Add interactive bokeh example

philippjfr · philippjfr · commit 079d33e034dc · 2022-04-08T23:00:09.000+02:00
diff --git a/pyscriptjs/public/bokeh_interactive.html b/pyscriptjs/public/bokeh_interactive.html
@@ -0,0 +1,98 @@
+<html><head>
+    <title>Bokeh Example</title>
+    <meta charset="iso-8859-1">
+    <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>
+import json
+import pyodide
+
+from js import Bokeh, console, JSON
+
+import bokeh
+
+from bokeh.document import Document
+from bokeh.embed.util import OutputDocumentFor, standalone_docs_json
+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])
+
+print("about to embed")
+
+def doc_json(model, target):
+    with OutputDocumentFor([model]) as doc:
+        doc.title = ""
+        docs_json = standalone_docs_json([model])
+
+    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   = bokeh.__version__,
+    ))
+
+def link_docs(pydoc, jsdoc):
+
+    def jssync(event):
+        if (event.setter_id 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 = process_document_events([event], use_buffers=False)[0]
+
+        jsdoc.apply_json_patch(JSON.parse(json_patch), {}, 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))
+    print("Done embedding...")
+    jsdoc = views[0].model.document
+    link_docs(pydoc, jsdoc)
+
+pyscript.run_until_complete(show(row, 'myplot'))
+
+    </py-script>
+    
+</body>
+</html>
