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102 lines
2.6 KiB
102 lines
2.6 KiB
# -*- coding: utf-8 -*-
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#
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from rest_framework import serializers
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class TreeNode:
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id = ""
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name = ""
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comment = ""
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title = ""
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isParent = False
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pId = ""
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open = False
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iconSkin = ""
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meta = {}
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_tree = None
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def __init__(self, **kwargs):
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for k, v in kwargs.items():
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setattr(self, k, v)
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@classmethod
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def root(cls):
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return cls(id="#", name='Root', title='Root', isParent=True, open=True)
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def get_parent(self):
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return self._tree.get_node(self.pId)
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def get_parents(self):
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parent = self.get_parent()
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if parent == self._tree.root:
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return []
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parents = [parent]
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parents.extend(parent.get_parents())
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return parents
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def add_child(self, child):
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self._tree.add_node(child, self)
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def __str__(self):
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return '<{}: {}>'.format(self.id, self.name)
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__repr__ = __str__
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def __gt__(self, other):
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if self.isParent and not other.isParent:
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result = False
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elif not self.isParent and other.isParent:
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result = True
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elif self.pId != other.pId:
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result = self.pId > other.pId
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elif self.id.startswith('-') and not other.id.startswith('-'):
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result = False
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else:
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result = self.name > other.name
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return result
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def __le__(self, other):
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return not self.__gt__(other)
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def __eq__(self, other):
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return self.id == other.id
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class Tree:
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def __init__(self):
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self.nodes = {}
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self.root = TreeNode.root()
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self.root._tree = self
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def add_node(self, node, parent=None):
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node._tree = self
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if not parent:
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parent = self.root
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if parent.id not in self.nodes and parent != self.root:
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raise ValueError("Parent not in tree")
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elif node in parent.get_parents():
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raise ValueError("Parent must not be node parent")
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node.pId = parent.id
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parent.isParent = True
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self.nodes[node.key] = node
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def get_nodes(self):
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return sorted(self.nodes.values())
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def get_node(self, tid):
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return self.nodes.get(tid) or TreeNode.root()
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class TreeNodeSerializer(serializers.Serializer):
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id = serializers.CharField(max_length=128)
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name = serializers.CharField(max_length=128)
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title = serializers.CharField(max_length=128)
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pId = serializers.CharField(max_length=128)
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isParent = serializers.BooleanField(default=False)
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open = serializers.BooleanField(default=False)
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iconSkin = serializers.CharField(max_length=128, allow_blank=True)
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meta = serializers.JSONField()
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