buildLeading method
Implementation
Widget? buildLeading(
BuildContext context, AppBarLeadingType leadingIconType) {
var list = <Widget>[];
if (leadingIconType == AppBarLeadingType.Close ||
leadingIconType == AppBarLeadingType.Back) {
list.add(IconButton(
icon: Icon(leadingIconType == AppBarLeadingType.Back
? Icons.keyboard_arrow_left
: Icons.close),
color: color ?? DefaultColors.text,
iconSize: leadingIconType == AppBarLeadingType.Back ? 30 : 26,
tooltip: "Schließen",
onPressed: () async {
Navigator.of(context).maybePop();
},
));
}
if (Scaffold.of(context).hasDrawer) {
list.add(IconButton(
icon: Icon(Icons.menu),
color: color ?? DefaultColors.text,
iconSize: 24,
tooltip: "Navigation öffnen",
onPressed: () async {
Scaffold.of(context).openDrawer();
},
));
}
return list.length > 0
? ExcludeFocusTraversal(
child: Padding(
padding: const EdgeInsets.only(left: 7),
child: Row(
children: list,
mainAxisSize: MainAxisSize.min,
mainAxisAlignment: MainAxisAlignment.start,
crossAxisAlignment: CrossAxisAlignment.center,
),
),
)
: null;
}