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