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Andrei
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‎lib/html_parser.dart‎

Lines changed: 47 additions & 96 deletions
Original file line numberDiff line numberDiff line change
@@ -33,11 +33,7 @@ class LinkTextSpan extends TextSpan {
3333
final String url;
3434

3535
LinkTextSpan(
36-
{TextStyle style,
37-
this.url,
38-
String text,
39-
OnLinkTap onLinkTap,
40-
List<TextSpan> children})
36+
{TextStyle style, this.url, String text, OnLinkTap onLinkTap, List<TextSpan> children})
4137
: super(
4238
style: style,
4339
text: text,
@@ -81,11 +77,7 @@ class BlockText extends StatelessWidget {
8177
final Decoration decoration;
8278

8379
BlockText(
84-
{@required this.child,
85-
this.padding,
86-
this.margin,
87-
this.leadingChar = '',
88-
this.decoration});
80+
{@required this.child, this.padding, this.margin, this.leadingChar = '', this.decoration});
8981

9082
@override
9183
Widget build(BuildContext context) {
@@ -279,8 +271,7 @@ class HtmlRichTextParser extends StatelessWidget {
279271
bool _hasBlockChild(dom.Node node, {bool ignoreSelf = true}) {
280272
bool retval = false;
281273
if (node is dom.Element) {
282-
if (_supportedBlockElements.contains(node.localName) && !ignoreSelf)
283-
return true;
274+
if (_supportedBlockElements.contains(node.localName) && !ignoreSelf) return true;
284275
node.nodes.forEach((dom.Node node) {
285276
if (_hasBlockChild(node, ignoreSelf: false)) retval = true;
286277
});
@@ -315,8 +306,7 @@ class HtmlRichTextParser extends StatelessWidget {
315306
if (w is BlockText) {
316307
if (w.child.text == null) return;
317308
if ((w.child.text.text == null || w.child.text.text.isEmpty) &&
318-
(w.child.text.children == null || w.child.text.children.isEmpty))
319-
return;
309+
(w.child.text.children == null || w.child.text.children.isEmpty)) return;
320310
} else if (w is LinkBlock) {
321311
if (w.children.isEmpty) return;
322312
} else if (w is LinkTextSpan) {
@@ -343,8 +333,7 @@ class HtmlRichTextParser extends StatelessWidget {
343333
// function can add child nodes to the parent if it should
344334
//
345335
// each iteration creates a new parseContext as a copy of the previous one if it needs to
346-
void _parseNode(
347-
dom.Node node, ParseContext parseContext, BuildContext buildContext) {
336+
void _parseNode(dom.Node node, ParseContext parseContext, BuildContext buildContext) {
348337
// TEXT ONLY NODES
349338
// a text only node is a child of a tag with no inner html
350339
if (node is dom.Text) {
@@ -383,18 +372,15 @@ class HtmlRichTextParser extends StatelessWidget {
383372
// debugPrint("Plain Text Node: '$finalText'");
384373

385374
// create a span by default
386-
TextSpan span = TextSpan(
387-
text: finalText,
388-
children: <TextSpan>[],
389-
style: parseContext.childStyle);
375+
TextSpan span =
376+
TextSpan(text: finalText, children: <TextSpan>[], style: parseContext.childStyle);
390377

391378
// in this class, a ParentElement must be a BlockText, LinkTextSpan, Row, Column, TextSpan
392379

393380
// the parseContext might actually be a block level style element, so we
394381
// need to honor the indent and styling specified by that block style.
395382
// e.g. ol, ul, blockquote
396-
bool treatLikeBlock =
397-
['blockquote', 'ul', 'ol'].indexOf(parseContext.blockType) != -1;
383+
bool treatLikeBlock = ['blockquote', 'ul', 'ol'].indexOf(parseContext.blockType) != -1;
398384

