UpdateProgress.cs source code in C# .NET

                        Code:
                         / 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / fx / src / xsp / System / Extensions / UI / UpdateProgress.cs / 1305376 / UpdateProgress.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.Drawing;
    using System.Globalization;
    using System.Text; 
    using System.Web;
    using System.Web.UI; 
    using System.Web.Script; 
    using System.Web.Resources;
    using System.Web.Util; 

    [
    DefaultProperty("AssociatedUpdatePanelID"),
    Designer("System.Web.UI.Design.UpdateProgressDesigner, " + AssemblyRef.SystemWebExtensionsDesign), 
    ParseChildren(true),
    PersistChildren(false), 
    ToolboxBitmap(typeof(EmbeddedResourceFinder), "System.Web.Resources.UpdateProgress.bmp") 
    ]
    public class UpdateProgress : Control, IAttributeAccessor, IScriptControl { 

        private AttributeCollection _attributes;
        private ITemplate _progressTemplate;
        private Control _progressTemplateContainer; 
        private int _displayAfter = 500;
        private bool _dynamicLayout = true; 
        private string _associatedUpdatePanelID; 

        [ 
        Category("Behavior"),
        DefaultValue(""),
        IDReferenceProperty(typeof(UpdatePanel)),
        ResourceDescription("UpdateProgress_AssociatedUpdatePanelID"), 
        SuppressMessage("Microsoft.Naming", "CA1709:IdentifiersShouldBeCasedCorrectly", MessageId = "ID"),
        TypeConverter("System.Web.UI.Design.UpdateProgressAssociatedUpdatePanelIDConverter") 
        ] 
        public string AssociatedUpdatePanelID {
            get { 
                if (_associatedUpdatePanelID == null) {
                    return String.Empty;
                }
                return _associatedUpdatePanelID; 
            }
            set { 
                _associatedUpdatePanelID = value; 
            }
        } 

        [
        Browsable(false),
        DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden), 
        WebSysDescription(SR.WebControl_Attributes)
        ] 
        public AttributeCollection Attributes { 
            get {
                if (_attributes == null) { 
                    StateBag bag = new StateBag(true /* ignoreCase */);
                    _attributes = new AttributeCollection(bag);
                }
                return _attributes; 
            }
        } 
 
        public override ControlCollection Controls {
            get { 
                EnsureChildControls();
                return base.Controls;
            }
        } 

        [ 
        DefaultValue(500), 
        ResourceDescription("UpdateProgress_DisplayAfter"),
        Category("Behavior") 
        ]
        public int DisplayAfter {
            get {
                return _displayAfter; 
            }
            set { 
                if (value < 0) { 
                    throw new ArgumentOutOfRangeException(AtlasWeb.UpdateProgress_DisplayAfterInvalid);
                } 
                _displayAfter = value;
            }
        }
 
        [
        Browsable(false), 
        PersistenceMode(PersistenceMode.InnerProperty), 
        ResourceDescription("UpdateProgress_ProgressTemplate"),
        ] 
        public ITemplate ProgressTemplate {
            get {
                return _progressTemplate;
            } 
            set {
                _progressTemplate = value; 
            } 
        }
 
        [
        DefaultValue(true),
        ResourceDescription("UpdateProgress_DynamicLayout"),
        Category("Behavior") 
        ]
        public bool DynamicLayout { 
            get { 
                return _dynamicLayout;
            } 
            set {
                _dynamicLayout = value;
            }
        } 

        private ScriptManager ScriptManager { 
            get { 
                ScriptManager scriptManager = ScriptManager.GetCurrent(Page);
                if (scriptManager == null) { 
                    throw new InvalidOperationException(String.Format(CultureInfo.InvariantCulture, AtlasWeb.Common_ScriptManagerRequired, ID));
                }
                return scriptManager;
            } 
        }
 
        protected internal override void CreateChildControls() { 
            // Set up the progress template
            if (_progressTemplate != null) { 
                _progressTemplateContainer = new Control();
                _progressTemplate.InstantiateIn(_progressTemplateContainer);
                Controls.Add(_progressTemplateContainer);
            } 
        }
 
        public override void DataBind() { 
            EnsureChildControls();
            base.DataBind(); 
        }

        [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) {
            EnsureChildControls();

            writer.AddAttribute(HtmlTextWriterAttribute.Id, ClientID); 
            if (_dynamicLayout) {
                writer.AddStyleAttribute(HtmlTextWriterStyle.Display, "none"); 
            } 
            else {
                writer.AddStyleAttribute(HtmlTextWriterStyle.Visibility, "hidden"); 
                writer.AddStyleAttribute(HtmlTextWriterStyle.Display, "block");
            }
            if (_attributes != null) {
                _attributes.AddAttributes(writer); 
            }
 
            writer.RenderBeginTag(HtmlTextWriterTag.Div); 
            base.Render(writer);
            writer.RenderEndTag(); // div 

            if (!DesignMode) {
                ScriptManager.RegisterScriptDescriptors(this);
            } 
        }
 
        [SuppressMessage("Microsoft.Design", "CA1024:UsePropertiesWhereAppropriate", 
            Justification = "Matches IScriptControl interface.")]
        protected virtual IEnumerable GetScriptReferences() { 
            yield break;
        }

        [SuppressMessage("Microsoft.Design", "CA1024:UsePropertiesWhereAppropriate", 
            Justification = "Matches IScriptControl interface.")]
        protected virtual IEnumerable GetScriptDescriptors() { 
            // Don't render any scripts when partial rendering is not enabled 
            if (Page != null && ScriptManager.SupportsPartialRendering && Visible) {
                ScriptControlDescriptor desc = new ScriptControlDescriptor("Sys.UI._UpdateProgress", ClientID); 
                string updatePanelClientID = null;
                if (!String.IsNullOrEmpty(AssociatedUpdatePanelID)) {
                    // Try both the NamingContainer and the Page
                    UpdatePanel c = ControlUtil.FindTargetControl(AssociatedUpdatePanelID, this, true) as UpdatePanel; 
                    if (c != null)
                        updatePanelClientID = c.ClientID; 
                    else { 
                        throw new InvalidOperationException(String.Format(CultureInfo.InvariantCulture, AtlasWeb.UpdateProgress_NoUpdatePanel, AssociatedUpdatePanelID));
                    } 
                }
                desc.AddProperty("associatedUpdatePanelId", updatePanelClientID);
                desc.AddProperty("dynamicLayout", DynamicLayout);
                desc.AddProperty("displayAfter", DisplayAfter); 
                yield return desc;
            } 
 
            yield break;
        } 

        string IAttributeAccessor.GetAttribute(string key) {
            return (_attributes != null) ? _attributes[key] : null;
        } 

        void IAttributeAccessor.SetAttribute(string key, string value) { 
            Attributes[key] = value; 
        }
 
        #region IScriptControl Members

        IEnumerable IScriptControl.GetScriptReferences() {
            return GetScriptReferences(); 
        }
 
        IEnumerable IScriptControl.GetScriptDescriptors() { 
            return GetScriptDescriptors();
        } 

        #endregion
    }
} 


// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
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UpdateProgress.cs source code in C# .NET

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