def __init__(self, parent=None):
"""Constructor for the tab.
:param parent: parent - widget to use as parent (Wizad Dialog).
:type parent: QWidget
"""
WizardStep.__init__(self, parent)
# Set model for browser
browser_model = QgsBrowserModel()
self.proxy_model = LayerBrowserProxyModel(self)
self.proxy_model.setSourceModel(browser_model)
