Fixes popup being invisible forever after closing once (#6347)

holoviews/plotting/bokeh/callbacks.py

@@ -687,23 +687,22 @@ def _process_selection_event(self):
             if popup is not None:
                 break
 
-        if callable(popup):
+        popup_is_callable = callable(popup)
+        if popup_is_callable:
             with set_curdoc(self.plot.document):
                 popup = popup(**stream.contents)
 
-        # If no popup is defined, hide the panel
+        # If no popup is defined, hide the bokeh panel wrapper
         if popup is None:
             if self._panel.visible:
                 self._panel.visible = False
             return
 
-        if event is not None:
-            position = self._get_position(event)
-        else:
-            position = None
-
         popup_pane = panel(popup)
-        if not popup_pane.visible:
+        # offer the user ability to control when the popup bk panel shows up
+        # however, if the popup is not callable (singleton), we cannot do this
+        # check--else, it'll never re-appear if they set `visible=False` once
+        if popup_is_callable and not popup_pane.visible:
             return
 
         if not popup_pane.stylesheets:
@@ -724,6 +723,8 @@ def _process_selection_event(self):
         # otherwise, UnknownReferenceError: can't resolve reference 'p...'
         # meaning the popup has already been removed; we need to regenerate
         if self._existing_popup and not self._existing_popup.visible:
+            self._existing_popup.visible = True
+            position = self._get_position(event) if event else None
             if position:
                 self._panel.position = XY(**position)
                 if self.plot.comm:  # update Jupyter Notebook

holoviews/tests/ui/bokeh/test_callback.py

@@ -315,6 +315,11 @@ def popup_form(x, y):
     page.click(".bk-btn.bk-btn-default")
     expect(locator).not_to_be_visible()
 
+    hv_plot.click()
+    locator = page.locator(".bk-btn.bk-btn-default")
+    expect(locator).to_have_count(1)
+    expect(locator).to_be_visible()
+
 
 @skip_popup
 @pytest.mark.usefixtures("bokeh_backend")
@@ -346,6 +351,47 @@ def popup_form(index):
     expect(locator).to_have_count(1)
 
 
+@skip_popup
+@pytest.mark.usefixtures("bokeh_backend")
+def test_stream_popup_noncallable_reappear(serve_hv, points):
+    def popup_form(name):
+        text_input = pn.widgets.TextInput(name='Description')
+        button = pn.widgets.Button(
+            name='Save',
+            on_click=lambda _: layout.param.update(visible=False),
+            button_type="primary"
+        )
+        layout = pn.Column(f'# {name}', text_input, button)
+        return layout
+
+    points = points.opts(hit_dilation=5)
+    hv.streams.Tap(source=points, popup=popup_form('Tap'))
+    points.opts(tools=["tap"], active_tools=["tap"])
+
+    page = serve_hv(points)
+    hv_plot = page.locator('.bk-events')
+    expect(hv_plot).to_have_count(1)
+
+    hv_plot.click()
+
+    locator = page.locator("#tap")
+    expect(locator).to_have_count(1)
+    locator = page.locator(".bk-btn.bk-btn-primary")
+    expect(locator).to_have_count(1)
+    expect(locator).to_be_visible()
+
+    page.click(".bk-btn.bk-btn-primary")
+    expect(locator).not_to_be_visible()
+
+    hv_plot.click()
+
+    locator = page.locator("#tap")
+    expect(locator).to_have_count(1)
+    locator = page.locator(".bk-btn.bk-btn-primary")
+    expect(locator).to_have_count(1)
+    expect(locator).to_be_visible()
+
+
 @skip_popup
 @pytest.mark.usefixtures("bokeh_backend")
 def test_stream_popup_selection1d_lasso_select(serve_hv, points):