public MaterialBannerTheme(
Key key = null,
MaterialBannerThemeData data = null,
Widget child = null
) : base(key: key, child: child)
{
this.data = data;
}
public override Widget build(BuildContext context)
{
D.assert(actions.isNotEmpty);
ThemeData theme = Theme.of(context);
MaterialBannerThemeData bannerTheme = MaterialBannerTheme.of(context);
bool isSingleRow = actions.Count == 1 && !forceActionsBelow;
EdgeInsetsGeometry padding = this.padding ?? bannerTheme?.padding ?? (isSingleRow
? EdgeInsetsDirectional.only(start: 16.0f, top: 2.0f)
: EdgeInsetsDirectional.only(start: 16.0f, top: 24.0f, end: 16.0f,
bottom: 4.0f));
EdgeInsetsGeometry leadingPadding = this.leadingPadding
?? bannerTheme?.padding
?? EdgeInsetsDirectional.only(end: 16.0f);
Widget buttonBar = new ButtonBar(
layoutBehavior: ButtonBarLayoutBehavior.constrained,
children: actions
);
Color backgroundColor = this.backgroundColor
?? bannerTheme?.backgroundColor
?? theme.colorScheme.surface;
TextStyle textStyle = contentTextStyle
?? bannerTheme?.contentTextStyle
?? theme.textTheme.bodyText2;
var rowList = new List <Widget>();
if (leading != null)
{
rowList.Add(new Padding(
padding: leadingPadding,
child: leading
));
}
rowList.Add(new Expanded(
child: new DefaultTextStyle(
style: textStyle,
child: content
)
));
if (isSingleRow)
{
rowList.Add(buttonBar);
}
var columnList = new List <Widget>();
columnList.Add(new Padding(
padding: padding,
child: new Row(
children: rowList
)
));
if (!isSingleRow)
{
columnList.Add(buttonBar);
}
columnList.Add(new Divider(height: 0));
return(new Container(
color: backgroundColor,
child: new Column(
children: columnList
)
));
}
