Simplify colorbar using the same technique as html_image()

Moving common code into html_colorbar() helper function.

Author: kvid

src/wireviz/Harness.py

@@ -8,7 +8,7 @@
 from wireviz.wv_helper import awg_equiv, mm2_equiv, tuplelist2tsv, \
     nested_html_table, flatten2d, index_if_list, html_line_breaks, \
     graphviz_line_breaks, remove_line_breaks, open_file_read, open_file_write, \
-    html_image, html_caption, manufacturer_info_field
+    html_colorbar, html_image, html_caption, manufacturer_info_field
 from collections import Counter
 from typing import List
 from pathlib import Path
@@ -96,17 +96,13 @@ def create_graph(self) -> Graph:
                     [html_line_breaks(connector.type),
                      html_line_breaks(connector.subtype),
                      f'{connector.pincount}-pin' if connector.show_pincount else None,
-                     connector.color, '<!-- colorbar -->' if connector.color else None],
+                     connector.color, html_colorbar(connector.color)],
                     '<!-- connector table -->' if connector.style != 'simple' else None,
                     [html_image(connector)],
                     [html_caption(connector)],
                     [html_line_breaks(connector.notes)]]
             html.extend(nested_html_table(rows))
 
-            if connector.color: # add color bar next to color info, if present
-                colorbar = f' bgcolor="{wv_colors.translate_color(connector.color, "HEX")}" width="4"></td>' # leave out '<td' from string to preserve any existing attributes of the <td> tag
-                html = [row.replace('><!-- colorbar --></td>', colorbar) for row in html]
-
             if connector.style != 'simple':
                 pinhtml = []
                 pinhtml.append('<table border="0" cellspacing="0" cellpadding="3" cellborder="1">')
@@ -173,17 +169,13 @@ def create_graph(self) -> Graph:
                      f'{cable.gauge} {cable.gauge_unit}{awg_fmt}' if cable.gauge else None,
                      '+ S' if cable.shield else None,
                      f'{cable.length} m' if cable.length > 0 else None,
-                     cable.color, '<!-- colorbar -->' if cable.color else None],
+                     cable.color, html_colorbar(cable.color)],
                     '<!-- wire table -->',
                     [html_image(cable)],
                     [html_caption(cable)],
                     [html_line_breaks(cable.notes)]]
             html.extend(nested_html_table(rows))
 
-            if cable.color: # add color bar next to color info, if present
-                colorbar = f' bgcolor="{wv_colors.translate_color(cable.color, "HEX")}" width="4"></td>' # leave out '<td' from string to preserve any existing attributes of the <td> tag
-                html = [row.replace('><!-- colorbar --></td>', colorbar) for row in html]
-
             wirehtml = []
             wirehtml.append('<table border="0" cellspacing="0" cellborder="0">')  # conductor table
             wirehtml.append('<tr><td>&nbsp;</td></tr>')

src/wireviz/wv_helper.py

@@ -1,6 +1,7 @@
 #!/usr/bin/env python3
 # -*- coding: utf-8 -*-
 
+from wireviz import wv_colors
 from typing import List
 
 awg_equiv_table = {
@@ -55,6 +56,9 @@ def nested_html_table(rows):
     html.append('</table>')
     return html
 
+def html_colorbar(color):
+    return f'<tdX bgcolor="{wv_colors.translate_color(color, "HEX")}" width="4">' if color else None
+
 def html_image(node):
     if not node.image:
         return None