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bokeh_interactive.html
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<html><head>
<title>Bokeh Example</title>
<meta charset="iso-8859-1">
<link rel="icon" type="image/x-icon" href="./favicon.png">
<script type="text/javascript" src="https://cdn.bokeh.org/bokeh/release/bokeh-2.4.2.js"></script>
<script type="text/javascript" src="https://cdn.bokeh.org/bokeh/release/bokeh-gl-2.4.2.min.js"></script>
<script type="text/javascript" src="https://cdn.bokeh.org/bokeh/release/bokeh-widgets-2.4.2.min.js"></script>
<script type="text/javascript" src="https://cdn.bokeh.org/bokeh/release/bokeh-tables-2.4.2.min.js"></script>
<script type="text/javascript" src="https://cdn.bokeh.org/bokeh/release/bokeh-mathjax-2.4.2.min.js"></script>
<script type="text/javascript">
Bokeh.set_log_level("info");
</script>
<link rel="stylesheet" href="../build/pyscript.css" />
<script defer src="../build/pyscript.js"></script>
</head>
<body>
<py-env>
- bokeh
- numpy
</py-env>
<h1>Bokeh Example</h1>
<div id="myplot"></div>
<py-script id="main">
import asyncio
import json
import pyodide
from js import Bokeh, console, JSON
from bokeh import __version__
from bokeh.document import Document
from bokeh.embed.util import OutputDocumentFor, standalone_docs_json_and_render_items
from bokeh.models import Slider, Div
from bokeh.layouts import Row
from bokeh.protocol.messages.patch_doc import process_document_events
# create a new plot with default tools, using figure
p = Slider(start=0.1, end=10, value=1, step=.1, title="Amplitude")
div = Div(text=f'Amplitude is: {p.value}')
def callback(attr, old, new):
div.text = f'Amplitude is: {new}'
p.on_change('value', callback)
row = Row(children=[p, div])
def doc_json(model, target):
with OutputDocumentFor([model]) as doc:
doc.title = ""
docs_json, _ = standalone_docs_json_and_render_items(
[model], suppress_callback_warning=True
)
doc_json = list(docs_json.values())[0]
root_id = doc_json['roots']['root_ids'][0]
return doc, json.dumps(dict(
target_id = target,
root_id = root_id,
doc = doc_json,
version = __version__,
))
def _link_docs(pydoc, jsdoc):
def jssync(event):
if getattr(event, 'setter_id', None) is not None:
return
events = [event]
json_patch = jsdoc.create_json_patch_string(pyodide.to_js(events))
pydoc.apply_json_patch(json.loads(json_patch))
jsdoc.on_change(pyodide.create_proxy(jssync), pyodide.to_js(False))
def pysync(event):
json_patch, buffers = process_document_events([event], use_buffers=True)
buffer_map = {}
for (ref, buffer) in buffers:
buffer_map[ref['id']] = buffer
jsdoc.apply_json_patch(JSON.parse(json_patch), pyodide.to_js(buffer_map), setter_id='js')
pydoc.on_change(pysync)
async def show(plot, target):
pydoc, model_json = doc_json(plot, target)
views = await Bokeh.embed.embed_item(JSON.parse(model_json))
jsdoc = views[0].model.document
_link_docs(pydoc, jsdoc)
await show(row, 'myplot')
</py-script>
</body>
</html>