/// <inheritdoc />
public override void OnDragLeave()
{
_currentDragEffect = DragDropEffect.None;
_timeline.DragHandlers.ForEach(x => x.Helper.OnDragLeave());
base.OnDragLeave();
}
public void NotifyDropped(DragDropEffect dropEffect)
{
if (dropEffect == DragDropEffect.Move)
{
this.CloseGroup();
}
}
/// <inheritdoc />
public override DragDropEffect OnDragEnter(ref Vector2 location, DragData data)
{
var result = base.OnDragEnter(ref location, data);
if (result == DragDropEffect.None)
{
if (_needSetup)
{
_needSetup = false;
_timeline.SetupDragDrop();
}
for (int i = 0; i < _timeline.DragHandlers.Count; i++)
{
var dragHelper = _timeline.DragHandlers[i].Helper;
if (dragHelper.OnDragEnter(data))
{
result = dragHelper.Effect;
break;
}
}
_currentDragEffect = result;
}
return(result);
}
/// <summary>
/// Notifies the handler, that a drag operation has started above the control
/// </summary>
public void NotifyDragStarted(DragDropEffect effect)
{
if (effect != DragDropEffect.None)
{
this.SetUpAdorner();
}
}
public void Drop(IEnumerable <IDragSource> nodes, DropPosition mode, DragDropEffect effect, DragDropKeyStates initialKeyStates)
{
foreach (var node in nodes)
{
this.Drop(node, mode, effect == DragDropEffect.Copy);
}
}
public void Drop(IEnumerable<IDragSource> nodes, DropPosition mode, DragDropEffect effect, DragDropKeyStates initialKeyStates)
{
foreach (var node in nodes)
{
this.Drop(node, mode, effect == DragDropEffect.Copy);
}
}
private void HandleDragStart(DragDropEffect effect)
{
if (this.isDragging == false)
{
this.OpenPopup();
this.dragTargetHandler.NotifyDragStarted(effect);
this.isDragging = true;
}
}
/// <summary>
/// Notifies the handler of an update of the mouse position on the control
/// </summary>
public void NotifyDragChanged(DragDropEffect effect, DragPosition position)
{
if (effect == DragDropEffect.None)
{
this.TearDownAdorner();
}
else
{
this.SetUpAdorner();
}
}
/// <summary>
/// Drops the data on the target with the given drop effect. <c>additionalDropInfo</c> may contain
/// additonal data that can be used during the drop operation, depending on the type of target UI control
/// </summary>
public void DoDrop(IDataObject data, DragDropEffect effect, AdditionalDropInfo additionalDropInfo)
{
DragDropItemHandlerBase ItemHandler = this.GetItemHandler(data);
if (ItemHandler != null)
{
ItemHandler.DoDrop(data, effect, additionalDropInfo);
}
else
{
throw new InvalidOperationException("drag drop not requested, but doDrop was called");
}
}
/// <summary>
/// Notifies the handler of an update of the mouse position on the control
/// </summary>
public void NotifyDragChanged(DragDropEffect effect, DragPosition position)
{
if (effect == DragDropEffect.None)
{
this.TearDownAdorner();
}
else
{
int DropIndex = this.CalculateDropIndex(position.GetPosition(this.Element));
Rect DropMarker = this.CalculateDropMarker(DropIndex);
this.UpdateAdorner(DropIndex, DropMarker);
}
}
public bool CanDrop(IDragSource node, DropPosition mode, DragDropEffect effect)
{
var cvm2 = this;
while (cvm2 != null)
{
if (cvm2 == node)
{
return(false);
}
cvm2 = cvm2.Parent;
}
return(node is NodeViewModel && (mode == DropPosition.Add || this.Parent != null));
}
/// <summary>
/// Called when drag enter.
/// </summary>
/// <param name="data">The data.</param>
/// <returns>The result.</returns>
public DragDropEffect OnDragEnter(/*ref Vector2 location, */ DragData data)
{
DragDropEffect effect = DragDropEffect.None;
for (var i = 0; i < Count; i++)
{
var dragHelper = this[i];
if (dragHelper.OnDragEnter(data))
{
effect = dragHelper.Effect;
}
}
return(effect);
}
/// <inheritdoc />
public override DragDropEffect OnDragEnter(ref Vector2 location, DragData data)
{
_dragEffect = DragDropEffect.None;
var result = base.OnDragEnter(ref location, data);
if (result != DragDropEffect.None)
{
return(result);
}
if (data is DragDataText textData && DragScripts.IsValidData(textData))
{
return(_dragEffect = DragDropEffect.Move);
}
return(result);
}
private DragDropEffects GetDropEffect(DragDropEffects allowedEffects, DragDropKeyStates keyStates, IDataObject data)
{
DragDropEffects AcceptedEffects = this.targetHandler.GetDropEffects(data);
DragDropKeyStates KeyboardStates = keyStates & (DragDropKeyStates.AltKey | DragDropKeyStates.ShiftKey | DragDropKeyStates.ControlKey);
DragDropKeyStates MouseStates = keyStates & (DragDropKeyStates.LeftMouseButton | DragDropKeyStates.RightMouseButton | DragDropKeyStates.MiddleMouseButton);
if (AcceptedEffects == DragDropEffects.Scroll)
{
return(DragDropEffects.Scroll);
}
if (KeyboardStates == DragDropKeyStates.None)
{
DragDropEffect DefaultEffect = this.targetHandler.GetDefaultEffect(data);
if ((allowedEffects & (DragDropEffects)DefaultEffect) != 0)
{
return((DragDropEffects)DefaultEffect);
