private void UnsubscribeFromDragDropEvents()
{
RadDragAndDropManager.RemoveDropQueryHandler(this.AssociatedObject, OnDropQuery);
RadDragAndDropManager.RemoveDropInfoHandler(this.AssociatedObject, OnDropInfo);
RadDragAndDropManager.RemoveDragQueryHandler(this.AssociatedObject, OnDragQuery);
RadDragAndDropManager.RemoveDragInfoHandler(this.AssociatedObject, OnDragInfo);
}
/// <summary>
/// When overridden in a derived class, is invoked whenever application code or internal processes (such as a rebuilding layout pass) call <see cref="M:System.Windows.Controls.Control.ApplyTemplate"/>. In simplest terms, this means the method is called just before a UI element displays in an application. For more information, see Remarks.
/// </summary>
public override void OnApplyTemplate()
{
base.OnApplyTemplate();
_resultsGrid = GetTemplateChild("PART_ResultsGrid") as RadGridView;
_popup = GetTemplateChild("PART_Popup") as Popup;
_searchTextBox = GetTemplateChild("PART_SearchTextBox") as TextBox;
_popupTarget = GetTemplateChild("PART_PopupTarget") as Grid;
_dropDownButton = GetTemplateChild("Part_DropDown") as RadToggleButton;
_resultsGrid.SelectionChanged += ResultsGridSelectionChanged;
_searchTextBox.GotFocus += SearchTextBox_GotFocus;
_searchTextBox.LostFocus += SearchTextBox_LostFocus;
_searchTextBox.KeyDown += SearchTextBox_KeyDown;
_popup.Opened += Popup_Opened;
RadDragAndDropManager.AddDragQueryHandler(_resultsGrid, OnDragQuery);
UpdatePopupAlignment();
UpdateRowStyle();
if (!string.IsNullOrEmpty(QuickSearchText))
{
VisualStateManager.GoToState(this, "WatermarkInvisible", true);
}
VisualStateManager.GoToState(this, "KeywordSearch", true);
BindingValidationError += (s, e) => UpdateValidationState();
UpdateValidationState();
}
private void OnDragQuery(object sender, DragDropQueryEventArgs e)
{
if (e.Options.Status == DragStatus.DragQuery)
{
e.QueryResult = true;
e.Handled = true;
var sourceControl = e.Options.Source;
var dragCue = RadDragAndDropManager.GenerateVisualCue(sourceControl);
dragCue.HorizontalAlignment = HorizontalAlignment.Left;
dragCue.Content = sourceControl.DataContext;
dragCue.ContentTemplate = App.Current.Resources["TrackDragCueTemplate"] as DataTemplate;
dragCue.HorizontalContentAlignment = System.Windows.HorizontalAlignment.Stretch;
e.Options.DragCue = dragCue;
e.Options.Payload = new DragDropOperation()
{
Payload = sourceControl.DataContext
};
}
if (e.Options.Status == DragStatus.DropSourceQuery)
{
e.QueryResult = true;
e.Handled = true;
}
}
private void AssociatedObject_RowLoaded(object sender, RowLoadedEventArgs e)
{
if (AllowDrag)
{
RadDragAndDropManager.SetAllowDrag(e.Row, true);
}
}
private void SubscribeToDragDropEvents()
{
RadDragAndDropManager.AddDropQueryHandler(this.AssociatedObject, OnDropQuery);
RadDragAndDropManager.AddDropInfoHandler(this.AssociatedObject, OnDropInfo);
RadDragAndDropManager.AddDragQueryHandler(this.AssociatedObject, OnDragQuery);
RadDragAndDropManager.AddDragInfoHandler(this.AssociatedObject, OnDragInfo);
}
/// <summary>
/// Called after the behavior is attached to an AssociatedObject.
/// </summary>
protected override void OnAttached()
{
base.OnAttached();
RadDragAndDropManager.SetAllowDrag(AssociatedObject, false);
AssociatedObject.RowLoaded += AssociatedObject_RowLoaded;
}
/// <summary>
/// Initializes a new instance of the <see cref="AppointmentItemsControl"/> class.
