76 строки
2.4 KiB
C#
76 строки
2.4 KiB
C#
//
|
|
// ListSourceNotifyWrapper.cs
|
|
//
|
|
// Author:
|
|
// Eric Maupin <ermau@xamarin.com>
|
|
//
|
|
// Copyright (c) 2012 Xamarin, Inc.
|
|
//
|
|
// Permission is hereby granted, free of charge, to any person obtaining a copy
|
|
// of this software and associated documentation files (the "Software"), to deal
|
|
// in the Software without restriction, including without limitation the rights
|
|
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
|
// copies of the Software, and to permit persons to whom the Software is
|
|
// furnished to do so, subject to the following conditions:
|
|
//
|
|
// The above copyright notice and this permission notice shall be included in
|
|
// all copies or substantial portions of the Software.
|
|
//
|
|
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
|
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
|
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
|
// THE SOFTWARE.
|
|
|
|
using System;
|
|
using System.Collections;
|
|
using System.Collections.Specialized;
|
|
|
|
namespace Xwt.WPFBackend
|
|
{
|
|
internal class ListSourceNotifyWrapper
|
|
: IEnumerable, INotifyCollectionChanged
|
|
{
|
|
public ListSourceNotifyWrapper (IListDataSource source)
|
|
{
|
|
if (source == null)
|
|
throw new ArgumentNullException ("source");
|
|
|
|
this.source = source;
|
|
this.source.RowInserted += OnRowsUpdated;
|
|
this.source.RowChanged += OnRowsUpdated;
|
|
this.source.RowsReordered += OnRowsUpdated;
|
|
this.source.RowDeleted += OnRowsUpdated;
|
|
}
|
|
|
|
public event NotifyCollectionChangedEventHandler CollectionChanged;
|
|
|
|
public IEnumerator GetEnumerator ()
|
|
{
|
|
int cols = this.source.ColumnTypes.Length;
|
|
for (int i = 0; i < this.source.RowCount; ++i) {
|
|
object[] row = new object[cols];
|
|
for (int c = 0; c < row.Length; ++c)
|
|
row [c] = this.source.GetValue (i, c);
|
|
|
|
yield return row;
|
|
}
|
|
}
|
|
|
|
private readonly IListDataSource source;
|
|
|
|
private void OnRowsUpdated (object sender, ListRowEventArgs e)
|
|
{
|
|
OnCollectionChanged (new NotifyCollectionChangedEventArgs (NotifyCollectionChangedAction.Reset));
|
|
}
|
|
|
|
private void OnCollectionChanged (NotifyCollectionChangedEventArgs e)
|
|
{
|
|
var changed = this.CollectionChanged;
|
|
if (changed != null)
|
|
changed (this, e);
|
|
}
|
|
}
|
|
} |