Considering the following example from bokeh, how can I make the hover toolbox persist after double clicking on the corresponding circle? I want to be able to visualize hovertool tips over multiple circles at same time. Also double-clicking again should make the persisting hovertool box vanish.
from bokeh.plotting import ColumnDataSource, figure, output_file, show
output_file("toolbar.html")
source = ColumnDataSource(data=dict(
x=[1, 2, 3, 4, 5],
y=[2, 5, 8, 2, 7],
desc=['A', 'b', 'C', 'd', 'E'],
imgs=[
'https://docs.bokeh.org/static/snake.jpg',
'https://docs.bokeh.org/static/snake2.png',
'https://docs.bokeh.org/static/snake3D.png',
'https://docs.bokeh.org/static/snake4_TheRevenge.png',
'https://docs.bokeh.org/static/snakebite.jpg'
],
fonts=[
'<i>italics</i>',
'<pre>pre</pre>',
'<b>bold</b>',
'<small>small</small>',
'<del>del</del>'
]
))
TOOLTIPS = """
<div>
<div>
<img
src="@imgs" height="42" alt="@imgs" width="42"
style="float: left; margin: 0px 15px 15px 0px;"
border="2"
></img>
</div>
<div>
<span style="font-size: 17px; font-weight: bold;">@desc</span>
<span style="font-size: 15px; color: #966;">[$index]</span>
</div>
<div>
<span>@fonts{safe}</span>
</div>
<div>
<span style="font-size: 15px;">Location</span>
<span style="font-size: 10px; color: #696;">($x, $y)</span>
</div>
</div>
"""
p = figure(plot_width=400, plot_height=400, tooltips=TOOLTIPS,
title="Mouse over the dots")
p.circle('x', 'y', size=20, source=source)
show(p)