Code:
/ DotNET / DotNET / 8.0 / untmp / whidbey / REDBITS / ndp / fx / src / xsp / System / Web / UI / DesignTimeTemplateParser.cs / 1 / DesignTimeTemplateParser.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //----------------------------------------------------------------------------- namespace System.Web.UI { using System; using System.Collections; using System.ComponentModel; using System.ComponentModel.Design; using System.Configuration; using System.IO; using System.Globalization; using System.Security.Permissions; using System.Text; using System.Web; using System.Web.Util; using System.Web.Configuration; ///[AspNetHostingPermission(SecurityAction.LinkDemand, Level = AspNetHostingPermissionLevel.Minimal)] public static class DesignTimeTemplateParser { public static Control ParseControl(DesignTimeParseData data) { Control[] parsedControls = ParseControlsInternal(data, true); if (parsedControls.Length > 0) { return parsedControls[0]; } return null; } public static Control[] ParseControls(DesignTimeParseData data) { return ParseControlsInternal(data, false); } /// /// Convenience method for parsing one or more controls /// // DesignTimeTemplateParser is only meant for use within the designer [SecurityPermission(SecurityAction.Demand, Unrestricted = true)] internal static Control[] ParseControlsInternal(DesignTimeParseData data, bool returnFirst) { TemplateParser parser = new PageParser(); parser.FInDesigner = true; parser.DesignerHost = data.DesignerHost; parser.DesignTimeDataBindHandler = data.DataBindingHandler; parser.Text = data.ParseText; parser.Parse(); ArrayList parsedControls = new ArrayList(); ArrayList subBuilders = parser.RootBuilder.SubBuilders; if (subBuilders != null) { // Look for the first control builder IEnumerator en = subBuilders.GetEnumerator(); for (int i = 0; en.MoveNext(); i++) { object cur = en.Current; if ((cur is ControlBuilder) && !(cur is CodeBlockBuilder)) { // Instantiate the control ControlBuilder controlBuilder = (ControlBuilder)cur; System.Diagnostics.Debug.Assert(controlBuilder.CurrentFilterResolutionService == null); IServiceProvider builderServiceProvider = null; // If there's a designer host, use it as the service provider if (data.DesignerHost != null) { builderServiceProvider = data.DesignerHost; } // If it doesn't exist, use a default filter resolution service else { ServiceContainer serviceContainer = new ServiceContainer(); serviceContainer.AddService(typeof(IFilterResolutionService), new SimpleDesignTimeFilterResolutionService(data.Filter)); builderServiceProvider = serviceContainer; } controlBuilder.SetServiceProvider(builderServiceProvider); try { Control control = (Control)controlBuilder.BuildObject(data.ShouldApplyTheme); parsedControls.Add(control); } finally { controlBuilder.SetServiceProvider(null); } if (returnFirst) { break; } } // To preserve backwards compatibility, we don't add LiteralControls // to the control collection when parsing for a single control else if (!returnFirst && (cur is string)) { LiteralControl literalControl = new LiteralControl(cur.ToString()); parsedControls.Add(literalControl); } } } data.SetUserControlRegisterEntries(parser.UserControlRegisterEntries, parser.TagRegisterEntries); return (Control[])parsedControls.ToArray(typeof(Control)); } // DesignTimeTemplateParser is only meant for use within the designer [SecurityPermission(SecurityAction.Demand, Unrestricted = true)] public static ITemplate ParseTemplate(DesignTimeParseData data) { TemplateParser parser = new PageParser(); parser.FInDesigner = true; parser.DesignerHost = data.DesignerHost; parser.DesignTimeDataBindHandler = data.DataBindingHandler; parser.Text = data.ParseText; parser.Parse(); // Set the Text property of the TemplateBuilder to the input text parser.RootBuilder.Text = data.ParseText; parser.RootBuilder.SetDesignerHost(data.DesignerHost); return parser.RootBuilder; } public static ControlBuilder ParseTheme(IDesignerHost host, string theme, string themePath) { try { TemplateParser parser = new DesignTimePageThemeParser(themePath); parser.FInDesigner = true; parser.DesignerHost = host; parser.ThrowOnFirstParseError = true; parser.Text = theme; parser.Parse(); return parser.RootBuilder; } catch (Exception e) { throw new Exception(SR.GetString(SR.DesignTimeTemplateParser_ErrorParsingTheme) + " " + e.Message); } } // Implementation of IDeviceFilterTester used at design time private class SimpleDesignTimeFilterResolutionService : IFilterResolutionService { private string _currentFilter; public SimpleDesignTimeFilterResolutionService(string filter) { _currentFilter = filter; } #if ORCAS string IFilterResolutionService.CurrentFilter { get { if (_currentFilter == null) { return String.Empty; } return _currentFilter; } } #endif bool IFilterResolutionService.EvaluateFilter(string filterName) { if (String.IsNullOrEmpty(filterName)) { return true; } if (StringUtil.EqualsIgnoreCase(((_currentFilter == null) ? String.Empty : _currentFilter), filterName)) { return true; } return false; } int IFilterResolutionService.CompareFilters(string filter1, string filter2) { if (String.IsNullOrEmpty(filter1)) { if (!String.IsNullOrEmpty(filter2)) { return 1; } return 0; } if (String.IsNullOrEmpty(filter2)) { return -1; } return 0; } } } }
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