Merge pull request #4903 from aturanjanin/owcorrespondence

CorrespondenceAnalysis: data info displayed in the status bar

Orange/widgets/unsupervised/owcorrespondence.py

@@ -16,6 +16,7 @@
 from Orange.widgets.utils import itemmodels, colorpalettes
 from Orange.widgets.utils.itemmodels import select_rows
 from Orange.widgets.utils.widgetpreview import WidgetPreview
+from Orange.widgets.utils.state_summary import format_summary_details
 
 from Orange.widgets.visualize.owscatterplotgraph import ScatterPlotItem
 from Orange.widgets.widget import Input, Output
@@ -61,6 +62,9 @@ def __init__(self):
         self.component_x = 0
         self.component_y = 1
 
+        self._set_input_summary(None)
+        self._set_output_summary(None)
+
         box = gui.vBox(self.controlArea, "Variables")
         self.varlist = itemmodels.VariableListModel()
         self.varview = view = ListViewSearch(
@@ -106,6 +110,7 @@ def set_data(self, data):
             data = None
 
         self.data = data
+        self._set_input_summary(self.data)
         if data is not None:
             self.varlist[:] = [var for var in data.domain.variables
                                if var.is_discrete]
@@ -145,6 +150,7 @@ def commit(self):
                               StringVariable("Value")]),
                 rf, metas=vars_data
             )
+        self._set_output_summary(output_table)
         self.Outputs.coordinates.send(output_table)
 
     def clear(self):
@@ -153,6 +159,16 @@ def clear(self):
         self.plot.clear()
         self.varlist[:] = []
 
+    def _set_input_summary(self, data):
+        summary = len(data) if data else self.info.NoInput
+        details = format_summary_details(data) if data else ""
+        self.info.set_input_summary(summary, details)
+
+    def _set_output_summary(self, output):
+        summary = len(output) if output else self.info.NoOutput
+        details = format_summary_details(output) if output else ""
+        self.info.set_output_summary(summary, details)
+
     def selected_vars(self):
         rows = sorted(
             ind.row() for ind in self.varview.selectionModel().selectedRows())

Orange/widgets/unsupervised/tests/test_owcorrespondence.py

@@ -1,9 +1,10 @@
 # Test methods with long descriptive names can omit docstrings
-# pylint: disable=missing-docstring
+# pylint: disable=missing-docstring, protected-access
 from Orange.data import Table, Domain, DiscreteVariable, ContinuousVariable
 from Orange.widgets.tests.base import WidgetTest
 from Orange.widgets.unsupervised.owcorrespondence \
     import OWCorrespondenceAnalysis, select_rows
+from Orange.widgets.utils.state_summary import format_summary_details
 
 
 class TestOWCorrespondence(WidgetTest):
@@ -89,3 +90,24 @@ def test_outputs(self):
                               (8, 8))
         self.send_signal(self.widget.Inputs.data, None)
         self.assertIsNone(self.get_output(w.Outputs.coordinates), None)
+
+    def test_summary(self):
+        """Check if the status bar updates when data on input"""
+        info = self.widget.info
+        no_input, no_output = "No data on input", "No data on output"
+
+        self.send_signal(self.widget.Inputs.data, self.data)
+        summary, details = f"{len(self.data)}", format_summary_details(
+            self.data)
+        self.assertEqual(info._StateInfo__input_summary.brief, summary)
+        self.assertEqual(info._StateInfo__input_summary.details, details)
+        output = self.get_output(self.widget.Outputs.coordinates)
+        summary, details = f"{len(output)}", format_summary_details(output)
+        self.assertEqual(info._StateInfo__output_summary.brief, summary)
+        self.assertEqual(info._StateInfo__output_summary.details, details)
+
+        self.send_signal(self.widget.Inputs.data, None)
+        self.assertEqual(info._StateInfo__input_summary.brief, "")
+        self.assertEqual(info._StateInfo__input_summary.details, no_input)
+        self.assertEqual(info._StateInfo__output_summary.brief, "")
+        self.assertEqual(info._StateInfo__output_summary.details, no_output)