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// Copyright © Microsoft Corporation.
// This source file is subject to the Microsoft Permissive License.
// See http://www.microsoft.com/resources/sharedsource/licensingbasics/sharedsourcelicenses.mspx.
// All other rights reserved.
using System;
using System.Collections.Generic;
using System.Xml;
using System.Xml.XPath;
using System.Compiler;
using Microsoft.Ddue.Tools.Reflection;
namespace Microsoft.Ddue.Tools {
// XAML add in
public class XamlAttachedMembersAddIn : MRefBuilderAddIn {
private Dictionary < Object, Field > attachedMembers = new Dictionary < Object, Field >();
private Dictionary < TypeNode, Property > contentProperties = new Dictionary < TypeNode, Property >();
private ManagedReflectionWriter mrw;
public XamlAttachedMembersAddIn(ManagedReflectionWriter writer, XPathNavigator configuration) : base(writer, configuration) {
// keep track of the writer
mrw = writer;
// register processors as callbacks
writer.RegisterStartTagCallback("apis", new MRefBuilderCallback(AddAttachedMembers));
writer.RegisterStartTagCallback("apidata", new MRefBuilderCallback(WriteAttachedMember));
writer.RegisterStartTagCallback("typedata", new MRefBuilderCallback(WriteContentPropertyData));
writer.RegisterEndTagCallback("api", new MRefBuilderCallback(WriteAttachmentData));
}
private void AddAttachedMembers(XmlWriter writer, object info) {
NamespaceList spaces = (NamespaceList)info;
foreach (Namespace space in spaces) {
TypeNodeList types = space.Types;
foreach (TypeNode type in types) {
MemberList members = type.Members;
// go through the members, looking for fields signaling attached properties
foreach (Member member in members) {
// we need a visible, static, field...
if (!member.IsStatic || !member.IsVisibleOutsideAssembly || member.NodeType != NodeType.Field) continue;
Field field = (Field)member;
// of type dependency property....
if (field.Type.FullName != "System.Windows.DependencyProperty") continue;
// with a name ending in "Property"...
string name = field.Name.Name;
if (!name.EndsWith("Property")) continue;
name = name.Substring(0, name.Length - 8);
// look for a getter and/or a setter
Method getter = null;
MemberList candidateGetters = type.GetMembersNamed(new Identifier("Get" + name));
for (int i = 0; i < candidateGetters.Count; i++) {
Member candidateGetter = candidateGetters[i];
if ((candidateGetter.NodeType == NodeType.Method) && candidateGetter.IsStatic && candidateGetter.IsVisibleOutsideAssembly) getter = (Method)candidateGetter;
}
Method setter = null;
MemberList candidateSetters = type.GetMembersNamed(new Identifier("Set" + name));
for (int i = 0; i < candidateSetters.Count; i++) {
Member candidateSetter = candidateSetters[i];
if ((candidateSetter.NodeType == NodeType.Method) && candidateSetter.IsStatic && candidateSetter.IsVisibleOutsideAssembly) setter = (Method)candidateSetter;
}
if ((getter == null) && (setter == null)) continue;
// make sure there isn't already such a property
Property existingProperty = type.GetProperty(new Identifier(name), new TypeNode[0]);
if (existingProperty != null && existingProperty.IsVisibleOutsideAssembly) continue;
// okay, this really is an indication of an attached property, so create one
Property attachedProperty = new Property(type, null, PropertyFlags.None, new Identifier(name), getter, setter);
// attached properties have no parameters
attachedProperty.Parameters = ParameterList.Empty;
// attached properties are instance properties
// somehow mark as attached?