/// </summary>
public AppointmentItemsControl()
{
this.ResizeManager = new AppointmentResizeManager(this);
this.SelectedAppointments = new SelectedAppointmentCollection();
RadDragAndDropManager.AddDragQueryHandler(this, this.OnAppointmentItemsControlDragQuery);
}
private void InitializeRowDragAndDrop(GridViewRow row)
{
if (row == null)
return;
row.SetValue(RadDragAndDropManager.AllowDragProperty, true);
row.SetValue(RadDragAndDropManager.AllowDropProperty, true);
RadDragAndDropManager.RemoveDropQueryHandler(row, OnGridViewRowDropQuery);
RadDragAndDropManager.AddDropQueryHandler(row, OnGridViewRowDropQuery);
}
private void AssociatedObject_RowLoaded(object sender, RowLoadedEventArgs e)
{
if (AllowDrop)
{
RadDragAndDropManager.SetAllowDrop(e.Row, true);
RadDragAndDropManager.AddDropQueryHandler(e.Row, OnDropQuery);
RadDragAndDropManager.AddDropInfoHandler(e.Row, OnDropInfo);
}
}
public DragAndDropListBox()
{
this.AddHandler(RadDragAndDropManager.DragQueryEvent, new EventHandler <DragDropQueryEventArgs>(OnDragQuery));
this.AddHandler(RadDragAndDropManager.DropQueryEvent, new EventHandler <DragDropQueryEventArgs>(OnDropQuery));
this.AddHandler(RadDragAndDropManager.DropInfoEvent, new EventHandler <DragDropEventArgs>(OnDropInfo));
this.AddHandler(RadDragAndDropManager.DragInfoEvent, new EventHandler <DragDropEventArgs>(OnDragInfo));
RadDragAndDropManager.SetAllowDrop(this, true);
}
/// <summary>
/// Called after the behavior is attached to an AssociatedObject.
/// </summary>
protected override void OnAttached()
{
if (AllowDrop)
{
RadDragAndDropManager.SetAllowDrop(AssociatedObject, true);
RadDragAndDropManager.AddDropQueryHandler(AssociatedObject, OnDropQuery);
RadDragAndDropManager.AddDropInfoHandler(AssociatedObject, OnDropInfo);
}
}
/// <summary>
/// Called when [drag info].
/// </summary>
/// <param name="sender">The sender.</param>
/// <param name="e">The <see cref="Telerik.Windows.Controls.DragDrop.DragDropEventArgs"/> instance containing the event data.</param>
protected virtual void OnDragInfo(object sender, DragDropEventArgs e)
{
e.Handled = true;
if (e.Options.Status == DragStatus.DragInProgress)
{
var cue = RadDragAndDropManager.GenerateVisualCue();
cue.Content = e.Options.Payload;
if (DragContentTemplate != null)
{
cue.ContentTemplate = DragContentTemplate;
}
e.Options.DragCue = cue;
}
}
// OnDragQuery event handler
private void OnDragQuery(object sender, DragDropQueryEventArgs e)
{
if (e.Options.Status == DragStatus.DragQuery && Keyboard.Modifiers == ModifierKeys.Control)
{
var draggedItem = e.Options.Source;
e.QueryResult = true;
e.Handled = true;
//RadMap1.mous
// Create Drag and Arrow Cue
ContentControl dragCue = new ContentControl();
dragCue.Content = draggedItem.DataContext;
dragCue.ContentTemplate = this.gridMain.Resources["F1"] as DataTemplate;
e.Options.DragCue = dragCue;
e.Options.ArrowCue = RadDragAndDropManager.GenerateArrowCue();
// Set the payload (this is the item that is currently dragged)
e.Options.Payload = draggedItem.DataContext;
}
if (e.Options.Status == DragStatus.DropSourceQuery)
{
e.QueryResult = true;
e.Handled = true;
}
}
/// <summary>
/// Initializes a new instance of the <see cref="AppointmentItem"/> class.
/// </summary>
public AppointmentItem()
{
RadDragAndDropManager.AddDragInfoHandler(this, this.OnAppointmentItemDragInfo);
}
private void ItemsControl_Loaded(object sender, RoutedEventArgs e)
{
RadDragAndDropManager.RemoveDragQueryHandler(sender as DependencyObject, Video_DragQuery);
RadDragAndDropManager.AddDragQueryHandler(sender as DependencyObject, Video_DragQuery);
}
protected override void PrepareContainerForItemOverride(DependencyObject element, object item)
{
base.PrepareContainerForItemOverride(element, item);
RadDragAndDropManager.SetAllowDrag(element, true);
}
private void InitializeTemplateDropTargetList(ListBox listBox)
{
RadDragAndDropManager.AddDropQueryHandler(listBox, DropTargetHelper.OnDropQuery);
RadDragAndDropManager.AddDropInfoHandler(listBox, DropTargetHelper.OnDropInfo);
}
/// <summary>
/// Initializes a new instance of the <see cref="TimeSlotItemsControl"/> class.
/// </summary>
public TimeSlotItemsControl()
{
RadDragAndDropManager.AddDropInfoHandler(this, this.OnTimeSlotItemsControlDropInfo);
RadDragAndDropManager.AddDropQueryHandler(this, this.OnTimeSlotItemsControlDropQuery);
}
