/// <summary>
///
/// </summary>
/// <param name="e"></param>
protected virtual void OnFilter(FilterEventArgs e) {
if (this.Filter != null)
this.Filter(this, e);
}
/// <summary>
/// Do the actual work of filtering
/// </summary>
/// <param name="objects"></param>
/// <param name="aModelFilter"></param>
/// <param name="aListFilter"></param>
/// <returns></returns>
protected virtual IEnumerable FilterObjects(IEnumerable objects, IModelFilter aModelFilter, IListFilter aListFilter)
{
// Being cautious
objects = objects ?? new ArrayList();
// Tell the world to filter the objects. If they do so, don't do anything else
FilterEventArgs args = new FilterEventArgs(objects);
this.OnFilter(args);
if (args.FilteredObjects != null)
return args.FilteredObjects;
// Apply a filter to the list as a whole
if (aListFilter != null)
objects = aListFilter.Filter(objects);
// Apply the object filter if there is one
if (aModelFilter != null) {
ArrayList filteredObjects = new ArrayList();
foreach (object model in objects) {
if (aModelFilter.Filter(model))
filteredObjects.Add(model);
}
objects = filteredObjects;
}
return objects;
}
/// <summary>
/// Build our filtered list from our full list.
/// </summary>
protected void FilterObjects()
{
// If this list isn't filtered, we don't need to do anything else
if (!this.listView.UseFiltering) {
this.filteredObjectList = new ArrayList(this.fullObjectList);
return;
}
// Tell the world to filter the objects. If they do so, don't do anything else
// ReSharper disable PossibleMultipleEnumeration
FilterEventArgs args = new FilterEventArgs(this.fullObjectList);
this.listView.OnFilter(args);
if (args.FilteredObjects != null) {
this.filteredObjectList = ObjectListView.EnumerableToArray(args.FilteredObjects, false);
return;
}
IEnumerable objects = (this.listFilter == null) ?
this.fullObjectList : this.listFilter.Filter(this.fullObjectList);
// Apply the object filter if there is one
if (this.modelFilter == null) {
this.filteredObjectList = ObjectListView.EnumerableToArray(objects, false);
} else {
this.filteredObjectList = new ArrayList();
foreach (object model in objects) {
if (this.modelFilter.Filter(model))
this.filteredObjectList.Add(model);
}
}
}