def __init__(self, gloss_text='', comments=None, syntax=None):
""" Create an empty forest. Gloss_text and comments are metadata
about trees that doesn't belong to syntax implementation, so its kept here. Syntax
implementations may still use it.
By default, a new Forest doesn't create its nodes -- it doesn't do the derivation yet.
This is to save speed and memory with large structures. If the is_parsed -flag is False
when created, but once Forest is displayed, the derivation has to run and after that
is_parsed is True.
"""
super().__init__()
self.nodes_from_synobs = {}
self.main = ctrl.main
self.main.forest = self # assign self to be the active forest while
# creating the managers.
self.in_display = False
self.visualization = None
self.gloss = None
self.is_parsed = False
self.syntax = syntax or classes.get('SyntaxConnection')()
self.parser = INodeToKatajaConstituent(self)
self.undo_manager = UndoManager(self)
self.chain_manager = ChainManager(self)
self.tree_manager = TreeManager(self)
self.free_drawing = FreeDrawing(self)
self.projection_manager = ProjectionManager(self)
self.derivation_steps = DerivationStepManager(self)
self.old_label_mode = 0
self.trees = []
self.nodes = {}
self.edges = {}
self.groups = {}
self.others = {}
self.vis_data = {}
self.width_map = {}
self.traces_to_draw = {}
self.comments = []
self.gloss_text = ''
self.ongoing_animations = set()
self.halt_drawing = False
self.gloss_text = gloss_text
self.comments = comments
# Update request flags
self._do_edge_visibility_check = False
def clear(self):
if self.in_display:
for item in self.get_all_objects():
self.remove_from_scene(item, fade_out=False)
self.nodes_from_synobs = {}
self.gloss = None
self.parser = INodeToKatajaConstituent(self)
self.undo_manager = UndoManager(self)
self.chain_manager = ChainManager(self)
self.tree_manager = TreeManager(self)
self.free_drawing = FreeDrawing(self)
self.projection_manager = ProjectionManager(self)
self.derivation_steps = DerivationStepManager(self)
self.trees = []
self.nodes = {}
self.edges = {}
self.groups = {}
self.others = {}
self.width_map = {}
self.traces_to_draw = {}
self.comments = []
self.gloss_text = ''
