tabbed_view 1.0.0

Flutter widget inspired by the classic Desktop-style tab component. Supports customizable themes.

Flutter widget inspired by the classic Desktop-style tab component. Supports customizable themes.

The TabbedView renders the presentation of the model.

The TabbedViewModel stores the tab data as name, content, buttons or any dynamic value.

Get started

The TabbedViewTheme.classic() method builds the default theme.

    List<TabData> tabs = [];
    for (var i = 1; i < 7; i++) {
      Widget tabContent = Center(child: Text('Content $i'));
      tabs.add(TabData(text: 'Tab $i', content: tabContent));
    }
    TabbedWiew tabbedView = TabbedWiew(controller: TabbedWiewController(tabs));

Content builder

It allows creating the contents of the tab dynamically during the selection event.

    var tabs = [
      TabData(text: 'Tab 1'),
      TabData(text: 'Tab 2'),
      TabData(text: 'Tab 3')
    ];

    TabbedWiew tabbedView = TabbedWiew(
        controller: TabbedWiewController(tabs),
        contentBuilder: (BuildContext context, int tabIndex) {
          int i = tabIndex + 1;
          return Center(child: Text('Content $i'));
        });

Close button tooltip

    var tabs = [
      TabData(text: 'Tab 1'),
      TabData(text: 'Tab 2'),
      TabData(text: 'Tab 3')
    ];
    TabbedWiew tabbedView = TabbedWiew(
        controller: TabbedWiewController(tabs),
        closeButtonTooltip: 'Click here to close the tab');

Tab

Adding buttons

    TabData tab = TabData(text: 'Tab', buttons: [
      TabButton(icon: Icons.star, onPressed: () => print('Hello!'))
    ]);
    TabbedWiew tabbedView = TabbedWiew(controller: TabbedWiewController([tab]));

Overriding theme color

    var tabs = [
      TabData(text: 'Tab 1'),
      TabData(text: 'Tab 2', buttons: [
        TabButton(
            icon: Icons.star,
            color: Colors.green,
            onPressed: () => print('Hello!'))
      ])
    ];
    TabbedWiew tabbedView = TabbedWiew(controller: TabbedWiewController(tabs));

Removing the close button

    var tabs = [
      TabData(text: 'Tab'),
      TabData(text: 'Non-closable tab', closable: false)
    ];
    TabbedWiew tabbedView = TabbedWiew(controller: TabbedWiewController(tabs));

Close listener

    bool _onTabClosing(int tabIndex) {
      if (tabIndex == 0) {
        print('The tab $tabIndex is busy and cannot be closed.');
        return false;
      }
      print('Closing tab $tabIndex...');
      return true;
    }

    List<TabData> tabs = [
      TabData(text: 'Tab 1'),
      TabData(text: 'Tab 2'),
      TabData(text: 'Tab 3')
    ];
    TabbedWiew tabbedView = TabbedWiew(
        controller: TabbedWiewController(tabs), onTabClosing: _onTabClosing);

Selection listener

    _onTabSelection(int? newTabIndex) {
      print('The new selected tab is $newTabIndex.');
    }

    List<TabData> tabs = [
      TabData(text: 'Tab 1'),
      TabData(text: 'Tab 2'),
      TabData(text: 'Tab 3')
    ];
    TabbedWiew tabbedView = TabbedWiew(
        controller: TabbedWiewController(tabs),
        onTabSelection: _onTabSelection);

Tabs area

Buttons

    TabbedWiewController controller = TabbedWiewController([]);

    TabbedWiew tabbedView = TabbedWiew(
        controller: controller,
        tabsAreaButtonsBuilder: (context, tabsCount) {
          List<TabButton> buttons = [];
          buttons.add(TabButton(
              icon: Icons.add,
              onPressed: () {
                int millisecond = DateTime.now().millisecondsSinceEpoch;
                controller.addTab(TabData(text: '$millisecond'));
              }));
          if (tabsCount > 0) {
            buttons.add(TabButton(
                icon: Icons.delete,
                onPressed: () {
                  if (controller.selectedIndex != null) {
                    controller.removeTab(controller.selectedIndex!);
                  }
                }));
          }
          return buttons;
        });

