From aa431fe361e5aab44e8b8a435eb07150ca2786c6 Mon Sep 17 00:00:00 2001
From: Amy Gale Ruth Bowersox <amy@erbosoft.com>
Date: Sun, 11 Aug 2024 02:17:43 -0600
Subject: [PATCH] revised callout content parsing, which made nested callouts
 automagically work

---
 src/dragonglass/mparse.py | 40 +++++++++++++++++++++++++++++----------
 src/dragonglass/style.py  |  6 ++++++
 2 files changed, 36 insertions(+), 10 deletions(-)

diff --git a/src/dragonglass/mparse.py b/src/dragonglass/mparse.py
index 3951269..b6177f8 100644
--- a/src/dragonglass/mparse.py
+++ b/src/dragonglass/mparse.py
@@ -867,11 +867,13 @@ class ObsidianStyleBlockquotes(Extension):
         CALLOUT = re.compile(r'^\[!([a-z]+)\]([-+])?(?:[ ]+(.*))?')
         CALLOUT_DEFICON = 'pencil'
         CALLOUT_ICONS = {
+            'example': 'list',
             'faq': 'circle-help',
             'help': 'circle-help',
             'info': 'info',
             'question': 'circle-help',
-            'tip': 'flame'
+            'tip': 'flame',
+            'todo': 'circle-check'
         }
 
         def normal_blockquote(self, parent: etree.Element, block: str) -> None:
@@ -920,15 +922,9 @@ class ObsidianStyleBlockquotes(Extension):
                 if folding:
                     styleval = 'display: none;' if folding == '-' else ''
                     content_div.attrib['style'] = styleval
-                first = True
-                for line in lines:
-                    if first:
-                        first = False
-                    else:
-                        etree.SubElement(content_div, 'br')
-                    self.parser.state.set('list')
-                    self.parser.parseBlocks(content_div, [line])
-                    self.parser.state.reset()
+                self.parser.state.set('callout')
+                self.parser.parseBlocks(content_div, ['\n'.join(lines)])
+                self.parser.state.reset()
 
         def run(self, parent: etree.Element, blocks: list[str]) -> None:
             block = blocks.pop(0)
@@ -948,8 +944,32 @@ class ObsidianStyleBlockquotes(Extension):
             else:
                 self.normal_blockquote(parent, block)
 
+    class CalloutLinesProcessor(BlockProcessor):
+        def test(self, parent: etree.Element, block: str) -> bool:
+            return self.parser.state.isstate('callout')
+
+        def run(self, parent: etree.Element, blocks: list[str]) -> bool:
+            block = blocks.pop(0)
+            if block.strip():
+                sibling = self.lastChild(parent)
+                lines = block.split('\n')
+                for line in lines:
+                    if sibling is not None:
+                        if sibling.tail:
+                            sibling = etree.SubElement(parent, 'br')
+                    else:
+                        if parent.text:
+                            sibling = etree.SubElement(parent, 'br')
+                        else:
+                            parent.text = line
+                            continue
+                    sibling.tail = line
+            return True
+
     def extendMarkdown(self, md) -> None:
         md.parser.blockprocessors.register(ObsidianStyleBlockquotes.ObsidianBlockQuote(md.parser), 'quote', 20)
+        md.parser.blockprocessors.register(ObsidianStyleBlockquotes.CalloutLinesProcessor(md.parser),
+                                           'callout-text', 11)
 
 
 def create_markdown_parser(context: Context) -> markdown.Markdown:
diff --git a/src/dragonglass/style.py b/src/dragonglass/style.py
index 398871b..30e42d6 100644
--- a/src/dragonglass/style.py
+++ b/src/dragonglass/style.py
@@ -63,6 +63,9 @@ th {
     background-color: rgba(var(--callout-color), 0.1);
     padding: 12px 12px 12px 24px;
 }
+.callout[data-callout="example"] {
+    --callout-color: 120, 82, 238;
+}
 .callout[data-callout="question"], .callout[data-callout="help"], .callout[data-callout="faq"] {
     --callout-color: 236, 117, 0;
 }
@@ -72,6 +75,9 @@ th {
 .callout[data-callout="tip"] {
     --callout-color: 0, 191, 188;
 }
+.callout[data-callout="todo"] {
+    --callout-color: 8, 109, 221;
+}
 .callout-title {
     padding: 0;
     display: flex;