399385
// if there is no parentElement, contain the span in a BlockText
400386
if (parseContext.parentElement == null) {
@@ -405,18 +391,15 @@ class HtmlRichTextParser extends StatelessWidget {
405391
Decoration decoration;
406392
if (parseContext.blockType == 'blockquote') {
407393
decoration = BoxDecoration(
408-
border:
409-
Border(left: BorderSide(color: Colors.black38, width: 2.0)),
394+
border: Border(left: BorderSide(color: Colors.black38, width: 2.0)),
410395
);
411396
parseContext.childStyle = parseContext.childStyle.merge(TextStyle(
412397
fontStyle: FontStyle.italic,
413398
));
414399
}
415400
BlockText blockText = BlockText(
416-
margin: EdgeInsets.only(
417-
top: 8.0,
418-
bottom: 8.0,
419-
left: parseContext.indentLevel * indentSize),
401+
margin:
402+
EdgeInsets.only(top: 8.0, bottom: 8.0, left: parseContext.indentLevel * indentSize),
420403
padding: EdgeInsets.all(2.0),
421404
decoration: decoration,
422405
child: RichText(
@@ -426,8 +409,7 @@ class HtmlRichTextParser extends StatelessWidget {
426409
);
427410
parseContext.rootWidgetList.add(blockText);
428411
} else {
429-
parseContext.rootWidgetList
430-
.add(BlockText(child: RichText(text: span)));
412+
parseContext.rootWidgetList.add(BlockText(child: RichText(text: span)));
431413
}
432414

433415
// this allows future items to be added as children of this item
@@ -437,8 +419,7 @@ class HtmlRichTextParser extends StatelessWidget {
437419
} else if (parseContext.parentElement is LinkTextSpan) {
438420
// add this node to the parent as another LinkTextSpan
439421
parseContext.parentElement.children.add(LinkTextSpan(
440-
style:
441-
parseContext.parentElement.style.merge(parseContext.childStyle),
422+
style: parseContext.parentElement.style.merge(parseContext.childStyle),
442423
url: parseContext.parentElement.url,
443424
text: finalText,
444425
onLinkTap: onLinkTap,
@@ -471,16 +452,14 @@ class HtmlRichTextParser extends StatelessWidget {
471452
//"b","i","em","strong","code","u","small","abbr","acronym"
472453
case "b":
473454
case "strong":
474-
childStyle =
475-
childStyle.merge(TextStyle(fontWeight: FontWeight.bold));
455+
childStyle = childStyle.merge(TextStyle(fontWeight: FontWeight.bold));
476456
break;
477457
case "i":
478458
case "address":
479459
case "cite":
480460
case "var":
481461
case "em":
482-
childStyle =
483-
childStyle.merge(TextStyle(fontStyle: FontStyle.italic));
462+
childStyle = childStyle.merge(TextStyle(fontStyle: FontStyle.italic));
484463
break;
485464
case "kbd":
486465
case "samp":
@@ -490,8 +469,7 @@ class HtmlRichTextParser extends StatelessWidget {
490469
break;
491470
case "ins":
492471
case "u":
493-
childStyle = childStyle
494-
.merge(TextStyle(decoration: TextDecoration.underline));
472+
childStyle = childStyle.merge(TextStyle(decoration: TextDecoration.underline));
495473
break;
496474
case "abbr":
497475
case "acronym":
@@ -507,14 +485,13 @@ class HtmlRichTextParser extends StatelessWidget {
507485
childStyle = childStyle.merge(TextStyle(fontSize: 10.0));
508486
break;
509487
case "mark":
510-
childStyle = childStyle.merge(
511-
TextStyle(backgroundColor: Colors.yellow, color: Colors.black));
488+
childStyle =
489+
childStyle.merge(TextStyle(backgroundColor: Colors.yellow, color: Colors.black));
512490
break;
513491
case "del":
514492
case "s":
515493
case "strike":
516-
childStyle = childStyle
517-
.merge(TextStyle(decoration: TextDecoration.lineThrough));
494+
childStyle = childStyle.merge(TextStyle(decoration: TextDecoration.lineThrough));
518495
break;
519496
case "ol":
520497
nextContext.indentLevel += 1;
@@ -567,8 +544,7 @@ class HtmlRichTextParser extends StatelessWidget {
567544
if (_hasBlockChild(node)) {
568545
LinkBlock linkContainer = LinkBlock(
569546
url: url,
570-
margin: EdgeInsets.only(
571-
left: parseContext.indentLevel * indentSize),
547+
margin: EdgeInsets.only(left: parseContext.indentLevel * indentSize),
572548
onLinkTap: onLinkTap,
573549
children: <Widget>[],
574550
);
@@ -587,8 +563,7 @@ class HtmlRichTextParser extends StatelessWidget {
587563
} else {
588564
// start a new block element for this link and its text
589565
BlockText blockElement = BlockText(
590-
margin: EdgeInsets.only(
591-
left: parseContext.indentLevel * indentSize, top: 10.0),
566+
margin: EdgeInsets.only(left: parseContext.indentLevel * indentSize, top: 10.0),
592567
child: RichText(text: span),
593568
);
594569
parseContext.rootWidgetList.add(blockElement);
@@ -600,10 +575,8 @@ class HtmlRichTextParser extends StatelessWidget {
600575
break;
601576

