This commit is contained in:
Vitaliy
2017-01-09 13:25:52 +03:00
parent a9f4f0f297
commit 6ead62af6e
98 changed files with 12058 additions and 72 deletions

View File

@@ -0,0 +1,115 @@
using System;
using System.Collections;
using System.Collections.Generic;
using System.Linq;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Interactivity;
using System.Windows.Threading;
namespace BrightSharp.Behaviors
{
public class FilterDefaultViewTextBoxBehavior : Behavior<TextBox>
{
DispatcherTimer timer = new DispatcherTimer();
public FilterDefaultViewTextBoxBehavior()
{
timer.Tick += Timer_Tick;
FilterDelay = TimeSpan.FromSeconds(1);
IgnoreCase = null;
}
private void Timer_Tick(object sender, EventArgs e)
{
timer.Stop();
if (ItemsSource != null)
{
var view = CollectionViewSource.GetDefaultView(ItemsSource);
if (view is ListCollectionView)
{
var listCollectionView = (ListCollectionView)view;
if (listCollectionView.IsAddingNew || listCollectionView.IsEditingItem) return;
}
view.Filter = CustomFilter ?? GetDefaultFilter(ItemsSource.GetType().GetGenericArguments()[0]);
}
}
public bool HasFilterText
{
get { return (bool)GetValue(HasFilterTextProperty); }
set { SetValue(HasFilterTextProperty, value); }
}
public static readonly DependencyProperty HasFilterTextProperty =
DependencyProperty.Register("HasFilterText", typeof(bool), typeof(FilterDefaultViewTextBoxBehavior), new PropertyMetadata(false));
public IEnumerable ItemsSource
{
get { return (IEnumerable)GetValue(ItemsSourceProperty); }
set { SetValue(ItemsSourceProperty, value); }
}
// Using a DependencyProperty as the backing store for ItemsSource. This enables animation, styling, binding, etc...
public static readonly DependencyProperty ItemsSourceProperty =
DependencyProperty.Register("ItemsSource", typeof(IEnumerable), typeof(FilterDefaultViewTextBoxBehavior), new PropertyMetadata(null));
public bool? IgnoreCase { get; set; }
private Predicate<object> GetDefaultFilter(Type filterItemType)
{
Func<object, string> dataFunc;
var pInfo = filterItemType.GetProperty("FilterString");
if (pInfo == null)
{
dataFunc = (x) => string.Join(",", filterItemType.GetProperties().Where(p => !p.Name.EndsWith("Id")).Select(p => (p.GetValue(x, null) ?? string.Empty).ToString()));
}
else
{
dataFunc = (x) => (pInfo.GetValue(x, null) ?? string.Empty).ToString();
}
var filterText = AssociatedObject.Text;
var ic = IgnoreCase ?? !filterText.Any(char.IsUpper);
return x =>
{
if (x == null || string.IsNullOrEmpty(filterText)) return true;
var propValStr = dataFunc(x);
foreach (var item in filterText.Split(';'))
{
if (propValStr.IndexOf(item, ic ? StringComparison.OrdinalIgnoreCase : StringComparison.Ordinal) == -1)
return false;
}
return true;
};
}
public Predicate<object> CustomFilter { get; set; }
public TimeSpan FilterDelay { get { return timer.Interval; } set { timer.Interval = value; } }
protected override void OnAttached()
{
base.OnAttached();
HasFilterText = !string.IsNullOrEmpty(AssociatedObject.Text);
AssociatedObject.TextChanged += AssociatedObject_TextChanged;
}
private void AssociatedObject_TextChanged(object sender, TextChangedEventArgs e)
{
timer.Stop(); timer.Start();
HasFilterText = !string.IsNullOrEmpty(AssociatedObject.Text);
}
protected override void OnDetaching()
{
AssociatedObject.TextChanged -= AssociatedObject_TextChanged;
timer.Tick -= Timer_Tick;
base.OnDetaching();
}
}
}