XhtmlBasicTextBoxAdapter.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 / XhtmlAdapters / XhtmlBasicTextBoxAdapter.cs / 1305376 / XhtmlBasicTextBoxAdapter.cs
                        

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

using System; 
using System.Security.Permissions; 
using System.Web.UI;
using System.Web.Mobile; 
using System.Web.UI.MobileControls;
using System.Web.UI.MobileControls.Adapters;
using System.Globalization;
 
#if COMPILING_FOR_SHIPPED_SOURCE
namespace System.Web.UI.MobileControls.ShippedAdapterSource.XhtmlAdapters 
#else 
namespace System.Web.UI.MobileControls.Adapters.XhtmlAdapters
#endif 
{

    /// 
    [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 XhtmlTextBoxAdapter : XhtmlControlAdapter { 

        ///  
        public new TextBox Control {
            get {
                return base.Control as TextBox;
            } 
        }
 
        // Used for optimization in RenderAsHiddenField. 
        private String _staticValue;
        ///  
        public override void OnInit(EventArgs e) {
            _staticValue = Control.Text;
            base.OnInit(e);
        } 

        ///  
        public override void Render(XhtmlMobileTextWriter writer) { 
            ConditionalClearPendingBreak(writer);
            ConditionalEnterStyle(writer, Style); 
            ConditionalRenderOpeningSpanElement(writer);

            if ((String) Device[XhtmlConstants.RequiresOnEnterForward] == "true") {
                writer.AddOnEnterForwardSetVar(Control.UniqueID, Control.Text); 
            }
 
            writer.WriteBeginTag("input"); 

            writer.WriteAttribute("name", Control.UniqueID); 

            ConditionalRenderCustomAttribute(writer, XhtmlConstants.AccessKeyCustomAttribute);
            String controlText = Control.Text;
            if (controlText != null && controlText.Length > 0 && !Control.Password) { 
                writer.Write(" value=\"");
                writer.WriteEncodedText(controlText); 
                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)); 
            } 

            String requiresType = Device["requiresInputTypeAttribute"]; 
            if (Control.Password) {
                writer.WriteAttribute("type", "password");
            }
            // InvariantCulture not needed, but included for best practices. 
            else if (requiresType != null && String.Equals(requiresType, "true", StringComparison.OrdinalIgnoreCase)) {
                writer.WriteAttribute("type", "text"); 
            } 

 
            writer.Write("/>");
            // ConditionalSetPendingBreak should always be called *before* ConditionalExitStyle.
            // ConditionalExitStyle may render a block element and clear the pending break.
            ConditionalSetPendingBreakAfterInline(writer); 
            ConditionalRenderClosingSpanElement(writer);
            ConditionalExitStyle(writer, Style); 
        } 

        ///  
        protected override void RenderAsHiddenInputField(XhtmlMobileTextWriter 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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