Write out the HTML correctly for nested lists

When we are having nested lists then we need to ensure that the HTML is
outputted correctly so that the closing list and item tags are placed
in the right order.

[ChangeLog][QtGui][QTextDocument] The output of toHtml() now handles
nested lists correctly.

Fixes: QTBUG-88374
Change-Id: I88afba0f897aeef78d4835a3124097fe6fd4d55e
Reviewed-by: Allan Sandfeld Jensen <allan.jensen@qt.io>
(cherry picked from commit 72a5151403f107c445e20cf548ca2e7309c88ce7)
Reviewed-by: Qt Cherry-pick Bot <cherrypick_bot@qt-project.org>

1 files changed, 58 insertions, 0 deletions

diff --git a/tests/auto/gui/text/qtextdocument/tst_qtextdocument.cpp b/tests/auto/gui/text/qtextdocument/tst_qtextdocument.cpp
index a0489e287c..b814058546 100644
--- a/tests/auto/gui/text/qtextdocument/tst_qtextdocument.cpp
+++ b/tests/auto/gui/text/qtextdocument/tst_qtextdocument.cpp
@@ -1716,6 +1716,59 @@ void tst_QTextDocument::toHtml_data()
                                         << QString("EMPTYBLOCK") +
                                            QString("<ul style=\"margin-top: 0px; margin-bottom: 0px; margin-left: 0px; margin-right: 0px; -qt-list-indent: 1;\"><li DEFAULTBLOCKSTYLE>Blah</li></ul>");
     }
+    {
+        CREATE_DOC_AND_CURSOR();
+        const QString listHtml = "<ul><li>item-1</li><li>item-2<ul><li>item-2.1</li><li>item-2.2"
+                                 "<ul><li>item-2.2.1</li></ul></li><li>item-2.3<ul><li>item-2.3.1"
+                                 "</li></ul></li></ul></li><li>item-3</li></ul>";
+        cursor.insertHtml(listHtml);
+
+        QTest::newRow("nested-lists-one") << QTextDocumentFragment(&doc)
+            << QString("<ul DEFAULTULSTYLE 1;\"><li style=\" margin-top:12px; margin-bottom:0px; "
+                       "margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;\">"
+                       "item-1</li>\n<li DEFAULTBLOCKSTYLE>item-2\n<ul DEFAULTULSTYLE 2;\"><li "
+                       "DEFAULTBLOCKSTYLE>item-2.1</li>\n<li DEFAULTBLOCKSTYLE>item-2.2\n<ul "
+                       "DEFAULTULSTYLE 3;\"><li DEFAULTBLOCKSTYLE>item-2.2.1</li></ul></li>\n"
+                       "<li DEFAULTBLOCKSTYLE>item-2.3\n<ul DEFAULTULSTYLE 3;\"><li DEFAULTBLOCKSTYLE>"
+                       "item-2.3.1</li></ul></li></ul></li>\n<li DEFAULTLASTLISTYLE>item-3</li></ul>");
+    }
+    {
+        CREATE_DOC_AND_CURSOR();
+        const QString listHtml = "<ul><li>item-1</li><li>item-2<ul><li>item-2.1</li></ul></li></ul>";
+        cursor.insertHtml(listHtml);
+
+        QTest::newRow("nested-lists-two") << QTextDocumentFragment(&doc)
+            << QString("<ul DEFAULTULSTYLE 1;\"><li style=\" margin-top:12px; margin-bottom:0px; "
+                       "margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;\">"
+                       "item-1</li>\n<li DEFAULTLASTLISTYLE>item-2\n<ul DEFAULTULSTYLE 2;\"><li "
+                       "DEFAULTBLOCKSTYLE>item-2.1</li></ul></li></ul>");
+    }
+    {
+        CREATE_DOC_AND_CURSOR();
+        const QString listHtml = "<ul><li>item-1</li><li>item-2<ul><li>item-2.1</li><li>item-2.2"
+                                 "</li></ul></li></ul>";
+        cursor.insertHtml(listHtml);
+
+        QTest::newRow("nested-lists-three") << QTextDocumentFragment(&doc)
+            << QString("<ul DEFAULTULSTYLE 1;\"><li style=\" margin-top:12px; margin-bottom:0px; "
+                       "margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;\">"
+                       "item-1</li>\n<li DEFAULTLASTLISTYLE>item-2\n<ul DEFAULTULSTYLE 2;\"><li "
+                       "DEFAULTBLOCKSTYLE>item-2.1</li>\n<li DEFAULTBLOCKSTYLE>item-2.2</li></ul>"
+                       "</li></ul>");
+    }
+    {
+        CREATE_DOC_AND_CURSOR();
+        const QString listHtml = "<ul><li>item-1.1</li><li>item-1.2<li></ul>"
+                                 "<ul><li>item-2.1</li></ul>";
+        cursor.insertHtml(listHtml);
+
+        QTest::newRow("not-nested-list") << QTextDocumentFragment(&doc)
+            << QString("<ul DEFAULTULSTYLE 1;\"><li style=\" margin-top:12px; margin-bottom:0px; "
+                       "margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;\">"
+                       "item-1.1</li>\n<li DEFAULTBLOCKSTYLE>item-1.2</li></ul>\n<ul DEFAULTULSTYLE 1;\">"
+                       "<li style=\" margin-top:12px; margin-bottom:12px; margin-left:0px; "
+                       "margin-right:0px; -qt-block-indent:0; text-indent:0px;\">item-2.1</li></ul>");
+    }
 }
 
 void tst_QTextDocument::toHtml()
@@ -1730,6 +1783,11 @@ void tst_QTextDocument::toHtml()
     expectedOutput.replace("OPENDEFAULTBLOCKSTYLE", "style=\" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;");
     expectedOutput.replace("DEFAULTBLOCKSTYLE", "style=\" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;\"");
     expectedOutput.replace("EMPTYBLOCK", "<p style=\"-qt-paragraph-type:empty; margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;\"><br /></p>\n");
+    expectedOutput.replace("DEFAULTULSTYLE", "style=\"margin-top: 0px; margin-bottom: 0px; "
+                           "margin-left: 0px; margin-right: 0px; -qt-list-indent:");
+    expectedOutput.replace("DEFAULTLASTLISTYLE", "style=\" margin-top:0px; margin-bottom:12px; "
+                           "margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;\"");
+
     if (expectedOutput.endsWith(QLatin1Char('\n')))
         expectedOutput.chop(1);
     expectedOutput.append(htmlTail);