mirror of
https://github.com/arsenetar/dupeguru.git
synced 2024-11-18 04:59:03 +00:00
67 lines
1.8 KiB
Python
67 lines
1.8 KiB
Python
#!/usr/bin/env python
|
|
# Unit Name: tree_model
|
|
# Created By: Virgil Dupras
|
|
# Created On: 2009-05-04
|
|
# $Id$
|
|
# Copyright 2009 Hardcoded Software (http://www.hardcoded.net)
|
|
|
|
from PyQt4.QtCore import Qt, QAbstractItemModel, QVariant, QModelIndex
|
|
|
|
class TreeNode(object):
|
|
def __init__(self, parent, row):
|
|
self.parent = parent
|
|
self.row = row
|
|
self._children = None
|
|
|
|
def _get_children(self):
|
|
raise NotImplementedError()
|
|
|
|
@property
|
|
def children(self):
|
|
if self._children is None:
|
|
self._children = self._get_children()
|
|
return self._children
|
|
|
|
|
|
class TreeModel(QAbstractItemModel):
|
|
def __init__(self):
|
|
QAbstractItemModel.__init__(self)
|
|
self._nodes = None
|
|
|
|
def _root_nodes(self):
|
|
raise NotImplementedError()
|
|
|
|
def index(self, row, column, parent):
|
|
if not self.nodes:
|
|
return QModelIndex()
|
|
if not parent.isValid():
|
|
return self.createIndex(row, column, self.nodes[row])
|
|
node = parent.internalPointer()
|
|
return self.createIndex(row, column, node.children[row])
|
|
|
|
def parent(self, index):
|
|
if not index.isValid():
|
|
return QModelIndex()
|
|
node = index.internalPointer()
|
|
if node.parent is None:
|
|
return QModelIndex()
|
|
else:
|
|
return self.createIndex(node.parent.row, 0, node.parent)
|
|
|
|
def reset(self):
|
|
self._nodes = None
|
|
QAbstractItemModel.reset(self)
|
|
|
|
def rowCount(self, parent):
|
|
if not parent.isValid():
|
|
return len(self.nodes)
|
|
node = parent.internalPointer()
|
|
return len(node.children)
|
|
|
|
@property
|
|
def nodes(self):
|
|
if self._nodes is None:
|
|
self._nodes = self._root_nodes()
|
|
return self._nodes
|
|
|