Esempio n. 1
0
 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> ();
 }
Esempio n. 2
0
 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();
     }
 }
Esempio n. 3
0
 public UnevenListViewDataSource(ListViewRenderer.ListViewDataSource source)
     : base(source)
 {
 }
Esempio n. 4
0
        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);
        }