106 lines
3.2 KiB
C#
106 lines
3.2 KiB
C#
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namespace System.Web.UI.WebControls.Expressions {
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using System.Collections;
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using System.Collections.ObjectModel;
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using System.Diagnostics.CodeAnalysis;
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using System.Web;
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using System.Web.UI;
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public class DataSourceExpressionCollection : StateManagedCollection {
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private IQueryableDataSource _dataSource;
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private static readonly Type[] knownTypes = new Type[] {
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typeof(SearchExpression),
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typeof(MethodExpression),
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typeof(OrderByExpression),
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typeof(RangeExpression),
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typeof(PropertyExpression),
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typeof(CustomExpression),
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};
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public HttpContext Context {
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get;
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private set;
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}
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public Control Owner {
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get;
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private set;
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}
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public DataSourceExpression this[int index] {
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get {
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return (DataSourceExpression)((IList)this)[index];
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}
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set {
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((IList)this)[index] = value;
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}
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}
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// Allows for nested expression blocks to be initilaized after the fact
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internal void SetContext(Control owner, HttpContext context, IQueryableDataSource dataSource) {
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Owner = owner;
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Context = context;
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_dataSource = dataSource;
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foreach (DataSourceExpression expression in this) {
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expression.SetContext(owner, context, _dataSource);
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}
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}
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public void Add(DataSourceExpression expression) {
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((IList)this).Add(expression);
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}
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protected override object CreateKnownType(int index) {
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switch (index) {
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case 0:
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return new SearchExpression();
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case 1:
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return new MethodExpression();
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case 2:
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return new OrderByExpression();
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case 3:
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return new RangeExpression();
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case 4:
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return new PropertyExpression();
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case 5:
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return new CustomExpression();
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default:
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throw new ArgumentOutOfRangeException("index");
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}
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}
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public void CopyTo(DataSourceExpression[] expressionArray, int index) {
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base.CopyTo(expressionArray, index);
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}
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public void Contains(DataSourceExpression expression) {
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((IList)this).Contains(expression);
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}
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protected override Type[] GetKnownTypes() {
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return knownTypes;
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}
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public int IndexOf(DataSourceExpression expression) {
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return ((IList)this).IndexOf(expression);
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}
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public void Insert(int index, DataSourceExpression expression) {
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((IList)this).Insert(index, expression);
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}
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public void Remove(DataSourceExpression expression) {
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((IList)this).Remove(expression);
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}
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public void RemoveAt(int index) {
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((IList)this).RemoveAt(index);
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}
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protected override void SetDirtyObject(object o) {
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((DataSourceExpression)o).SetDirty();
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}
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}
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}
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