List<Widget> _mergeInlineChildren(_InlineElement inline)
{
List<Widget> mergedTexts = new List<Widget>();
foreach (Widget child in inline.children)
{
var childText = child as RichText;
if (mergedTexts.isNotEmpty() && mergedTexts.last() is RichText && childText != null)
{
RichText previous = (RichText) mergedTexts.removeLast();
List<TextSpan> children =
previous.text.children != null
? previous.text.children
: new List<TextSpan>() {previous.text};
children.Add(childText.text);
TextSpan mergeSpan = new TextSpan("", null, children);
mergedTexts.Add(new RichText(text:mergeSpan));
}
else
{
mergedTexts.Add(child);
}
}
return mergedTexts;
}
void _addAnonymousBLockIfNeeded(TextStyle style)
{
if (_inlines.isEmpty())
{
return;
}
_InlineElement inline = _inlines.Single();
if (inline.children.isNotEmpty())
{
List<Widget> mergedInlines = _mergeInlineChildren(inline);
Wrap wrap = new Wrap(null, Axis.horizontal, WrapAlignment.start, 0, WrapAlignment.start, 0,
WrapCrossAlignment.start, null, VerticalDirection.down, mergedInlines);
_addBlockChild(wrap);
_inlines.Clear();
}
}
public override void visitElementAfter(markdown.Element element)
{
string tag = element.tag;
if (_isBlockTag(tag))
{
_addAnonymousBLockIfNeeded(styleSheet.styles(tag));
_BlockElement current = _blocks.removeLast();
Widget child;
if (current.children.isNotEmpty())
{
child = new Column(null, null, null, MainAxisAlignment.start, MainAxisSize.max,
CrossAxisAlignment.stretch, VerticalDirection.down, current.children);
}
else
{
child = new SizedBox();
}
if (_isListTag(tag))
{
Debug.Assert(_listIndents.isNotEmpty(), "_listIndents.isNotEmpty()");
_listIndents.removeLast();
}
else if (tag == "li")
{
if (_listIndents.isNotEmpty())
{
child = new Row(
null,
null,
null,
MainAxisAlignment.start,
MainAxisSize.max,
CrossAxisAlignment.start,
VerticalDirection.down,
new List<Widget>()
{
new SizedBox(null, styleSheet.listIndent, null, _buildBullet(_listIndents.last())),
new Expanded(null, 1, child)
});
}
}
else if (tag == "blockquote")
{
child = new DecoratedBox(
null,
styleSheet.blockquoteDecoration,
DecorationPosition.background,
new Padding(
null,
EdgeInsets.all(styleSheet.blockquotePadding),
child));
}
else if (tag == "pre")
{
child = new DecoratedBox(
null,
styleSheet.codeblockDecoration,
DecorationPosition.background,
new Padding(
null,
EdgeInsets.all(styleSheet.codeblockPadding),
child));
}
else if (tag == "hr")
{
child = new DecoratedBox(
null,
styleSheet.horizontalRuleDecoration,
DecorationPosition.background,
child);
}
_addBlockChild(child);
}
else
{
_InlineElement current = _inlines.removeLast();
_InlineElement parent = _inlines.last();
if (tag == "img")
{
current.children.Add(_buildImage(element.attributes["src"]));
}
else if (tag == "a")
{
_linkHandlers.removeLast();
}
if (current.children.isNotEmpty())
{
parent.children.AddRange(current.children);
}
}
}