}
}
else if ((KeyboardStates & DragDropKeyStates.ControlKey) != 0)
{
if ((allowedEffects & DragDropEffects.Copy) != 0 && (AcceptedEffects & DragDropEffects.Copy) != 0)
{
return(DragDropEffects.Copy);
}
}
else if ((KeyboardStates & DragDropKeyStates.ShiftKey) != 0)
{
if ((allowedEffects & DragDropEffects.Move) != 0 && (AcceptedEffects & DragDropEffects.Move) != 0)
{
return(DragDropEffects.Move);
}
}
else if ((KeyboardStates & DragDropKeyStates.AltKey) != 0)
{
if ((allowedEffects & DragDropEffects.Link) != 0 && (AcceptedEffects & DragDropEffects.Link) != 0)
{
return(DragDropEffects.Link);
}
}
return(DragDropEffects.None);
}
/// <inheritdoc />
public override DragDropEffect OnDragDrop(ref Vector2 location, DragData data)
{
var result = base.OnDragDrop(ref location, data);
if (result != DragDropEffect.None)
{
return(result);
}
if (_dragEffect != DragDropEffect.None)
{
result = _dragEffect;
_dragEffect = DragDropEffect.None;
_editor.ReorderScript(_script, _index);
}
return(result);
}
/// <summary>
/// Notifies the handler, that a drag operation has started above the control
/// </summary>
/// <param name="effect"></param>
public void NotifyDragStarted(DragDropEffect effect)
{
TabPanel TabPanel = this.element.GetVisualDescendantsDepthFirst <TabPanel>().FirstOrDefault();
if (TabPanel != null)
{
IDragDropUiTargetHandler Handler = DragDrop.GetDragDropUITargetHandler(TabPanel.GetType());
if (Handler != null)
{
this.panelTargetHandler = Handler.Create(TabPanel, this.adapter, false);
}
}
if (this.panelTargetHandler == null)
{
this.panelTargetHandler = new DummyUiHandler();
}
this.panelTargetHandler.NotifyDragStarted(effect);
}
/// <summary>
/// Notifies the handler, that a drag operation has started above the control
/// </summary>
/// <param name="effect"></param>
public void NotifyDragStarted(DragDropEffect effect)
{
ItemsPresenter ItemsPresenter = this.element.GetVisualDescendantsDepthFirst <ItemsPresenter>().FirstOrDefault();
if (ItemsPresenter != null)
{
Panel ItemsPanel = VisualTreeHelper.GetChild(ItemsPresenter, 0) as Panel;
if (ItemsPanel != null)
{
IDragDropUiTargetHandler Handler = DragDrop.GetDragDropUITargetHandler(ItemsPanel.GetType());
if (Handler != null)
{
this.panelTargetHandler = Handler.Create(ItemsPanel, this.adapter, false);
}
}
}
if (this.panelTargetHandler == null)
{
this.panelTargetHandler = new DummyUiHandler();
}
this.panelTargetHandler.NotifyDragStarted(effect);
}
public bool CanDrop(IDragSource node, DropPosition mode, DragDropEffect effect)
{
return node is NodeViewModel && (mode == DropPosition.Add || this.Parent != null);
}
public void NotifyDropped(DragDropEffect dropEffect)
{
}
public abstract void DoDrop(IDataObject data, DragDropEffect effect, AdditionalDropInfo additionalDropInfo);
override bool CanDrop(TreeNodeController source, DragDropEffect effect)
{
return(false);
}
override bool CanDrop(TreeNodeController source, DragDropEffect effect)
{
return(!IsReadOnly && !data.IsChildOf(source.data) && effect == DragDropEffect.Move);
}
public bool CanDrop(IDragSource node, DropPosition mode, DragDropEffect effect)
{
return(node is NodeViewModel && (mode == DropPosition.Add || this.Parent != null));
}
private void HandleDragUpdate(DragDropEffect effect, DragPosition position)
{
this.dragTargetHandler.NotifyDragChanged(effect, position);
}
public void NotifyDragChanged(DragDropEffect effect, DragPosition position)
{
}
public void NotifyDragStarted(DragDropEffect effect)
{
}
public bool CanDrop(IDragSource node, DropPosition dropPosition, DragDropEffect effect)
{
return(true);
}
public override void DoDrop(IDataObject data, DragDropEffect effect, AdditionalDropInfo additionalDropInfo)
{
TItemType Data = this.GetData(data);
this.doDropAction(Data, effect, additionalDropInfo);
}
/// <inheritdoc />
public override void OnDragLeave()
{
_dragEffect = DragDropEffect.None;
base.OnDragLeave();
}
public void Drop(IEnumerable <IDragSource> items, DropPosition dropPosition, DragDropEffect effect, PropertyTools.DragDropKeyStates initialKeyStates)
{
}
/// <summary>
/// Notifies the handler of an update of the mouse position on the control
/// </summary>
public void NotifyDragChanged(DragDropEffect effect, DragPosition position)
{
this.panelTargetHandler.NotifyDragChanged(effect, position);
}
// ReSharper disable MemberCanBePrivate.Global
/// <summary>
/// Add handling routines for the given <c>ItemType</c>. Allowed effects are given as concrete values.
/// </summary>
public DragDropTargetFactory AddTypeHandler <TItemType>(DragDropEffects allowedEffects, DragDropEffect defaultEffect, Action <TItemType, DragDropEffect, AdditionalDropInfo> doDropAction)
{
return(this.AddTypeHandler(_ => allowedEffects, _ => defaultEffect, doDropAction));
}