Adds Bokeh 3.5 enhancements to RangeToolLink (#6341)

holoviews/plotting/bokeh/links.py

@@ -13,7 +13,7 @@
     VertexTableLink,
 )
 from ..plot import GenericElementPlot, GenericOverlayPlot
-from .util import bokeh34
+from .util import bokeh34, bokeh35
 
 
 class LinkCallback:
@@ -182,6 +182,23 @@ def __init__(self, root_model, link, source_plot, target_plot):
                     ax.reset_end = end
 
         tool = RangeTool(**axes)
+
+        if bokeh35:
+            use_handles = getattr(link, 'use_handles', True)
+            start_gesture = getattr(link, 'start_gesture', 'tap')
+            inverted = getattr(link, 'inverted', True)
+
+            tool.overlay.use_handles = use_handles
+            tool.start_gesture = start_gesture
+            tool.overlay.inverted = inverted
+
+            if use_handles:
+                tool.overlay.handles.all.hover_fill_color = "grey"
+                tool.overlay.handles.all.hover_fill_alpha = 0.25
+                tool.overlay.handles.all.hover_line_alpha = 0
+                tool.overlay.handles.all.fill_alpha = 0.1
+                tool.overlay.handles.all.line_alpha = 0.25
+
         source_plot.state.add_tools(tool)
         if toolbars:
             toolbars[0].tools.append(tool)

holoviews/plotting/links.py

@@ -115,8 +115,17 @@ class RangeToolLink(Link):
     intervalsy = param.Tuple(default=None, length=2, doc="""
         (min, max) intervals for the y-axis""")
 
-    _requires_target = True
+    use_handles = param.Boolean(default=True, doc="""
+        Whether to display handles. Only available from Bokeh 3.5 onwards.""")
+
+    start_gesture = param.Selector(default='tap', objects=['pan', 'tap', 'none'],
+         doc="Gesture to start a range selection. Only available from Bokeh 3.5 onwards.")
 
+    inverted = param.Boolean(default=True, doc="""
+         Whether to invert the highlighting of the range selection.
+         Only available from Bokeh 3.5 onwards.""")
+
+    _requires_target = True
 
 class DataLink(Link):
     """

pixi.toml

@@ -40,6 +40,7 @@ plotly = ">=4.0"
 
 [feature.py39.dependencies]
 python = "3.9.*"
+panel = "1.4.*"
 
 [feature.py310.dependencies]
 python = "3.10.*"