84 lines
2.8 KiB
Python
84 lines
2.8 KiB
Python
# -*- coding: utf-8 -*-
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from pyqtgraph.Qt import QtGui, QtCore
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from pyqtgraph.pgcollections import OrderedDict
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import types, traceback
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import numpy as np
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try:
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import metaarray
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HAVE_METAARRAY = True
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except:
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HAVE_METAARRAY = False
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__all__ = ['DataTreeWidget']
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class DataTreeWidget(QtGui.QTreeWidget):
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"""
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Widget for displaying hierarchical python data structures
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(eg, nested dicts, lists, and arrays)
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"""
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def __init__(self, parent=None, data=None):
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QtGui.QTreeWidget.__init__(self, parent)
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self.setVerticalScrollMode(self.ScrollPerPixel)
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self.setData(data)
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self.setColumnCount(3)
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self.setHeaderLabels(['key / index', 'type', 'value'])
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def setData(self, data, hideRoot=False):
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"""data should be a dictionary."""
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self.clear()
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self.buildTree(data, self.invisibleRootItem(), hideRoot=hideRoot)
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#node = self.mkNode('', data)
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#while node.childCount() > 0:
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#c = node.child(0)
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#node.removeChild(c)
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#self.invisibleRootItem().addChild(c)
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self.expandToDepth(3)
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self.resizeColumnToContents(0)
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def buildTree(self, data, parent, name='', hideRoot=False):
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if hideRoot:
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node = parent
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else:
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typeStr = type(data).__name__
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if typeStr == 'instance':
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typeStr += ": " + data.__class__.__name__
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node = QtGui.QTreeWidgetItem([name, typeStr, ""])
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parent.addChild(node)
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if isinstance(data, types.TracebackType): ## convert traceback to a list of strings
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data = list(map(str.strip, traceback.format_list(traceback.extract_tb(data))))
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elif HAVE_METAARRAY and (hasattr(data, 'implements') and data.implements('MetaArray')):
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data = {
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'data': data.view(np.ndarray),
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'meta': data.infoCopy()
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}
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if isinstance(data, dict):
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for k in data:
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self.buildTree(data[k], node, str(k))
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elif isinstance(data, list) or isinstance(data, tuple):
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for i in range(len(data)):
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self.buildTree(data[i], node, str(i))
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else:
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node.setText(2, str(data))
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#def mkNode(self, name, v):
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#if type(v) is list and len(v) > 0 and isinstance(v[0], dict):
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#inds = map(unicode, range(len(v)))
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#v = OrderedDict(zip(inds, v))
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#if isinstance(v, dict):
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##print "\nadd tree", k, v
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#node = QtGui.QTreeWidgetItem([name])
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#for k in v:
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#newNode = self.mkNode(k, v[k])
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#node.addChild(newNode)
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#else:
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##print "\nadd value", k, str(v)
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#node = QtGui.QTreeWidgetItem([unicode(name), unicode(v)])
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#return node
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