Rebase onto master. Added deply script to unused files folder

src/double_text_button.py

@@ -0,0 +1,59 @@
+from PyQt5.QtWidgets import QPushButton
+from PyQt5.QtCore import pyqtSlot
+
+
+class DoubleTextButton(QPushButton):
+    """Subclass QPushButton.
+
+    A click will deactivate/activate a series of 'slave' widgets depending
+    on the 'checked' status of the button."""
+
+    def __init__(self, parent=None):
+        """Extends QPushButton.__init__."""
+        super().__init__(parent)
+        self.clicked.connect(self._manage_click)
+
+    def set_texts(self, text_a, text_b):
+        """Set the two texts to be displayed."""
+        self._text_a = text_a
+        self._text_b = text_b
+
+    def set_slave_filters(self, simple_ones=None,
+                          radio_1=None,
+                          ruled_by_radio_1=None,
+                          radio_2=None,
+                          ruled_by_radio_2=None):
+        """Set all the 'slave' widgets.
+
+        Keyword arguments:
+        simple_ones -- a list of widgets.
+        radio_1 -- a radio button.
+        ruled_by_radio_1 -- a list of widgets whose status depend upon radio_1.
+        radio_2 -- a radio button.
+        ruled_by_radio_2 -- a list of widgets whose status depend upon radio_2."""
+        self._simple_ones = simple_ones
+        self._ruled_by_radio_1 = ruled_by_radio_1
+        self._radio_1 = radio_1
+        self._ruled_by_radio_2 = ruled_by_radio_2
+        self._radio_2 = radio_2
+
+    @pyqtSlot()
+    def _manage_click(self):
+        """Set the status of all the 'slave widgets' based on the status of the instance."""
+        if self.isChecked():
+            self.setText(self._text_b)
+            enable = False
+        else:
+            self.setText(self._text_a)
+            enable = True
+        for f in self._simple_ones:
+            f.setEnabled(enable)
+        radio_btns = self._radio_1, self._radio_2
+        ruled_widgets = self._ruled_by_radio_1, self._ruled_by_radio_2
+        for radio_btn, ruled_by in zip(radio_btns, ruled_widgets):
+            if ruled_by:
+                for f in ruled_by:
+                    if radio_btn.isChecked():
+                        f.setEnabled(enable)
+                    else:
+                        f.setEnabled(False)