added shortcut for plotting; make "normal" plot if only one selected; dont crash if nothing selected

grum/mainwin.py

@@ -1,5 +1,6 @@
 from PyQt5.QtCore import Qt, pyqtSignal
-from PyQt5.QtWidgets import QMainWindow, QSplitter
+from PyQt5.QtGui import QKeySequence
+from PyQt5.QtWidgets import QMainWindow, QSplitter, QShortcut
 
 from . import assets
 from .dictlist import DictList
@@ -28,6 +29,9 @@ class MainWindow(QMainWindow):
         lst_menu.addSeparator()
         lst_menu.addAction("Plot selected", self.on_plot_selected)
 
+        plot_shortcut = QShortcut(QKeySequence("Ctrl+P"), self)
+        plot_shortcut.activated.connect(self.on_plot_selected)
+
         bar = self.menuBar()
 
         self.menu_settings = menu = BarMenu(bar, "&Settings")
@@ -88,6 +92,12 @@ class MainWindow(QMainWindow):
 
     def on_plot_selected(self):
         selected = self.lst.selectedItems()
+        if not selected:
+            return
+        if len(selected) == 1:
+            item = selected[0]
+            self.on_make_new_plot(item.key, item.value)
+            return
         pairs = ((i.key, i.value) for i in selected)
         names, descs = zip(*pairs)
         sub = MDISubMultiPlot(names, descs)