602577
case "br":
603-
if (parseContext.parentElement != null &&
604-
parseContext.parentElement is TextSpan) {
605-
parseContext.parentElement.children
606-
.add(TextSpan(text: '\n', children: []));
578+
if (parseContext.parentElement != null && parseContext.parentElement is TextSpan) {
579+
parseContext.parentElement.children.add(TextSpan(text: '\n', children: []));
607580
}
608581
break;
609582

@@ -615,8 +588,7 @@ class HtmlRichTextParser extends StatelessWidget {
615588
children: <Widget>[],
616589
);
617590
nextContext.rootWidgetList.add(Container(
618-
margin: EdgeInsets.symmetric(vertical: 12.0),
619-
child: nextContext.parentElement));
591+
margin: EdgeInsets.symmetric(vertical: 12.0), child: nextContext.parentElement));
620592
break;
621593

622594
// we don't handle tbody, thead, or tfoot elements separately for now
@@ -632,11 +604,8 @@ class HtmlRichTextParser extends StatelessWidget {
632604
colspan = int.tryParse(node.attributes['colspan']);
633605
}
634606
nextContext.childStyle = nextContext.childStyle.merge(TextStyle(
635-
fontWeight: (node.localName == 'th')
636-
? FontWeight.bold
637-
: FontWeight.normal));
638-
RichText text =
639-
RichText(text: TextSpan(text: '', children: <TextSpan>[]));
607+
fontWeight: (node.localName == 'th') ? FontWeight.bold : FontWeight.normal));
608+
RichText text = RichText(text: TextSpan(text: '', children: <TextSpan>[]));
640609
Expanded cell = Expanded(
641610
flex: colspan,
642611
child: Container(padding: EdgeInsets.all(1.0), child: text),
@@ -675,14 +644,11 @@ class HtmlRichTextParser extends StatelessWidget {
675644
nextContext.parentElement = text.text;
676645
break;
677646
case "q":
678-
if (parseContext.parentElement != null &&
679-
parseContext.parentElement is TextSpan) {
680-
parseContext.parentElement.children
681-
.add(TextSpan(text: '"', children: []));
647+
if (parseContext.parentElement != null && parseContext.parentElement is TextSpan) {
648+
parseContext.parentElement.children.add(TextSpan(text: '"', children: []));
682649
TextSpan content = TextSpan(text: '', children: []);
683650
parseContext.parentElement.children.add(content);
684-
parseContext.parentElement.children
685-
.add(TextSpan(text: '"', children: []));
651+
parseContext.parentElement.children.add(TextSpan(text: '"', children: []));
686652
nextContext.parentElement = content;
687653
}
688654
break;
@@ -703,8 +669,7 @@ class HtmlRichTextParser extends StatelessWidget {
703669

