def __init__(self, parent, rospack, signal_msg=None):
"""
@param signal_msg: Signal to carries a system msg that is shown on GUI.
@type signal_msg: QtCore.Signal
"""
super(NodeSelectorWidget, self).__init__()
self._parent = parent
self.stretch = None
self._signal_msg = signal_msg
ui_file = os.path.join(rospack.get_path('rqt_reconfigure'), 'resource',
'node_selector.ui')
loadUi(ui_file, self)
# List of the available nodes. Since the list should be updated over
# time and we don't want to create node instance per every update
# cycle, This list instance should better be capable of keeping track.
self._nodeitems = OrderedDict()
# Dictionary. 1st elem is node's GRN name,
# 2nd is TreenodeQstdItem instance.
# TODO: Needs updated when nodes list updated.
# Setup treeview and models
self._item_model = TreenodeItemModel()
self._rootitem = self._item_model.invisibleRootItem() # QStandardItem
self._nodes_previous = None
# Calling this method updates the list of the node.
# Initially done only once.
self._update_nodetree_pernode()
# TODO(Isaac): Needs auto-update function enabled, once another
# function that updates node tree with maintaining
# collapse/expansion state. http://goo.gl/GuwYp can be a
# help.
self._collapse_button.pressed.connect(
self._node_selector_view.collapseAll)
self._expand_button.pressed.connect(self._node_selector_view.expandAll)
# Filtering preparation.
self._proxy_model = FilterChildrenModel(self)
self._proxy_model.setDynamicSortFilter(True)
self._proxy_model.setSourceModel(self._item_model)
self._node_selector_view.setModel(self._proxy_model)
self._filterkey_prev = ''
# This 1 line is needed to enable horizontal scrollbar. This setting
# isn't available in .ui file.
# Ref. http://stackoverflow.com/a/6648906/577001
self._node_selector_view.header().setSectionResizeMode(
QHeaderView.ResizeToContents)
# Setting slot for when user clicks on QTreeView.
self.selectionModel = self._node_selector_view.selectionModel()
# Note: self.selectionModel.currentChanged doesn't work to deselect
# a treenode as expected. Need to use selectionChanged.
self.selectionModel.selectionChanged.connect(
self._selection_changed_slot)
