# Class Tabs

java.lang.Object
com.codename1.ui.Component
com.codename1.ui.Container
com.codename1.ui.Tabs

All Implemented Interfaces:
  `Animation, Editable, StyleListener, Iterable<Component>`

public class Tabs extends Container

A component that lets the user switch between a group of components by clicking on a tab with a given title and/or icon.

Tabs/components are added to a `Tabs` object by using the `addTab` and `insertTab` methods. A tab is represented by an index corresponding to the position it was added in, where the first tab has an index equal to 0 and the last tab has an index equal to the tab count minus 1.

The `Tabs` uses a `SingleSelectionModel` to represent the set of tab indices and the currently selected index. If the tab count is greater than 0, then there will always be a selected index, which by default will be initialized to the first tab. If the tab count is 0, then the selected index will be -1.

A simple `Tabs` sample looks a bit like this:

    Form hi = new Form("Tabs", new BorderLayout());

    Tabs t = new Tabs();
    Style s = UIManager.getInstance().getComponentStyle("Tab");
    FontImage icon1 = FontImage.createMaterial(FontImage.MATERIAL_QUESTION_ANSWER, s);

    Container container1 = BoxLayout.encloseY(new Label("Label1"), new Label("Label2"));
    t.addTab("Tab1", icon1, container1);
    t.addTab("Tab2", new SpanLabel("Some text directly in the tab"));

    hi.add(BorderLayout.CENTER, t);

The `Tabs` allows swiping on the X-axis (by default) but also on the Y-axis (demo video):

    Form hi = new Form("Test swipe on tabs", BorderLayout.absolute());
    Tabs tabs = new Tabs();
    tabs.addTab("First", new Label("First tab"));
    tabs.addTab("Second", new Label("Second tab"));

    ButtonGroup btnGroup = new ButtonGroup();
    RadioButton swipeXBtn = RadioButton.createToggle("Swipe on X-Axis", btnGroup);
    RadioButton swipeYBtn = RadioButton.createToggle("Swipe on Y-Axis", btnGroup);
    btnGroup.setSelected(swipeXBtn);

    swipeXBtn.addActionListener(l -> tabs.setSwipeOnXAxis(true));
    swipeYBtn.addActionListener(l -> tabs.setSwipeOnXAxis(false));

    hi.add(BorderLayout.NORTH, GridLayout.encloseIn(2, swipeXBtn, swipeYBtn));
    hi.add(BorderLayout.CENTER, tabs);

- ## Field Summary

  ### Fields inherited from class Component

  `BASELINE, BOTTOM, BRB_CENTER_OFFSET, BRB_CONSTANT_ASCENT, BRB_CONSTANT_DESCENT, BRB_OTHER, CENTER, CROSSHAIR_CURSOR, DEFAULT_CURSOR, DRAG_REGION_IMMEDIATELY_DRAG_X, DRAG_REGION_IMMEDIATELY_DRAG_XY, DRAG_REGION_IMMEDIATELY_DRAG_Y, DRAG_REGION_LIKELY_DRAG_X, DRAG_REGION_LIKELY_DRAG_XY, DRAG_REGION_LIKELY_DRAG_Y, DRAG_REGION_NOT_DRAGGABLE, DRAG_REGION_POSSIBLE_DRAG_X, DRAG_REGION_POSSIBLE_DRAG_XY, DRAG_REGION_POSSIBLE_DRAG_Y, E_RESIZE_CURSOR, HAND_CURSOR, LEFT, MOVE_CURSOR, N_RESIZE_CURSOR, NE_RESIZE_CURSOR, NW_RESIZE_CURSOR, RIGHT, S_RESIZE_CURSOR, SE_RESIZE_CURSOR, SW_RESIZE_CURSOR, TEXT_CURSOR, TOP, W_RESIZE_CURSOR, WAIT_CURSOR`

- ## Constructor Summary

  Constructors
  Constructor
  Description
  `Tabs()`
  Creates an empty `TabbedPane` with a default tab placement of `Component.TOP`.
  `Tabs(int tabP)`
  Creates an empty `TabbedPane` with the specified tab placement of either: `Component.TOP`, `Component.BOTTOM`, `Component.LEFT`, or `Component.RIGHT`.