704670
switch (node.localName) {
705671
case "hr":
706-
parseContext.rootWidgetList
707-
.add(Divider(height: 1.0, color: Colors.black38));
672+
parseContext.rootWidgetList.add(Divider(height: 1.0, color: Colors.black38));
708673
break;
709674
case "img":
710675
if (showImages) {
@@ -722,8 +687,7 @@ class HtmlRichTextParser extends StatelessWidget {
722687
);
723688
parseContext.rootWidgetList.add(GestureDetector(
724689
child: Image.memory(
725-
base64.decode(
726-
node.attributes['src'].split("base64,")[1].trim()),
690+
base64.decode(node.attributes['src'].split("base64,")[1].trim()),
727691
width: imageProperties?.width ??
728692
((node.attributes['width'] != null)
729693
? double.parse(node.attributes['width'])
@@ -806,8 +770,7 @@ class HtmlRichTextParser extends StatelessWidget {
806770
leadingChar = parseContext.listCount.toString() + '.';
807771
}
808772
BlockText blockText = BlockText(
809-
margin: EdgeInsets.only(
810-
left: parseContext.indentLevel * indentSize, top: 3.0),
773+
margin: EdgeInsets.only(left: parseContext.indentLevel * indentSize, top: 3.0),
811774
child: RichText(
812775
text: TextSpan(
813776
text: '',
@@ -868,8 +831,7 @@ class HtmlRichTextParser extends StatelessWidget {
868831
Decoration decoration;
869832
if (parseContext.blockType == 'blockquote') {
870833
decoration = BoxDecoration(
871-
border:
872-
Border(left: BorderSide(color: Colors.black38, width: 2.0)),
834+
border: Border(left: BorderSide(color: Colors.black38, width: 2.0)),
873835
);
874836
nextContext.childStyle = nextContext.childStyle.merge(TextStyle(
875837
fontStyle: FontStyle.italic,
@@ -879,9 +841,7 @@ class HtmlRichTextParser extends StatelessWidget {
879841
margin: node.localName != 'body'
880842
? _customEdgeInsets ??
881843
EdgeInsets.only(
882-
top: 8.0,
883-
bottom: 8.0,
884-
left: parseContext.indentLevel * indentSize)
844+
top: 8.0, bottom: 8.0, left: parseContext.indentLevel * indentSize)
885845
: EdgeInsets.zero,
886846
padding: EdgeInsets.all(2.0),
887847
decoration: decoration,
@@ -1070,8 +1030,7 @@ class HtmlOldParser extends StatelessWidget {
10701030

