recursive_plugin_provider.py
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1 # Copyright (c) 2011, Dirk Thomas, Dorian Scholz, TU Darmstadt
2 # All rights reserved.
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30 
31 import traceback
32 
33 from python_qt_binding.QtCore import qCritical
34 
35 from qt_gui.composite_plugin_provider import CompositePluginProvider
36 
37 
39  """
40  Plugin provider which directly loads and returns all discovered plugins.
41 
42  Discovered plugins should be plugin providers themselves.
43  """
44 
45  def __init__(self, plugin_provider):
46  super(RecursivePluginProvider, self).__init__([])
47  self.setObjectName('RecursivePluginProvider')
48 
49  self._plugin_provider = plugin_provider
50 
51  def discover(self, discovery_data):
52  # discover plugins, which are providers themselves
53  plugin_descriptors = self._plugin_provider.discover(discovery_data)
54 
55  # instantiate plugins
56  plugin_providers = []
57  for plugin_descriptor in plugin_descriptors:
58  try:
59  # pass None as PluginContext for PluginProviders
60  instance = self._plugin_provider.load(plugin_descriptor.plugin_id(), None)
61  except Exception:
62  qCritical('RecursivePluginProvider.discover() loading plugin "%s" failed:\n%s' %
63  (str(plugin_descriptor.plugin_id()), traceback.format_exc()))
64  else:
65  if instance is not None:
66  plugin_providers.append(instance)
67 
68  # delegate discovery through instantiated plugin providers to base class
69  self.set_plugin_providers(plugin_providers)
70  return CompositePluginProvider.discover(self, discovery_data)


qt_gui
Author(s): Dirk Thomas
autogenerated on Sun Nov 1 2020 04:03:22