- ## Method Summary

  Modifier and Type
  Method
  Description
  `void`
  `addSelectionListener(SelectionListener listener)`
  Adds a selection listener to the tabs.
  `void`
  `addTab(Button tab, Component component)`
  Adds a `component` represented by a `button`.
  `Tabs`
  `addTab(String title, char materialIcon, float iconSize, Component component)`
  Adds a `component` represented by a `title` and/or `icon`, either of which can be `null`.
  `Tabs`
  `addTab(String title, char icon, Font font, float iconSize, Component component)`
  Adds a `component` represented by a `title` and/or `icon`, either of which can be `null`.
  `void`
  `addTab(String title, Component component)`
  Adds a `component` represented by a `title` and no `icon`.
  `void`
  `addTab(String title, Image icon, Component component)`
  Adds a `component` represented by a `title` and/or `icon`, either of which can be `null`.
  `Tabs`
  `addTab(String title, Image icon, Image pressedIcon, Component component)`
  Adds a `component` represented by a `title` and/or `icon`, either of which can be `null`.
  `void`
  `addTabsFocusListener(FocusListener listener)`
  Adds a focus listener to the tabs buttons
  `boolean`
  `animate()`
  Allows the animation to reduce "repaint" calls when it returns false.
  `protected void`
  `bindTabActionListener(Component tab, ActionListener l)`
  Binds an action listener to the tab component.
  `protected Component`
  `createTab(String title, Font font, char icon, float size)`
  Creates a tab component by default this is a RadioButton but subclasses can use this to return anything
  `protected Component`
  `createTab(String title, Image icon)`
  Creates a tab component by default this is a RadioButton but subclasses can use this to return anything
  `protected Motion`
  `createTabSlideMotion(int start, int end)`
  Allows developers to customize the motion object for the slide effect to provide a linear slide effect.
  `protected void`
  `deinitialize()`
  Invoked to indicate that the component initialization is being reversed since the component was detached from the container hierarchy.
  `Container`
  `getContentPane()`
  This method retrieves the Tabs content pane
  `String[]`
  `getPropertyNames()`
  A component may expose mutable property names for a UI designer to manipulate, this API is designed for usage internally by the GUI builder code
  `String[]`
  `getPropertyTypeNames()`
  This method is here to workaround an XMLVM array type bug where property types aren't identified properly, it returns the names of the types using the following type names: String,int,double,long,byte,short,char,String[],String[][],byte[],Image,Image[],Object[],ListModel,ListCellRenderer
  `Class[]`
  `getPropertyTypes()`
  Matches the property names method (see that method for further details).
  `Object`
  `getPropertyValue(String name)`
  Returns the current value of the property name, this method is used by the GUI builder
  `Component`
  `getSelectedComponent()`
  Returns the component associated with the tab at the given index
  `int`
  `getSelectedIndex()`
  Returns the currently selected index for this tabbedpane.
  `Component`
  `getTabComponentAt(int index)`
  Returns the tab at `index`.
  `int`
  `getTabCount()`
  Returns the number of tabs in this `tabbedpane`.
  `Image`
  `getTabIcon(int index)`
  Returns the icon of the tab at the given index
  `protected Image`
  `getTabIcon(Component tab)`
  Returns the icon of the tab component.
  `int`
  `getTabPlacement()`
  Returns the placement of the tabs for this tabbedpane.
  `Container`
  `getTabsContainer()`
  This method retrieves the Tabs buttons Container
  `Image`
  `getTabSelectedIcon(int index)`
  Returns the icon of the tab at the given index
  `protected Image`
  `getTabSelectedIcon(Component tab)`
  Returns the selected icon of the tab component.
  `int`
  `getTabTextPosition()`
  Returns The position of the text relative to the icon
  `String`
  `getTabTitle(int index)`
  Returns the title of the tab at the given index
  `protected String`
  `getTabTitle(Component tab)`
  Returns the title of the tab component.
  `String`
  `getTabUIID()`
  The UIID for a tab component which defaults to Tab
  `void`
  `hideTabs()`
  Hide the tabs bar
  `int`
  `indexOfComponent(Component component)`
  Returns the index of the tab for the specified component.
  `protected void`
  `initComponent()`
  Allows subclasses to bind functionality that relies on fully initialized and "ready for action" component state
  `protected void`
  `initLaf(UIManager manager)`
  This method initializes the Component defaults constants
  `void`
  `insertTab(Component tab, Component component, int index)`
  Inserts a `component`, at `index`, represented by a `button` Uses java.util.Vector internally, see `insertElementAt` for details of insertion conventions.
  `void`
  `insertTab(String title, char icon, Font font, float iconSize, Component component, int index)`
  Inserts a `component`, at `index`, represented by a `title` and/or `icon`, either of which may be `null`.
  `void`
  `insertTab(String title, Image icon, Component component, int index)`
  Inserts a `component`, at `index`, represented by a `title` and/or `icon`, either of which may be `null`.
  `boolean`
  `isAnimateTabSelection()`
  Indicates whether clicking on a tab button should result in an animation to the selected tab or an immediate switch
  `boolean`
  `isChangeTabContainerStyleOnFocus()`
  Indicates that the tabs container should have its style changed to the selected style when one of the tabs has focus this allows incorporating it into the theme of the application
  `boolean`
  `isChangeTabOnFocus()`
  Indicates that a tab should change when the focus changes without the user physically pressing a button
  `boolean`
  `isEagerSwipeMode()`
  Allows marking tabs as swipe "eager" which instantly triggers swipe on movement rather than threshold the swipe.
  `boolean`
  `isSwipeActivated()`
  Returns true if the swipe between tabs is activated, this is relevant for touch devices only
  `boolean`
  `isSwipeOnXAxis()`
  Returns `true` if the swipe is on the X-Axis, `false` if the swipe is on the Y-Axis.
  `void`
  `refreshTheme(boolean merge)`
  Makes sure the component is up to date with the current theme, ONLY INVOKE THIS METHOD IF YOU CHANGED THE THEME!
  `void`
  `removeSelectionListener(SelectionListener listener)`
  Removes a selection Listener from the tabs
  `void`
  `removeTabAt(int index)`
  Removes the tab at `index`.
  `void`
  `removeTabsFocusListener(FocusListener listener)`
  Removes a foucs Listener from the tabs buttons
  `protected void`
  `selectTab(Component tab)`
  Invoked to select a specific tab, this method should be overriden for subclasses overriding createTab
  `void`
  `setAnimateTabSelection(boolean animateTabSelection)`
  Indicates whether clicking on a tab button should result in an animation to the selected tab or an immediate switch
  `void`
  `setChangeTabContainerStyleOnFocus(boolean changeTabContainerStyleOnFocus)`
  Indicates that the tabs container should have its style changed to the selected style when one of the tabs has focus this allows incorporating it into the theme of the application
  `void`
  `setChangeTabOnFocus(boolean changeTabOnFocus)`
  Indicates that a tab should change when the focus changes without the user physically pressing a button
  `void`
  `setEagerSwipeMode(boolean eagerSwipeMode)`
  Allows marking tabs as swipe "eager" which instantly triggers swipe on movement rather than threshold the swipe.
  `String`
  `setPropertyValue(String name, Object value)`
  Sets a new value to the given property, returns an error message if failed and null if successful.
  `void`
  `setSelectedIndex(int index)`
  Sets the selected index for this tabbedpane.
  `void`
  `setSelectedIndex(int index, boolean slideToSelected)`
  Sets the currently selected index in the tabs component
  `void`
  `setSwipeActivated(boolean swipeActivated)`
  Setter method for swipe mode
  `void`
  `setSwipeOnXAxis(boolean b)`
  It defaults to `true`; you can set it to `false` for use cases like the one discussed here: Realize a set of Containers that are browsable with a finger, like a deck of cards
  `void`
  `setTabPlacement(int tabPlacement)`
  Sets the tab placement for this tabbedpane.
  `void`
  `setTabsContentGap(int tabsGap)`
  This method allows setting the Tabs content pane spacing (right and left), This can be used to create an effect where the selected tab is smaller and the right and left tabs are visible on the sides
  `void`
  `setTabSelectedIcon(int index, Image icon)`
  Sets the selected icon of the tab at the given index
  `protected void`
  `setTabSelectedIcon(Component tab, Image icon)`
  Sets the selected icon of the tab.
  `void`
  `setTabTextPosition(int textPosition)`
  Sets the position of the text relative to the icon if exists
  `protected void`
  `setTabTitle(Component tab, String title, Image icon)`
  Updates the tabs title .
  `void`
  `setTabTitle(String title, Image icon, int index)`
  Updates the information about the tab details
  `void`
  `setTabUIID(String tabUIID)`
  The UIID for a tab button which defaults to Tab.
  `protected void`
  `setTextPosition(Component tabComponent, int textPosition)`
  Invokes set text position on the given tab, the tab should be a toggle button radio by default but can be anything
  `protected boolean`
  `shouldBlockSideSwipe()`
  A component that might need side swipe such as the slider could block it from being used for some other purpose when on top of said component.
  `void`
  `showTabs()`
  Show the tabs bar if it was hidden
  `String`
  `toString()`
  Overriden to return a useful value for debugging purposes

