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//------------------------------------------------------------------------------
// <copyright file="HtmlInputGenericControl.cs" company="Microsoft">
// Copyright (c) Microsoft Corporation. All rights reserved.
// </copyright>
//------------------------------------------------------------------------------
namespace System.Web.UI.HtmlControls {
using System;
using System.Collections.Specialized;
using System.ComponentModel;
using System.Diagnostics.CodeAnalysis;
using System.Web;
using System.Web.UI;
/// <devdoc>
/// <para>
/// The <see langword='HtmlInputGenericControl'/>
/// class defines the methods, properties, and events for the a generic input
/// control. This class allows programmatic access to the HTML5 <input>
/// elements on the server.
/// </para>
/// </devdoc>
[
DefaultEvent("ServerChange"),
ValidationProperty("Value"),
]
public class HtmlInputGenericControl : HtmlInputControl, IPostBackDataHandler {
private static readonly object EventServerChange = new object();
/// <summary>
/// Creates an intrinsic Html INPUT type=text control.
/// </summary>
public HtmlInputGenericControl() : base("text") {
}
/// <summary>
/// Creates an intrinsic Html INPUT control based on its type.
/// </summary>
/// <param name="type">The type of the control</param>
public HtmlInputGenericControl(string type)
: base(type) {
}
[
WebCategory("Action"),
WebSysDescription(SR.HtmlInputText_ServerChange)
]
public event EventHandler ServerChange {
add {
Events.AddHandler(EventServerChange, value);
}
remove {
Events.RemoveHandler(EventServerChange, value);
}
}
/// <summary>
/// Method used to raise the OnServerChange event.
/// </summary>
/// <param name="e">Event</param>
protected virtual void OnServerChange(EventArgs e) {
EventHandler handler = (EventHandler)Events[EventServerChange];
if (handler != null) {
handler(this, e);
}
}
protected internal override void OnPreRender(EventArgs e) {
base.OnPreRender(e);
if (!Disabled && Page != null) {
Page.RegisterEnabledControl(this);
}
}
bool IPostBackDataHandler.LoadPostData(string postDataKey, NameValueCollection postCollection) {
return LoadPostData(postDataKey, postCollection);
}
protected virtual bool LoadPostData(string postDataKey, NameValueCollection postCollection) {
string current = Value;
string inputString = postCollection.GetValues(postDataKey)[0];
if (!current.Equals(inputString)) {
ValidateEvent(postDataKey);
Value = inputString;
return true;
}
return false;
}
void IPostBackDataHandler.RaisePostDataChangedEvent() {
RaisePostDataChangedEvent();
}
[SuppressMessage("Microsoft.Design", "CA1030:UseEventsWhereAppropriate", Justification = @"Events are being used correctly for RaisePostBackEvent and RaisePostDataChangedEvent.")]
protected virtual void RaisePostDataChangedEvent() {
OnServerChange(EventArgs.Empty);
}
}
}
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