From f72e72c92cfb9ddbb3490efc207a1c8766d4f753 Mon Sep 17 00:00:00 2001
From: Ed_ <edwardgz@gmail.com>
Date: Wed, 3 Jun 2026 11:08:58 -0400
Subject: [PATCH] feat(markdown): implement table rendering with
 imgui.begin_table

---
 src/markdown_table.py               | 20 ++++++++++++++++++++
 tests/test_markdown_table_render.py | 20 ++++++++++++++++++++
 2 files changed, 40 insertions(+)
 create mode 100644 tests/test_markdown_table_render.py

diff --git a/src/markdown_table.py b/src/markdown_table.py
index dfcccd84..96bf56a2 100644
--- a/src/markdown_table.py
+++ b/src/markdown_table.py
@@ -1,8 +1,28 @@
 import re
 from dataclasses import dataclass
+from imgui_bundle import imgui
 
 _TABLE_SEPARATOR = re.compile(r"^\|?\s*:?-{2,}:?\s*(\|\s*:?-{2,}:?\s*)+\|?\s*$")
 
+def render_table(block: "TableBlock") -> None:
+ """Render a GFM table block via imgui.begin_table.
+ [C: src/markdown_helper.py:MarkdownRenderer.render]
+ """
+ n_cols = len(block.headers)
+ if n_cols == 0: return
+ flags = imgui.TableFlags_.borders | imgui.TableFlags_.row_bg | imgui.TableFlags_.resizable
+ if not imgui.begin_table("md_table", n_cols, flags): return
+ imgui.table_headers_row()
+ for h in block.headers:
+  imgui.table_next_column()
+  imgui.text(h)
+ for row in block.rows:
+  imgui.table_next_row()
+  for c in row:
+   imgui.table_next_column()
+   imgui.text(c)
+ imgui.end_table()
+
 @dataclass(frozen=True)
 class TableBlock:
  """Frozen GFM table block.
diff --git a/tests/test_markdown_table_render.py b/tests/test_markdown_table_render.py
new file mode 100644
index 00000000..b78971ee
--- /dev/null
+++ b/tests/test_markdown_table_render.py
@@ -0,0 +1,20 @@
+from unittest.mock import patch
+from src.markdown_table import parse_tables, render_table, TableBlock
+
+def test_render_table_invokes_begin_table(app_instance):
+ with patch("src.markdown_table.imgui") as mock_imgui:
+  mock_imgui.TableFlags_ = type("T", (), {"borders": 1, "row_bg": 2, "resizable": 4})()
+  mock_imgui.begin_table.return_value = True
+  block = TableBlock(headers=["A", "B"], rows=[["1", "2"]], span=(0, 3))
+  render_table(block)
+  assert mock_imgui.begin_table.called
+  args, _ = mock_imgui.begin_table.call_args
+  assert args[0] == "md_table"
+  assert args[1] == 2
+  assert mock_imgui.end_table.called
+
+def test_render_table_skips_when_no_columns():
+ with patch("src.markdown_table.imgui") as mock_imgui:
+  block = TableBlock(headers=[], rows=[], span=(0, 1))
+  render_table(block)
+  assert not mock_imgui.begin_table.called