  ### Methods inherited from class Container

  `add, add, add, add, add, add, addAll, addComponent, addComponent, addComponent, addComponent, animateHierarchy, animateHierarchyAndWait, animateHierarchyFade, animateHierarchyFadeAndWait, animateLayout, animateLayoutAndWait, animateLayoutFade, animateLayoutFadeAndWait, animateUnlayout, animateUnlayoutAndWait, applyRTL, calcPreferredSize, cancelRepaints, clearClientProperties, constrainHeightWhenScrollable, constrainWidthWhenScrollable, contains, createAnimateHierarchy, createAnimateHierarchyFade, createAnimateLayout, createAnimateLayoutFade, createAnimateLayoutFadeAndWait, createAnimateMotion, createAnimateUnlayout, createReplaceTransition, dragInitiated, drop, encloseIn, encloseIn, findDropTargetAt, findFirstFocusable, fireClicked, flushReplace, forceRevalidate, getBottomGap, getChildrenAsList, getClosestComponentTo, getComponentAt, getComponentAt, getComponentCount, getComponentIndex, getGridPosX, getGridPosY, getLayout, getLayoutHeight, getLayoutWidth, getLeadComponent, getLeadParent, getResponderAt, getSafeAreaRoot, getScrollIncrement, getSideGap, getUIManager, invalidate, isEnabled, isSafeArea, isSafeAreaRoot, isScrollableX, isScrollableY, isSelectableInteraction, isSurface, iterator, iterator, keyPressed, keyReleased, layoutContainer, morph, morphAndWait, paint, paintComponentBackground, paintGlass, paramString, pointerPressed, removeAll, removeComponent, replace, replace, replaceAndWait, replaceAndWait, replaceAndWait, revalidate, revalidateLater, revalidateWithAnimationSafety, scrollComponentToVisible, setCellRenderer, setEnabled, setLayout, setLeadComponent, setSafeArea, setSafeAreaRoot, setScrollable, setScrollableX, setScrollableY, setScrollIncrement, setShouldCalcPreferredSize, setShouldLayout, setUIManager, updateTabIndices`

