Initial fixes for bokeh 0.12 compatibility

holoviews/plotting/bokeh/callbacks.py

@@ -1,19 +1,17 @@
 from collections import defaultdict
 
 import numpy as np
-from bokeh.models import CustomJS, TapTool, ColumnDataSource
-
-try:
-    from bokeh.protocol import serialize_json
-    bokeh_lt_011 = True
-except ImportError:
-    from bokeh.core.json_encoder import serialize_json
-    bokeh_lt_011 = False
-
 import param
 
 from ...core.data import ArrayColumns
-from .util import models_to_json
+from .renderer import bokeh_version
+from .util import models_to_json, bokeh_version
+
+from bokeh.models import CustomJS, TapTool, ColumnDataSource
+if bokeh_version < '0.11':
+    from bokeh.protocol import serialize_json
+else:
+    from bokeh.core.json_encoder import serialize_json
 
 
 class Callback(param.ParameterizedFunction):
@@ -152,7 +150,7 @@ def serialize(self, objects):
         Serializes any Bokeh plot objects passed to it as a list.
         """
         data = dict(data=models_to_json(objects))
-        if not bokeh_lt_011:
+        if bokeh_version >= '0.11':
             plot = self.plots[0]
             data['root'] = plot.state._id
         return serialize_json(data)

holoviews/plotting/bokeh/element.py

@@ -23,8 +23,7 @@
 from ..util import dynamic_update
 from .callbacks import Callbacks
 from .plot import BokehPlot
-from .renderer import bokeh_lt_011
-from .util import mpl_to_bokeh, convert_datetime, update_plot
+from .util import bokeh_version, mpl_to_bokeh, convert_datetime, update_plot
 
 
 # Define shared style properties for bokeh plots
@@ -281,14 +280,12 @@ def _plot_properties(self, key, plot, element):
         """
         Returns a dictionary of plot properties.
         """
-        title_font = self._fontsize('title', 'title_text_font_size')
-        plot_props = dict(plot_height=self.height, plot_width=self.width,
-                          title_text_color='black', **title_font)
+        plot_props = dict(plot_height=self.height, plot_width=self.width)
         if self.show_title:
             plot_props['title'] = self._format_title(key, separator=' ')
         if self.bgcolor:
             bg_attr = 'background_fill'
-            if not bokeh_lt_011: bg_attr += '_color'
+            if bokeh_version > '0.11': bg_attr += '_color'
             plot_props[bg_attr] = self.bgcolor
         if self.border is not None:
             for p in ['left', 'right', 'top', 'bottom']:
@@ -679,7 +676,7 @@ def _process_legend(self):
         if legend_fontsize:
             plot.legend[0].label_text_font_size = legend_fontsize
 
-        if bokeh_lt_011:
+        if bokeh_version < '0.11':
             plot.legend.orientation = self.legend_position
         else:
             plot.legend.location = self.legend_position

holoviews/plotting/bokeh/plot.py

@@ -15,7 +15,11 @@
 from ..plot import DimensionedPlot, GenericCompositePlot, GenericLayoutPlot
 from ..util import get_dynamic_mode, initialize_sampled
 from .renderer import BokehRenderer
-from .util import layout_padding
+from .util import bokeh_version, layout_padding
+
+if bokeh_version >= '0.12':
+    from bokeh.layouts import gridplot
+
 
 class BokehPlot(DimensionedPlot):
     """
@@ -261,7 +265,10 @@ def initialize_plot(self, ranges=None, plots=[]):
             else:
                 plots[r].append(None)
                 passed_plots.append(None)
-        self.handles['plot'] = BokehGridPlot(children=plots[::-1])
+        if bokeh_version < '0.12':
+            self.handles['plot'] = BokehGridPlot(children=plots[::-1])
+        else:
+            self.handles['plot'] = gridplot(plots[::-1])
         self.handles['plots'] = plots
         if self.shared_datasource:
             self.sync_sources()
@@ -481,7 +488,7 @@ def initialize_plot(self, ranges=None):
 
         # Replace None types with empty plots
         # to avoid bokeh bug
-        if adjoined:
+        if adjoined and bokeh_version < '0.12':
             plots = layout_padding(plots)
 
