Scheme Link (link)

Scheme Link

class orangecanvas.scheme.link.SchemeLink(source_node, source_channel, sink_node, sink_channel, enabled=True, properties=None, parent=None)

Bases: PyQt4.QtCore.QObject

A instantiation of a link between two SchemeNode instances in a Scheme.

Parameters:

• source_node (SchemeNode) – Source node.
• source_channel (OutputSignal) – The source widget’s signal.
• sink_node (SchemeNode) – The sink node.
• sink_channel (InputSignal) – The sink widget’s input signal.
• properties (dict) – Additional link properties.

enabled_changed(enabled)

The link enabled state has changed

dynamic_enabled_changed(enabled)

The link dynamic enabled state has changed.

source_type()

Return the type of the source channel.

sink_type()

Return the type of the sink channel.

is_dynamic()

Is this link dynamic.

set_enabled(enabled)

Enable/disable the link.

enabled

Is this link enabled.

set_dynamic_enabled(enabled)

Enable/disable the dynamic link. Has no effect if the link is not dynamic.

dynamic_enabled

Is this a dynamic link and is dynamic_enabled set to True

set_tool_tip(tool_tip)

Set the link tool tip.

tool_tip

Link tool tip.