type.Members.Add(attachedProperty);
attachedMembers.Add(attachedProperty, field);
}
// go through the members, looking for fields signaling attached events
foreach (Member member in members) {
if (!member.IsStatic || !member.IsVisibleOutsideAssembly) continue;
if (member.NodeType != NodeType.Field) continue;
Field field = (Field)member;
if (field.Type.FullName != "System.Windows.RoutedEvent") continue;
string name = field.Name.Name;
if (!name.EndsWith("Event")) continue;
name = name.Substring(0, name.Length - 5);
Method adder = null;
MemberList candidateAdders = type.GetMembersNamed(new Identifier("Add" + name + "Handler"));
for (int i = 0; i < candidateAdders.Count; i++) {
Member candidateAdder = candidateAdders[i];
if ((candidateAdder.NodeType == NodeType.Method) && candidateAdder.IsStatic) adder = (Method)candidateAdder;
}
Method remover = null;
MemberList candidateRemovers = type.GetMembersNamed(new Identifier("Remove" + name + "Handler"));
for (int i = 0; i < candidateRemovers.Count; i++) {
Member candidateRemover = candidateRemovers[i];
if ((candidateRemover.NodeType == NodeType.Method) && candidateRemover.IsStatic) remover = (Method)candidateRemover;
}
if ((adder == null) || (remover == null)) continue;
// make sure there isn't already such an event
Event existingEvent = type.GetEvent(new Identifier(name));
if (existingEvent != null && existingEvent.IsVisibleOutsideAssembly) continue;
// okay, this really is an indication of an attached event, so create one
TypeNode handler = adder.Parameters[1].Type;
Event attachedEvent = new Event(type, null, EventFlags.None, new Identifier(name), adder, null, remover, handler);
attachedEvent.HandlerFlags = adder.Flags;
// attached events are instance events
// mark as attached?
type.Members.Add(attachedEvent);
attachedMembers.Add(attachedEvent, field);
}
}
}
}
private Property GetContentProperty(TypeNode type) {
return (null);
}
private void WriteAttachedMember(XmlWriter writer, object info) {
if (attachedMembers.ContainsKey(info)) {
if (info is Property) {
writer.WriteAttributeString("subsubgroup", "attachedProperty");
} else if (info is Event) {
writer.WriteAttributeString("subsubgroup", "attachedEvent");
}
}
}
private void WriteAttachmentData(XmlWriter writer, object info) {
if (attachedMembers.ContainsKey(info)) {
Member attachedMember = (Member)info;
if (attachedMember.NodeType == NodeType.Property) {
Property attachedProperty = (Property)attachedMember;
writer.WriteStartElement("attachedpropertydata");
string fieldName = attachedMember.Name + "Property";
Field field = attachedMember.DeclaringType.GetField(new Identifier(fieldName));
writer.WriteStartElement("field");
mrw.WriteMemberReference(field);
writer.WriteEndElement();
Method getter = attachedProperty.Getter;
if (getter != null) {
writer.WriteStartElement("getter");
mrw.WriteMemberReference(getter);
writer.WriteEndElement();
}
Method setter = attachedProperty.Setter;
if (setter != null) {
writer.WriteStartElement("setter");
mrw.WriteMemberReference(setter);
writer.WriteEndElement();
}
writer.WriteEndElement();
} else if (attachedMember.NodeType == NodeType.Event) {
Event attachedEvent = (Event)attachedMember;
writer.WriteStartElement("attachedeventdata");
string fieldName = attachedMember.Name + "Event";
Field field = attachedMember.DeclaringType.GetField(new Identifier(fieldName));
writer.WriteStartElement("field");
mrw.WriteMemberReference(field);
writer.WriteEndElement();
Method adder = attachedEvent.HandlerAdder;
writer.WriteStartElement("adder");
mrw.WriteMemberReference(adder);
writer.WriteEndElement();
Method remover = attachedEvent.HandlerRemover;
writer.WriteStartElement("remover");
mrw.WriteMemberReference(remover);
writer.WriteEndElement();
writer.WriteEndElement();
}
}
}
private void WriteContentPropertyData(XmlWriter writer, object info) {
TypeNode type = (TypeNode)info;
if (contentProperties.ContainsKey(type)) {
// get default constructors
InstanceInitializer constructor = type.GetConstructor(new TypeNode[0]);
if ((constructor != null) && (!constructor.IsPublic)) constructor = null;
if (constructor != null) writer.WriteAttributeString("defaultConstructor", mrw.ApiNamer.GetMemberName(constructor));
}
}
}
}
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