private void DataGridElementView_LoadingRowGroup(object sender, Microsoft.Toolkit.Uwp.UI.Controls.DataGridRowGroupHeaderEventArgs e)
{
ICollectionViewGroup group = e.RowGroupHeader.CollectionViewGroup;
ElementModel item = group.GroupItems[0] as ElementModel;
e.RowGroupHeader.PropertyValue = item.Position.ToString();
}
private void DataGrid_LoadingRowGroup(object sender, DataGridRowGroupHeaderEventArgs e)
{
ICollectionViewGroup group = e.RowGroupHeader.CollectionViewGroup;
DataGridDataItem item = group.GroupItems[0] as DataGridDataItem;
e.RowGroupHeader.PropertyValue = item.Range;
}
private void DataGrid_LoadingRowGroup(object sender, Microsoft.Toolkit.Uwp.UI.Controls.DataGridRowGroupHeaderEventArgs e)
{
ICollectionViewGroup group = e.RowGroupHeader.CollectionViewGroup;
var item = (PaymentViewModel)group.GroupItems[0];
e.RowGroupHeader.PropertyValue = item.Date.ToString("D", CultureInfo.CurrentCulture);
}
private void DataGridMaterialRequirements_LoadingRowGroup(object sender, DataGridRowGroupHeaderEventArgs e)
{
ICollectionViewGroup group = e.RowGroupHeader.CollectionViewGroup;
MaterialRequirementModel item = group.GroupItems[0] as MaterialRequirementModel;
e.RowGroupHeader.PropertyValue = item.MaterialNumber.ToString();
}
private void DataGridPlantOrder_LoadingRowGroup(object sender, DataGridRowGroupHeaderEventArgs e)
{
ICollectionViewGroup group = e.RowGroupHeader.CollectionViewGroup;
PlantOrderModel item = group.GroupItems[0] as PlantOrderModel;
e.RowGroupHeader.PropertyValue = PlantOrderViewModel.GetPlantOrderMainNumber(item.Number);
}
public void ThisWeekDataGrid_LoadingRowGroup(object sender, DataGridRowGroupHeaderEventArgs args)
{
ICollectionViewGroup group = args.RowGroupHeader.CollectionViewGroup;
var item = group.GroupItems[0] as Lesson;
args.RowGroupHeader.PropertyValue = item.DayOfWeek;
args.RowGroupHeader.PropertyNameVisibility = Visibility.Collapsed;
args.RowGroupHeader.ItemCountVisibility = Visibility.Collapsed;
}
/// <summary>
/// Update onscreen group header DataContext when ICollectionViewGroup.Group property changes.
/// </summary>
internal override void OnGroupPropertyChanged(ICollectionViewGroup group, int groupIndex)
{
base.OnGroupPropertyChanged(group, groupIndex);
var groupContainer = ContainerFromGroupIndex(groupIndex);
if (groupContainer != null)
{
groupContainer.DataContext = group.Group;
}
}
public DataGridRowGroupInfo(
ICollectionViewGroup collectionViewGroup,
Visibility visibility,
int level,
int slot,
int lastSubItemSlot)
{
this.CollectionViewGroup = collectionViewGroup;
this.Visibility = visibility;
this.Level = level;
this.Slot = slot;
this.LastSubItemSlot = lastSubItemSlot;
}
/// <summary>
/// Initializes a new instance of the <see cref="DataGridGroupItemAutomationPeer"/> class.
/// </summary>
public DataGridGroupItemAutomationPeer(ICollectionViewGroup group, DataGrid dataGrid)
: base(dataGrid)
{
if (group == null)
{
throw new ArgumentNullException("group");
}
if (dataGrid == null)
{
throw new ArgumentNullException("dataGrid");
}
_group = group;
_dataGridAutomationPeer = FrameworkElementAutomationPeer.CreatePeerForElement(dataGrid);
}
private void CollectionView_CurrentChanged(object sender, object e)
{
if (_expectingCurrentChanged)
{
// Committing Edit could cause our item to move to a group that no longer exists. In
// this case, we need to update the item.