  ### Methods inherited from class Component

  `addDragFinishedListener, addDragOverListener, addDropListener, addFocusListener, addLongPressListener, addPointerDraggedListener, addPointerPressedListener, addPointerReleasedListener, addPullToRefresh, addScrollListener, addStateChangeListener, announceForAccessibility, bindProperty, blocksSideSwipe, calcScrollSize, contains, containsOrOwns, createStyleAnimation, deinitializeCustomStyle, dragEnter, dragExit, dragFinished, draggingOver, drawDraggedImage, focusGained, focusLost, getAbsoluteX, getAbsoluteY, getAccessibilityText, getAllStyles, getAnimationManager, getBaseline, getBaselineResizeBehavior, getBindablePropertyNames, getBindablePropertyTypes, getBorder, getBoundPropertyValue, getBounds, getBounds, getClientProperty, getCloudBoundProperty, getCloudDestinationProperty, getComponentForm, getComponentState, getCursor, getDefaultDragTransparency, getDirtyRegion, getDisabledStyle, getDraggedx, getDraggedy, getDragImage, getDragRegionStatus, getDragSpeed, getDragTransparency, getEditingDelegate, getHeight, getInlineAllStyles, getInlineDisabledStyles, getInlinePressedStyles, getInlineSelectedStyles, getInlineStylesTheme, getInlineUnselectedStyles, getInnerHeight, getInnerPreferredH, getInnerPreferredW, getInnerWidth, getInnerX, getInnerY, getLabelForComponent, getName, getNativeOverlay, getNextFocusDown, getNextFocusLeft, getNextFocusRight, getNextFocusUp, getOuterHeight, getOuterPreferredH, getOuterPreferredW, getOuterWidth, getOuterX, getOuterY, getOwner, getParent, getPreferredH, getPreferredSize, getPreferredSizeStr, getPreferredTabIndex, getPreferredW, getPressedStyle, getSameHeight, getSameWidth, getScrollable, getScrollAnimationSpeed, getScrollDimension, getScrollOpacity, getScrollOpacityChangeSpeed, getScrollX, getScrollY, getSelectCommandText, getSelectedRect, getSelectedStyle, getStyle, getTabIndex, getTensileLength, getTextSelectionSupport, getTooltip, getUIID, getUnselectedStyle, getVisibleBounds, getVisibleBounds, getWidth, getX, getY, growShrink, handlesInput, hasFixedPreferredSize, hasFocus, hideNativeOverlay, initCustomStyle, initDisabledStyle, initPressedStyle, initSelectedStyle, initUnselectedStyle, installDefaultPainter, isAlwaysTensile, isBlockLead, isCellRenderer, isChildOf, isDragActivated, isDragAndDropOperation, isDraggable, isDragRegion, isDropTarget, isEditable, isEditing, isFlatten, isFocusable, isGrabsPointerEvents, isHidden, isHidden, isHideInLandscape, isHideInPortrait, isIgnorePointerEvents, isInClippingRegion, isInitialized, isOpaque, isOwnedBy, isPinchBlocksDragAndDrop, isRippleEffect, isRTL, isScrollable, isScrollVisible, isSetCursorSupported, isSmoothScrolling, isSnapToGrid, isStickyDrag, isTactileTouch, isTactileTouch, isTensileDragEnabled, isTraversable, isVisible, keyRepeated, laidOut, longKeyPress, longPointerPress, onScrollX, onScrollY, onSetFocusable, paintBackground, paintBackgrounds, paintBorder, paintBorderBackground, paintComponent, paintComponent, paintIntersectingComponentsAbove, paintLock, paintLockRelease, paintRippleOverlay, paintScrollbars, paintScrollbarX, paintScrollbarY, paintShadows, parsePreferredSize, pinch, pinch, pinchReleased, pointerDragged, pointerDragged, pointerHover, pointerHoverPressed, pointerHoverReleased, pointerPressed, pointerReleased, pointerReleased, putClientProperty, refreshTheme, refreshTheme, remove, removeDragFinishedListener, removeDragOverListener, removeDropListener, removeFocusListener, removeLongPressListener, removePointerDraggedListener, removePointerPressedListener, removePointerReleasedListener, removeScrollListener, removeStateChangeListener, repaint, repaint, requestFocus, resetFocusable, respondsToPointerEvents, scrollRectToVisible, scrollRectToVisible, setAccessibilityText, setAlwaysTensile, setBlockLead, setBoundPropertyValue, setCloudBoundProperty, setCloudDestinationProperty, setComponentState, setCursor, setDefaultDragTransparency, setDirtyRegion, setDisabledStyle, setDraggable, setDragTransparency, setDropTarget, setEditingDelegate, setFlatten, setFocus, setFocusable, setGrabsPointerEvents, setHandlesInput, setHeight, setHidden, setHidden, setHideInLandscape, setHideInPortrait, setIgnorePointerEvents, setInitialized, setInlineAllStyles, setInlineDisabledStyles, setInlinePressedStyles, setInlineSelectedStyles, setInlineStylesTheme, setInlineUnselectedStyles, setIsScrollVisible, setLabelForComponent, setName, setNextFocusDown, setNextFocusLeft, setNextFocusRight, setNextFocusUp, setOpaque, setOwner, setPinchBlocksDragAndDrop, setPreferredH, setPreferredSize, setPreferredSizeStr, setPreferredTabIndex, setPreferredW, setPressedStyle, setRippleEffect, setRTL, setSameHeight, setSameSize, setSameWidth, setScrollAnimationSpeed, setScrollOpacityChangeSpeed, setScrollSize, setScrollVisible, setScrollX, setScrollY, setSelectCommandText, setSelectedStyle, setSize, setSmoothScrolling, setSnapToGrid, setTabIndex, setTactileTouch, setTensileDragEnabled, setTensileLength, setTooltip, setTraversable, setUIID, setUIID, setUIIDFinal, setUnselectedStyle, setVisible, setWidth, setX, setY, shouldBlockSideSwipeLeft, shouldBlockSideSwipeRight, shouldRenderComponentSelection, showNativeOverlay, startEditingAsync, stopEditing, stripMarginAndPadding, styleChanged, toImage, unbindProperty, updateNativeOverlay, visibleBoundsContains`

  ### Methods inherited from class Object

  `clone, equals, getClass, hashCode, notify, notifyAll, wait, wait, wait`

- ## Constructor Details

  - ### Tabs

    public Tabs()
    Creates an empty `TabbedPane` with a default tab placement of `Component.TOP`.

  - ### Tabs

    public Tabs(int tabP)

    Creates an empty `TabbedPane` with the specified tab placement of either: `Component.TOP`, `Component.BOTTOM`, `Component.LEFT`, or `Component.RIGHT`.

