facade_highlevelsystem.py

Go to the documentation of this file.

 
 
from .facade_interface import IDeviceNetworkHighLevel
from .facadesubsystem_interface import IDeviceNetworkLowLevel
from .facade_complicatedsubsystem import CreateLowLevelInstance
 
 
class DeviceNetworkHighLevel(IDeviceNetworkHighLevel):
 
    
    def __init__(self, system : IDeviceNetworkLowLevel) -> None:
        if not system:
            raise ValueError("The system being wrapped cannot be None.")
        self._lowLevelSystem = system  # type: IDeviceNetworkLowLevel
 
    
 
 
    #====================================================================
    # IDeviceNetworkHighLevel methods
    #====================================================================
 
    #  @copydoc IDeviceNetworkHighLevel.GetNumChains()
    def GetNumChains(self) -> int:
        return self._lowLevelSystem.GetNumChains()
 
 
    #  @copydoc IDeviceNetworkHighLevel.GetIdcodes()
    def GetIdcodes(self, chainIndex : int) -> list:
        idcodes = []
 
        if self._lowLevelSystem.LockDeviceChain(chainIndex):
            idcodes = self._lowLevelSystem.GetIdcodes(chainIndex)
            self._lowLevelSystem.UnlockDeviceChain(chainIndex)
 
        return idcodes
 
 
    #  @copydoc IDeviceNetworkHighLevel::EnableDevicesInDeviceChain()
    def EnableDevicesInDeviceChain(self, chainIndex: int, selectMask : int) -> None:
        if self._lowLevelSystem.LockDeviceChain(chainIndex):
            self._lowLevelSystem.EnableDevicesInDeviceChain(chainIndex, selectMask)
            self._lowLevelSystem.UnlockDeviceChain(chainIndex)
 
 
    #  @copydoc IDeviceNetworkHighLevel::DisableDevicesInDeviceChain()
    def DisableDevicesInDeviceChain(self, chainIndex : int) -> None:
        if self._lowLevelSystem.LockDeviceChain(chainIndex):
            self._lowLevelSystem.ResetDeviceChain(chainIndex)
            self._lowLevelSystem.UnlockDeviceChain(chainIndex)
 
 
 
 
 
_instance = None # type: DeviceNetworkHighLevel
 
 
def CreateHighLevelInstance() -> IDeviceNetworkHighLevel:
    global _instance
    if not _instance:
        lowlevelSystem = CreateLowLevelInstance()
        _instance = DeviceNetworkHighLevel(lowlevelSystem)
    return _instance