ScriptControl.cs source code in C# .NET

Source code for the .NET framework in C#

                        
Code:

                         / DotNET / DotNET / 8.0 / untmp / Orcas / RTM / ndp / fx / src / xsp / System / Web / Extensions / ui / ScriptControl.cs / 1 / ScriptControl.cs
                        

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

namespace System.Web.UI { 
    using System; 
    using System.Collections.Generic;
    using System.ComponentModel; 
    using System.Diagnostics.CodeAnalysis;
    using System.Globalization;
    using System.Security.Permissions;
    using System.Web; 
    using System.Web.Resources;
    using System.Web.UI; 
    using System.Web.UI.WebControls; 
    using System.Web.Util;
 
    [
    AspNetHostingPermission(SecurityAction.LinkDemand, Level = AspNetHostingPermissionLevel.Minimal),
    AspNetHostingPermission(SecurityAction.InheritanceDemand, Level = AspNetHostingPermissionLevel.Minimal),
    ] 
    public abstract class ScriptControl : WebControl, IScriptControl {
        private IScriptManagerInternal _scriptManager; 
        private new IPage _page; 

        protected ScriptControl() { 
        }

        internal ScriptControl(IScriptManagerInternal scriptManager, IPage page) {
            _scriptManager = scriptManager; 
            _page = page;
        } 
 
        private IPage IPage {
            get { 
                if (_page != null) {
                    return _page;
                }
                else { 
                    Page page = Page;
                    if (page == null) { 
                        throw new InvalidOperationException(AtlasWeb.Common_PageCannotBeNull); 
                    }
                    return new PageWrapper(page); 
                }
            }
        }
 
        private IScriptManagerInternal ScriptManager {
            get { 
                if (_scriptManager == null) { 
                    Page page = Page;
                    if (page == null) { 
                        throw new InvalidOperationException(AtlasWeb.Common_PageCannotBeNull);
                    }
                    _scriptManager = System.Web.UI.ScriptManager.GetCurrent(page);
                    if (_scriptManager == null) { 
                        throw new InvalidOperationException(String.Format(CultureInfo.InvariantCulture,
                            AtlasWeb.Common_ScriptManagerRequired, ID)); 
                    } 
                }
                return _scriptManager; 
            }
        }

        [SuppressMessage("Microsoft.Security", "CA2109:ReviewVisibleEventHandlers")] 
        protected internal override void OnPreRender(EventArgs e) {
            base.OnPreRender(e); 
            ScriptManager.RegisterScriptControl(this); 
        }
 
        protected internal override void Render(HtmlTextWriter writer) {
            base.Render(writer);

            // DevDiv 97460: ScriptDescriptors only render if in server form, verify to avoid silently failing. 
            IPage.VerifyRenderingInServerForm(this);
 
            // ScriptManager cannot be found in DesignMode, so do not attempt to register scripts. 
            if (!DesignMode) {
                ScriptManager.RegisterScriptDescriptors(this); 
            }
        }

        [SuppressMessage("Microsoft.Design", "CA1024:UsePropertiesWhereAppropriate", 
            Justification = "Implementation will likely return a new collection, which is too slow for a property")]
        protected abstract IEnumerable GetScriptDescriptors(); 
 
        [SuppressMessage("Microsoft.Design", "CA1024:UsePropertiesWhereAppropriate",
            Justification = "Implementation will likely return a new collection, which is too slow for a property")] 
        protected abstract IEnumerable GetScriptReferences();

        #region IScriptControl Members
        IEnumerable IScriptControl.GetScriptDescriptors() { 
            return GetScriptDescriptors();
        } 
 
        IEnumerable IScriptControl.GetScriptReferences() {
            return GetScriptReferences(); 
        }
        #endregion
    }
} 

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
// Copyright (c) Microsoft Corporation. All rights reserved.

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