Table inside a list must be aligned #192

Author: onizet

src/Html2OpenXml/Expressions/Numbering/ListExpression.cs

@@ -91,6 +91,17 @@ public override IEnumerable<OpenXmlElement> Interpret(ParsingContext context)
             var childElements = expression.Interpret(context);
             if (!childElements.Any()) continue;
 
+            // table must be aligned to the list item
+            var tables = childElements.OfType<Table>();
+            foreach (var table in tables)
+            {
+                var tableProperties = table.GetFirstChild<TableProperties>();
+                if (tableProperties == null)
+                    table.PrependChild(tableProperties = new());
+
+                tableProperties.TableIndentation ??= new() { Width = level * Indentation * 2 };
+            }
+
             // ensure to filter out any non-paragraph like any nested table
             var paragraphs = childElements.OfType<Paragraph>();
             var listItemStyleId = GetStyleIdForListItem(context.DocumentStyle, liNode);

test/HtmlToOpenXml.Tests/NumberingTests.cs

@@ -611,5 +611,32 @@ public void NestedParagraph_ReturnsIndentedItems()
                     "Last standalone paragraph is aligned with the level 1");
             });
         }
+
+        [Test]
+        public void NestedTable_ReturnsAlignedTable()
+        {
+            var elements = converter.Parse(@"<ol>
+                <li>Item 1
+                    <table><tr><td>Cell1</td></tr></table>
+                    <ol>
+                        <li>Item 1.1
+                            <table><tr><td>Cell1.1</td></tr></table>
+                        </li>
+                    </ol>
+                </li>
+                </ol>");
+
+            Assert.That(elements, Is.Not.Empty);
+            var odds = elements.Where((item, index) => index % 2 != 0);
+            Assert.That(odds, Has.All.TypeOf<Table>());
+            for (int i = 0; i < 2; i++)
+            {
+                var table = (Table) odds.ElementAt(i);
+                var tableProperties = table.GetFirstChild<TableProperties>();
+                Assert.That(tableProperties, Is.Not.Null);
+                Assert.That(tableProperties.TableIndentation, Is.Not.Null);
+                Assert.That(tableProperties.TableIndentation.Width?.Value, Is.EqualTo(720 * (i+1)));
+            }
+        }
     }
 }