Code:
/ DotNET / DotNET / 8.0 / untmp / whidbey / REDBITS / ndp / fx / src / Designer / WebForms / System / Web / UI / Design / WebControls / SiteMapDataSourceDesigner.cs / 1 / SiteMapDataSourceDesigner.cs
//------------------------------------------------------------------------------ ////// Copyright (c) Microsoft Corporation. All Rights Reserved. /// Information Contained Herein is Proprietary and Confidential. /// //----------------------------------------------------------------------------- namespace System.Web.UI.Design.WebControls { using System; using System.Collections; using System.ComponentModel; using System.ComponentModel.Design; using System.Design; using System.Diagnostics; using System.Text; using System.Web; using System.Web.UI; using System.Web.UI.Design; using System.Web.UI.WebControls; ////// /// [System.Security.Permissions.SecurityPermission(System.Security.Permissions.SecurityAction.Demand, Flags=System.Security.Permissions.SecurityPermissionFlag.UnmanagedCode)] public class SiteMapDataSourceDesigner : HierarchicalDataSourceDesigner, IDataSourceDesigner { internal static readonly SiteMapSchema SiteMapHierarchicalSchema = new SiteMapSchema(); private SiteMapDataSource _siteMapDataSource; private SiteMapProvider _siteMapProvider; private static readonly string _siteMapNodeType = typeof(SiteMapNode).Name; public override bool CanRefreshSchema { get { return true; } } internal SiteMapProvider DesignTimeSiteMapProvider { get { if (_siteMapProvider == null) { IDesignerHost host = (IDesignerHost)GetService(typeof(IDesignerHost)); _siteMapProvider = new DesignTimeSiteMapProvider(host); } return _siteMapProvider; } } internal SiteMapDataSource SiteMapDataSource { get { return _siteMapDataSource; } } public override DesignerHierarchicalDataSourceView GetView(string viewPath) { return new SiteMapDesignerHierarchicalDataSourceView(this, viewPath); } public virtual string[] GetViewNames() { return new string[0]; } ////// Provides design-time support for the /// ///web control. /// public override void Initialize(IComponent component) { VerifyInitializeArgument(component, typeof(SiteMapDataSource)); base.Initialize(component); _siteMapDataSource = (SiteMapDataSource)component; } /// public override void OnComponentChanged(object sender, ComponentChangedEventArgs e) { base.OnComponentChanged(sender, e); OnDataSourceChanged(EventArgs.Empty); } public override void RefreshSchema(bool preferSilent) { try { SuppressDataSourceEvents(); Debug.Assert(CanRefreshSchema, "CanRefreshSchema is false - RefreshSchema should not be called"); // The schema of the SiteMapDataSource never changes, however // its design-time data can change. By clearing out the provider // we will cause a new one to be created on the next query for // design time data, and it will have all the changes from the // .sitemap file. _siteMapProvider = null; OnDataSourceChanged(EventArgs.Empty); } finally { ResumeDataSourceEvents(); } } internal class SiteMapSchema : IDataSourceSchema { IDataSourceViewSchema[] IDataSourceSchema.GetViews() { return new SiteMapDataSourceViewSchema[] {new SiteMapDataSourceViewSchema()}; } } internal class SiteMapDataSourceViewSchema : IDataSourceViewSchema { string IDataSourceViewSchema.Name { get { return _siteMapNodeType; } } IDataSourceViewSchema[] IDataSourceViewSchema.GetChildren() { return null; } IDataSourceFieldSchema[] IDataSourceViewSchema.GetFields() { return new SiteMapDataSourceTextField[] { SiteMapDataSourceTextField.DescriptionField, SiteMapDataSourceTextField.TitleField, SiteMapDataSourceTextField.UrlField, }; } } private class SiteMapDataSourceTextField : IDataSourceFieldSchema { internal static readonly SiteMapDataSourceTextField DescriptionField = new SiteMapDataSourceTextField("Description"); internal static readonly SiteMapDataSourceTextField TitleField = new SiteMapDataSourceTextField("Title"); internal static readonly SiteMapDataSourceTextField UrlField = new SiteMapDataSourceTextField("Url"); private string _fieldName; internal SiteMapDataSourceTextField(string fieldName) { _fieldName = fieldName; } Type IDataSourceFieldSchema.DataType { get { return typeof(string); } } bool IDataSourceFieldSchema.Identity { get { return false; } } bool IDataSourceFieldSchema.IsReadOnly { get { return true; } } bool IDataSourceFieldSchema.IsUnique { get { return false; } } int IDataSourceFieldSchema.Length { get { return -1; } } string IDataSourceFieldSchema.Name { get { return _fieldName; } } bool IDataSourceFieldSchema.Nullable { get { return true; } } int IDataSourceFieldSchema.Precision { get { return -1; } } bool IDataSourceFieldSchema.PrimaryKey { get { return false; } } int IDataSourceFieldSchema.Scale { get { return -1; } } } #region IDataSourceDesigner implementation bool IDataSourceDesigner.CanConfigure { get { return CanConfigure; } } bool IDataSourceDesigner.CanRefreshSchema { get { return CanRefreshSchema; } } event EventHandler IDataSourceDesigner.DataSourceChanged { add { DataSourceChanged += value; } remove { DataSourceChanged -= value; } } event EventHandler IDataSourceDesigner.SchemaRefreshed { add { SchemaRefreshed += value; } remove { SchemaRefreshed -= value; } } void IDataSourceDesigner.Configure() { Configure(); } DesignerDataSourceView IDataSourceDesigner.GetView(string viewName) { return new SiteMapDesignerDataSourceView(this, viewName); } string[] IDataSourceDesigner.GetViewNames() { return GetViewNames(); } void IDataSourceDesigner.RefreshSchema(bool preferSilent) { RefreshSchema(preferSilent); } void IDataSourceDesigner.ResumeDataSourceEvents() { ResumeDataSourceEvents(); } void IDataSourceDesigner.SuppressDataSourceEvents() { SuppressDataSourceEvents(); } #endregion } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. // Copyright (c) Microsoft Corporation. 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