public void SetFilterState(GridViewColumnHeader header, IComparable value, bool isChecked)
{
GridViewColumnWithFilterAndSorter column = GetColumnFilters(header);
bool found = false;
foreach (var filterItem in column.FilterItems)
{
if (filterItem.Item.Equals(value))
{
found = true;
filterItem.IsChecked = isChecked;
break;;
}
}
//if (found==false)
//{
// ReBuildFiltersList(column.SortPropertyName, column.FilterItems);
// foreach (var filterItem in column.FilterItems)
// {
// if (filterItem.Item.Equals(value))
// {
// found = true;
// filterItem.IsChecked = isChecked;
// break; ;
// }
// }
//}
FilterColumn(header);
}
private void FilterColumn(GridViewColumnHeader header)
{
GridViewColumnWithFilterAndSorter column = (GridViewColumnWithFilterAndSorter)header.Column;
String currentFilterProperty = column.SortPropertyName;
bool hasFilter = false;
if (column.FilterItems == null)
{
if (currentFilters.ContainsKey(currentFilterProperty))
{
currentFilters.Remove(currentFilterProperty);
}
}
else
{
foreach (var filterItem in column.FilterItems)
{
if (filterItem.IsChecked)
{
if (!currentFilters.ContainsKey(currentFilterProperty))
{
currentFilters[currentFilterProperty] = new List <object>();
}
currentFilters[currentFilterProperty].Add(filterItem.ItemView);
hasFilter = true;
}
else
{
if (currentFilters.ContainsKey(currentFilterProperty))
{
currentFilters[currentFilterProperty].Remove(filterItem.ItemView);
}
}
}
}
// find the button and apply the active style
Button button = (Button)BaseWPFHelpers.FindVisualElement(header, "filterButton");
if (hasFilter)
{
button.ContentTemplate = (DataTemplate)dictionary["filterButtonActiveTemplate"];
if (FilterButtonActiveStyle != null)
{
button.Style = FilterButtonActiveStyle;
}
}
else
{
currentFilters.Remove(currentFilterProperty);
button.ContentTemplate = (DataTemplate)dictionary["filterButtonInactiveTemplate"];
if (FilterButtonActiveStyle != null)
{
button.Style = FilterButtonActiveStyle;
}
}
ApplyCurrentFilters();
}
private void RefreshItemsCommand(object sender, ExecutedRoutedEventArgs e)
{
GridViewColumnHeader header = (GridViewColumnHeader)BaseWPFHelpers.FindElementOfTypeUp((MenuItem)e.OriginalSource, typeof(GridViewColumnHeader));
Popup popup = (Popup)BaseWPFHelpers.FindElementOfType(header, typeof(Popup));
GridViewColumnWithFilterAndSorter column = (GridViewColumnWithFilterAndSorter)header.Column;
ReBuildFiltersList(column.SortPropertyName, (ObservableCollection <FilterItem>)popup.DataContext);
//popup.IsOpen = false;
}
private void RemoveFiltersCommand(object sender, ExecutedRoutedEventArgs e)
{
GridViewColumnHeader header = (GridViewColumnHeader)BaseWPFHelpers.FindElementOfTypeUp((MenuItem)e.OriginalSource, typeof(GridViewColumnHeader));
GridViewColumnWithFilterAndSorter column = (GridViewColumnWithFilterAndSorter)header.Column;
Popup popup = (Popup)BaseWPFHelpers.FindElementOfType(header, typeof(Popup));
//foreach (var filterItem in column.FilterItems)
//{
// filterItem.IsChecked = false;
//}
column.FilterItems = null;
popup.IsOpen = false;
}
private GridViewColumnWithFilterAndSorter GetColumnFilters(GridViewColumnHeader header)
{
GridViewColumnWithFilterAndSorter column = (GridViewColumnWithFilterAndSorter)header.Column;
String propertyName = column.SortPropertyName;
// clear the previous filter
if (column.FilterItems == null)
{
column.FilterItems = new ObservableCollection <FilterItem>();
ReBuildFiltersList(propertyName, column.FilterItems);
}
CollectionViewSource.GetDefaultView(column.FilterItems).Refresh();
return(column);
}
/// <summary>
/// Handles the ShowFilter command to populate the filter list and display the popup
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void ShowFilterCommand(object sender, ExecutedRoutedEventArgs e)
{
Button button = e.OriginalSource as Button;
if (button != null)
{
// navigate up to the header
GridViewColumnHeader header = (GridViewColumnHeader)BaseWPFHelpers.FindElementOfTypeUp(button, typeof(GridViewColumnHeader));
// then down to the popup
Popup popup = (Popup)BaseWPFHelpers.FindElementOfType(header, typeof(Popup));
if (popup != null)
{
// find the property name that we are filtering
GridViewColumnWithFilterAndSorter column = GetColumnFilters(header);
// open the popup to display this list
popup.Closed += new EventHandler(popup_Closed);
popup.DataContext = column.FilterItems;
popup.IsOpen = true;
}
}
}
