Markdown: fix several issues with lists and continuations

Importer fixes:
- the first list item after a heading doesn't keep the heading font
- the first text fragment after a bullet is the bullet text, not a
  separate paragraph
- detect continuation lines and append to the list item text
- detect continuation paragraphs and indent them properly
- indent nested list items properly
- add a test for QTextMarkdownImporter
Writer fixes:
- after bullet items, continuation lines and paragraphs are indented
- indentation of continuations isn't affected by checkboxes
- add extra newlines between list items in "loose" lists
- avoid writing triple newlines
- enhance the test for QTextMarkdownWriter

Change-Id: Ib1dda514832f6dc0cdad177aa9a423a7038ac8c6
Reviewed-by: Gatis Paeglis <gatis.paeglis@qt.io>

1 files changed, 11 insertions, 0 deletions

diff --git a/src/gui/text/qtextmarkdownwriter_p.h b/src/gui/text/qtextmarkdownwriter_p.h
index 2a9388ca2d..250288bcff 100644
--- a/src/gui/text/qtextmarkdownwriter_p.h
+++ b/src/gui/text/qtextmarkdownwriter_p.h
@@ -71,8 +71,19 @@ public:
     void writeFrame(const QTextFrame *frame);
 
 private:
+    struct ListInfo {
+        bool loose;
+    };
+
+    ListInfo listInfo(QTextList *list);
+
+private:
     QTextStream &m_stream;
     QTextDocument::MarkdownFeatures m_features;
+    QMap<QTextList *, ListInfo> m_listInfo;
+    int m_wrappedLineIndent = 0;
+    int m_lastListIndent = 1;
+    bool m_doubleNewlineWritten = false;
 };
 
 QT_END_NAMESPACE