Themes

Tab

Text style

    var tabs = [
      TabData(text: 'Tab 1'),
      TabData(text: 'Tab 2'),
    ];

    TabbedViewTheme theme = TabbedViewTheme.classic();
    theme.tabsArea.tab.textStyle = TextStyle(fontSize: 20, color: Colors.blue);

    TabbedWiew tabbedView =
        TabbedWiew(controller: TabbedWiewController(tabs), theme: theme);

Alignment

    var tabs = [
      TabData(text: 'Tab 1'),
      TabData(text: 'Tab 2'),
    ];

    TabbedViewTheme theme = TabbedViewTheme.classic();
    theme.tabsArea.tab
      ..textStyle = TextStyle(fontSize: 20)
      ..verticalAlignment = VerticalAlignment.top;

    TabbedWiew tabbedView =
        TabbedWiew(controller: TabbedWiewController(tabs), theme: theme);

Tabs area

Color

• The default TabsAreaTheme color is null.

    var tabs = [TabData(text: 'Tab 1'), TabData(text: 'Tab 2')];

    TabbedViewTheme theme = TabbedViewTheme.minimalist();
    theme.tabsArea.color = Colors.green[100];

    TabbedWiew tabbedView =
        TabbedWiew(controller: TabbedWiewController(tabs), theme: theme);

Tab gaps

• Gap before the tabs (allows negative value).
• Gap between tabs (allows negative value).
• Minimum gap after tabs. Separates the last tab and the buttons area.

    List<TabData> tabs = [];
    for (var i = 1; i < 7; i++) {
      tabs.add(
          TabData(text: 'Tab $i', content: Center(child: Text('Content $i'))));
    }

    TabbedViewTheme theme = TabbedViewTheme.classic();
    theme.tabsArea
      ..initialGap = 20
      ..middleGap = 5
      ..minimalFinalGap = 5;

    TabbedWiew tabbedView =
        TabbedWiew(controller: TabbedWiewController(tabs), theme: theme);

Buttons area

Button icon for the hidden tabs menu

    List<TabData> tabs = [];
    for (var i = 1; i < 7; i++) {
      tabs.add(TabData(text: 'Tab $i'));
    }

    TabbedViewTheme theme = TabbedViewTheme.classic();
    theme.tabsArea.buttonsArea.hiddenTabsMenuButtonIcon =
        Icons.arrow_drop_down_circle_outlined;

    TabbedWiew tabbedView =
        TabbedWiew(controller: TabbedWiewController(tabs), theme: theme);

Menu

Max width

    List<TabData> tabs = [];
    for (int i = 1; i < 11; i++) {
      tabs.add(TabData(text: 'Tab $i'));
    }

    TabbedViewTheme theme = TabbedViewTheme.classic()..menu.maxWidth = 100;

    TabbedWiew tabbedView =
        TabbedWiew(controller: TabbedWiewController(tabs), theme: theme);

Ellipsis on overflow text

    var tabs = [
      TabData(text: 'Tab 1'),
      TabData(text: 'Tab 2'),
      TabData(text: 'Tab 3'),
      TabData(
          text: 'The name of the tab is so long that it doesn'
              't fit on the menu')
    ];

    TabbedViewTheme theme = TabbedViewTheme.classic()
      ..menu.ellipsisOverflowText = true;

    TabbedWiew tabbedView =
        TabbedWiew(controller: TabbedWiewController(tabs), theme: theme);

Predefined themes

Classic theme

    List<TabData> tabs = [];
    for (var i = 1; i < 7; i++) {
      tabs.add(TabData(text: 'Tab $i', content:  Center(child: Text('Content $i'))));
    }
    TabbedWiewController controller = TabbedWiewController(tabs);

    TabbedWiew tabbedView = TabbedWiew(
        controller: controller,
        theme: TabbedViewTheme.classic());

