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from typing import TYPE_CHECKING
from patshared import PortType
from ..patchcanvas import patchcanvas
if TYPE_CHECKING:
from ..patchbay_manager import PatchbayManager
from .port import Port
class Connection:
def __init__(self, manager: 'PatchbayManager', connection_id: int,
port_out: 'Port', port_in: 'Port'):
self.manager = manager
self.connection_id = connection_id
self.port_out = port_out
self.port_in = port_in
self.in_canvas = False
@property
def port_type(self) -> PortType:
return self.port_out.type
def add_to_canvas(self):
if self.manager.very_fast_operation:
return
if self.in_canvas:
return
if not (self.port_out.in_canvas and self.port_in.in_canvas):
for port in (self.port_out, self.port_in):
port.set_hidden_conn_in_canvas(self, True)
return
patchcanvas.connect_ports(
self.connection_id,
self.port_out.group_id, self.port_out.port_id,
self.port_in.group_id, self.port_in.port_id)
self.in_canvas = True
for port in (self.port_out, self.port_in):
port.set_hidden_conn_in_canvas(self, False)
def remove_from_canvas(self):
if self.manager.very_fast_operation:
return
for port in (self.port_out, self.port_in):
port.set_hidden_conn_in_canvas(self, False)
if not self.in_canvas:
return
patchcanvas.disconnect_ports(self.connection_id)
self.in_canvas = False
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