    ###### Parameters

    - `tabP`: the placement for the tabs relative to the content

- ## Method Details

  - ### shouldBlockSideSwipe

    protected boolean shouldBlockSideSwipe()
    Description copied from class: `Component`
    A component that might need side swipe such as the slider could block it from being used for some other purpose when on top of said component.
    Overrides:
      `shouldBlockSideSwipe` in class `Component`

  - ### initLaf

    protected void initLaf(UIManager manager)
    This method initializes the Component defaults constants
    Overrides:
      `initLaf` in class `Container`

  - ### refreshTheme

    public void refreshTheme(boolean merge)

    Makes sure the component is up to date with the current theme, ONLY INVOKE THIS METHOD IF YOU CHANGED THE THEME!

    ###### Parameters

    - `merge`: indicates if the current styles should be merged with the new styles
    Overrides:
      `refreshTheme` in class `Container`

  - ### deinitialize

    protected void deinitialize()
    Invoked to indicate that the component initialization is being reversed since the component was detached from the container hierarchy. This allows the component to deregister animators and cleanup after itself. This method is the opposite of the initComponent() method.
    Overrides:
      `deinitialize` in class `Component`

  - ### initComponent

    protected void initComponent()
    Allows subclasses to bind functionality that relies on fully initialized and "ready for action" component state
    Overrides:
      `initComponent` in class `Component`

  - ### animate

    public boolean animate()

    Allows the animation to reduce "repaint" calls when it returns false. It is called once for every frame. Frames are defined by the `com.codename1.ui.Display` class.

    ###### Returns

    true if a repaint is desired or false if no repaint is necessary

    Specified by:
      `animate` in interface `Animation`
    Overrides:
      `animate` in class `Component`

  - ### setTextPosition

    protected void setTextPosition(Component tabComponent, int textPosition)

    Invokes set text position on the given tab, the tab should be a toggle button radio by default but can be anything

    ###### Parameters

    - `tabComponent`: the component representing the tab

    - `textPosition`: the text position

  - ### getTabTextPosition

    public int getTabTextPosition()

    Returns The position of the text relative to the icon

    ###### Returns

    The position of the text relative to the icon, one of: LEFT, RIGHT, BOTTOM, TOP

    ###### See also

    - #LEFT

    - #RIGHT

    - #BOTTOM

    - #TOP

  - ### setTabTextPosition

    public void setTabTextPosition(int textPosition)

    Sets the position of the text relative to the icon if exists

    ###### Parameters

    - `textPosition`: alignment value (LEFT, RIGHT, BOTTOM or TOP)

    ###### See also

    - #LEFT

    - #RIGHT

    - #BOTTOM

    - #TOP

  - ### addTab

    public void addTab(String title, Image icon, Component component)

    Adds a `component` represented by a `title` and/or `icon`, either of which can be `null`. Cover method for `insertTab`.

    ###### Parameters

    - `title`: the title to be displayed in this tab

    - `icon`: the icon to be displayed in this tab

    - `component`: the component to be displayed when this tab is clicked

    ###### See also

    - #insertTab

    - #removeTabAt

  - ### addTab

    public Tabs addTab(String title, Image icon, Image pressedIcon, Component component)

    Adds a `component` represented by a `title` and/or `icon`, either of which can be `null`. Cover method for `insertTab`.

    ###### Parameters

    - `title`: the title to be displayed in this tab

    - `icon`: the icon to be displayed in this tab

    - `pressedIcon`: the icon shown when the tab is selected

    - `component`: the component to be displayed when this tab is clicked

    ###### Returns

    this so these calls can be chained

    ###### See also

    - #insertTab

    - #removeTabAt

  - ### addTab

    public Tabs addTab(String title, char materialIcon, float iconSize, Component component)

    Adds a `component` represented by a `title` and/or `icon`, either of which can be `null`. Cover method for `insertTab`.

    ###### Parameters

    - `title`: the title to be displayed in this tab

    - `materialIcon`: one of the material design icon constants from `com.codename1.ui.FontImage`

    - `iconSize`: icon size in millimeters

    - `component`: the component to be displayed when this tab is clicked

    ###### Returns

    this so these calls can be chained

    ###### See also

    - #insertTab

    - #removeTabAt

  - ### addTab

    public Tabs addTab(String title, char icon, Font font, float iconSize, Component component)

    Adds a `component` represented by a `title` and/or `icon`, either of which can be `null`. Cover method for `insertTab`.

    ###### Parameters

    - `title`: the title to be displayed in this tab

    - `icon`: an icon from the font

    - `font`: the font for the icon

    - `iconSize`: icon size in millimeters

    - `component`: the component to be displayed when this tab is clicked

    ###### Returns

    this so these calls can be chained

    ###### See also

    - #insertTab

    - #removeTabAt

  - ### addTab

    public void addTab(String title, Component component)

    Adds a `component` represented by a `title` and no `icon`. Cover method for `insertTab`.

    ###### Parameters

    - `title`: the title to be displayed in this tab

    - `component`: the component to be displayed when this tab is clicked

    ###### See also

    - #insertTab

    - #removeTabAt

  - ### addTab

    public void addTab(Button tab, Component component)

    Adds a `component` represented by a `button`. Cover method for `insertTab`. The Button styling will be associated with "Tab" UIID.

