private void AddFilter(String property, FilterValue value, Button button)
{
if (currentFilters.ContainsKey(property))
{
currentFilters.Remove(property);
}
currentFilters.Add(property, new FilterStruct(property, button, new FilterItem[] { new FilterItem(value) }));
}
public int CompareTo(object obj)
{
FilterValue value = obj as FilterValue;
return(this.MinValue.CompareTo(value.MinValue));
}
private void AddFilter(String property, FilterValue value, Button button)
{
if (currentFilters.ContainsKey(property))
{
currentFilters.Remove(property);
}
currentFilters.Add(property, new FilterStruct(property, button, new FilterItem[] { new FilterItem(value) }));
}
/// <summary>
/// Handles the button click on the ok button for filtered
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void btnFixedOk_Click(object sender, RoutedEventArgs e)
{
Button btnOk = (Button)sender;
ListView filterListView = (ListView)btnOk.Tag;
// navigate up to the header to obtain the filter property name
GridViewColumnHeader header = (GridViewColumnHeader)UIHelpers.FindElementOfTypeUp(filterListView, typeof(GridViewColumnHeader));
SortableGridViewColumn column = (SortableGridViewColumn)header.Column;
String currentFilterProperty = column.SortPropertyName;
object selectedValue = null;
foreach (object o in filterListView.Items)
{
var item = (FilterItem)o;
if (item.IsChecked)
{
selectedValue = o;
}
}
if (selectedValue is FilterItem)
{
FilterValue value = (FilterValue)(selectedValue as FilterItem).Item;
if (value.Text == "All")
{
if (currentFilters.ContainsKey(currentFilterProperty))
{
FilterStruct filter = (FilterStruct)currentFilters[currentFilterProperty];
filter.button.ContentTemplate = (DataTemplate)dictionary["filterButtonInactiveTemplate"];
if (FilterButtonInactiveStyle != null)
{
filter.button.Style = FilterButtonInactiveStyle;
}
currentFilters.Remove(currentFilterProperty);
}
ApplyCurrentFilters();
}
else
{
// find the button and apply the active style
Button button = (Button)UIHelpers.FindVisualElement(header, "filterButton");
button.ContentTemplate = (DataTemplate)dictionary["filterButtonActiveTemplate"];
if (FilterButtonActiveStyle != null)
{
button.Style = FilterButtonActiveStyle;
}
AddFilter(currentFilterProperty, value, button);
//AddFilters(currentFilterProperty, items.ToArray(), button);
ApplyCurrentFilters();
}
// navigate up to the popup and close it
Popup popup = (Popup)UIHelpers.FindElementOfTypeUp(filterListView, typeof(Popup));
popup.IsOpen = false;
}
}
/// <summary>
/// Applies the current filter to the list which is being viewed
/// </summary>
private void ApplyCurrentFilters()
{
if (currentFilters.Count == 0)
{
Items.Filter = null;
return;
}
// construct a filter and apply it
Items.Filter = delegate(object item)
{
// when applying the filter to each item, iterate over all of
// the current filters
bool match = true;
foreach (FilterStruct filter in currentFilters.Values)
{
// obtain the value for this property on the item under test
//PropertyDescriptor filterPropDesc = TypeDescriptor.GetProperties(typeof(object))[filter.property];
object itemValue = getPropertyValue(item, filter.property);// filterPropDesc.GetValue((object)item);
if (itemValue != null)
{
Boolean isFilterMatch = false;
// check to see if it meets our filter criteria
foreach (FilterItem value in filter.values)
{
if (value.Item is FilterValue)
{
FilterValue fValue = value.Item as FilterValue;
double num;
if (double.TryParse(itemValue.ToString(), out num))
{
if (num >= fValue.MinValue && num <= fValue.MaxValue)
{
isFilterMatch = true;
}
}
}
else
{
if (itemValue.Equals(value.Item))
{
isFilterMatch = true;
}
}
}
if (!isFilterMatch)
{
match = false;
}
}
else
{
if (filter.values.ToList().Exists(v => v.Item != null))
{
match = false;
}
}
}
return(match);
};
}
