Imported Upstream version 4.6.0.125

Former-commit-id: a2155e9bd80020e49e72e86c44da02a8ac0e57a4

mcs/class/referencesource/System.Web/UI/HtmlControls/HtmlInputText.cs

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+//------------------------------------------------------------------------------
+// <copyright file="HtmlInputText.cs" company="Microsoft">
+//     Copyright (c) Microsoft Corporation.  All rights reserved.
+// </copyright>
+//------------------------------------------------------------------------------
+
+/*
+ * HtmlInputText.cs
+ *
+ * Copyright (c) 2000 Microsoft Corporation
+ */
+
+namespace System.Web.UI.HtmlControls {
+    using System.ComponentModel;
+    using System;
+    using System.Collections;
+    using System.Collections.Specialized;
+    using System.Globalization;
+    using System.Web;
+    using System.Web.UI;
+    using System.Security.Permissions;
+
+
+/// <devdoc>
+///    <para>
+///       The <see langword='HtmlInputText'/>
+///       class defines the methods, properties, and events for the HtmlInputText server
+///       control. This class allows programmatic access to the HTML &lt;input type=
+///       text&gt;
+///       and &lt;input type=
+///       password&gt; elements on the server.
+///    </para>
+/// </devdoc>
+    [
+    DefaultEvent("ServerChange"),
+    SupportsEventValidation,
+    ValidationProperty("Value"),
+    ]
+    public class HtmlInputText : HtmlInputControl, IPostBackDataHandler {
+
+        private static readonly object EventServerChange = new object();
+
+        /*
+         * Creates an intrinsic Html INPUT type=text control.
+         */
+
+        public HtmlInputText() : base("text") {
+        }
+
+        /*
+         * Creates an intrinsic Html INPUT type=text control.
+         */
+
+        /// <devdoc>
+        /// </devdoc>
+        public HtmlInputText(string type) : base(type) {
+        }
+
+        /*
+         * The property for the maximum characters allowed.
+         */
+
+        /// <devdoc>
+        ///    <para>
+        ///       Gets or sets the maximum number of characters that
+        ///       can be typed into the text box.
+        ///    </para>
+        /// </devdoc>
+        [
+        WebCategory("Behavior"),
+        DefaultValue(""),
+        DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)
+        ]
+        public int MaxLength {
+            get {
+                string s = (string)ViewState["maxlength"];
+                return((s != null) ? Int32.Parse(s, CultureInfo.InvariantCulture) : -1);
+            }
+
+            set {
+                Attributes["maxlength"] = MapIntegerAttributeToString(value);
+            }
+        }
+
+        // 
+
+        /*
+         * The property for the width of the TextBox in characters.
+         */
+
+        /// <devdoc>
+        ///    <para>
+        ///       Gets or sets the width of a text box, in characters.
+        ///    </para>
+        /// </devdoc>
+        [
+        WebCategory("Appearance"),
+        DefaultValue(-1),
+        DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)
+        ]
+        public int Size {
+            get {
+                string s = Attributes["size"];
+                return((s != null) ? Int32.Parse(s, CultureInfo.InvariantCulture) : -1);
+            }
+            set {
+                Attributes["size"] = MapIntegerAttributeToString(value);
+            }
+        }
+
+        /*
+         * Value property.
+         */
+
+        /// <devdoc>
+        ///    <para>
+        ///       Gets or sets the
+        ///       contents of a text box.
+        ///    </para>
+        /// </devdoc>
+        public override string Value {
+            get {
+                string s = Attributes["value"];
+                return((s != null) ? s : String.Empty);
+            }
+            set {
+                Attributes["value"] = MapStringAttributeToString(value);
+            }
+        }
+
+
+        [
+        WebCategory("Action"),
+        WebSysDescription(SR.HtmlInputText_ServerChange)
+        ]
+        public event EventHandler ServerChange {
+            add {
+                Events.AddHandler(EventServerChange, value);
+            }
+            remove {
+                Events.RemoveHandler(EventServerChange, value);
+            }
+        }
+
+        /*
+         * Method used to raise the OnServerChange event.
+         */
+
+        /// <devdoc>
+        /// </devdoc>
+        protected virtual void OnServerChange(EventArgs e) {
+            EventHandler handler = (EventHandler)Events[EventServerChange];
+            if (handler != null) handler(this, e);
+        }
+
+        /*
+         *
+         */
+
+        /// <internalonly/>
+        /// <devdoc>
+        /// </devdoc>
+        protected internal override void OnPreRender(EventArgs e) {
+            base.OnPreRender(e);
+
+            bool disabled = Disabled;
+            if (!disabled && Page != null) {
+                Page.RegisterEnabledControl(this);
+            }
+
+            // if no change handler, no need to save posted property unless we are disabled;
+            // VSWhidbey 419040: We should never save password value in ViewState
+            if ((!disabled && Events[EventServerChange] == null) ||
+                Type.Equals("password", StringComparison.OrdinalIgnoreCase)) {
+                ViewState.SetItemDirty("value", false);
+            }
+        }
+
+        protected override void RenderAttributes(HtmlTextWriter writer) {
+            base.RenderAttributes(writer);
+
+            if (Page != null) {
+                Page.ClientScript.RegisterForEventValidation(RenderedNameAttribute);
+            }
+        }
+
+        /*
+         * Method of IPostBackDataHandler interface to process posted data.
+         * InputText process a newly posted value.
+         */
+
+        /// <internalonly/>
+        /// <devdoc>
+        /// </devdoc>
+        bool IPostBackDataHandler.LoadPostData(string postDataKey, NameValueCollection postCollection) {
+            return LoadPostData(postDataKey, postCollection);
+        }
+
+
+        /// <internalonly/>
+        /// <devdoc>
+        /// </devdoc>
+        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;
+        }
+
+        /*
+         * Method of IPostBackDataHandler interface which is invoked whenever posted data
+         * for a control has changed.  InputText fires an OnServerChange event.
+         */
+
+        /// <internalonly/>
+        /// <devdoc>
+        /// </devdoc>
+        void IPostBackDataHandler.RaisePostDataChangedEvent() {
+            RaisePostDataChangedEvent();
+        }
+
+
+        /// <internalonly/>
+        /// <devdoc>
+        /// </devdoc>
+        protected virtual void RaisePostDataChangedEvent() {
+            OnServerChange(EventArgs.Empty);
+        }
+    }
+}