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Diffstat (limited to 'Xamarin.Forms.Platform.MacOS/Renderers/TableViewDataSource.cs')
-rw-r--r--Xamarin.Forms.Platform.MacOS/Renderers/TableViewDataSource.cs131
1 files changed, 131 insertions, 0 deletions
diff --git a/Xamarin.Forms.Platform.MacOS/Renderers/TableViewDataSource.cs b/Xamarin.Forms.Platform.MacOS/Renderers/TableViewDataSource.cs
new file mode 100644
index 0000000..90335ee
--- /dev/null
+++ b/Xamarin.Forms.Platform.MacOS/Renderers/TableViewDataSource.cs
@@ -0,0 +1,131 @@
+´╗┐using System;
+using AppKit;
+using Foundation;
+
+namespace Xamarin.Forms.Platform.MacOS
+{
+ internal class TableViewDataSource : NSTableViewSource
+ {
+ static int s_sectionCount;
+
+ const string HeaderIdentifier = nameof(TextCell);
+ const string ItemIdentifier = nameof(ViewCell);
+
+ protected ITableViewController Controller => _tableView;
+
+ readonly NSTableView _nsTableView;
+ readonly TableView _tableView;
+
+ public TableViewDataSource(TableViewRenderer tableViewRenderer)
+ {
+ _tableView = tableViewRenderer.Element;
+ _nsTableView = tableViewRenderer.TableView;
+ Controller.ModelChanged += (s, e) => { _nsTableView?.ReloadData(); };
+ AutomaticallyDeselect = true;
+ }
+
+ public bool AutomaticallyDeselect { get; set; }
+
+ public override void SelectionDidChange(NSNotification notification)
+ {
+ var row = _nsTableView.SelectedRow;
+ if (row == -1)
+ return;
+
+ int sectionIndex;
+ bool isHeader;
+ int itemIndexInSection;
+
+ GetComputedIndexes(row, out sectionIndex, out itemIndexInSection, out isHeader);
+
+ var cell = Controller.Model.GetCell(sectionIndex, itemIndexInSection);
+ Controller.Model.RowSelected(cell);
+ if (AutomaticallyDeselect)
+ _nsTableView.DeselectRow(row);
+ }
+
+ public override nint GetRowCount(NSTableView tableView)
+ {
+ nint count = 0;
+ s_sectionCount = Controller.Model.GetSectionCount();
+ for (int i = 0; i < s_sectionCount; i++)
+ {
+ count += Controller.Model.GetRowCount(i) + 1;
+ }
+
+ return count;
+ }
+
+ public override bool ShouldSelectRow(NSTableView tableView, nint row)
+ {
+ int sectionIndex;
+ bool isHeader;
+ int itemIndexInSection;
+
+ GetComputedIndexes(row, out sectionIndex, out itemIndexInSection, out isHeader);
+
+ return !isHeader;
+ }
+
+ public override NSView GetViewForItem(NSTableView tableView, NSTableColumn tableColumn, nint row)
+ {
+ int sectionIndex;
+ bool isHeader;
+ int itemIndexInSection;
+
+ GetComputedIndexes(row, out sectionIndex, out itemIndexInSection, out isHeader);
+
+ string id;
+ Cell cell;
+ if (isHeader)
+ {
+ id = HeaderIdentifier;
+ cell = Controller.Model.GetHeaderCell(sectionIndex) ??
+ new TextCell { Text = Controller.Model.GetSectionTitle(sectionIndex) };
+ }
+ else
+ {
+ id = ItemIdentifier;
+ cell = Controller.Model.GetCell(sectionIndex, itemIndexInSection);
+ }
+
+ var nativeCell = CellNSView.GetNativeCell(tableView, cell, id, isHeader);
+ return nativeCell;
+ }
+
+ void GetComputedIndexes(nint row, out int sectionIndex, out int itemIndexInSection, out bool isHeader)
+ {
+ var totalItems = 0;
+ isHeader = false;
+ sectionIndex = 0;
+ itemIndexInSection = 0;
+
+ for (int i = 0; i < s_sectionCount; i++)
+ {
+ var groupCount = Controller.Model.GetRowCount(i);
+ var itemsInSection = groupCount + 1;
+
+ if (row < totalItems + itemsInSection)
+ {
+ sectionIndex = i;
+ itemIndexInSection = (int)row - totalItems;
+ isHeader = itemIndexInSection == 0;
+ if (isHeader)
+ itemIndexInSection = -1;
+ else
+ itemIndexInSection = itemIndexInSection - 1;
+ break;
+ }
+ totalItems += itemsInSection;
+ }
+ }
+ }
+
+ //TODO: Implement Uneven rows
+ internal class UnEvenTableViewModelRenderer : TableViewDataSource
+ {
+ public UnEvenTableViewModelRenderer(TableViewRenderer model) : base(model)
+ {
+ }
+ }
+} \ No newline at end of file