def on_key_press(self, event):
#print('you pressed ', event.key)
if event.key in ('pagedown', ' ', 'right'):
self.inc_i()
elif event.key in ('pageup', 'backspace', 'left'):
self.dec_i()
elif event.key in self.keymap:
newlabel = self.keymap[event.key]
self.opstack.push(Update(self.i, 'name', newlabel))
self.inc_i()
elif event.key in ('ctrl+i', 'down'):
if self.N_points > 5000:
self.N_points -= 5000
self.update_plot_data()
elif event.key in ('ctrl+o', 'up'):
self.N_points += 5000
self.update_plot_data()
elif event.key == 'ctrl+s':
self.save()
elif event.key == 'ctrl+h':
print(help_string)
elif event.key in ('ctrl+m', 'ctrl+backspace') and self.i > 0:
self.i -= 1
self.opstack.push(Merge(self.i))
self.inc_i()
elif event.key in ('ctrl+x', 'tab'):
self.opstack.push(Delete(self.i))
if self.i >= len(self.opstack.events):
self.i = len(self.opstack.events) - 1
self.update_plot_data()
elif event.key == 'ctrl+z' and self.opstack.ops:
self.opstack.undo()
self.i = self.opstack.undo_ops[-1].index
self.update_plot_data()
elif event.key == 'ctrl+y' and self.opstack.undo_ops:
self.opstack.redo()
self.i = self.opstack.ops[-1].index
self.update_plot_data()
def delete(self):
self.opstack.push(Delete(self.label_index))
if self.label_index >= len(self.opstack.events):
self.label_index = len(self.opstack.events) - 1
self.update_plot_data()
def test_delete(labels):
Delete(0).on(labels)
assert labels[0]['name'] == 'b'