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Provide access to GlobalKey field of tab bar buttons #43

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Provide access to GlobalKey field of tab bar buttons #43

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18 changes: 16 additions & 2 deletions lib/MotionTabBar.dart
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Original file line number Diff line number Diff line change
Expand Up @@ -17,6 +17,7 @@ class MotionTabBar extends StatefulWidget {

final List<String?> labels;
final List<IconData>? icons;
final List<GlobalKey>? buttonKeys;
final bool useSafeArea;
final MotionTabBarController? controller;

Expand All @@ -40,9 +41,11 @@ class MotionTabBar extends StatefulWidget {
this.useSafeArea = true,
this.badges,
this.controller,
this.buttonKeys,
}) : assert(labels.contains(initialSelectedTab)),
assert(icons != null && icons.length == labels.length),
assert((badges != null && badges.length > 0) ? badges.length == labels.length : true);
assert((badges != null && badges.length > 0) ? badges.length == labels.length : true),
assert((buttonKeys != null && buttonKeys.length > 0) ? buttonKeys.length == labels.length : true);

@override
_MotionTabBarState createState() => _MotionTabBarState();
Expand All @@ -59,6 +62,7 @@ class _MotionTabBarState extends State<MotionTabBar> with TickerProviderStateMix

late List<String?> labels;
late Map<String?, IconData> icons;
late Map<String?, GlobalKey> buttonGlobalKeys;

get tabAmount => icons.keys.length;
get index => labels.indexOf(selectedTab);
Expand Down Expand Up @@ -106,7 +110,15 @@ class _MotionTabBarState extends State<MotionTabBar> with TickerProviderStateMix
key: (label) => label,
value: (label) => widget.icons![labels.indexOf(label)],
);

if(widget.buttonKeys!=null && widget.buttonKeys!.isNotEmpty) {
buttonGlobalKeys = Map.fromIterable(
labels,
key: (label) => label,
value: (label) => widget.buttonKeys![labels.indexOf(label)],
);
}else{
buttonGlobalKeys = {};
}
selectedTab = widget.initialSelectedTab;
activeIcon = icons[selectedTab];

Expand Down Expand Up @@ -276,11 +288,13 @@ class _MotionTabBarState extends State<MotionTabBar> with TickerProviderStateMix
bool isRtl = Directionality.of(context).index == 0;
return labels.map((tabLabel) {
IconData? icon = icons[tabLabel];
GlobalKey? buttonKey = buttonGlobalKeys.isEmpty ? null : buttonGlobalKeys[tabLabel];

int selectedIndex = labels.indexWhere((element) => element == tabLabel);
Widget? badge = (widget.badges != null && widget.badges!.length > 0) ? widget.badges![selectedIndex] : null;

return MotionTabItem(
key: buttonKey,
selected: selectedTab == tabLabel,
iconData: icon,
title: tabLabel,
Expand Down
4 changes: 2 additions & 2 deletions lib/MotionTabItem.dart
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Original file line number Diff line number Diff line change
Expand Up @@ -17,8 +17,8 @@ class MotionTabItem extends StatefulWidget {
final Color tabIconColor;
final double? tabIconSize;
final Widget? badge;

MotionTabItem({
GlobalKey? key,
required this.title,
required this.selected,
required this.iconData,
Expand All @@ -27,7 +27,7 @@ class MotionTabItem extends StatefulWidget {
required this.callbackFunction,
this.tabIconSize = 24,
this.badge,
});
}) : super(key:key);

@override
_MotionTabItemState createState() => _MotionTabItemState();
Expand Down