    ###### Parameters

    - `tab`: represents the tab on top

    - `component`: the component to be displayed when this tab is clicked

    ###### Deprecated

    should use radio button as an argument

    ###### See also

    - #insertTab

    - #removeTabAt

  - ### createTab

    protected Component createTab(String title, Font font, char icon, float size)

    Creates a tab component by default this is a RadioButton but subclasses can use this to return anything

    ###### Parameters

    - `title`: the title of the tab

    - `icon`: an icon from the font

    - `font`: the font for the icon

    ###### Returns

    component instance

  - ### createTab

    protected Component createTab(String title, Image icon)

    Creates a tab component by default this is a RadioButton but subclasses can use this to return anything

    ###### Parameters

    - `title`: the title of the tab

    - `icon`: the icon of the tab

    ###### Returns

    component instance

  - ### insertTab

    public void insertTab(String title, Image icon, Component component, int index)

    Inserts a `component`, at `index`, represented by a `title` and/or `icon`, either of which may be `null`. Uses java.util.Vector internally, see `insertElementAt` for details of insertion conventions.

    ###### Parameters

    - `title`: the title to be displayed in this tab

    - `icon`: the icon to be displayed in this tab

    - `component`: The component to be displayed when this tab is clicked.

    - `index`: the position to insert this new tab

    ###### See also

    - #addTab

    - #removeTabAt

  - ### insertTab

    public void insertTab(String title, char icon, Font font, float iconSize, Component component, int index)

    Inserts a `component`, at `index`, represented by a `title` and/or `icon`, either of which may be `null`. Uses java.util.Vector internally, see `insertElementAt` for details of insertion conventions.

    ###### Parameters

    - `title`: the title to be displayed in this tab

    - `icon`: an icon from the font

    - `font`: the font for the icon

    - `component`: The component to be displayed when this tab is clicked.

    - `index`: the position to insert this new tab

    ###### See also

    - #addTab

    - #removeTabAt

  - ### insertTab

    public void insertTab(Component tab, Component component, int index)

    Inserts a `component`, at `index`, represented by a `button` Uses java.util.Vector internally, see `insertElementAt` for details of insertion conventions. The Button styling will be associated with "Tab" UIID.

    ###### Parameters

    - `tab`: represents the tab on top

    - `component`: The component to be displayed when this tab is clicked.

    - `index`: the position to insert this new tab

    ###### Deprecated

    should use radio button as an argument

    ###### See also

    - #addTab

    - #removeTabAt

  - ### bindTabActionListener

    protected void bindTabActionListener(Component tab, ActionListener l)

    Binds an action listener to the tab component. this method should be used when overriding createTab

    ###### Parameters

    - `tab`: the tab component

    - `l`: the listener

  - ### setTabTitle

    public void setTabTitle(String title, Image icon, int index)

    Updates the information about the tab details

    ###### Parameters

    - `title`: the title to be displayed in this tab

    - `icon`: the icon to be displayed in this tab

    - `index`: the position to insert this new tab

  - ### setTabTitle

    protected void setTabTitle(Component tab, String title, Image icon)

    Updates the tabs title . This method should be used when overriding createTab

    ###### Parameters

    - `tab`: the tab component

    - `title`: the title

    - `icon`: the new icon

  - ### getTabTitle

    public String getTabTitle(int index)

    Returns the title of the tab at the given index

    ###### Parameters

    - `index`: index for the tab

    ###### Returns

    label of the tab at the given index

  - ### getTabTitle

    protected String getTabTitle(Component tab)

    Returns the title of the tab component. This method should be used when overriding createTab

    ###### Parameters

    - `tab`: the tab component

    ###### Returns

    label of the tab

  - ### getTabIcon

    protected Image getTabIcon(Component tab)

    Returns the icon of the tab component. This method should be used when overriding createTab

    ###### Parameters

    - `tab`: the tab component

    ###### Returns

    icon of the tab

  - ### getTabIcon

    public Image getTabIcon(int index)

    Returns the icon of the tab at the given index

    ###### Parameters

    - `index`: index for the tab

    ###### Returns

    icon of the tab at the given index

  - ### getTabSelectedIcon

    protected Image getTabSelectedIcon(Component tab)

    Returns the selected icon of the tab component. This method should be used when overriding createTab

    ###### Parameters

    - `tab`: the tab component

    ###### Returns

    icon of the tab

  - ### getTabSelectedIcon

    public Image getTabSelectedIcon(int index)

    Returns the icon of the tab at the given index

    ###### Parameters

    - `index`: index for the tab

    ###### Returns

    icon of the tab at the given index

  - ### setTabSelectedIcon

    public void setTabSelectedIcon(int index, Image icon)

    Sets the selected icon of the tab at the given index

    ###### Parameters

    - `index`: index for the tab

    - `icon`: of the tab at the given index

  - ### setTabSelectedIcon

    protected void setTabSelectedIcon(Component tab, Image icon)

    Sets the selected icon of the tab. This method should be used when overriding createTab

    ###### Parameters

    - `tab`: the tab component

    - `icon`: of the tab

  - ### removeTabAt

    public void removeTabAt(int index)

    Removes the tab at `index`. After the component associated with `index` is removed, its visibility is reset to true to ensure it will be visible if added to other containers.

    ###### Parameters

    - `index`: the index of the tab to be removed

    ###### Throws

    - `IndexOutOfBoundsException`: @throws IndexOutOfBoundsException if index is out of range (index = tab count)

    ###### See also

    - #addTab

    - #insertTab

  - ### getTabComponentAt

    public Component getTabComponentAt(int index)

    Returns the tab at `index`.

    ###### Parameters

    - `index`: the index of the tab to be removed

    ###### Returns

    the component at the given tab location

    ###### Throws

    - `IndexOutOfBoundsException`: @throws IndexOutOfBoundsException if index is out of range (index = tab count)

    ###### See also

    - #addTab

    - #insertTab

  - ### indexOfComponent

    public int indexOfComponent(Component component)

    Returns the index of the tab for the specified component. Returns -1 if there is no tab for this component.

