Moved panes and widgets into subpackage

examples/user_guide/Panes.ipynb

@@ -7,8 +7,6 @@
    "outputs": [],
    "source": [
     "import panel as pn\n",
-    "import panel.vega\n",
-    "import panel.plotly\n",
     "\n",
     "pn.extension()"
    ]

panel/__init__.py

@@ -5,14 +5,12 @@
 import param as _param
 from bokeh.document import Document as _Document
 
-from . import holoviews # noqa
 from . import layout # noqa
+from . import links # noqa
+from . import pane # noqa
 from . import param # noqa
 from . import pipeline # noqa
-from . import plotly # noqa
-from . import vega # noqa
 from . import widgets # noqa
-from . import links # noqa
 
 from .interact import interact # noqa
 from .layout import Row, Column, Tabs, Spacer # noqa

panel/interact.py

@@ -11,10 +11,11 @@
 from __future__ import absolute_import, division, unicode_literals
 
 import types
-from numbers import Real, Integral
-from collections import OrderedDict
 
+from collections import OrderedDict
 from inspect import getcallargs
+from numbers import Real, Integral
+from six import string_types
 
 try:  # Python >= 3.3
     from inspect import signature, Parameter
@@ -37,7 +38,7 @@
 
 from .layout import Panel, Column, Row
 from .pane import PaneBase, Pane, HTML
-from .util import basestring, as_unicode
+from .util import as_unicode
 from .widgets import (Checkbox, TextInput, Widget, IntSlider, FloatSlider,
                       Select, DiscreteSlider, Button)
 
@@ -280,7 +281,7 @@ def widget_from_abbrev(cls, abbrev, name, default=empty):
     @staticmethod
     def widget_from_single_value(o, name):
         """Make widgets from single values, which can be used as parameter defaults."""
-        if isinstance(o, basestring):
+        if isinstance(o, string_types):
             return TextInput(value=as_unicode(o), name=name)
         elif isinstance(o, bool):
             return Checkbox(value=o, name=name)

panel/links.py

@@ -8,7 +8,7 @@
 import sys
 
 from .layout import Viewable, Panel
-from .holoviews import HoloViews, generate_panel_bokeh_map, is_bokeh_element_plot
+from .pane.holoviews import HoloViews, generate_panel_bokeh_map, is_bokeh_element_plot
 from .util import unicode_repr
 
 from bokeh.models import (CustomJS, Model as BkModel)

panel/models/__init__.py

@@ -0,0 +1,9 @@
+"""
+The models module defines custom bokeh models which extend upon the
+functionality that is provided in bokeh by default. The models are
+defined as pairs of Python classes and TypeScript models defined in .ts
+files.
+"""
+
+from .plots import PlotlyPlot, VegaPlot # noqa
+from .widgets import Audio, FileInput, Player # noqa

panel/models/plots.py

@@ -0,0 +1,39 @@
+"""
+Defines custom bokeh models to render external Javascript based plots. 
+"""
+import os
+
+from bokeh.core.properties import Dict, String, List, Any, Instance
+from bokeh.models import LayoutDOM, ColumnDataSource
+
+from ..util import CUSTOM_MODELS
+
+
+class PlotlyPlot(LayoutDOM):
+    """
+    A bokeh model that wraps around a plotly plot and renders it inside
+    a bokeh plot.
+    """
+
+    __implementation__ = os.path.join(os.path.abspath(os.path.dirname(__file__)), 'plotly.ts')
+
+    data = Dict(String, Any)
+
+    data_sources = List(Instance(ColumnDataSource))
+
+
+class VegaPlot(LayoutDOM):
+    """
+    A Bokeh model that wraps around a Vega plot and renders it inside
+    a Bokeh plot.
+    """
+
+    __implementation__ = os.path.join(os.path.abspath(os.path.dirname(__file__)), 'vega.ts')
+
+    data = Dict(String, Any)
+
+    data_sources = Dict(String, Instance(ColumnDataSource))
+
+
+CUSTOM_MODELS['panel.plotly.PlotlyPlot'] = PlotlyPlot
+CUSTOM_MODELS['panel.vega.VegaPlot'] = VegaPlot