Merge pull request #315 from JacobWrenn/master

Add support for list-style-position css attribute

Author: ryan-berger

lib/html_parser.dart

@@ -267,19 +267,24 @@ class HtmlParser extends StatelessWidget {
           style: tree.style,
           shrinkWrap: context.parser.shrinkWrap,
           child: Stack(
-            children: <Widget>[
-              PositionedDirectional(
-                width: 30, //TODO derive this from list padding.
-                start: 0,
-                child: Text('${newContext.style.markerContent}\t',
-                    textAlign: TextAlign.end,
-                    style: newContext.style.generateTextStyle()),
-              ),
+            children: [
+              if (tree.style?.listStylePosition == ListStylePosition.OUTSIDE || tree.style?.listStylePosition == null)
+                PositionedDirectional(
+                  width: 30, //TODO derive this from list padding.
+                  start: 0,
+                  child: Text('${newContext.style.markerContent}\t',
+                      textAlign: TextAlign.right,
+                      style: newContext.style.generateTextStyle()),
+                ),
               Padding(
                 padding: EdgeInsetsDirectional.only(
                     start: 30), //TODO derive this from list padding.
                 child: StyledText(
                   textSpan: TextSpan(
+                    text: (tree.style?.listStylePosition ==
+                            ListStylePosition.INSIDE)
+                        ? '${newContext.style.markerContent}\t'
+                        : null,
                     children: tree.children
                             ?.map((tree) => parseTree(newContext, tree))
                             ?.toList() ??

lib/style.dart

@@ -77,6 +77,12 @@ class Style {
   /// Default: ListStyleType.DISC
   ListStyleType listStyleType;
 
+  /// CSS attribute "`list-style-position`"
+  ///
+  /// Inherited: yes,
+  /// Default: ListStylePosition.OUTSIDE
+  ListStylePosition listStylePosition;
+
   /// CSS attribute "`padding`"
   ///
   /// Inherited: no,
@@ -183,6 +189,7 @@ class Style {
     this.lineHeight,
     this.letterSpacing,
     this.listStyleType,
+    this.listStylePosition,
     this.padding,
     this.margin,
     this.textAlign,
@@ -251,6 +258,7 @@ class Style {
       lineHeight: other.lineHeight,
       letterSpacing: other.letterSpacing,
       listStyleType: other.listStyleType,
+      listStylePosition: other.listStylePosition,
       padding: other.padding,
       //TODO merge EdgeInsets
       margin: other.margin,
@@ -288,6 +296,7 @@ class Style {
       fontWeight: child.fontWeight ?? fontWeight,
       letterSpacing: child.letterSpacing ?? letterSpacing,
       listStyleType: child.listStyleType ?? listStyleType,
+      listStylePosition: child.listStylePosition ?? listStylePosition,
       textAlign: child.textAlign ?? textAlign,
       textShadow: child.textShadow ?? textShadow,
       whiteSpace: child.whiteSpace ?? whiteSpace,
@@ -309,6 +318,7 @@ class Style {
     double lineHeight,
     double letterSpacing,
     ListStyleType listStyleType,
+    ListStylePosition listStylePosition,
     EdgeInsets padding,
     EdgeInsets margin,
     TextAlign textAlign,
@@ -341,6 +351,7 @@ class Style {
       lineHeight: lineHeight ?? this.lineHeight,
       letterSpacing: letterSpacing ?? this.letterSpacing,
       listStyleType: listStyleType ?? this.listStyleType,
+      listStylePosition: listStylePosition ?? this.listStylePosition,
       padding: padding ?? this.padding,
       margin: margin ?? this.margin,
       textAlign: textAlign ?? this.textAlign,
@@ -421,6 +432,11 @@ enum ListStyleType {
   DECIMAL,
 }
 
+enum ListStylePosition {
+  OUTSIDE,
+  INSIDE,
+}
+
 enum VerticalAlign {
   BASELINE,
   SUB,