DraggingTool

Gets or sets the collection of parts that this tool has copied.

Gets or sets whether for a copying operation the extended selection is copied or only selected parts.

Gets or sets the Part found at the mouse point by StandardMouseSelect.

Gets or sets whether the user can drag a single Link, disconnecting it from its connected nodes and possibly connecting it to valid ports when the link is dropped.

Gets or sets the Link that may be dragged and reconnected when DraggableLinks is true.

Gets or sets the collection of Parts being dragged.

Gets or sets whether a potentially external drag-and-drop has been started by this tool.

Gets or sets a Part, not being dragged, that the mouse is over, and sets its IsDropOntoAccepted property appropriately.

Gets or sets whether dragging any parts over the diagram or over any parts causes their position to be snapped to grid points.

Gets or sets whether stationary parts get their IsDropOntoAccepted property temporarily set to true during a drag.

Gets or sets whether a drop has occurred after a drag-out had started.

Gets or sets the port identifier used when Point) creates a new link due to DropOntoBehavior is AddsLinkFromNode, AddsLinkToNode, or SplicesIntoLink.

Gets or sets whether moving or copying a node also includes all of the node's children and their descendants, along with the links to those additional nodes.

Gets or sets whether parts move continuously during a drag or if a simple object is dragged instead, with the parts actually moving only upon a mouse up.

This is an experimental property that gets the DraggingTool that is the source of a simulated drag-and-drop.

Gets or sets the mouse point from which parts start to move.

Gets or sets the port identifier used when Point) creates a new link due to DropOntoBehavior is AddsLinkFromNode, AddsLinkToNode, or SplicesIntoLink.

Convert an IDataObject into an IDataCollection.

dataobj

An IDataObject, typically the value of DragEventArgs.Data

Returns: An IDataCollection that the diagram's model can copy

This tool can run if this diagram allows selection and moves/copies/dragging-out, if the mouse has moved far enough away to be a drag and not a click, and if FindDraggablePart has found a selectable part at the mouse-down point.

Find the actual collection of nodes and links to be moved or copied, given an initial collection.

parts

Returns: a Dictionary of Parts, mapped to Infos holding their original Locations

Determine the focus point or hot-spot point for an external drag.

parts

the copied Nodes and Links being dragged

Returns: a Point in model coordinates

This method computes the new location for a node, given a new desired location and a dictionary of dragged parts.

n

the Node being moved

newloc

the proposed new Location for the node , in model coordinates

draggedparts

a Dictionary of Parts being dragged

Returns: a new location for the node, in model coordinates

Determine if the currently dragged selection (DraggedParts or CopiedParts) would be valid to be dropped onto the target part , depending on its DropOntoBehavior.

pt

normally the current mouse point, in model coordinates

p

the Part under the mouse point that the selection might be dropped onto

This predicate is true if the given node can control the movement of the given node.

moving

the Node being dragged

pt

a Point in model coordinates, typically the current mouse point

snapper

the Node that might control the node's movement

draggedparts

a Dictionary of Parts being dragged

Returns: true if the is not in the and is DragOverSnapEnabled

Start the dragging operation.

Abort any dragging operation.

Call DragDrop.DoDragDrop.

data

this represents the data to be dragged

eff

this is passed as the third argument to DragDrop.DoDragDrop

Returns: the result of calling DragDrop.DoDragDrop

Update the DragEventArgs.Effects.

e

If no drop is allowed, remove any temporary copied parts.

e

Start a drag-and-drop operation.

For copies or external moves, create and move copied parts for the drag-and-drop data.

e

Perform the drop of a drag-and-drop.

e

By default this does nothing.

e

Handle switching between copying and moving modes as the Control key is pressed or released.

e

Handle switching between copying and moving modes as the Control key is pressed or released.

e

As the user moves the mouse, move the collection of CopiedParts or DraggedParts, depending on whether MayCopy or MayMove is true.

On a mouse-up finish moving or copying the effective selection.

If the user hits the ESCAPE key, call DoCancel to abort this tool.

e

Finish and clean-up after a dragging operation.

Affect some stationary unselected objects that are under a given point, and consider auto-scrolling.

pt

normally the current mouse point, in model coordinates

moving

copying

Perform any additional side-effects after a drop.

pt

Return the selectable and movable/copyable Part at the mouse-down point.

Returns: null if there is no selectable Part at the point, or if CanMove and CanCopy are both false.

This predicate is called to determine whether a Node may be reconnected by Point).

fromnode

tonode

relink

the Link to relink to connect the and the

Returns: the result of calling Object) if is null, or if is supplied, the result of calling Object), Object), or Object).

This predicate is called to determine whether a Node may be added as a member of the Group by Point).

group

this may be null if the node is being added as a top-level node

node

a Node, possibly another Group

Returns: the result of calling Object)

Create a representation of the Parts that are being dragged when IsRealtime is false.

bounds

The bounds occupied by the DraggedParts, in model coordinates

Returns: FrameworkElement

Decide whether an IDataObject is suitable for copying into this diagram's model.

dataobj

An IDataObject, typically the value of DragEventArgs.Data

Returns: By default, this checks whether the dataobject has data in the model's DataFormat or in the model's GetNodeType.

This predicate is true when the view allows objects to be copied and inserted, and some object in the diagram's selection is copyable, and the user is holding down the Control key.

This predicate is true if the user may copy the selection on an external drag-and-drop.

e

Returns: False if the AllowedEffects does not allow copy. False if Shift key modifier applies (trying to require a move). False if the diagram IsReadOnly or does not AllowInsert. False if the drag-and-drop started in this control. False if the model is not Modifiable. False if there is no drag-and-drop data of the model's DataFormat. Otherwise true.

This predicate is true if the user may copy the selection on an internal drag-and-drop.

e

Returns: False if the AllowedEffects does not allow copy. False if Shift key modifier applies (trying to require a move). False if the diagram IsReadOnly or does not AllowInsert. False if the drag-and-drop came from another control. False if the model is not Modifiable. Otherwise true.

This predicate is true when the view allows objects to be moved, and some object in the Selection is movable.

This predicate is true if the user may move the selection on an external drag-and-drop.

e

Returns: False if the AllowedEffects does not allow move. False if Control key modifier applies (trying to require a copy). False if the diagram IsReadOnly or does not AllowInsert. False if the drag-and-drop started in this control. False if the model is not Modifiable. False if there is no drag-and-drop data of the model's DataFormat. Otherwise true.

This predicate is true if the user may move the selection on an internal drag-and-drop.

e

Returns: False if the AllowedEffects does not allow move. False if Control key modifier applies (trying to require a copy). False if the diagram IsReadOnly or does not AllowMove. False if the drag-and-drop came from another control. Otherwise true.

Move a collection of Parts by a given offset.

parts

a Dictionary of parts, mapped to Info values that include the nodes' original locations

offset

a Point value in model coordinates

Compute the new location for a node, given another node that is controlling its movement.

moving

the Node being dragged

pt

the Point in model coordinates to which the node is being dragged

snapper

the Node, typically a grid, which is controlling the drag snapping

draggedparts

a Dictionary of Parts being dragged

Returns: a new node location, in model coordinates

Don't have the Control modifier unselect an already selected part.

Identifies the CopiesEffectiveCollection dependency property.

Identifies the DraggableLinks dependency property.

Identifies the DragOverSnapArea dependency property.

Identifies the DropOntoEnabled dependency property.

Identifies the FromPortId dependency property.

Identifies the Inclusions dependency property.

Identifies the IsRealtime dependency property.

Identifies the ToPortId dependency property.