Hello,
How would one identify the parent of a selected item in a QTreeWidget?
I have a tree with several branches. Each branch contains leaves with
the same names. (See attached sample code.) I'd like to be able to
identify that the leave item selected, say "Bbbb," was picked from
branch "Three."
I'm identifying the selected leaf item with currentItem(). (See line
126 in pickItem()). The currentIndex() method returns indeces that
appear to be relative to the leaf's parent, which in this case doesn't
help me identify which branch item is the selected item's parent.
Thanks in advance!
Scott
#!/usr/bin/env python
#-------------------------------------------------------------------------------
# imports
#-------------------------------------------------------------------------------
import sys
from PyQt4 import QtCore, QtGui, QtSql
#-------------------------------------------------------------------------------
# class
#-------------------------------------------------------------------------------
class TreeTest(QtGui.QDialog):
def __init__(self, parent=None):
QtGui.QDialog.__init__(self)
# init widgets
# ------------------------------------------------
self.theFrame = QtGui.QFrame()
self.theFrame.setFrameStyle(QtGui.QFrame.NoFrame)
# tree
# ------------------------------------------------
self.theGroup = QtGui.QGroupBox()
self.theTree = QtGui.QTreeWidget()
self.theTree.clear()
self.theTree.headerItem().setText(0, "The Tree")
self.theTree.setAlternatingRowColors(True)
self.theLayout = QtGui.QVBoxLayout()
self.theLayout.setContentsMargins(0, 0, 0, 0)
self.theLayout.addWidget(self.theTree)
self.theGroup.setLayout(self.theLayout)
# main layout
# ------------------------------------------------
self.formLayout = QtGui.QHBoxLayout()
self.formLayout.setContentsMargins(0, 0, 0, 0)
self.formLayout.addWidget(self.theGroup)
self.theFrame.setLayout(self.formLayout)
self.theLayout = QtGui.QVBoxLayout()
self.theLayout.setContentsMargins(0, 0, 0, 0)
self.theLayout.addWidget(self.theFrame)
self.setLayout(self.theLayout)
# signals/slots
# ------------------------------------------------
self.connect(self.theTree, QtCore.SIGNAL("itemSelectionChanged()"), self.selectItem)
# defaults
# ------------------------------------------------
tocItemList = self.setTheTree()
for item in tocItemList:
print item
print ""
# methods
# ------------------------------------------------
def setTheTree(self):
# init toc item list
tocItemList = []
tocDict = self.setTableOfContents()
tocKeys = tocDict.keys()
tocKeys.sort()
thePageList = ["Aaaa", "Bbbb", "Cccc"]
# set ONE
oneRootStr = "One"
oneRoot = QtGui.QTreeWidgetItem(self.theTree, [oneRootStr])
tocItemList.append(oneRootStr)
self.theTree.expandItem(oneRoot)
for one in tocDict["one"]:
oneStr = str(one)
one = QtGui.QTreeWidgetItem(oneRoot, [oneStr])
tocItemList.append(oneStr)
for page in thePageList:
pageStr = str(page)
page = QtGui.QTreeWidgetItem(one, [pageStr])
return tocItemList
def setTableOfContents(self):
tocDict = {}
# one
oneList = ["One", "Two", "Three"]
tocDict["one"] = oneList
return tocDict
def selectItem(self):
print self.theTree.currentItem().text(0)
index = self.theTree.currentIndex()
print "row: ", index.row() # returns row number relative to branch parent
print ""
#-------------------------------------------------------------------------------
# main
#-------------------------------------------------------------------------------
if __name__ == "__main__":
app = QtGui.QApplication(sys.argv)
form = TreeTest()
form.setWindowTitle("Tree Test")
form.show()
sys.exit(app.exec_())
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