Minor fixes

Editor indentation and equity chart

src/nailab/ui/equitychartcanvas.py

@@ -9,11 +9,10 @@ import matplotlib.pyplot as plt
 
 class EquityChartCanvas(FigureCanvas):
     def __init__(self, parent=None, width=5, height=4, dpi=100):
-        fig = Figure(figsize=(width, height), dpi=dpi)
+        self.fig = Figure(figsize=(width, height), dpi=dpi)
-        self.axes = fig.add_subplot(111)
         self.pnl_data = None
 
-        FigureCanvas.__init__(self, fig)
+        FigureCanvas.__init__(self, self.fig)
         self.setParent(parent)
 
     def set_data(self, cumulative_pnl):
@@ -21,6 +20,8 @@ class EquityChartCanvas(FigureCanvas):
         self.plot()
 
     def plot(self):
+        self.fig.clear()
+        self.axes = self.fig.add_subplot(111)
         if self.pnl_data is not None:
             ax = self.figure.add_subplot(111)
             ax.plot(self.pnl_data, 'r-')

src/nailab/ui/mainwindow.py

@@ -32,7 +32,6 @@ class MainWindow(QtWidgets.QMainWindow):
 
     def savedChanged(self):
         for i in range(0, self.ui.tabs.count()):
-            print(i, self.ui.tabs.widget(i).is_saved())
             self.update_tab_name(i)
 
     def newStrategy(self):

src/nailab/ui/strategywidget.py

@@ -57,6 +57,10 @@ class StrategyWidget(QtWidgets.QWidget):
         if content is not None:
             self.ui.editor.setText(content)
 
+        self.ui.editor.setIndentationsUseTabs(False)
+        self.ui.editor.setTabWidth(4)
+        self.ui.editor.setAutoIndent(True)
+
         self.source_file = source_file
         if self.source_file is not None:
             self.saved = True