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/*************************************************************************************
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Extended WPF Toolkit
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Copyright (C) 2007-2013 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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For more features, controls, and fast professional support,
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pick up the Plus Edition at http://xceed.com/wpf_toolkit
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Stay informed: follow @datagrid on Twitter or Like http://facebook.com/datagrids
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***********************************************************************************/
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using System;
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using System.Collections;
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using System.Collections.Generic;
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using System.Diagnostics;
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using System.Windows;
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using System.Windows.Media;
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using Xceed.Wpf.Toolkit.Core.Utilities;
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using System.Linq;
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using System.Runtime.Serialization;
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using System.Security;
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namespace Xceed.Wpf.Toolkit
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{
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public partial class CollectionControlDialogBase :
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Window
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{
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}
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/// <summary>
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/// Interaction logic for CollectionControlDialog.xaml
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/// </summary>
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public partial class CollectionControlDialog : CollectionControlDialogBase
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{
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#region Private Members
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private IList originalData = new List<object>();
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#endregion
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#region Properties
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public static readonly DependencyProperty ItemsSourceProperty = DependencyProperty.Register( "ItemsSource", typeof( IEnumerable ), typeof( CollectionControlDialog ), new UIPropertyMetadata( null ) );
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public IEnumerable ItemsSource
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{
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get
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{
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return (IEnumerable)GetValue( ItemsSourceProperty );
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}
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set
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{
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SetValue( ItemsSourceProperty, value );
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}
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}
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public static readonly DependencyProperty ItemsSourceTypeProperty = DependencyProperty.Register( "ItemsSourceType", typeof( Type ), typeof( CollectionControlDialog ), new UIPropertyMetadata( null ) );
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public Type ItemsSourceType
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{
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get
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{
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return ( Type )GetValue( ItemsSourceTypeProperty );
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}
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set
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{
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SetValue( ItemsSourceTypeProperty, value );
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}
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}
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public static readonly DependencyProperty NewItemTypesProperty = DependencyProperty.Register( "NewItemTypes", typeof( IList ), typeof( CollectionControlDialog ), new UIPropertyMetadata( null ) );
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public IList<Type> NewItemTypes
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{
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get
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{
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return ( IList<Type> )GetValue( NewItemTypesProperty );
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}
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set
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{
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SetValue( NewItemTypesProperty, value );
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}
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}
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public static readonly DependencyProperty IsReadOnlyProperty = DependencyProperty.Register( "IsReadOnly", typeof( bool ), typeof( CollectionControlDialog ), new UIPropertyMetadata( false ) );
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public bool IsReadOnly
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{
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get
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{
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return ( bool )GetValue( IsReadOnlyProperty );
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}
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set
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{
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SetValue( IsReadOnlyProperty, value );
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}
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}
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public CollectionControl CollectionControl
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{
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get
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{
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return _collectionControl;
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}
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}
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#endregion //Properties
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#region Constructors
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public CollectionControlDialog()
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{
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InitializeComponent();
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}
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public CollectionControlDialog( Type itemsourceType )
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: this()
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{
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ItemsSourceType = itemsourceType;
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}
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public CollectionControlDialog( Type itemsourceType, IList<Type> newItemTypes )
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: this( itemsourceType )
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{
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NewItemTypes = newItemTypes;
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}
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#endregion //Constructors
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#region Overrides
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protected override void OnSourceInitialized( EventArgs e )
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{
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base.OnSourceInitialized( e );
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//Backup data in case "Cancel" is clicked.
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if( this.ItemsSource != null )
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{
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foreach( var item in this.ItemsSource )
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{
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originalData.Add( this.Clone( item ) );
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}
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}
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}
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#endregion
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#region Event Handlers
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private void OkButton_Click( object sender, RoutedEventArgs e )
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{
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if( this.ItemsSource is IDictionary )
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{
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if( !this.AreDictionaryKeysValid() )
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{
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MessageBox.Show( "All dictionary items should have distinct non-null Key values.", "Warning" );
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return;
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}
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}
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_collectionControl.PersistChanges();
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this.DialogResult = true;
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this.Close();
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}
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private void CancelButton_Click( object sender, RoutedEventArgs e )
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{
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_collectionControl.PersistChanges( originalData );
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this.DialogResult = false;
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this.Close();
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}
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#endregion //Event Hanlders
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#region Private Methods
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[SecuritySafeCritical]
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private object Clone( object source )
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{
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if( source == null )
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return null;
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object result = null;
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var sourceType = source.GetType();
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// For IDictionary, we need to create EditableKeyValuePair to edit the Key-Value.