ICollectionViewGroup collectionViewGroup = _itemToSelectOnCurrentChanged as ICollectionViewGroup;
if (collectionViewGroup != null)
{
DataGridRowGroupInfo groupInfo = _owner.RowGroupInfoFromCollectionViewGroup(collectionViewGroup);
if (groupInfo == null)
{
// Move to the next slot if the target slot isn't visible
if (!_owner.IsSlotVisible(_backupSlotForCurrentChanged))
{
_backupSlotForCurrentChanged = _owner.GetNextVisibleSlot(_backupSlotForCurrentChanged);
}
// Move to the next best slot if we've moved past all the slots. This could happen if multiple
// groups were removed.
if (_backupSlotForCurrentChanged >= _owner.SlotCount)
{
_backupSlotForCurrentChanged = _owner.GetPreviousVisibleSlot(_owner.SlotCount);
}
// Update the itemToSelect
int newCurrentPosition = -1;
_itemToSelectOnCurrentChanged = _owner.ItemFromSlot(_backupSlotForCurrentChanged, ref newCurrentPosition);
}
}
_owner.ProcessSelectionAndCurrency(
_columnForCurrentChanged,
_itemToSelectOnCurrentChanged,
_backupSlotForCurrentChanged,
_selectionActionForCurrentChanged,
_scrollForCurrentChanged);
}
else if (this.CollectionView != null)
{
_owner.UpdateStateOnCurrentChanged(this.CollectionView.CurrentItem, this.CollectionView.CurrentPosition);
}
}
internal void PopulateGroupItemPeers()
{
Dictionary <object, DataGridGroupItemAutomationPeer> oldChildren = new Dictionary <object, DataGridGroupItemAutomationPeer>(_groupItemPeers);
_groupItemPeers.Clear();
if (this.OwningDataGrid.DataConnection.CollectionView != null &&
#if FEATURE_ICOLLECTIONVIEW_GROUP
this.OwningDataGrid.DataConnection.CollectionView.CanGroup &&
#endif
this.OwningDataGrid.DataConnection.CollectionView.CollectionGroups != null &&
this.OwningDataGrid.DataConnection.CollectionView.CollectionGroups.Count > 0)
{
List <object> groups = new List <object>(this.OwningDataGrid.DataConnection.CollectionView.CollectionGroups);
while (groups.Count > 0)
{
ICollectionViewGroup cvGroup = groups[0] as ICollectionViewGroup;
groups.RemoveAt(0);
if (cvGroup != null)
{
// Add the group's peer to the collection
DataGridGroupItemAutomationPeer peer = null;
if (oldChildren.ContainsKey(cvGroup))
{
peer = oldChildren[cvGroup] as DataGridGroupItemAutomationPeer;
}
else
{
peer = new DataGridGroupItemAutomationPeer(cvGroup, this.OwningDataGrid);
}
if (peer != null)
{
DataGridRowGroupHeaderAutomationPeer rghPeer = peer.OwningRowGroupHeaderPeer;
if (rghPeer != null)
{
rghPeer.EventsSource = peer;
}
}
// This guards against the addition of duplicate items
if (!_groupItemPeers.ContainsKey(cvGroup))
{
_groupItemPeers.Add(cvGroup, peer);
}
#if FEATURE_ICOLLECTIONVIEW_GROUP
// Look for any sub groups
if (!cvGroup.IsBottomLevel)
{
int position = 0;
foreach (object subGroup in cvGroup.Items)
{
groups.Insert(position, subGroup);
position++;
}
}
#endif
}
}
}
}
protected override UICollectionReusableView GetGroupCell(UICollectionView collectionView, NSIndexPath indexPath, ICollectionViewGroup <object, object> group)
{
var header = collectionView.DequeueReusableSupplementaryView(UICollectionElementKindSection.Header, YouTubeHeaderIdentifier, indexPath) as YouTubeHeaderCell;
header.Title.Text = group.Group.ToString().ToUpper();
header.Title.Font = UIFont.SystemFontOfSize(UIFont.SmallSystemFontSize);
return(header);
}
