如何将 QListWidget 滚动到所选项目

Question

The code below creates a single dialog window with QListWidget and QPushButton . Clicking the button fires up a scroll() function which finds and selects an "ITEM-0011".

I wonder if there is a way to scroll the list widget so the selected ITEM-0011 is at the top edge of QListWidget ? Here is how the end result should look like:

from PyQt4 import QtCore, QtGui
app=QtGui.QApplication([])

def scroll():
    item = listWidget.findItems('ITEM-0011', QtCore.Qt.MatchRegExp)[0]
    item.setSelected(True)

window = QtGui.QDialog()
window.setLayout(QtGui.QVBoxLayout())
listWidget = QtGui.QListWidget()
window.layout().addWidget(listWidget)

for i in range(100):
    QtGui.QListWidgetItem('ITEM-%04d'%i, listWidget)

btn = QtGui.QPushButton('Scroll')
btn.clicked.connect(scroll)
window.layout().addWidget(btn)
window.show()
app.exec_()

Answer 1

The list-widget has a scrollToItem method that will scroll an item to aspecific position :

def scroll():
    item = listWidget.findItems('ITEM-0011', QtCore.Qt.MatchRegExp)[0]
    item.setSelected(True)
    listWidget.scrollToItem(item, QtGui.QAbstractItemView.PositionAtTop)