Color set

    List<TabData> tabs = [];
    for (var i = 1; i < 7; i++) {
      tabs.add(TabData(text: 'Tab $i', content:  Center(child: Text('Content $i'))));
    }
    TabbedWiewController controller = TabbedWiewController(tabs);

    TabbedViewTheme theme = TabbedViewTheme.classic(colorSet: Colors.green);

    TabbedWiew tabbedView = TabbedWiew(
        controller: controller,
        theme: theme);

Dark theme

    List<TabData> tabs = [];
    for (var i = 1; i < 7; i++) {
      tabs.add(TabData(text: 'Tab $i'));
    }
    TabbedWiewController controller = TabbedWiewController(tabs);

    var contentBuilder = (BuildContext context, int index) {
      int i = index + 1;
      Text text = Text('Content $i', style: TextStyle(color: Colors.white));
      return Center(child: text);
    };

    TabbedWiew tabbedView = TabbedWiew(
        controller: controller,
        contentBuilder: contentBuilder,
        theme: TabbedViewTheme.dark());

    Container container = Container(child: tabbedView, color: Colors.black);

Color set

    List<TabData> tabs = [];
    for (var i = 1; i < 7; i++) {
      tabs.add(TabData(text: 'Tab $i'));
    }
    TabbedWiewController controller = TabbedWiewController(tabs);

    var contentBuilder = (BuildContext context, int index) {
      int i = index + 1;
      Text text = Text('Content $i', style: TextStyle(color: Colors.white));
      return Center(child: text);
    };

    TabbedViewTheme theme = TabbedViewTheme.dark(colorSet: Colors.indigo);

    TabbedWiew tabbedView = TabbedWiew(
        controller: controller, contentBuilder: contentBuilder, theme: theme);

    Container container = Container(child: tabbedView, color: Colors.black12);

Mobile theme

    TabbedWiew tabbedView =
        TabbedWiew(controller: controller, theme: TabbedViewTheme.mobile());

Color set

    TabbedViewTheme theme = TabbedViewTheme.mobile(colorSet: Colors.blueGrey);
    TabbedWiew tabbedView = TabbedWiew(controller: controller, theme: theme);

Highlighted tab color

    TabbedViewTheme theme =
        TabbedViewTheme.mobile(highlightedTabColor: Colors.green[700]!);
    TabbedWiew tabbedView = TabbedWiew(controller: controller, theme: theme);

Minimalist theme

    TabbedWiew tabbedView =
        TabbedWiew(controller: controller, theme: TabbedViewTheme.minimalist());

Color set

    TabbedWiew tabbedView = TabbedWiew(
        controller: controller,
        theme: TabbedViewTheme.minimalist(colorSet: Colors.blue));

Creating new theme

It is possible to create an entire theme from scratch.

    var tabs = [
      TabData(text: 'Tab 1'),
      TabData(text: 'Tab 2'),
      TabData(text: 'Tab 3')
    ];

    TabbedViewTheme theme = TabbedViewTheme();
    theme.tabsArea
      ..border = Border(bottom: BorderSide(color: Colors.green[700]!, width: 3))
      ..middleGap = 6;

    Radius radius = Radius.circular(10.0);
    BorderRadiusGeometry? borderRadius =
        BorderRadius.only(topLeft: radius, topRight: radius);

    theme.tabsArea.tab
      ..padding = EdgeInsets.fromLTRB(10, 4, 10, 4)
      ..buttonsOffset = 8
      ..decoration = BoxDecoration(
          shape: BoxShape.rectangle,
          color: Colors.green[100],
          borderRadius: borderRadius)
      ..selectedStatus.decoration =
          BoxDecoration(color: Colors.green[200], borderRadius: borderRadius)
      ..highlightedStatus.decoration =
          BoxDecoration(color: Colors.green[50], borderRadius: borderRadius);

    TabbedWiew tabbedView =
        TabbedWiew(controller: TabbedWiewController(tabs), theme: theme);