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 ) )); }