Code:
/ DotNET / DotNET / 8.0 / untmp / whidbey / REDBITS / ndp / fx / src / Designer / Host / Serialization / LocalizationCodeDomSerializer.cs / 1 / LocalizationCodeDomSerializer.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //----------------------------------------------------------------------------- namespace System.ComponentModel.Design.Serialization { using System; using System.CodeDom; using System.Collections; using System.ComponentModel; using System.ComponentModel.Design; using System.Diagnostics; using System.Globalization; using System.IO; using System.Reflection; using System.Resources; using System.Runtime.Serialization; ////// Code model serializer for resource managers. This is called /// in one of two ways. On Deserialization, we are associated /// with a ResourceManager object. Instead of creating a /// ResourceManager, however, we create an object called a /// SerializationResourceManager. This class inherits /// from ResourceManager, but overrides all of the methods. /// Instead of letting resource manager maintain resource /// sets, it uses the designer host's IResourceService /// for this purpose. /// /// During serialization, this class will also create /// a SerializationResourceManager. This will be added /// to the serialization manager as a service so other /// resource serializers can get at it. SerializationResourceManager /// has additional methods on it to support writing data /// into the resource streams for various cultures. /// internal class LocalizationCodeDomSerializer: CodeDomSerializer { private CodeDomLocalizationModel _model; private CodeDomSerializer _currentSerializer; ////// Only we can create an instance of this. Everyonen else accesses it though /// static properties. /// internal LocalizationCodeDomSerializer(CodeDomLocalizationModel model, object currentSerializer) { _model = model; _currentSerializer = currentSerializer as CodeDomSerializer; } ////// Returns true if we should emit an ApplyResources method for this object. We only emit /// this method once during serialization, and we track this by appending an object to /// the context stack. /// private bool EmitApplyMethod(IDesignerSerializationManager manager, object owner) { ApplyMethodTable table = (ApplyMethodTable)manager.Context[typeof(ApplyMethodTable)]; if (table == null) { table = new ApplyMethodTable(); manager.Context.Append(table); } if (!table.Contains(owner)) { table.Add(owner); return true; } return false; } ////// Serializes the given object into a CodeDom object. This uses the stock /// resource serialization scheme and retains the expression it provides. /// public override object Serialize(IDesignerSerializationManager manager, object value) { PropertyDescriptor desc = (PropertyDescriptor)manager.Context[typeof(PropertyDescriptor)]; ExpressionContext tree = (ExpressionContext)manager.Context[typeof(ExpressionContext)]; bool isSerializable = (value != null) ? TypeDescriptor.GetReflectionType(value).IsSerializable : true; // If value is not serializable, we have no option but to call the original serializer, // since we cannot push this into resources. bool callExistingSerializer = !isSerializable; // Compat: If we are serializing content, we need to skip property reflection to preserve compatibility, // since tools like WinRes expect items in collections (like TreeNodes and ListViewItems) // to be serialized as binary blobs. bool serializingContent = (desc != null && desc.Attributes.Contains(DesignerSerializationVisibilityAttribute.Content)); // We also skip back to the original serializer if there is a preset value for this object. if (!callExistingSerializer) { callExistingSerializer = tree != null && tree.PresetValue == value; } if (_model == CodeDomLocalizationModel.PropertyReflection && !serializingContent && !callExistingSerializer) { // For a property reflecting model, we need to do more work. Here we need to find // the object we are serializing against and inject an "ApplyResources" method // against the object and its name. If any of this machinery fails we will // just return the existing expression which will default to the original behavior. CodeStatementCollection statements = (CodeStatementCollection)manager.Context[typeof(CodeStatementCollection)]; // In the case of extender properties, we don't want to serialize using the property // reflecting model. In this case we'll skip it and fall through to the // property assignment model. bool skipPropertyReflect = false; ExtenderProvidedPropertyAttribute attr = null; if (desc != null) { attr = desc.Attributes[typeof(ExtenderProvidedPropertyAttribute)] as ExtenderProvidedPropertyAttribute; if (attr != null && attr.ExtenderProperty != null) { skipPropertyReflect = true; } } if (!skipPropertyReflect && tree != null && statements != null) { string name = manager.GetName(tree.Owner); CodeExpression ownerExpression = SerializeToExpression(manager, tree.Owner); if (name != null && ownerExpression != null) { RootContext rootCxt = manager.Context[typeof(RootContext)] as RootContext; if (rootCxt != null && rootCxt.Value == tree.Owner) { name = "$this"; } // Ok, if we got here it means we have enough data to emit // using the reflection model. SerializeToResourceExpression(manager, value, false); if (EmitApplyMethod(manager, tree.Owner)) { ResourceManager rm = manager.Context[typeof(ResourceManager)] as ResourceManager; Debug.Assert(rm != null, "No resource manager available in context."); CodeExpression rmExpression = GetExpression(manager, rm); Debug.Assert(rmExpression != null, "No expression available for resource manager."); CodeMethodReferenceExpression methodRef = new CodeMethodReferenceExpression(rmExpression, "ApplyResources"); CodeMethodInvokeExpression methodInvoke = new CodeMethodInvokeExpression(); methodInvoke.Method = methodRef; methodInvoke.Parameters.Add(ownerExpression); methodInvoke.Parameters.Add(new CodePrimitiveExpression(name)); statements.Add(methodInvoke); } return null; // we have already worked our statements into the tree. } } } if (callExistingSerializer) { return _currentSerializer.Serialize(manager, value); } else { return SerializeToResourceExpression(manager, value); } } ////// This class is used as a table to track which objects we've injected the "ApplyResources" method for. /// private class ApplyMethodTable { private Hashtable _table = new Hashtable(); internal bool Contains(object value) { return _table.ContainsKey(value); } internal void Add(object value) { _table.Add(value, value); } } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. // Copyright (c) Microsoft Corporation. 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