private void OnDropInfo(object sender, DragDropEventArgs e)
{
if (!(e.Options.Source is GridViewRow))
{
return;
}
var gridView = e.Options.Destination as RadGridView;
IEnumerable <object> draggedItems = e.Options.Payload as IEnumerable <object>;
TreeViewDragCue cue = e.Options.DragCue as TreeViewDragCue;
this.HideDropPositionFeedbackPresenter();
if (e.Options.Status == DragStatus.DropPossible)
{
this.UpdateDragCueContent(cue, gridView.Items[gridView.Items.Count - 1], "Move after: ");
cue.IsDropPossible = true;
}
else if (e.Options.Status == DragStatus.DropImpossible)
{
cue.DragActionContent = null;
cue.IsDropPossible = false;
}
else if (e.Options.Status == DragStatus.DropComplete)
{
ReorderingEventArgs reorderingArgs = new ReorderingEventArgs(gridView, draggedItems, gridView.Items.Count);
this.OnReordering(reorderingArgs);
this.TryReorderRows(reorderingArgs);
this.OnReordered(new ReorderedEventArgs(gridView, draggedItems));
}
e.Handled = true;
}
private void ClearDragCueContent(TreeViewDragCue cue)
{
cue.DragTooltipContentTemplate = null;
cue.DragActionContentTemplate = null;
cue.DragTooltipContent = null;
cue.DragActionContent = null;
}
private void OnDragInfo(object sender, DragDropEventArgs e)
{
if (!(e.Options.Source is GridViewRow))
{
return;
}
var gridView = sender as RadGridView;
var draggedItems = e.Options.Payload as IEnumerable <object>;
this.AssociatedObject.ReleaseMouseCapture();
if (e.Options.Status == DragStatus.DragInProgress)
{
this.dragCue = this.CreateDragCue();
this.dragCue.ItemsSource = draggedItems;
e.Options.DragCue = this.dragCue;
}
else if (e.Options.Status == DragStatus.DragCancel)
{
//treeView.CancelDrag();
}
else if (e.Options.Status == DragStatus.DragComplete)
{
}
else if (e.Options.Status == DragStatus.DropImpossible)
{
// HIDE DROP INDICATOR
}
e.Handled = true;
}
private void UpdateDragCueContent(TreeViewDragCue cue, object tooltipContent, object actionContent)
{
cue.Style = this.DragCueStyle;
cue.DragTooltipContentTemplate = this.DragCueTooltipContentTemplate;
cue.DragActionContentTemplate = this.DragCueActionContentTemplate;
cue.ItemTemplate = this.DragCueItemTemplate;
cue.DragTooltipContent = tooltipContent;
cue.DragActionContent = actionContent;
}
private TreeViewDragCue CreateDragCue()
{
var cue = new TreeViewDragCue();
cue.Style = this.DragCueStyle;
cue.DragTooltipContentTemplate = this.DragCueTooltipContentTemplate;
cue.DragActionContentTemplate = this.DragCueActionContentTemplate;
cue.ItemTemplate = this.DragCueItemTemplate;
return(cue);
}
private void OnDragInfo(object sender, DragDropEventArgs e)
{
if (e.Options.Status == DragStatus.DragInProgress)
{
var draggedItem = e.Options.Payload as IDraggable;
var cue = new TreeViewDragCue();
cue.ItemTemplate = ItemTemplate;
var itemsSource = new List <IDraggable>();
itemsSource.Add(draggedItem);
cue.ItemsSource = itemsSource;
e.Options.DragCue = cue;
}
}
/// <summary>
/// Create the Drag Cue for the Drag operation received as dependency property
/// </summary>
/// <returns>TreeViewDragCue object</returns>
private TreeViewDragCue CreateDragCue()
{
var cue = new TreeViewDragCue();
cue.Style = this.DragCueStyle;
cue.FontFamily = new FontFamily("Arial");
cue.Foreground = new SolidColorBrush(Colors.White);
cue.Background = new SolidColorBrush(Color.FromArgb(255, 159, 29, 33));
cue.FontSize = 7;
cue.DragTooltipContentTemplate = this.DragCueTooltipContentTemplate;
cue.DragActionContentTemplate = this.DragCueActionContentTemplate;
cue.ItemTemplate = this.DragCueItemTemplate;
return(cue);
}
/// <summary>
/// On DropInfo
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void OnDropInfo(object sender, DragDropEventArgs e)
{
//Limit Drop Behavior to GridViewRow
if (!(e.Options.Source is GridViewRow))
{
return;
}
var gridView = e.Options.Destination as RadGridView;
IEnumerable <object> draggedItems = e.Options.Payload as IEnumerable <object>;
TreeViewDragCue cue = e.Options.DragCue as TreeViewDragCue;
this.HideDropPositionFeedbackPresenter();
if (e.Options.Status == DragStatus.DropPossible)
{
if (gridView != null)
{
//if ((gridView.Items[gridView.Items.Count - 1] as MarketSnapshotPerformanceData).MarketSnapshotPreferenceInfo.EntityName == null)
//{
// ContentControl destinationCue = new ContentControl();
// destinationCue.Content = "No Content in Group";
// e.Options.DestinationCue = destinationCue;
//}
this.UpdateDragCueContent(cue, gridView.Items[gridView.Items.Count - 1], "Move after: ");
cue.IsDropPossible = true;
}
else
{
cue.IsDropPossible = false;
}
}
