _inputAttributes.Count != 0) {
_inputAttributes.AddAttributes(writer);
}
writer.RenderBeginTag(HtmlTextWriterTag.Input);
writer.RenderEndTag();
}
}
}
// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
//------------------------------------------------------------------------------
//
// Copyright (c) Microsoft Corporation. All rights reserved.
//
//-----------------------------------------------------------------------------
namespace System.Web.UI.WebControls {
using System;
using System.Web;
using System.Web.UI;
using System.Collections;
using System.Collections.Specialized;
using System.ComponentModel;
using System.Globalization;
using System.Security.Permissions;
///
/// Constructs a radio button and defines its
/// properties.
///
[
Designer("System.Web.UI.Design.WebControls.CheckBoxDesigner, " + AssemblyRef.SystemDesign),
SupportsEventValidation,
]
[AspNetHostingPermission(SecurityAction.LinkDemand, Level=AspNetHostingPermissionLevel.Minimal)]
[AspNetHostingPermission(SecurityAction.InheritanceDemand, Level=AspNetHostingPermissionLevel.Minimal)]
public class RadioButton : CheckBox, IPostBackDataHandler {
#if SHIPPINGADAPTERS
internal static readonly string AltSelectedText = "(o)";
internal static readonly string AltUnselectedText = "(_)";
#endif
private string _uniqueGroupName = null;
///
/// Initializes a new instance of the
///
public RadioButton() {
}
///
/// Gets or
/// sets the name of the group that the radio button belongs to.
///
[
DefaultValue(""),
WebCategory("Behavior"),
WebSysDescription(SR.RadioButton_GroupName),
Themeable(false),
]
public virtual string GroupName {
get {
string s = (string)ViewState["GroupName"];
return((s == null) ? String.Empty : s);
}
set {
ViewState["GroupName"] = value;
}
}
// Fully qualified GroupName for rendering purposes, to take care of conflicts
// between different naming containers
internal string UniqueGroupName {
get {
if (_uniqueGroupName == null) {
// For radio buttons, we must make the groupname unique, but can't just use the
// UniqueID because all buttons in a group must have the same name. So
// we replace the last part of the UniqueID with the group Name.
string name = GroupName;
string uid = UniqueID;
if (uid != null) {
int lastColon = uid.LastIndexOf(IdSeparator);
if (lastColon >= 0) {
if (name.Length > 0) {
name = uid.Substring(0, lastColon+1) + name;
}
else if (NamingContainer is RadioButtonList) {
// If GroupName is not set we simply use the naming
// container as the group name
name = uid.Substring(0, lastColon);
}
}
if (name.Length == 0) {
name = uid;
}
}
_uniqueGroupName = name;
}
return _uniqueGroupName;
}
}
///
///
internal string ValueAttribute {
get {
string valueAttr = Attributes["value"];
if (valueAttr == null) {
// VSWhidbey 146829. Always EnsureID so the valueAttribute will not change by
// call to ClientID which happens during Render.
EnsureID();
if (ID != null)
valueAttr = ID;
else
valueAttr = UniqueID;
}
return valueAttr;
}
}
///
/// Method of IPostBackDataHandler interface to process posted data.
/// RadioButton determines the posted radio group state.
///
bool IPostBackDataHandler.LoadPostData(String postDataKey, NameValueCollection postCollection) {
return LoadPostData(postDataKey, postCollection);
}
///
/// Method of IPostBackDataHandler interface to process posted data.
/// RadioButton determines the posted radio group state.
///
protected override bool LoadPostData(String postDataKey, NameValueCollection postCollection) {
string post = postCollection[UniqueGroupName];
bool valueChanged = false;
if ((post != null) && post.Equals(ValueAttribute)) {
ValidateEvent(UniqueGroupName, post);
if (Checked == false) {
Checked = true;
// only fire change event for RadioButton that is being checked
valueChanged = true;
}
}
else {
if (Checked == true) {
Checked = false;
}
}
return valueChanged;
}
///
/// Raises when posted data for a control has changed.
///
void IPostBackDataHandler.RaisePostDataChangedEvent() {
RaisePostDataChangedEvent();
}
///
/// Raises when posted data for a control has changed.
///
protected override void RaisePostDataChangedEvent() {
if (AutoPostBack && !Page.IsPostBackEventControlRegistered) {
// VSWhidbey 204824
Page.AutoPostBackControl = this;
if (CausesValidation) {
Page.Validate(ValidationGroup);
}
}
OnCheckedChanged(EventArgs.Empty);
}
///
/// This method is invoked just prior to rendering.
/// Register client script for handling postback if onChangeHandler is set.
///
protected internal override void OnPreRender(EventArgs e) {
// must call CheckBox PreRender
base.OnPreRender(e);
if (Page != null && !Checked && Enabled) {
Page.RegisterRequiresPostBack(this);
}
}
internal override void RenderInputTag(HtmlTextWriter writer, string clientID, string onClick) {
writer.AddAttribute(HtmlTextWriterAttribute.Id, clientID);
writer.AddAttribute(HtmlTextWriterAttribute.Type, "radio");
writer.AddAttribute(HtmlTextWriterAttribute.Name, UniqueGroupName);
writer.AddAttribute(HtmlTextWriterAttribute.Value, ValueAttribute);
if (Page != null) {
Page.ClientScript.RegisterForEventValidation(UniqueGroupName, ValueAttribute);
}
if (Checked)
writer.AddAttribute(HtmlTextWriterAttribute.Checked, "checked");
// ASURT 119141: Render disabled attribute on the INPUT tag (instead of the SPAN) so the checkbox actually gets disabled when Enabled=false
if (!IsEnabled) {
writer.AddAttribute(HtmlTextWriterAttribute.Disabled, "disabled");
}
// We don't do autopostback if the radio button has been selected.
// This is to make it consistent that it only posts back if its
// state has been changed. Also, it avoids the problem of missing
// validation since the data changed event would not be fired if the
// selected radio button was posting back.
if (AutoPostBack && !Checked && Page != null) {
PostBackOptions options = new PostBackOptions(this, String.Empty);
// ASURT 98368
// Need to merge the autopostback script with the user script
if (CausesValidation) {
options.PerformValidation = true;
options.ValidationGroup = ValidationGroup;
}
if (Page.Form != null) {
options.AutoPostBack = true;
}
onClick = Util.MergeScript(onClick, Page.ClientScript.GetPostBackEventReference(options));
writer.AddAttribute(HtmlTextWriterAttribute.Onclick, onClick);
if (EnableLegacyRendering) {
writer.AddAttribute("language", "javascript", false);
}
}
else {
if (onClick != null) {
writer.AddAttribute(HtmlTextWriterAttribute.Onclick, onClick);
}
}
string s = AccessKey;
if (s.Length > 0)
writer.AddAttribute(HtmlTextWriterAttribute.Accesskey, s);
int i = TabIndex;
if (i != 0) {
writer.AddAttribute(HtmlTextWriterAttribute.Tabindex, i.ToString(NumberFormatInfo.InvariantInfo));
}
if (_inputAttributes != null && _inputAttributes.Count != 0) {
_inputAttributes.AddAttributes(writer);
}
writer.RenderBeginTag(HtmlTextWriterTag.Input);
writer.RenderEndTag();
}
}
}
// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
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