HtmlTextBoxAdapter.cs source code in C# .NET

Source code for the .NET framework in C#

                        
Code:

                         / 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / fx / src / MIT / System / Web / UI / MobileControls / Adapters / HtmlTextBoxAdapter.cs / 1305376 / HtmlTextBoxAdapter.cs
                        

                        
                            //------------------------------------------------------------------------------ 
// 
//     Copyright (c) Microsoft Corporation.  All rights reserved.
// 
//----------------------------------------------------------------------------- 

using System.Security.Permissions; 
using System.Globalization; 

#if COMPILING_FOR_SHIPPED_SOURCE 
namespace System.Web.UI.MobileControls.ShippedAdapterSource
#else
namespace System.Web.UI.MobileControls.Adapters
#endif 

{ 
    /* 
     * HtmlTextBoxAdapter class.
     * 
     * Copyright (c) 2000 Microsoft Corporation
     */
    /// 
    [AspNetHostingPermission(SecurityAction.LinkDemand, Level=AspNetHostingPermissionLevel.Minimal)] 
    [AspNetHostingPermission(SecurityAction.InheritanceDemand, Level=AspNetHostingPermissionLevel.Minimal)]
    [Obsolete("The System.Web.Mobile.dll assembly has been deprecated and should no longer be used. For information about how to develop ASP.NET mobile applications, see http://go.microsoft.com/fwlink/?LinkId=157231.")] 
    public class HtmlTextBoxAdapter : HtmlControlAdapter 
    {
        private String _staticValue; 

        /// 
        protected new TextBox Control
        { 
            get
            { 
                return (TextBox)base.Control; 
            }
        } 

        /// 
        public override void OnInit(EventArgs e)
        { 
            _staticValue = Control.Text;
            base.OnInit(e); 
        } 

        ///  
        public override void Render(HtmlMobileTextWriter writer)
        {
            writer.EnterLayout(Style);
 
            writer.WriteBeginTag("input");
 
            writer.WriteAttribute("name", GetRenderName()); 

            if ((Control.Text == null || Control.Text.Length > 0) && !Control.Password) 
            {
                writer.Write(" value=\"");
                writer.WriteText(Control.Text, true);
                writer.Write("\""); 
            }
            if (Control.Size > 0) 
            { 
                writer.WriteAttribute("size", Control.Size.ToString(CultureInfo.InvariantCulture));
            } 
            if (Control.MaxLength > 0)
            {
                writer.WriteAttribute("maxlength", Control.MaxLength.ToString(CultureInfo.InvariantCulture));
            } 
            if (Control.Password)
            { 
                writer.WriteAttribute("type", "password"); 
            }
            AddAttributes(writer); 
            writer.Write("/>");

            writer.ExitLayout(Style, Control.BreakAfter);
            writer.InputWritten = true; 
        }
 
        internal virtual String GetRenderName() 
        {
            String renderName; 
            if(Device.RequiresAttributeColonSubstitution)
            {
                renderName = Control.UniqueID.Replace(':', ',');
            } 
            else
            { 
                renderName = Control.UniqueID; 
            }
 
            return renderName;
        }

        ///  
        protected override void RenderAsHiddenInputField(HtmlMobileTextWriter writer)
        { 
            // Optimization - if viewstate is enabled for this control, and the 
            // postback returns to this page, we just let it do the trick.
 
            if (Control.Form.Action.Length > 0 || (!IsViewStateEnabled() && Control.Text != _staticValue))
            {
                writer.WriteHiddenField(Control.UniqueID, Control.Text);
            } 
        }
 
        private bool IsViewStateEnabled() 
        {
            Control ctl = Control; 
            while (ctl != null)
            {
                if (!ctl.EnableViewState)
                { 
                    return false;
                } 
                ctl = ctl.Parent; 
            }
            return true; 
        }
    }
}

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.

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