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using System;
using System.Windows;
using System.Windows.Controls;
using Tango.Core.Commands;
//using System.Collections;
using System.Linq;
using System.Collections;
namespace Tango.SharedUI.Controls
{
public class AllSelectedCheckboxList : ListBox
{
#region Properties
private ItemsControl _itemsControl;
public ItemsControl ItemsControl
{
get { return _itemsControl; }
set { _itemsControl = value; }
}
public bool? AllSelected
{
get { return (bool?)GetValue(AllSelectedProperty); }
set
{
SetValue(AllSelectedProperty, value);
}
}
public static readonly DependencyProperty AllSelectedProperty =
DependencyProperty.Register("AllSelected", typeof(bool?), typeof(AllSelectedCheckboxList), new FrameworkPropertyMetadata(false, FrameworkPropertyMetadataOptions.BindsTwoWayByDefault, new PropertyChangedCallback(OnAllSelectedChanged)));
private static void OnAllSelectedChanged(DependencyObject o, DependencyPropertyChangedEventArgs e)
{
AllSelectedCheckboxList l = o as AllSelectedCheckboxList;
var nv = e.NewValue;
l.AllSelectedChanged((bool?)nv);
}
public static DependencyProperty ClickCheckBoxCommandProperty = DependencyProperty.Register("ClickCheckBoxCommand", typeof(RelayCommand<object>), typeof(AllSelectedCheckboxList));
public RelayCommand<object> ClickCheckBoxCommand
{
get { return (RelayCommand<object>)GetValue(ClickCheckBoxCommandProperty); }
private set { SetValue(ClickCheckBoxCommandProperty, value); }
}
#endregion
#region "Constructors"
static AllSelectedCheckboxList()
{
DefaultStyleKeyProperty.OverrideMetadata(typeof(AllSelectedCheckboxList), new FrameworkPropertyMetadata(typeof(AllSelectedCheckboxList)));
}
public AllSelectedCheckboxList() : base()
{
ClickCheckBoxCommand = new RelayCommand<object>(ClickCheckBox);
}
/// <summary>
/// Clicks the CheckBox.Update Selection ListBoxitem.
/// </summary>
/// <param name="obj">The object.</param>
private void ClickCheckBox(object obj)
{
if (obj is ListBoxItem)
{
ListBoxItem lbItem = obj as ListBoxItem;
CheckBox checkBox = lbItem.FindVisualChildren<CheckBox>().FirstOrDefault();
if (checkBox != null)
{
bool? check = checkBox.IsChecked;
if (check != null)
{
lbItem.IsSelected = (bool)check;
}
}
}
if (SelectedItems.Count == 0)
{
AllSelected = false;
}
else if (Items.Count > 0 && SelectedItems.Count == Items.Count)
{
AllSelected = true;
}
else
{
AllSelected = null;
}
}
#endregion
#region Override
/// <summary>
/// When overridden in a derived class, is invoked whenever application code or internal processes call <see cref="M:System.Windows.FrameworkElement.ApplyTemplate" />.
/// </summary>
public override void OnApplyTemplate()
{
base.OnApplyTemplate();
AllSelectedChanged(AllSelected);
}
protected override void OnSelectionChanged(SelectionChangedEventArgs e)
{
base.OnSelectionChanged(e);
foreach(var addItem in e.AddedItems.OfType<Components.SelectedObject>())
{
addItem.IsSelected = true;
}
foreach (var removeItem in e.RemovedItems.OfType<Components.SelectedObject>())
{
removeItem.IsSelected = false;
}
}
#endregion
private void AllSelectedChanged(bool? value)
{
if (value == null)
return;
SelectionMode = SelectionMode.Multiple;
if (value == true)
{
SelectAll();
}
else
{
UnselectAll();
}
}
}
}
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