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//------------------------------------------------------------------------------
// <copyright file="Shape.cs" company="Microsoft">
// Copyright (c) Microsoft Corporation. All rights reserved.
// </copyright>
// <owner current="true" primary="true">derekdb</owner>
//------------------------------------------------------------------------------
#if ENABLEDATABINDING
using System;
using System.Xml;
using System.Xml.Schema;
using System.Xml.XPath;
using System.Collections;
using System.Diagnostics;
using System.ComponentModel;
using System.Text;
namespace System.Xml.XPath.DataBinding
{
internal enum BindingType {
Text,
Element,
Attribute,
ElementNested,
Repeat,
Sequence,
Choice,
All
}
internal sealed class Shape
{
string name;
BindingType bindingType;
ArrayList particles; // XmlSchemaElement or XmlSchemaAttribute
ArrayList subShapes;
Shape nestedShape;
PropertyDescriptor[] propertyDescriptors;
XmlSchemaElement containerDecl;
static object[] emptyIList = new object[0];
public Shape(string name, BindingType bindingType)
{
this.name = name;
this.bindingType = bindingType;
}
public string Name {
get { return this.name; }
set { this.name = value; }
}
public BindingType BindingType {
get { return this.bindingType; }
set { this.bindingType = value; }
}
public XmlSchemaElement ContainerDecl {
get { return this.containerDecl; }
set { this.containerDecl = value; }
}
public bool IsNestedTable {
get {
switch (this.BindingType) {
case BindingType.ElementNested:
case BindingType.Repeat:
case BindingType.Sequence:
case BindingType.Choice:
case BindingType.All:
return true;
default:
return false;
}
}
}
public bool IsGroup {
get {
switch (this.BindingType) {
case BindingType.Sequence:
case BindingType.Choice:
case BindingType.All:
return true;
default:
return false;
}
}
}
public XmlSchemaType SchemaType {
get {
switch (this.bindingType) {
case BindingType.Text:
case BindingType.Element:
case BindingType.ElementNested: {
Debug.Assert(this.particles.Count == 1);
XmlSchemaElement xse = (XmlSchemaElement)this.particles[0];
return xse.ElementSchemaType;
}
case BindingType.Attribute: {
Debug.Assert(this.particles.Count == 1);
XmlSchemaAttribute xsa = (XmlSchemaAttribute)this.particles[0];
return xsa.AttributeSchemaType;
}
default:
return null;
}
}
}
public XmlSchemaElement XmlSchemaElement {
get {
switch (this.bindingType) {
case BindingType.Text:
case BindingType.Element:
case BindingType.ElementNested: {
Debug.Assert(this.particles.Count == 1);
return (XmlSchemaElement)this.particles[0];
}
default:
return this.containerDecl;
}
}
}
public IList Particles {
get {
if (null == this.particles)
return emptyIList;
return this.particles;
}
}
public IList SubShapes {
get {
if (null == this.subShapes)
return emptyIList;
return this.subShapes;
}
}
public Shape SubShape(int i) {
return (Shape)SubShapes[i];
}
public Shape NestedShape {
get {
//Debug.Assert(this.bindingType == BindingType.ElementNested);
return this.nestedShape;
}
set {
this.nestedShape = value;
}
}
public XmlQualifiedName AttributeName {
get {
Debug.Assert(this.bindingType == BindingType.Attribute);
XmlSchemaAttribute xsa = (XmlSchemaAttribute)this.particles[0];
return xsa.QualifiedName;
}
}
public void Clear() {
if (this.subShapes != null) {
this.subShapes.Clear();
this.subShapes = null;
}
if (this.particles != null) {
this.particles.Clear();
this.particles = null;
}
}
public void AddParticle(XmlSchemaElement elem) {
if (null == this.particles)
this.particles = new ArrayList();
Debug.Assert(this.bindingType != BindingType.Attribute);
this.particles.Add(elem);
}
public void AddParticle(XmlSchemaAttribute elem) {
Debug.Assert(this.bindingType == BindingType.Attribute);
Debug.Assert(this.particles == null);
this.particles = new ArrayList();
this.particles.Add(elem);
}
public void AddSubShape(Shape shape) {
if (null == this.subShapes)
this.subShapes = new ArrayList();
this.subShapes.Add(shape);
foreach (object p in shape.Particles) {
XmlSchemaElement xse = p as XmlSchemaElement;
if (null != xse)
AddParticle(xse);
}
}
public void AddAttrShapeAt(Shape shape, int pos) {
if (null == this.subShapes)
this.subShapes = new ArrayList();
this.subShapes.Insert(pos, shape);
}
public string[] SubShapeNames() {
string[] names = new string[SubShapes.Count];
for (int i=0; i<SubShapes.Count; i++)
names[i] = this.SubShape(i).Name;
return names;
}
public PropertyDescriptor[] PropertyDescriptors {
get {
if (null == this.propertyDescriptors) {
PropertyDescriptor[] descs;
switch (this.BindingType) {
case BindingType.Element:
case BindingType.Text:
case BindingType.Attribute:
case BindingType.Repeat:
descs = new PropertyDescriptor[1];
descs[0] = new XPathNodeViewPropertyDescriptor(this);
break;
case BindingType.ElementNested:
descs = this.nestedShape.PropertyDescriptors;
break;
case BindingType.Sequence:
case BindingType.Choice:
case BindingType.All:
descs = new PropertyDescriptor[SubShapes.Count];
for (int i=0; i < descs.Length; i++) {
descs[i] = new XPathNodeViewPropertyDescriptor(this, this.SubShape(i), i);
}
break;
default:
throw new NotSupportedException();
}
this.propertyDescriptors = descs;
}
return this.propertyDescriptors;
}
}
public int FindNamedSubShape(string name) {
for (int i=0; i<SubShapes.Count; i++) {
Shape shape = SubShape(i);
if (shape.Name == name)
return i;
}
return -1;
}
public int FindMatchingSubShape(object particle) {
for (int i=0; i<SubShapes.Count; i++) {
Shape shape = SubShape(i);
if (shape.IsParticleMatch(particle))
return i;
}
return -1;
}
public bool IsParticleMatch(object particle) {
for (int i=0; i<this.particles.Count; i++) {
if (particle == this.particles[i])
return true;
}
return false;
}
#if DEBUG
public string DebugDump() {
StringBuilder sb = new StringBuilder();
DebugDump(sb,"");
return sb.ToString();
}
void DebugDump(StringBuilder sb, String indent) {
sb.AppendFormat("{0}{1} '{2}'", indent, this.BindingType.ToString(), this.Name);
if (this.subShapes != null) {
sb.AppendLine(" {");
string subindent = String.Concat(indent, " ");
foreach (Shape s in this.SubShapes) {
s.DebugDump(sb, subindent);
}
sb.Append(indent);
sb.Append('}');
}
sb.AppendLine();
}
#endif
}
}
#endif
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