Code:
/ DotNET / DotNET / 8.0 / untmp / whidbey / REDBITS / ndp / fx / src / Designer / WebForms / System / Web / UI / Design / ResourceExpressionEditorSheet.cs / 1 / ResourceExpressionEditorSheet.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //----------------------------------------------------------------------------- namespace System.Web.UI.Design { using System.Collections; using System.ComponentModel; using System.Design; using System.Diagnostics; ////// Summary description for ResourceExpressionEditorSheet. /// public class ResourceExpressionEditorSheet : ExpressionEditorSheet { private string _classKey; private string _resourceKey; public ResourceExpressionEditorSheet(string expression, IServiceProvider serviceProvider) : base(serviceProvider) { // Parse the existing expression if it exists; if (!String.IsNullOrEmpty(expression)) { ResourceExpressionFields fields = ParseExpressionInternal(expression); ClassKey = fields.ClassKey; ResourceKey = fields.ResourceKey; } } [DefaultValue("")] [SRDescription(SR.ResourceExpressionEditorSheet_ClassKey)] public string ClassKey { get { if (_classKey == null) { return String.Empty; } return _classKey; } set { _classKey = value; } } public override bool IsValid { get { return !String.IsNullOrEmpty(ResourceKey); } } [DefaultValue("")] [SRDescription(SR.ResourceExpressionEditorSheet_ResourceKey)] [TypeConverter(typeof(ResourceKeyTypeConverter))] public string ResourceKey { get { if (_resourceKey == null) { return String.Empty; } return _resourceKey; } set { _resourceKey = value; } } public override string GetExpression() { string expression = String.Empty; if (!String.IsNullOrEmpty(_classKey)) { return _classKey + ", " + _resourceKey; } else { return _resourceKey; } } // The following syntaxes are accepted for the expression // resourceKey // classKey, resourceKey // private static ResourceExpressionFields ParseExpressionInternal(string expression) { ResourceExpressionFields fields = new ResourceExpressionFields(); int len = expression.Length; // Split the comma separated string string[] parts = expression.Split(','); int numOfParts = parts.Length; if (numOfParts > 2) return null; if (numOfParts == 1) { fields.ResourceKey = parts[0].Trim(); } else { fields.ClassKey = parts[0].Trim(); fields.ResourceKey = parts[1].Trim(); } return fields; } internal class ResourceExpressionFields { internal string ClassKey; internal string ResourceKey; } private class ResourceKeyTypeConverter : StringConverter { private static ICollection GetResourceKeys(IServiceProvider serviceProvider, string classKey) { DesignTimeResourceProviderFactory resourceProviderFactory = ControlDesigner.GetDesignTimeResourceProviderFactory(serviceProvider); System.Web.Compilation.IResourceProvider resProvider; if (String.IsNullOrEmpty(classKey)) { resProvider = resourceProviderFactory.CreateDesignTimeLocalResourceProvider(serviceProvider); } else { resProvider = resourceProviderFactory.CreateDesignTimeGlobalResourceProvider(serviceProvider, classKey); } if (resProvider != null) { System.Resources.IResourceReader resReader = resProvider.ResourceReader; if (resReader != null) { ArrayList resourceKeys = new ArrayList(); foreach (DictionaryEntry de in resReader) { resourceKeys.Add(de.Key); } return resourceKeys; } } return null; } public override StandardValuesCollection GetStandardValues(ITypeDescriptorContext context) { if (context != null) { if (context.Instance != null) { ResourceExpressionEditorSheet sheet = (ResourceExpressionEditorSheet)context.Instance; ICollection resourceKeys = GetResourceKeys(sheet.ServiceProvider, sheet.ClassKey); if ((resourceKeys != null) && (resourceKeys.Count > 0)) { return new StandardValuesCollection(resourceKeys); } } } return base.GetStandardValues(context); } public override bool GetStandardValuesExclusive(ITypeDescriptorContext context) { return false; } public override bool GetStandardValuesSupported(ITypeDescriptorContext context) { if (context != null) { if (context.Instance != null) { ResourceExpressionEditorSheet sheet = (ResourceExpressionEditorSheet)context.Instance; ICollection resourceKeys = GetResourceKeys(sheet.ServiceProvider, sheet.ClassKey); if ((resourceKeys != null) && (resourceKeys.Count > 0)) { return true; } } } return base.GetStandardValuesSupported(context); } } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. // Copyright (c) Microsoft Corporation. All rights reserved.
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