build method

@override Widget build(BuildContext context, CommandBarItemDisplayMode displayMode)

Builds the final widget for this display mode for this item. Sub-classes implement this to build the widget that is appropriate for the given display mode.

Implementation

@override
Widget build(BuildContext context, CommandBarItemDisplayMode displayMode) {
  assert(debugCheckHasFluentTheme(context));
  switch (displayMode) {
    case CommandBarItemDisplayMode.inPrimary:
    case CommandBarItemDisplayMode.inPrimaryCompact:
      final showIcon = icon != null;
      final showLabel = label != null &&
          (displayMode == CommandBarItemDisplayMode.inPrimary || !showIcon);
      return IconButton(
        key: key,
        onPressed: onPressed,
        onLongPress: onLongPress,
        focusNode: focusNode,
        autofocus: autofocus,
        style: ButtonStyle(
          backgroundColor: ButtonState.resolveWith((states) {
            final theme = FluentTheme.of(context);
            return ButtonThemeData.uncheckedInputColor(
              theme,
              states,
              transparentWhenNone: true,
            );
          }),
        ),
        icon: Row(mainAxisSize: MainAxisSize.min, children: [
          if (showIcon)
            IconTheme.merge(
              data: const IconThemeData(size: 16),
              child: icon!,
            ),
          if (showIcon && showLabel) const SizedBox(width: 10),
          if (showLabel) label!,
        ]),
      );
    case CommandBarItemDisplayMode.inSecondary:
      return Padding(
        padding: const EdgeInsetsDirectional.only(end: 8.0, start: 8.0),
        child: FlyoutListTile(
          key: key,
          onPressed: onPressed,
          focusNode: focusNode,
          autofocus: autofocus,
          icon: icon,
          text: label ?? const SizedBox.shrink(),
        ),
      );
  }
}