else if (e.Options.Status == DragStatus.DropImpossible)
{
cue.DragActionContent = null;
cue.IsDropPossible = false;
}
else if (e.Options.Status == DragStatus.DropComplete)
{
ReorderingEventArgs reorderingArgs = new ReorderingEventArgs(gridView, draggedItems, gridView.Items.Count);
this.OnReordering(reorderingArgs);
this.TryReorderRows(reorderingArgs);
this.OnReordered(new ReorderedEventArgs(gridView, draggedItems));
}
e.Handled = true;
}
private void OnGridViewRowDropQuery(object sender, DragDropQueryEventArgs e)
{
this.AssociatedObject.ReleaseMouseCapture();
var row = sender as GridViewRow;
var draggedItems = e.Options.Payload as IEnumerable <object>;
TreeViewDragCue cue = e.Options.DragCue as TreeViewDragCue;
if (e.Options.Status == DragStatus.DropDestinationQuery)
{
this.currentDropItem = row.Item;
this.currentDropPosition = this.GetDropPositionFromPoint(e.Options.CurrentDragPoint, row);
e.QueryResult = !draggedItems.Contains(this.currentDropItem);
if (!e.QueryResult.Value)
{
this.ClearDragCueContent(cue);
}
}
e.Handled = true;
}
private void OnGridViewRowDropInfo(object sender, DragDropEventArgs e)
{
this.AssociatedObject.ReleaseMouseCapture();
var senderRow = (GridViewRow)sender;
var gridView = senderRow.GridViewDataControl;
IEnumerable <object> draggedItems = e.Options.Payload as IEnumerable <object>;
TreeViewDragCue cue = e.Options.DragCue as TreeViewDragCue;
if (e.Options.Status == DragStatus.DropPossible)
{
var currentRow = this.AssociatedObject.GetContainerFromDataItem((this.currentDropItem)) as GridViewRow;
//if(currentRow == null)
// cancel drag
this.UpdateDragCueContent(cue,
currentDropItem,
String.Format("Move {0}: ", Enum.GetName(typeof(DropPosition), this.currentDropPosition)).ToLower(CultureInfo.InvariantCulture));
this.ShowDropPositionFeedbackPresenter(gridView, currentRow, this.currentDropPosition);
cue.IsDropPossible = true;
}
else if (e.Options.Status == DragStatus.DropImpossible)
{
this.HideDropPositionFeedbackPresenter();
this.ClearDragCueContent(cue);
cue.IsDropPossible = false;
}
else if (e.Options.Status == DragStatus.DropComplete)
{
this.HideDropPositionFeedbackPresenter();
var dropIndex = gridView.Items.IndexOf(this.currentDropItem);
if (currentDropPosition == DropPosition.After)
{
dropIndex++;
}
ReorderingEventArgs reorderingArgs = new ReorderingEventArgs(gridView, draggedItems, dropIndex);
this.OnReordering(reorderingArgs);
this.TryReorderRows(reorderingArgs);
this.OnReordered(new ReorderedEventArgs(gridView, draggedItems));
}
e.Handled = true;
}
/// <summary>
/// 处理拖拽的拖动操作
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void UserInRoles_OnDragInfo(object sender, DragDropEventArgs e)
{
RadGridView gridView = sender as RadGridView;
IEnumerable draggedItems = e.Options.Payload as IEnumerable;
if (e.Options.Status == DragStatus.DragInProgress)
{
TreeViewDragCue cue = new TreeViewDragCue();
// 设置拖放窗口显示内容的模板。
cue.ItemTemplate = ServiceLocator.Current.GetInstance<UniCloud.UniAuth.Views.UserRoleAllotView>().Resources["UserInRolesTemplate"] as DataTemplate;
cue.Background = new SolidColorBrush(Colors.Transparent);
cue.ItemsSource = draggedItems;
e.Options.DragCue = cue;
}
}
/// <summary>
/// Sets the preview and tool tip visability as well as whether a drop is actually possible based on error codes.
/// </summary>
/// <param name="cue">The cue.</param>
/// <param name="previewVisibility">The preview visibility.</param>
/// <param name="toolTipVisibility">The tool tip visibility.</param>
/// <param name="dropPossible">Bool value that tells us if the drop is possible </param>
/// <returns></returns>
public static TreeViewDragCue SetPreviewAndToolTipVisabilityAndDropPossible(TreeViewDragCue cue, Visibility previewVisibility, Visibility toolTipVisibility, bool dropPossible)
{
cue.DragPreviewVisibility = previewVisibility;
cue.DragTooltipVisibility = toolTipVisibility;
cue.IsDropPossible = dropPossible;
return cue;
}
/// <summary>
/// Creates the drag cue when an error message needs to be displayed.
/// </summary>
/// <param name="cue">The cue.</param>
/// <param name="errorString">The error string.</param>
/// <param name="dataTemplate">The data template.</param>
/// <returns></returns>
public static TreeViewDragCue CreateErrorDragCue(TreeViewDragCue cue, string errorString, DataTemplate dataTemplate)
{
cue = SetPreviewAndToolTipVisabilityAndDropPossible(cue, Visibility.Collapsed, Visibility.Visible, false);
cue.DragTooltipContentTemplate = dataTemplate;
cue.DragActionContent = String.Format(errorString);
return cue;
}