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ColumnChooserDemo.xaml.cs
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ColumnChooserDemo.xaml.cs
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using Common;
using Syncfusion.UI.Xaml.Grid;
using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.IO;
using System.Linq;
using System.Runtime.InteropServices.WindowsRuntime;
using Windows.Foundation;
using Windows.Foundation.Collections;
using Windows.UI.Xaml;
using Windows.UI.Xaml.Controls;
using Windows.UI.Xaml.Controls.Primitives;
using Windows.UI.Xaml.Data;
using Windows.UI.Xaml.Input;
using Windows.UI.Xaml.Media;
using Windows.UI.Xaml.Navigation;
// The User Control item template is documented at http://go.microsoft.com/fwlink/?LinkId=234236
namespace DataGrid
{
public sealed partial class ColumnChooserDemo : SampleLayout
{
ColumnChooser chooserWindow;
OrderInfoViewModel viewModel;
public ColumnChooserDemo()
{
this.InitializeComponent();
this.DataContext = viewModel = new OrderInfoViewModel();
this.sfGrid.Loaded += OnSfDataGridLoaded;
this.sfGrid.Unloaded += OnSfDataGridUnloaded;
}
/// <summary>
/// Occurs when the SfDataGrid is laid out, rendered, and ready for interaction.
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
void OnSfDataGridLoaded(object sender, RoutedEventArgs e)
{
chooserWindow = new ColumnChooser(this.sfGrid);
chooserWindow.Resources.MergedDictionaries.Clear();
this.sfGrid.GridColumnDragDropController = new GridColumnChooserController(this.sfGrid, chooserWindow);
ShowColumnChooser();
viewModel.toggled = OnToggled;
viewModel.ColumnChooserCommand = new DelegateCommand<object>(ColumnChooserCommandHandler);
chooserWindow.Popup.Closed += OnPopup_Closed;
}
/// <summary>
/// Occurs when the SfDataGrid is removed from within an element tree of loaded elements.
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
void OnSfDataGridUnloaded(object sender, RoutedEventArgs e)
{
chooserWindow.Popup.IsOpen = false;
viewModel.CustomChooser.IsOpen = false;
}
/// <summary>
/// Column Chooser Command Handler
/// </summary>
/// <param name="param"></param>
public void ColumnChooserCommandHandler(object param)
{
if (param == null)
return;
else if (param.ToString().Equals("ShowColumnChooser"))
{
if (viewModel.ShowColumnChooser)
ShowColumnChooser();
else
{
chooserWindow.Popup.IsOpen = false;
viewModel.CustomChooser.IsOpen = false;
}
}
else
{
chooserWindow.Popup.IsOpen = false;
viewModel.CustomChooser.IsOpen = false;
viewModel.ShowColumnChooser = false;
}
}
/// <summary>
/// Shows the ColumnChosser
/// </summary>
void ShowColumnChooser()
{
if (viewModel.ShowColumnChooser && viewModel.UseDefaultColumnChooser)
{
chooserWindow.Popup.HorizontalOffset = (this.sfGrid.ActualWidth) / 2 + (200);
chooserWindow.Popup.VerticalOffset = (this.sfGrid.ActualHeight) / 2 - (100);
chooserWindow.Popup.IsOpen = true;
viewModel.CustomChooser.IsOpen = false;
}
else if (viewModel.ShowColumnChooser && viewModel.UseCustomColumnChooser)
{
var visibleColumns = this.sfGrid.Columns;
ObservableCollection<ColumnChooserItems> totalColumns = GetColumnsDetails(visibleColumns);
CustomColumnChooserViewModel chooserViewModel = new CustomColumnChooserViewModel(totalColumns);
CustomColumnChooser ColumnChooserView = new CustomColumnChooser(this.sfGrid, chooserViewModel, totalColumns);
viewModel.CustomChooser.Child = ColumnChooserView;
chooserWindow.Popup.IsOpen = false;
viewModel.CustomChooser.HorizontalOffset = (this.sfGrid.ActualWidth / 2) - (75) + (200);
viewModel.CustomChooser.VerticalOffset = (this.sfGrid.ActualHeight / 2) - (75)- (100);
viewModel.CustomChooser.IsOpen = true;
viewModel.CustomChooser.Closed += OnCustomChooser_Closed;
}
}
/// <summary>
/// Occurs when CustomColumnChosser is closed
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
void OnCustomChooser_Closed(object sender, object e)
{
viewModel.ShowColumnChooser = false;
}
/// <summary>
/// Show the Toggled button
/// </summary>
private void OnToggled()
{
if (viewModel.ShowColumnChooser)
ShowColumnChooser();
else
{
chooserWindow.Popup.IsOpen = false;
viewModel.CustomChooser.IsOpen = false;
}
}
/// <summary>
/// Occurs when the popup is closed
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void OnPopup_Closed(object sender, object e)
{
viewModel.ShowColumnChooser = false;
}
/// <summary>
/// Get the column details
/// </summary>
/// <param name="totalVisibleColumns"></param>
/// <returns></returns>
public static ObservableCollection<ColumnChooserItems> GetColumnsDetails(Columns totalVisibleColumns)
{
ObservableCollection<ColumnChooserItems> totalColumns = new ObservableCollection<ColumnChooserItems>();
foreach (var actualColumn in totalVisibleColumns)
{
ColumnChooserItems item = new ColumnChooserItems();
if (actualColumn.IsHidden)
{
item.IsChecked = false;
item.Name = actualColumn.MappingName;
}
else
{
item.IsChecked = true;
item.Name = actualColumn.MappingName;
}
totalColumns.Add(item);
}
return totalColumns;
}
/// <summary>
/// Dispose of unmanaged resources.
/// </summary>
public sealed override void Dispose()
{
this.Resources.Clear();
chooserWindow.Popup.IsOpen = false;
viewModel.CustomChooser.IsOpen = false;
this.sfGrid.Loaded -= OnSfDataGridLoaded;
this.sfGrid.Unloaded -= OnSfDataGridUnloaded;
if (viewModel != null && viewModel.CustomChooser != null)
viewModel.CustomChooser.Closed -= OnCustomChooser_Closed;
if (chooserWindow != null && chooserWindow.Popup != null)
chooserWindow.Popup.Closed -= OnPopup_Closed;
this.sfGrid.Dispose();
this.sfGrid.ItemsSource = null;
(this.DataContext as IDisposable).Dispose();
this.DataContext = null;
base.Dispose();
}
}
}