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if( (this.ItemsSource is IDictionary)
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&& sourceType.IsGenericType
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&& typeof( KeyValuePair<,> ).IsAssignableFrom( sourceType.GetGenericTypeDefinition() ) )
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{
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result = this.GenerateEditableKeyValuePair( source );
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}
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else
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{
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// Initialized a new object with default values
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result = FormatterServices.GetUninitializedObject( sourceType );
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var constructor = sourceType.GetConstructor( Type.EmptyTypes );
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if( constructor == null )
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return null;
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constructor.Invoke( result, null );
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}
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Debug.Assert( result != null );
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if( result != null )
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{
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var properties = sourceType.GetProperties();
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foreach( var propertyInfo in properties )
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{
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var parameters = propertyInfo.GetIndexParameters();
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var index = parameters.GetLength( 0 ) == 0 ? null : new object[] { parameters.GetLength( 0 ) - 1 };
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var propertyInfoValue = propertyInfo.GetValue( source, index );
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if( propertyInfo.CanWrite )
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{
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// Look for nested object
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if( propertyInfo.PropertyType.IsClass
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&& (propertyInfo.PropertyType != typeof( Transform ))
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&& !propertyInfo.PropertyType.Equals( typeof( string ) ) )
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{
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// We have a Collection/List of T.
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if( propertyInfo.PropertyType.IsGenericType )
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{
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// Clone sub-objects if the T are non-primitive types objects.
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var arg = propertyInfo.PropertyType.GetGenericArguments().FirstOrDefault();
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if( (arg != null) && !arg.IsPrimitive && !arg.Equals( typeof( String ) ) && !arg.IsEnum )
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{
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var nestedObject = this.Clone( propertyInfoValue );
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propertyInfo.SetValue( result, nestedObject, null );
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}
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else
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{
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// copy object if the T are primitive types objects.
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propertyInfo.SetValue( result, propertyInfoValue, null );
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}
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}
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else
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{
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var nestedObject = this.Clone( propertyInfoValue );
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if( nestedObject != null )
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{
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// For T object included in List/Collections, Add it to the List/Collection of T.
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if( index != null )
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{
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result.GetType().GetMethod( "Add" ).Invoke( result, new[] { nestedObject } );
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}
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else
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{
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propertyInfo.SetValue( result, nestedObject, null );
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}
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}
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}
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}
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else
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{
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// copy regular object
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propertyInfo.SetValue( result, propertyInfoValue, null );
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}
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}
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}
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}
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return result;
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}
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private object GenerateEditableKeyValuePair( object source )
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{
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var sourceType = source.GetType();
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if( (sourceType.GetGenericArguments() == null) || (sourceType.GetGenericArguments().GetLength( 0 ) != 2) )
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return null;
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var propInfoKey = sourceType.GetProperty( "Key" );
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var propInfoValue = sourceType.GetProperty( "Value" );
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if( (propInfoKey != null) && (propInfoValue != null) )
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{
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return ListUtilities.CreateEditableKeyValuePair( propInfoKey.GetValue( source, null )
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, sourceType.GetGenericArguments()[ 0 ]
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, propInfoValue.GetValue( source, null )
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, sourceType.GetGenericArguments()[ 1 ] );
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}
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return null;
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}
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private bool AreDictionaryKeysValid()
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{
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var keys = _collectionControl.Items.Select( x =>
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{
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var keyType = x.GetType().GetProperty( "Key" );
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if( keyType != null )
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{
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return keyType.GetValue( x, null );
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}
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return null;
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} );
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return (keys.Distinct().Count() == _collectionControl.Items.Count )
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&& keys.All( x => x != null );
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}
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#endregion
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}
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}
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