Code:
/ 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / fx / src / MIT / System / Web / UI / MobileControls / Adapters / ChtmlFormAdapter.cs / 1305376 / ChtmlFormAdapter.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //----------------------------------------------------------------------------- using System.Globalization; using System.Security.Permissions; #if COMPILING_FOR_SHIPPED_SOURCE namespace System.Web.UI.MobileControls.ShippedAdapterSource #else namespace System.Web.UI.MobileControls.Adapters #endif { /* * ChtmlFormAdapter 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 ChtmlFormAdapter : HtmlFormAdapter { private static readonly String _contentTypeMetaTag = "\r\n"; /// protected override bool ShouldRenderFormTag() { if (!Device.RequiresOutputOptimization || Control.PageCount > 1) { return true; } return IsFormTagNeeded(Control); } // Recursive method to check if there is any descendant control // requires the form tag. For unknown cases, the method returns true // in case the unknown rendering requires the form tag. private bool IsFormTagNeeded(Control control) { // Check itself first if (!control.Visible) { return false; } MobileControl mobileControl = control as MobileControl; if (mobileControl != null) { // Since we don't have control over what content is included // in the template, to be safe we just generate the form tag. if (mobileControl.IsTemplated) { return true; } HtmlControlAdapter adapter = mobileControl.Adapter as HtmlControlAdapter; if (adapter != null && adapter.RequiresFormTag) { return true; } } else if (!(control is UserControl) && !(control is LiteralControl)) { // UserControl simply acts as a container, so the checking // should be delegated to its children below. // LiteralControl is a plain text control. Also, it is // generated for the spaces in between mobile control tags so // we don't want to consider it as a form required control. // For other cases, we should generate form tag as we don't // know the content that will be generated. return true; } // No problem with the current control so far, now recursively // check its children. if (control.HasControls()) { foreach (Control child in control.Controls) { if (IsFormTagNeeded(child)) { // This is to get out of recursive loop without // further checking on other controls. return true; } } } return false; } /// protected override bool RenderExtraHeadElements(HtmlMobileTextWriter writer) { bool result = false; String metaTagName = Device.RequiredMetaTagNameValue; if (metaTagName != null) { if (writer != null) { writer.Write("\r\n"); } result = true; } String charset = Page.Response.Charset; if (Device.RequiresContentTypeMetaTag && charset != null && charset.Length > 0) { if (writer != null) { writer.Write(String.Format(CultureInfo.InvariantCulture, _contentTypeMetaTag, Device.PreferredRenderingMime, charset)); } result = true; } return result; } /// protected internal override void RenderPagerTag( HtmlMobileTextWriter writer, int pageToNavigate, String text) { writer.EnterLayout(Style); writer.EnterFormat(Style); writer.WriteBeginTag("input"); // Specially encode the page number with the control id. // The corresponding code that handles postback should know how // to extract the page number correctly. writer.Write(" name=\""); writer.Write(Control.UniqueID); writer.Write(Constants.PagePrefix); writer.Write(pageToNavigate.ToString(CultureInfo.InvariantCulture)); writer.Write("\""); writer.WriteAttribute("type", "submit"); writer.WriteAttribute("value", text, true); writer.Write("/>"); writer.ExitFormat(Style); writer.ExitLayout(Style); } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007.
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