Bundle plotly.js in html for iframe renderer for chrome compatibility

Add iframe_connected renderer to load plotly.js from CDN.

Author: jonmmease

packages/python/plotly/plotly/io/_base_renderers.py

@@ -525,13 +525,19 @@ class IFrameRenderer(MimetypeRenderer):
     """
 
     def __init__(
-        self, config=None, auto_play=False, post_script=None, animation_opts=None
+        self,
+        config=None,
+        auto_play=False,
+        post_script=None,
+        animation_opts=None,
+        include_plotlyjs=True,
     ):
 
         self.config = config
         self.auto_play = auto_play
         self.post_script = post_script
         self.animation_opts = animation_opts
+        self.include_plotlyjs = include_plotlyjs
 
     def to_mimebundle(self, fig_dict):
         from plotly.io import write_html
@@ -567,7 +573,7 @@ def to_mimebundle(self, fig_dict):
             filename,
             config=self.config,
             auto_play=self.auto_play,
-            include_plotlyjs="directory",
+            include_plotlyjs=self.include_plotlyjs,
             include_mathjax="cdn",
             auto_open=False,
             post_script=self.post_script,

packages/python/plotly/plotly/io/_renderers.py

@@ -423,7 +423,8 @@ def show(fig, renderer=None, validate=True, **kwargs):
 renderers["firefox"] = BrowserRenderer(config=config, using="firefox")
 renderers["chrome"] = BrowserRenderer(config=config, using="chrome")
 renderers["chromium"] = BrowserRenderer(config=config, using="chromium")
-renderers["iframe"] = IFrameRenderer(config=config)
+renderers["iframe"] = IFrameRenderer(config=config, include_plotlyjs=True)
+renderers["iframe_connected"] = IFrameRenderer(config=config, include_plotlyjs="cdn")
 
 # Set default renderer
 # --------------------