    ###### Parameters

    - `component`: the component for the tab

    ###### Returns

    Returns:
      the first tab which matches this component, or -1 if there is no tab for this component

  - ### getTabCount

    public int getTabCount()

    Returns the number of tabs in this `tabbedpane`.

    ###### Returns

    an integer specifying the number of tabbed pages

  - ### getSelectedIndex

    public int getSelectedIndex()

    Returns the currently selected index for this tabbedpane. Returns -1 if there is no currently selected tab.

    ###### Returns

    the index of the selected tab

  - ### setSelectedIndex

    public void setSelectedIndex(int index)

    Sets the selected index for this tabbedpane. The index must be a valid tab index.

    ###### Parameters

    - `index`: the index to be selected

    ###### Throws

    - `IndexOutOfBoundsException`: @throws IndexOutOfBoundsException if index is out of range (index = tab count)

  - ### getSelectedComponent

    public Component getSelectedComponent()

    Returns the component associated with the tab at the given index

    ###### Returns

    the component is now showing in the tabbed pane

  - ### addTabsFocusListener

    public void addTabsFocusListener(FocusListener listener)

    Adds a focus listener to the tabs buttons

    ###### Parameters

    - `listener`: FocusListener

    ###### Deprecated

    use addSelectionListener instead

  - ### removeTabsFocusListener

    public void removeTabsFocusListener(FocusListener listener)

    Removes a foucs Listener from the tabs buttons

    ###### Parameters

    - `listener`: FocusListener

    ###### Deprecated

    use addSelectionListener instead

  - ### addSelectionListener

    public void addSelectionListener(SelectionListener listener)

    Adds a selection listener to the tabs.

    ###### Parameters

    - `listener`: SelectionListener

  - ### removeSelectionListener

    public void removeSelectionListener(SelectionListener listener)

    Removes a selection Listener from the tabs

    ###### Parameters

    - `listener`: SelectionListener

  - ### toString

    public String toString()

    Overriden to return a useful value for debugging purposes

    ###### Returns

    a string representation of this component

    Overrides:
      `toString` in class `Component`

  - ### getTabPlacement

    public int getTabPlacement()

    Returns the placement of the tabs for this tabbedpane.

    ###### Returns

    the tab placement value

    ###### See also

    - #setTabPlacement

  - public void setTabPlacement(int tabPlacement)

    Sets the tab placement for this tabbedpane. Possible values are:

    - `Component.TOP`

    - `Component.BOTTOM`

    - `Component.LEFT`

    - `Component.RIGHT`

    The default value, if not set, is `Component.TOP`.

    ###### Parameters

    - `tabPlacement`: the placement for the tabs relative to the content

  - ### getContentPane

    public Container getContentPane()

    This method retrieves the Tabs content pane

    ###### Returns

    the content pane Container

  - ### getTabsContainer

    public Container getTabsContainer()

    This method retrieves the Tabs buttons Container

    ###### Returns

    the Tabs Container

  - ### setSelectedIndex

    public void setSelectedIndex(int index, boolean slideToSelected)

    Sets the currently selected index in the tabs component

    ###### Parameters

    - `index`: the index for the tab starting with tab 0.

    - `slideToSelected`: @param slideToSelected true to animate the transition to the new selection false to just move immediately

  - ### selectTab

    protected void selectTab(Component tab)

    Invoked to select a specific tab, this method should be overriden for subclasses overriding createTab

    ###### Parameters

    - `tab`: the tab

  - ### hideTabs

    public void hideTabs()
    Hide the tabs bar

  - ### showTabs

    public void showTabs()
    Show the tabs bar if it was hidden

  - ### isSwipeActivated

    public boolean isSwipeActivated()

    Returns true if the swipe between tabs is activated, this is relevant for touch devices only

    ###### Returns

    swipe activated flag

  - ### setSwipeActivated

    public void setSwipeActivated(boolean swipeActivated)

    Setter method for swipe mode

    ###### Parameters

    - `swipeActivated`

  - ### isChangeTabOnFocus

    public boolean isChangeTabOnFocus()

    Indicates that a tab should change when the focus changes without the user physically pressing a button

    ###### Returns

    the changeTabOnFocus

  - ### setChangeTabOnFocus

    public void setChangeTabOnFocus(boolean changeTabOnFocus)

    Indicates that a tab should change when the focus changes without the user physically pressing a button

    ###### Parameters

    - `changeTabOnFocus`: the changeTabOnFocus to set

  - ### isChangeTabContainerStyleOnFocus

    public boolean isChangeTabContainerStyleOnFocus()

    Indicates that the tabs container should have its style changed to the selected style when one of the tabs has focus this allows incorporating it into the theme of the application

    ###### Returns

    the changeTabContainerStyleOnFocus

  - ### setChangeTabContainerStyleOnFocus

    public void setChangeTabContainerStyleOnFocus(boolean changeTabContainerStyleOnFocus)

    Indicates that the tabs container should have its style changed to the selected style when one of the tabs has focus this allows incorporating it into the theme of the application

    ###### Parameters

    - `changeTabContainerStyleOnFocus`: the changeTabContainerStyleOnFocus to set

  - ### setTabsContentGap

    public void setTabsContentGap(int tabsGap)

    This method allows setting the Tabs content pane spacing (right and left), This can be used to create an effect where the selected tab is smaller and the right and left tabs are visible on the sides

    ###### Parameters

    - `tabsGap`: @param tabsGap the gap on the sides of the content in pixels, the value must be positive.

  - ### getTabUIID

    public String getTabUIID()

    The UIID for a tab component which defaults to Tab

    ###### Returns

    the tabUIID

  - ### setTabUIID

    public void setTabUIID(String tabUIID)

    The UIID for a tab button which defaults to Tab. Tab buttons used to have two separate styles for selected and unselected. This was later consolidated so the tabs behave as a single toggle button (radio button) however one thing that remained is a call to `setUIID` that is implicitly made to restore the original "Tab" style.

