13947 FIX Add blank seperator to dashboard tooltips

On some dashboard tooltips there was a space missing between the two words of the tootltip.
It is now correctly sperated.
For example, the tooltip will now display "Namespace my-namespace" instead of "Namespacemy-namespace".

Change-Id: I4079eb836d0f6c84c0c14cf0a798bed66ab14c91

.werks/13947

+Title: Add blank seperator to dashboard tooltips
+Class: fix
+Compatible: compat
+Component: multisite
+Date: 1652262782
+Edition: cre
+Knowledge: doc
+Level: 1
+State: unknown
+Version: 2.2.0i1
+
+On some dashboard tooltips there was a space missing between the two words of the tootltip.
+It is now correctly sperated.
+For example, the tooltip will now display "Namespace my-namespace" instead of "Namespacemy-namespace".

cmk/gui/plugins/views/utils.py

@@ -2219,7 +2219,7 @@ class Cell:
             tooltip_cell = Cell(self._view, PainterSpec(self.tooltip_painter_name()))
             _tooltip_tdclass, tooltip_content = tooltip_cell.render_content(row)
             assert not isinstance(tooltip_content, Mapping)
-            tooltip_text = escaping.strip_tags(tooltip_content)
+            tooltip_text = escaping.strip_tags_for_tooltip(tooltip_content)
             if tooltip_text:
                 content = HTMLWriter.render_span(content, title=tooltip_text)
 

cmk/gui/utils/escaping.py

@@ -283,3 +283,16 @@ def strip_tags(ht: EscapableEntity) -> str:
         string = _TAG_RE.sub("", string)
         if string == prev:
             return string
+
+
+def strip_tags_for_tooltip(ht: EscapableEntity) -> str:
+    string = str(ht)
+    # Some painters render table and cell tags that would be stripped away in the next step and
+    # result in the content of tables being joined together to a single word.
+    # We replace the tags here with spaces to prevent that.
+    #
+    # For the moment we keep it simple and only fix the special case we stumbled upon.
+    # In the future it might be better to find a more generic approach
+    # that solves the problem for different tag combinations.
+    string = string.replace("</th><td>", " ")
+    return strip_tags(string)