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116 lines
3.5 KiB
116 lines
3.5 KiB
/************************************************************************
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Extended WPF Toolkit
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Copyright (C) 2010-2012 Xceed Software Inc.
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This program is provided to you under the terms of the Microsoft Public
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License (Ms-PL) as published at http://wpftoolkit.codeplex.com/license
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This program can be provided to you by Xceed Software Inc. under a
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proprietary commercial license agreement for use in non-Open Source
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projects. The commercial version of Extended WPF Toolkit also includes
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priority technical support, commercial updates, and many additional
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useful WPF controls if you license Xceed Business Suite for WPF.
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Visit http://xceed.com and follow @datagrid on Twitter.
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**********************************************************************/
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using System.Collections.Generic;
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using System.Collections.ObjectModel;
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using System.ComponentModel;
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using System.Windows.Data;
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using System;
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using System.Collections.Specialized;
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using System.Diagnostics;
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namespace Xceed.Wpf.Toolkit.PropertyGrid
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{
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public class PropertyItemCollection : ReadOnlyObservableCollection<PropertyItem>
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{
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private bool _preventNotification;
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public PropertyItemCollection(ObservableCollection<PropertyItem> editableCollection)
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:base(editableCollection)
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{
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EditableCollection = editableCollection;
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}
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public ObservableCollection<PropertyItem> EditableCollection { get; private set; }
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private ICollectionView GetDefaultView()
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{
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return CollectionViewSource.GetDefaultView( this );
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}
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public void GroupBy( string name )
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{
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GetDefaultView().GroupDescriptions.Add( new PropertyGroupDescription( name ) );
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}
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public void SortBy( string name, ListSortDirection sortDirection )
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{
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GetDefaultView().SortDescriptions.Add( new SortDescription( name, sortDirection ) );
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}
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public void Filter( string text )
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{
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if( text == null )
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return;
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GetDefaultView().Filter = ( item ) =>
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{
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var property = item as PropertyItem;
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return property.DisplayName.ToLower().StartsWith( text.ToLower() );
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};
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}
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protected override void OnCollectionChanged( NotifyCollectionChangedEventArgs args )
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{
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if( _preventNotification )
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return;
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base.OnCollectionChanged( args );
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}
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internal void Update( IEnumerable<PropertyItem> newItems, bool isCategorized, string filter )
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{
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using( GetDefaultView().DeferRefresh() )
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{
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_preventNotification = true;
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// Replace the collection content with the new items.
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if( newItems != null )
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{
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EditableCollection.Clear();
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foreach( var item in newItems )
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{
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this.EditableCollection.Add( item );
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}
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}
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// Clear view values
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ICollectionView view = this.GetDefaultView();
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view.GroupDescriptions.Clear();
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view.SortDescriptions.Clear();
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view.Filter = null;
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// Update view values
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if( isCategorized )
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{
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GroupBy( "Category" );
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SortBy( "Category", ListSortDirection.Ascending );
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}
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SortBy( "PropertyOrder", ListSortDirection.Ascending );
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SortBy( "DisplayName", ListSortDirection.Ascending );
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Filter( filter );
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_preventNotification = false;
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OnCollectionChanged( new NotifyCollectionChangedEventArgs( NotifyCollectionChangedAction.Reset ) );
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}
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}
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}
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}
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