    Effectively Tabs invokes the `setUIID` call on the Tab switch so if you want to manipulate the tab UIID manually (have one red and one green tab) this is a problem..

    To enable such code add all the tabs then just just invoke `setTabUIID(null)` to disable this behavior.

    ###### Parameters

    - `tabUIID`: the tabUIID to set

  - ### isEagerSwipeMode

    public boolean isEagerSwipeMode()

    Allows marking tabs as swipe "eager" which instantly triggers swipe on movement rather than threshold the swipe.

    ###### Returns

    the eagerSwipeMode

  - ### setEagerSwipeMode

    public void setEagerSwipeMode(boolean eagerSwipeMode)

    Allows marking tabs as swipe "eager" which instantly triggers swipe on movement rather than threshold the swipe.

    ###### Parameters

    - `eagerSwipeMode`: the eagerSwipeMode to set

  - ### isAnimateTabSelection

    public boolean isAnimateTabSelection()

    Indicates whether clicking on a tab button should result in an animation to the selected tab or an immediate switch

    ###### Returns

    the animateTabSelection

  - ### setAnimateTabSelection

    public void setAnimateTabSelection(boolean animateTabSelection)

    Indicates whether clicking on a tab button should result in an animation to the selected tab or an immediate switch

    ###### Parameters

    - `animateTabSelection`: the animateTabSelection to set

  - ### createTabSlideMotion

    protected Motion createTabSlideMotion(int start, int end)

    Allows developers to customize the motion object for the slide effect to provide a linear slide effect. You can use the `tabsSlideSpeedInt` theme constant to define the time in milliseconds between releasing the swiped tab and reaching the next tab. This currently defaults to 200.

    ###### Parameters

    - `start`: start position

    - `end`: end position for the motion

    ###### Returns

    the motion object

  - ### isSwipeOnXAxis

    public boolean isSwipeOnXAxis()

    Returns `true` if the swipe is on the X-Axis, `false` if the swipe is on the Y-Axis.

    ###### Returns

    swipe direction flag

  - ### setSwipeOnXAxis

    public void setSwipeOnXAxis(boolean b)

    It defaults to `true`; you can set it to `false` for use cases like the one discussed here: Realize a set of Containers that are browsable with a finger, like a deck of cards

    Example of usage (demo video):

        Form hi = new Form("Test swipe on tabs", BorderLayout.absolute());
        Tabs tabs = new Tabs();
        ButtonGroup btnGroup = new ButtonGroup();
        Button swipeXBtn = RadioButton.createToggle("Swipe on X-Axis", btnGroup);
        Button swipeYBtn = RadioButton.createToggle("Swipe on Y-Axis", btnGroup);
        btnGroup.setSelected(0);

        swipeXBtn.addActionListener(l -> {
            tabs.setSwipeOnXAxis(true);
        });

        swipeYBtn.addActionListener(l -> {
            tabs.setSwipeOnXAxis(false);
        });

        hi.add(BorderLayout.NORTH, GridLayout.encloseIn(2, swipeXBtn, swipeYBtn));

        //tabs.hideTabs();
        hi.add(BorderLayout.CENTER, tabs);

        List cards = new ArrayList<>();
        for (int i=0; i<20; i++) {
            Container card = new Container(BoxLayout.y());
            card.getAllStyles().setBorder(Border.createLineBorder(CN.convertToPixels(1)/5, 0));
            card.addAll(FlowLayout.encloseCenter(new Label(FontImage.createMaterial(FontImage.MATERIAL_PERSON, "Label", 50.0f))), new Label("Card " + i));
            cards.add(card);
            tabs.addTab("tab " + i, card);
        }

        hi.show();

    ###### Parameters

    - `b`: `true` to set the swipe on the X-Axis, `false` to set the swipe on the Y-Axis

    ###### Since

    8.0

  - ### getPropertyNames

    public String[] getPropertyNames()

    A component may expose mutable property names for a UI designer to manipulate, this API is designed for usage internally by the GUI builder code

    ###### Returns

    the property names allowing mutation

    Overrides:
      `getPropertyNames` in class `Component`

  - ### getPropertyTypes

    public Class[] getPropertyTypes()

    Matches the property names method (see that method for further details).

    ###### Returns

    the types of the properties

    Overrides:
      `getPropertyTypes` in class `Component`

  - ### getPropertyTypeNames

    public String[] getPropertyTypeNames()

    This method is here to workaround an XMLVM array type bug where property types aren't identified properly, it returns the names of the types using the following type names: String,int,double,long,byte,short,char,String[],String[][],byte[],Image,Image[],Object[],ListModel,ListCellRenderer

    ###### Returns

    Array of type names

    Overrides:
      `getPropertyTypeNames` in class `Component`

  - ### getPropertyValue

    public Object getPropertyValue(String name)

    Returns the current value of the property name, this method is used by the GUI builder

    ###### Parameters

    - `name`: the name of the property

    ###### Returns

    the value of said property

    Overrides:
      `getPropertyValue` in class `Component`

  - ### setPropertyValue

    public String setPropertyValue(String name, Object value)

    Sets a new value to the given property, returns an error message if failed and null if successful. Notice that some builtin properties such as "$designMode" might be sent to components to indicate application state.

    ###### Parameters

    - `name`: the name of the property

    - `value`: new value for the property

    ###### Returns

    error message or null

    Overrides:
      `setPropertyValue` in class `Component`