10711031
Widget _parseNode(dom.Node node) {
10721032
if (customRender != null) {
1073-
final Widget customWidget =
1074-
customRender(node, _parseNodeList(node.nodes));
1033+
final Widget customWidget = customRender(node, _parseNodeList(node.nodes));
10751034
if (customWidget != null) {
10761035
return customWidget;
10771036
}
@@ -1161,9 +1120,8 @@ class HtmlOldParser extends StatelessWidget {
11611120
child: Wrap(
11621121
children: _parseNodeList(node.nodes),
11631122
),
1164-
textDirection: node.attributes["dir"] == "rtl"
1165-
? TextDirection.rtl
1166-
: TextDirection.ltr,
1123+
textDirection:
1124+
node.attributes["dir"] == "rtl" ? TextDirection.rtl : TextDirection.ltr,
11671125
);
11681126
}
11691127
//Direction attribute is required, just render the text normally now.
@@ -1181,8 +1139,7 @@ class HtmlOldParser extends StatelessWidget {
11811139
);
11821140
case "blockquote":
11831141
return Padding(
1184-
padding:
1185-
EdgeInsets.fromLTRB(40.0, blockSpacing, 40.0, blockSpacing),
1142+
padding: EdgeInsets.fromLTRB(40.0, blockSpacing, 40.0, blockSpacing),
11861143
child: Container(
11871144
width: width,
11881145
child: Wrap(
@@ -1305,8 +1262,7 @@ class HtmlOldParser extends StatelessWidget {
13051262
);
13061263
case "figure":
13071264
return Padding(
1308-
padding:
1309-
EdgeInsets.fromLTRB(40.0, blockSpacing, 40.0, blockSpacing),
1265+
padding: EdgeInsets.fromLTRB(40.0, blockSpacing, 40.0, blockSpacing),
13101266
child: Column(
13111267
children: _parseNodeList(node.nodes),
13121268
crossAxisAlignment: CrossAxisAlignment.center,
@@ -1437,13 +1393,12 @@ class HtmlOldParser extends StatelessWidget {
14371393
if (node.attributes['src'].startsWith("data:image") &&
14381394
node.attributes['src'].contains("base64,")) {
14391395
precacheImage(
1440-
MemoryImage(base64.decode(
1441-
node.attributes['src'].split("base64,")[1].trim())),
1396+
MemoryImage(base64.decode(node.attributes['src'].split("base64,")[1].trim())),
14421397
context,
14431398
onError: onImageError,
14441399
);
1445-
return Image.memory(base64.decode(
1446-
node.attributes['src'].split("base64,")[1].trim()));
1400+
return Image.memory(
1401+
base64.decode(node.attributes['src'].split("base64,")[1].trim()));
14471402
}
14481403
precacheImage(
14491404
NetworkImage(node.attributes['src']),
@@ -1455,8 +1410,7 @@ class HtmlOldParser extends StatelessWidget {
14551410
//Temp fix for https://github.com/flutter/flutter/issues/736
14561411
if (node.attributes['alt'].endsWith(" ")) {
14571412
return Container(
1458-
padding: EdgeInsets.only(right: 2.0),
1459-
child: Text(node.attributes['alt']));
1413+
padding: EdgeInsets.only(right: 2.0), child: Text(node.attributes['alt']));
14601414
} else {
14611415
return Text(node.attributes['alt']);
14621416
}
@@ -1678,9 +1632,8 @@ class HtmlOldParser extends StatelessWidget {
16781632
painter = new TextPainter(
16791633
text: new TextSpan(
16801634
text: node.text,
1681-
style: parentStyle.merge(TextStyle(
1682-
fontSize:
1683-
parentStyle.fontSize * OFFSET_TAGS_FONT_SIZE_FACTOR)),
1635+
style: parentStyle.merge(
1636+
TextStyle(fontSize: parentStyle.fontSize * OFFSET_TAGS_FONT_SIZE_FACTOR)),
16841637
),
16851638
textDirection: TextDirection.ltr);
16861639
painter.layout();
@@ -1711,8 +1664,7 @@ class HtmlOldParser extends StatelessWidget {
17111664
top: node.localName == "sub" ? null : 0,
17121665
),
17131666
style: TextStyle(
1714-
fontSize: parentStyle.fontSize *
1715-
OFFSET_TAGS_FONT_SIZE_FACTOR),
1667+
fontSize: parentStyle.fontSize * OFFSET_TAGS_FONT_SIZE_FACTOR),
17161668
)
17171669
],
17181670
)
@@ -1827,8 +1779,7 @@ class HtmlOldParser extends StatelessWidget {
18271779
String finalText = trimStringHtml(node.text);
18281780
//Temp fix for https://github.com/flutter/flutter/issues/736
18291781
if (finalText.endsWith(" ")) {
1830-
return Container(
1831-
padding: EdgeInsets.only(right: 2.0), child: Text(finalText));
1782+
return Container(padding: EdgeInsets.only(right: 2.0), child: Text(finalText));
18321783
} else {
18331784
return Text(finalText);
18341785
}

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