散景服务器 - 如何操纵回调函数中的选择

Question

我正在绘制几个按类别分组的补丁＆＃34; group＆＃34;在数据源中。我想要实现的目标如下：通过单击一个补丁，不仅补丁本身，而且同一组的所有补丁都应突出显示为选中。

我发现ColumnDataSource的属性已选中。但是，在回调函数中操作此属性不会产生所需的效果。

import os
from bokeh.models import ColumnDataSource, Patches
from bokeh.plotting import figure
from bokeh.layouts import row
from bokeh.io import output_file, curdoc
import pandas as pd

x = [[1,2,4], [3,5,6], [7,9,7], [5,7,6]]
y = [[4,2,1], [6,5,8], [3,9,6], [2,2,1]]
group = ['A', 'A', 'B', 'B']
id = [0,1,2,3]

df = pd.DataFrame(data=dict(x=x, y=y, group=group, id=id))
source = ColumnDataSource(df)

p = figure(tools="tap")

renderer = p.patches('x', 'y', source=source)

# Event handler
def my_tap_handler(attr,old,new):
    global source
    group_name = source.data['group'][new['1d']['indices'][0]]
    group_indices = df['id'][df['group'] == group_name]
    source.selected.indices = list(group_indices)
    print("source.selected.indices", source.selected.indices)


selected_patches = Patches(fill_color="#a6cee3")
renderer.selection_glyph = selected_patches

# Event
renderer.data_source.on_change("selected", my_tap_handler)

#######################################
# Set up layouts and add to document
curdoc().add_root(row(p, width=800))