def showProgress(text, iter, cancel=False):
"""
Show a progress dialog for the given task. The task should be an iterable, yielding progress info as
(current, max) or (current, max, statusString) tuples. Return the last value yielded by the task.
:param text:
:type text:
:param iter:
:type iter:
:param cancel:
:type cancel:
:return:
:rtype:
"""
from mcedit2 import editorapp
dialog = QtGui.QProgressDialog(editorapp.MCEditApp.app.mainWindow)
dialog.setWindowTitle(text)
dialog.setWindowModality(Qt.WindowModal)
dialog.show()
progress = None
LoaderTimer.stopAll()
for progress in iter:
if isinstance(progress, basestring):
max = current = 0
status = progress
elif isinstance(progress, (tuple, list)):
if len(progress) > 2:
current, max, status = progress[:3]
else:
current, max = progress
status = ""
else:
current = max = 1
status = ""
dialog.setValue(current)
dialog.setMaximum(max)
dialog.setLabelText(status)
QtGui.QApplication.processEvents()
if dialog.wasCanceled():
return False
LoaderTimer.startAll()
dialog.close()
return progress
