public ListViewDataSource(ListViewRenderer.ListViewDataSource source)
{
this.uiTableViewController = source.uiTableViewController;
this.list = source.list;
this.uiTableView = source.uiTableView;
this.defaultSectionHeight = source.defaultSectionHeight;
this.selectionFromNative = source.selectionFromNative;
this.Counts = new Dictionary <int, int> ();
}
protected override void OnElementPropertyChanged(object sender, PropertyChangedEventArgs e)
{
base.OnElementPropertyChanged(sender, e);
if (e.PropertyName == ListView.RowHeightProperty.PropertyName)
{
this.UpdateRowHeight();
}
else if (e.PropertyName == ListView.IsGroupingEnabledProperty.PropertyName)
{
this.dataSource.UpdateGrouping();
}
else if (e.PropertyName == ListView.HasUnevenRowsProperty.PropertyName)
{
this.estimatedRowHeight = false;
this.dataSource = this.Element.HasUnevenRows ?
new ListViewRenderer.UnevenListViewDataSource(this.dataSource) :
new ListViewRenderer.ListViewDataSource(dataSource);
this.Control.Source = dataSource;
}
else if (e.PropertyName == ListView.IsPullToRefreshEnabledProperty.PropertyName)
{
this.UpdatePullToRefreshEnabled();
}
else if (e.PropertyName == ListView.IsRefreshingProperty.PropertyName)
{
this.UpdateIsRefreshing();
}
else if (e.PropertyName == ListView.SeparatorColorProperty.PropertyName)
{
this.UpdateSeparatorColor();
}
else if (e.PropertyName == ListView.SeparatorVisibilityProperty.PropertyName)
{
this.UpdateSeparatorVisibility();
}
else if (e.PropertyName == "HeaderElement")
{
this.UpdateHeader();
}
else if (e.PropertyName == "FooterElement")
{
this.UpdateFooter();
}
else
{
if (!(e.PropertyName == "RefreshAllowed"))
{
return;
}
this.UpdatePullToRefreshEnabled();
}
}
public UnevenListViewDataSource(ListViewRenderer.ListViewDataSource source)
: base(source)
{
}
protected override void OnElementChanged(ElementChangedEventArgs <ListView> e)
{
ListViewRenderer.ListViewDataSource unevenListViewDataSource;
this.requestedScroll = null;
if (e.OldElement != null)
{
ListView oldElement = e.OldElement;
VisualElement headerElement = (VisualElement)((IListViewController)oldElement).HeaderElement;
if (headerElement != null)
{
headerElement.MeasureInvalidated -= new EventHandler(this.OnHeaderMeasureInvalidated);
}
VisualElement footerElement = (VisualElement)((IListViewController)oldElement).FooterElement;
if (footerElement != null)
{
footerElement.MeasureInvalidated -= new EventHandler(this.OnFooterMeasureInvalidated);
}
// Not for Mac
//e.OldElement.ScrollToRequested -= new EventHandler<ScrollToRequestedEventArgs> (this.OnScrollToRequested);
// TODO: TemplatedItems
//e.OldElement.TemplatedItems.CollectionChanged -= OnCollectionChanged;
//e.OldElement.TemplatedItems.GroupedCollectionChanged -= OnGroupedCollectionChanged;
}
if (e.NewElement != null)
{
if (base.Control == null)
{
tableViewController = new FormsUITableViewController(e.NewElement);
base.SetNativeControl(tableViewController.TableView);
// Not for Mac
/*
* this.insetTracker = new KeyboardInsetTracker (
* this.tableViewController.TableView, () => base.Control.Window,
* (UIEdgeInsets insets) =>
* {
* UITableView control = base.Control;
* UIEdgeInsets uIEdgeInset = insets;
* UIEdgeInsets uIEdgeInset1 = uIEdgeInset;
* base.Control.ScrollIndicatorInsets = uIEdgeInset;
* control.ContentInset = uIEdgeInset1;
* },
* (CGPoint point) =>
* {
* CGPoint contentOffset = base.Control.ContentOffset;
* contentOffset.Y = contentOffset.Y + point.Y;
* base.Control.SetContentOffset (contentOffset, true);
* });
*/
}
this.shouldEstimateRowHeight = true;
if (e.NewElement.TakePerformanceHit)
{
this.shouldEstimateRowHeight = false;
}
e.NewElement.ScrollToRequested += new EventHandler <ScrollToRequestedEventArgs> (this.OnScrollToRequested);
e.NewElement.TemplatedItems.CollectionChanged += new NotifyCollectionChangedEventHandler(this.OnCollectionChanged);
e.NewElement.TemplatedItems.GroupedCollectionChanged += new NotifyCollectionChangedEventHandler(this.OnGroupedCollectionChanged);
this.UpdateRowHeight();
var uITableView = base.Control;
if (e.NewElement.HasUnevenRows)
{
unevenListViewDataSource = new ListViewRenderer.UnevenListViewDataSource(e.NewElement, this.tableViewController);
}
else
{
unevenListViewDataSource = new ListViewRenderer.ListViewDataSource(e.NewElement, this.tableViewController);
}
ListViewRenderer.ListViewDataSource listViewDataSource = unevenListViewDataSource;
this.dataSource = unevenListViewDataSource;
uITableView.Source = listViewDataSource;
//this.UpdateEstimatedRowHeight ();
this.UpdateHeader();
this.UpdateFooter();
this.UpdatePullToRefreshEnabled();
this.UpdateIsRefreshing();
this.UpdateSeparatorColor();
this.UpdateSeparatorVisibility();
object selectedItem = e.NewElement.SelectedItem;
if (selectedItem != null)
{
this.dataSource.OnItemSelected(null, new SelectedItemChangedEventArgs(selectedItem));
}
}
base.OnElementChanged(e);
}