def set_tab(self):
"""
Device tab opened. Populate the device and task lists, and open the
properties for the first device (if applicable)
"""
# Open all 'sidebar' tree branches
self.SidebarTree.expandAll()
# Populate sidebar
tasks_branch = self.SidebarTree.invisibleRootItem().child(0)
devices_branch = self.SidebarTree.invisibleRootItem().child(1)
# Give IDs for fixed items
tasks_branch.section = None
devices_branch.section = None
tasks_branch.child(0).section = "apply-to-all"
# Recache the device list
self.SidebarTree.parent().show()
self.appdata.device_list = self.middleman.get_device_list()
unknown_device_list = self.middleman.get_unsupported_devices()
# Clear device entries
devices_branch.takeChildren()
for device_item in self.appdata.device_list:
item = QTreeWidgetItem()
item.setText(0, device_item["name"])
item.setIcon(0, QIcon(device_item["form_factor"]["icon"]))
item.section = "device"
item.backend = device_item["backend"]
item.uid = device_item["uid"]
devices_branch.addChild(item)
devices_branch.sortChildren(0, Qt.AscendingOrder)
for device_item in unknown_device_list:
item = QTreeWidgetItem()
item.setText(0, device_item["name"])
item.setIcon(0, QIcon(device_item["form_factor"]["icon"]))
item.section = "device-unknown"
item.backend = device_item["backend"]
devices_branch.addChild(item)
# Only show tasks when there are multiple devices present
if len(self.appdata.device_list) > 1:
tasks_branch.setHidden(False)
else:
tasks_branch.setHidden(True)
# Backends loaded, but no usable devices
if len(self.appdata.device_list) == 0 and len(unknown_device_list) > 0:
devices_branch.child(0).setSelected(True)
self.open_unknown_device(devices_branch.child(0).backend)
# All backends failed to load
elif len(self.middleman.backends) == 0 and len(self.middleman.import_errors) > 0:
self._open_no_backend_found(1)
# No backends are installed
elif len(self.middleman.backends) == 0 and len(self.middleman.not_installed) > 0:
self._open_no_backend_found(2)
# Backends present, but no devices listed
elif len(self.appdata.device_list) == 0:
self._open_no_backend_found(0)
# Open the first device initially
if len(self.appdata.device_list) > 0:
first_item = devices_branch.child(0)
first_item.setSelected(True)
self.open_device(first_item.backend, first_item.uid)
