LinkingBaseTool

This does common initialization for the linking tools.

Gets or sets whether the linking operation is in the forwards direction.

Gets or sets the original node from which the link was connected.

Gets or sets the FrameworkElement that is the port from which the link was connected.

Gets or sets the original Link being reconnected by the RelinkingTool.

Gets or sets the original node to which the link was connected.

Gets or sets the FrameworkElement that is the port to which the link was connected.

Gets or sets the distance at which link snapping occurs.

Gets or sets a proposed FrameworkElement port for connecting a link.

Gets or sets the temporary Node at the "from" end of the link.

Gets the element representing the port for the TemporaryFromNode.

Gets or sets the temporary Link that is shown while the user is drawing or reconnecting a link.

Gets or sets the DataTemplate used to render the TemporaryLink.

Gets or sets the DataTemplate used to render the TemporaryFromNode and TemporaryToNode.

Gets or sets the temporary Node at the "to" end of the link.

Gets the element representing the port for the TemporaryToNode.

Gets or sets the dictionary used to keep track of ports for which a link may be valid.

Make a temporary port look and act like a real one.

realnode

realport

tempnode

tempport

toend

Construct a Link to act as a temporary link.

Construct a Node to act as a temporary node.

toend

Retorna: an unbound Node defined by the TemporaryNodeTemplate, or if that is null, by the default template named "DefaultTemporaryNodeTemplate".

Mouse movement results in the temporary node moving to where the valid TargetPort is located, or to where the mouse is if there is no valid target port nearby.

If needed, call Boolean) and CreateTemporaryLink, and capture the mouse.

Release the mouse capture and clear out any temporary state.

Find a port with which the user could complete a valid link.

toend

true if looking for a "to" port

Retorna: a FrameworkElement representing a valid port, or null if no such port is near the current mouse point (within PortGravity distance)

This predicate is true if both argument ports are in the same Node.

fromport

toport

This predicate is true if there is a link in the model going from to .

fromport

a FrameworkElement representing the "from" port

toport

a FrameworkElement representing the "to" port

This predicate is true if it is permissible to connect a link from a given node/port.

fromnode

fromport

Retorna: False if the is in a Layer that does not AllowLink. False if DependencyObject) for the is either false or null. False if the number of links connected to the would exceed the DependencyObject) value. Otherwise true.

This predicate should be true when it is logically valid to connect a link from one node/port to another node/port.

fromnode

the "from" Node

fromport

the "from" FrameworkElement

tonode

the "to" Node (perhaps the same as )

toport

the "to" FrameworkElement (perhaps the same as )

Retorna: False if FrameworkElement) is false for the and . False if FrameworkElement) is false for the and . False if FrameworkElement) is true unless DependencyObject) is true for both ports. False if FrameworkElement) is true unless DependencyObject) is true for both ports. False if trying to link to the link's own label node(s). False if Object) or one of the model-specific IsRelinkValid methods is false, depending on whether OriginalLink is null (a new link) or non-null (a relink). Otherwise true.

This predicate is true if it is permissible to connect a link to a given node/port.

tonode

toport

Retorna: False if the is in a Layer that does not AllowLink. False if DependencyObject) for the is either false or null. False if the number of links connected to the would exceed the DependencyObject) value. Otherwise true.

Reset temporary port properties to neutral values when there is no target port.

tempnode

tempport

Identifies the PortGravity dependency property.

Identifies the TemporaryLinkTemplate dependency property.

Identifies the TemporaryNodeTemplate dependency property.