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Original file line number Diff line number Diff line change
@@ -0,0 +1,2 @@
export 'aria_label_service_stub.dart'
if (dart.library.js) 'aria_label_service_web.dart';
Original file line number Diff line number Diff line change
@@ -0,0 +1,7 @@
import 'package:flutter/foundation.dart';

abstract class AriaLabelService {
static void applyLabels(Map<String, String> explicitLabels) {
if (!kIsWeb) return; // no-op on non-web
}
}
Original file line number Diff line number Diff line change
@@ -0,0 +1,28 @@
// ignore: avoid_web_libraries_in_flutter
import 'dart:js' as js;
import 'package:flutter/foundation.dart';

abstract class AriaLabelService {
static void applyLabels(Map<String, String> explicitLabels) {
if (!kIsWeb) return;
final scriptContent = _buildScript(explicitLabels);
(js.context['document'] as dynamic).head.append(
js.context['document'].createElement('script')..text = scriptContent);
}
}

String _buildScript(Map<String, String> explicitLabels) {
final entries = explicitLabels.entries
.map((e) => "['${_escape(e.key)}','${_escape(e.value)}']")
.join(',');

return "(function(){\n"
"var map=new Map([${entries}]);\n"
"function deriveName(text){if(!text)return '';var i=text.indexOf(' Tab ');if(i>0)return text.substring(0,i).trim();return (text.split('\\n')[0]||'').trim();}\n"
"function run(){var nodes=document.querySelectorAll('flt-semantics');nodes.forEach(function(el){var span=el.querySelector('span');var text=(span&&span.textContent)||el.textContent||'';var label=null;map.forEach(function(v,k){if(text.toLowerCase().indexOf(k.toLowerCase())>-1){label=v;}});if(!label){label=deriveName(text);}if(label){el.setAttribute('aria-label',label);var c=el.closest('flt-semantics-container');if(c){c.setAttribute('aria-label',label);}}});}\n"
"setTimeout(run,50);setTimeout(run,250);setTimeout(run,1000);\n"
"var mo=new MutationObserver(function(){setTimeout(run,50);});mo.observe(document.body,{childList:true,subtree:true,attributes:true,attributeFilter:['style','class']});\n"
"})();";
}

String _escape(String s) => s.replaceAll("'", "\\'");
27 changes: 27 additions & 0 deletions modules/ensemble/lib/framework/view/page_group.dart
Original file line number Diff line number Diff line change
Expand Up @@ -15,6 +15,7 @@ import 'package:flutter/foundation.dart';
import 'package:flutter/material.dart';
import 'package:ensemble/framework/widget/icon.dart' as ensemble;
import 'package:ensemble/framework/extensions.dart';
import 'package:ensemble/framework/services/aria_label/aria_label_service.dart';

import 'package:ensemble/ensemble.dart';
import 'bottom_nav_page_group.dart';
Expand Down Expand Up @@ -401,6 +402,19 @@ class PageGroupState extends State<PageGroup>
child: ListenableBuilder(
listenable: viewGroupNotifier,
builder: (context, _) {
// After list rebuilds, apply aria-labels globally on web
WidgetsBinding.instance.addPostFrameCallback((_) {
final Map<String, String> labels = {
for (final item in visibleItems)
(Utils.translate(
item.semantics?.label ?? item.label ?? '',
context)):
(Utils.translate(
item.semantics?.label ?? item.label ?? '',
context))
};
AriaLabelService.applyLabels(labels);
});
int selectedVisibleIndex = -1;
if (viewGroupNotifier.viewIndex >= 0 &&
viewGroupNotifier.viewIndex < menu.menuItems.length) {
Expand Down Expand Up @@ -598,6 +612,19 @@ class PageGroupState extends State<PageGroup>
}
navItems.add(menuItem);
}
// After drawer list rebuilds, apply aria-labels globally on web
WidgetsBinding.instance.addPostFrameCallback((_) {
final Map<String, String> labels = {
for (final item in visibleItems)
(Utils.translate(
item.semantics?.label ?? item.label ?? '',
context)):
(Utils.translate(
item.semantics?.label ?? item.label ?? '',
context))
};
AriaLabelService.applyLabels(labels);
});
return ListView(children: navItems);
}),
),
Expand Down