         # Determine the most appropriate composite plot type
@@ -496,6 +503,8 @@ def initialize_plot(self, ranges=None):
                       for c, child in enumerate(row)
                       if child is not None]
             layout_plot = Tabs(tabs=panels)
+        elif bokeh_version >= '0.12':
+            layout_plot = gridplot(children=plots)
         elif len(plots) == 1 and not adjoined:
             layout_plot = VBox(children=[HBox(children=plots[0])])
         elif len(plots[0]) == 1:

holoviews/plotting/bokeh/renderer.py

@@ -1,23 +1,23 @@
 import uuid
+
 from ...core import Store, HoloMap
 from ..renderer import Renderer, MIME_TYPES
 from .widgets import BokehScrubberWidget, BokehSelectionWidget
-from .util import models_to_json
+from .util import bokeh_version, models_to_json
 
 import param
 from param.parameterized import bothmethod
 
+import bokeh
 from bokeh.embed import notebook_div
 from bokeh.io import load_notebook
 from bokeh.resources import CDN, INLINE
 
-try:
+if bokeh_version < '0.11':
     from bokeh.protocol import serialize_json
-    bokeh_lt_011 = True
-except ImportError:
+else:
     from bokeh.core.json_encoder import serialize_json
     from bokeh.model import _ModelInDocument as add_to_document
-    bokeh_lt_011 = False
 
 
 class BokehRenderer(Renderer):
@@ -55,20 +55,20 @@ def __call__(self, obj, fmt=None):
             return plot(), info
         elif fmt == 'html':
             html = self.figure_data(plot)
-            html = '<center>%s</center>' % html
+            html = "<div style='display: table; margin: 0 auto;'>%s</div>" % html
             return self._apply_post_render_hooks(html, obj, fmt), info
         elif fmt == 'json':
             plotobjects = [h for handles in plot.traverse(lambda x: x.current_handles)
                            for h in handles]
             data = dict(data=[])
-            if not bokeh_lt_011:
+            if bokeh_version >= '0.11':
                 data['root'] = plot.state._id
             data['data'] = models_to_json(plotobjects)
             return self._apply_post_render_hooks(serialize_json(data), obj, fmt), info
 
 
     def figure_data(self, plot, fmt='html', **kwargs):
-        if not bokeh_lt_011:
+        if bokeh_version >= '0.11':
             doc_handler = add_to_document(plot.state)
             with doc_handler:
                 doc = doc_handler._doc

holoviews/plotting/bokeh/util.py

@@ -1,25 +1,27 @@
+from distutils.version import LooseVersion
+
 from collections import defaultdict
 import numpy as np
-from ...core.options import abbreviated_exception
 
 try:
     from matplotlib import colors
     import matplotlib.cm as cm
 except ImportError:
     cm, colors = None, None
 
-try:
+import bokeh
+bokeh_version = LooseVersion(bokeh.__version__)
+if bokeh_version < '0.11':
     from bokeh.enums import Palette
     from bokeh.plotting import Plot
-    bokeh_lt_011 = True
-except:
+else:
     from bokeh.core.enums import Palette
     from bokeh.models.plots import Plot
-    bokeh_lt_011 = False
-
 from bokeh.models import GlyphRenderer
 from bokeh.plotting import Figure
 
+from ...core.options import abbreviated_exception
+
 # Conversion between matplotlib and bokeh markers
 markers = {'s': {'marker': 'square'},
            'd': {'marker': 'diamond'},

holoviews/plotting/bokeh/widgets.py

@@ -1,18 +1,14 @@
 import json
-from distutils.version import LooseVersion
+
+from .util import bokeh_version
+from ..widgets import NdWidget, SelectionWidget, ScrubberWidget
 
 import param
 import bokeh
 from bokeh.io import Document
-
-if LooseVersion(bokeh.__version__) >= LooseVersion('0.11'):
-    bokeh_lt_011 = False
+if bokeh_version >= '0.11':
     from bokeh.io import _CommsHandle
     from bokeh.util.notebook import get_comms
-else:
-    bokeh_lt_011 = True
-
-from ..widgets import NdWidget, SelectionWidget, ScrubberWidget
 
 
 class BokehWidget(NdWidget):
@@ -43,7 +39,7 @@ def _plot_figure(self, idx, fig_format='json'):
         first call and
         """
         self.plot.update(idx)
-        if self.embed or fig_format == 'html' or bokeh_lt_011:
+        if self.embed or fig_format == 'html' or bokeh_version < '0.11':
             return self.renderer.html(self.plot, fig_format)
         else:
             doc = self.plot.document