Code:
/ 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / fx / src / xsp / System / Web / UI / LiteralControl.cs / 1305376 / LiteralControl.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //----------------------------------------------------------------------------- /* * Control that holds a literal string * * Copyright (c) 1999 Microsoft Corporation */ namespace System.Web.UI { using System; using System.ComponentModel; using System.ComponentModel.Design; using System.IO; ////// [ ToolboxItem(false) ] public class LiteralControl : Control, ITextControl { internal string _text; ///Defines the properties and methods of the LiteralControl class. A /// literal control is usually rendered as HTML text on a page. ////// LiteralControls behave as text holders, i.e., the parent of a LiteralControl may decide /// to extract its text, and remove the control from its Control collection (typically for /// performance reasons). /// Therefore a control derived from LiteralControl must do any preprocessing of its Text /// when it hands it out, that it would otherwise have done in its Render implementation. /// ////// public LiteralControl() { PreventAutoID(); SetEnableViewStateInternal(false); } ///Creates a control that holds a literal string. ////// public LiteralControl(string text) : this() { _text = (text != null) ? text : String.Empty; } ///Initializes a new instance of the LiteralControl class with /// the specified text. ////// public virtual string Text { get { return _text; } set { _text = (value != null) ? value : String.Empty; } } protected override ControlCollection CreateControlCollection() { return new EmptyControlCollection(this); } ///Gets or sets the text content of the literal control. ////// [System.Runtime.TargetedPatchingOptOut("Performance critical to inline across NGen image boundaries")] protected internal override void Render(HtmlTextWriter output) { output.Write(_text); } internal override void InitRecursive(Control namingContainer) { ResolveAdapter(); if (AdapterInternal != null) { AdapterInternal.OnInit(EventArgs.Empty); } else { OnInit(EventArgs.Empty); } } internal override void LoadRecursive() { if (AdapterInternal != null) { AdapterInternal.OnLoad(EventArgs.Empty); } else { OnLoad(EventArgs.Empty); } } internal override void PreRenderRecursiveInternal() { if (AdapterInternal != null) { AdapterInternal.OnPreRender(EventArgs.Empty); } else { OnPreRender(EventArgs.Empty); } } internal override void UnloadRecursive(bool dispose) { if (AdapterInternal != null) { AdapterInternal.OnUnload(EventArgs.Empty); } else { OnUnload(EventArgs.Empty); } // if (dispose) Dispose(); } } /* * Class used to access literal strings stored in a resource (perf optimization). * This class is only public because it needs to be used by the generated classes. * Users should not use directly. */ internal sealed class ResourceBasedLiteralControl : LiteralControl { private TemplateControl _tplControl; private int _offset; // Offset of the start of this string in the resource private int _size; // Size of this string in bytes private bool _fAsciiOnly; // Does the string contain only 7-bit ascii characters internal ResourceBasedLiteralControl(TemplateControl tplControl, int offset, int size, bool fAsciiOnly) { // Make sure we don't access invalid data if (offset < 0 || offset+size > tplControl.MaxResourceOffset) throw new ArgumentException(); _tplControl = tplControl; _offset = offset; _size = size; _fAsciiOnly = fAsciiOnly; PreventAutoID(); EnableViewState = false; } public override string Text { get { // If it's just a normal string, call the base if (_size == 0) return base.Text; return StringResourceManager.ResourceToString( _tplControl.StringResourcePointer, _offset, _size); } set { // From now on, this will behave like a normal LiteralControl _size = 0; base.Text = value; } } protected internal override void Render(HtmlTextWriter output) { // If it's just a normal string, call the base if (_size == 0) { base.Render(output); return; } output.WriteUTF8ResourceString(_tplControl.StringResourcePointer, _offset, _size, _fAsciiOnly); } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007.Saves any state that was modified after mark. ///
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