Module javafx.controls
Package javafx.scene.control

## Class Tab

- java.lang.Object
- - javafx.scene.control.Tab

- All Implemented Interfaces:
    `Styleable`, `EventTarget`

      @DefaultProperty("content")
      @IDProperty("id")
      public class Tab
      extends Object
      implements EventTarget, Styleable

  Tabs are placed within a `TabPane`, where each tab represents a single 'page'.

  Tabs can contain any `Node` such as UI controls or groups of nodes added to a layout container.

  When the user clicks on a Tab in the TabPane the Tab content becomes visible to the user.

  Since:
    JavaFX 2.0

- - ### Property Summary

    Properties
    Type | Property | Description
    --- | --- | ---
    `BooleanProperty` | `closable` | The closable state for this tab.
    `ObjectProperty<Node>` | `content` | The content associated with the tab.
    `ObjectProperty<ContextMenu>` | `contextMenu` | The context menu associated with the tab.
    `ReadOnlyBooleanProperty` | `disabled` | Indicates whether or not this `Tab` is disabled.
    `BooleanProperty` | `disable` | Sets the disabled state of this tab.
    `ObjectProperty<Node>` | `graphic` | The graphic in the tab.
    `StringProperty` | `id` | The id of this tab.
    `ObjectProperty<EventHandler<Event>>` | `onClosed` | The event handler that is associated with the tab when the tab is closed.
    `ObjectProperty<EventHandler<Event>>` | `onCloseRequest` | Called when there is an external request to close this `Tab`.
    `ObjectProperty<EventHandler<Event>>` | `onSelectionChanged` | The event handler that is associated with a selection on the tab.
    `ReadOnlyBooleanProperty` | `selected` | The currently selected tab.
    `StringProperty` | `style` | The CSS style string associated to this tab.
    `ReadOnlyObjectProperty<TabPane>` | `tabPane` | The TabPane that contains this tab.
    `StringProperty` | `text` | The text shown in the tab.
    `ObjectProperty<Tooltip>` | `tooltip` | The tooltip associated with this tab.

  - ### Field Summary

    Fields
    Modifier and Type | Field | Description
    --- | --- | ---
    `static EventType<Event>` | `CLOSED_EVENT` | Called when a user closes this tab.
    `static EventType<Event>` | `SELECTION_CHANGED_EVENT` | Called when the tab becomes selected or unselected.
    `static EventType<Event>` | `TAB_CLOSE_REQUEST_EVENT` | Called when there is an external request to close this `Tab`.

  - ### Constructor Summary

    Constructors
    Constructor | Description
    --- | ---
    `Tab()` | Creates a tab with no title.
    `Tab​(String text)` | Creates a tab with a text title.
    `Tab​(String text, Node content)` | Creates a tab with a text title and the specified content node.

  - ### Method Summary

    Modifier and Type | Method | Description
    --- | --- | ---
    `EventDispatchChain` | `buildEventDispatchChain​(EventDispatchChain tail)` | Construct an event dispatch chain for this target.
    `BooleanProperty` | `closableProperty()` | The closable state for this tab.
    `ObjectProperty<Node>` | `contentProperty()` | The content associated with the tab.
    `ObjectProperty<ContextMenu>` | `contextMenuProperty()` | The context menu associated with the tab.
    `ReadOnlyBooleanProperty` | `disabledProperty()` | Indicates whether or not this `Tab` is disabled.
    `BooleanProperty` | `disableProperty()` | Sets the disabled state of this tab.
    `static List<CssMetaData<? extends Styleable,​?>>` | `getClassCssMetaData()` |
    `Node` | `getContent()` | The content associated with the tab.
    `ContextMenu` | `getContextMenu()` | The context menu associated with the tab.
    `List<CssMetaData<? extends Styleable,​?>>` | `getCssMetaData()` | The CssMetaData of this Styleable.
    `Node` | `getGraphic()` | The graphic shown in the tab.
    `String` | `getId()` | The id of this tab.
    `EventHandler<Event>` | `getOnClosed()` | The event handler that is associated with the tab when the tab is closed.
    `EventHandler<Event>` | `getOnCloseRequest()` | Gets the value of the property onCloseRequest.
    `EventHandler<Event>` | `getOnSelectionChanged()` | The event handler that is associated with a selection on the tab.
    `ObservableMap<Object,​Object>` | `getProperties()` | Returns an observable map of properties on this Tab for use primarily by application developers.
    `ObservableSet<PseudoClass>` | `getPseudoClassStates()` | Return the pseudo-class state of this Styleable.
    `String` | `getStyle()` | The CSS style string associated to this tab.
    `Styleable` | `getStyleableParent()` | Return the parent of this Styleable, or null if there is no parent.
    `ObservableList<String>` | `getStyleClass()` | A list of String identifiers which can be used to logically group Nodes, specifically for an external style engine.
    `TabPane` | `getTabPane()` | A reference to the TabPane that contains this tab instance.
    `String` | `getText()` | The text shown in the tab.
    `Tooltip` | `getTooltip()` | The tooltip associated with this tab.
    `String` | `getTypeSelector()` | The type of this `Styleable` that is to be used in selector matching.
    `Object` | `getUserData()` | Returns a previously set Object property, or null if no such property has been set using the `setUserData(java.lang.Object)` method.
    `ObjectProperty<Node>` | `graphicProperty()` | The graphic in the tab.
    `boolean` | `hasProperties()` | Tests if this Tab has properties.
    `StringProperty` | `idProperty()` | The id of this tab.
    `boolean` | `isClosable()` | Returns `true` if this tab is closable.
    `boolean` | `isDisable()` | Returns `true` if this tab is disable.
    `boolean` | `isDisabled()` | Returns true when the `Tab` `disable` is set to `true` or if the `TabPane` is disabled.
    `boolean` | `isSelected()` | Represents whether this tab is the currently selected tab, To change the selected Tab use `tabPane.getSelectionModel().select()`
    `ObjectProperty<EventHandler<Event>>` | `onClosedProperty()` | The event handler that is associated with the tab when the tab is closed.
    `ObjectProperty<EventHandler<Event>>` | `onCloseRequestProperty()` | Called when there is an external request to close this `Tab`.
    `ObjectProperty<EventHandler<Event>>` | `onSelectionChangedProperty()` | The event handler that is associated with a selection on the tab.
    `ReadOnlyBooleanProperty` | `selectedProperty()` | The currently selected tab.
    `void` | `setClosable​(boolean value)` | Sets `true` if the tab is closable.
    `void` | `setContent​(Node value)` | The content to show within the main TabPane area.
    `void` | `setContextMenu​(ContextMenu value)` | Specifies the context menu to show when the user right-clicks on the tab.
    `void` | `setDisable​(boolean value)` | Sets the disabled state of this tab.
    `void` | `setGraphic​(Node value)` | Sets the graphic to show in the tab to allow the user to differentiate between the function of each tab.
    `void` | `setId​(String value)` | Sets the id of this tab.
    `void` | `setOnClosed​(EventHandler<Event> value)` | Defines a function to be called when the tab is closed.
    `void` | `setOnCloseRequest​(EventHandler<Event> value)` | Sets the value of the property onCloseRequest.
    `void` | `setOnSelectionChanged​(EventHandler<Event> value)` | Defines a function to be called when a selection changed has occurred on the tab.
    `void` | `setStyle​(String value)` | A string representation of the CSS style associated with this tab.
    `void` | `setText​(String value)` | Sets the text to show in the tab to allow the user to differentiate between the function of each tab.
    `void` | `setTooltip​(Tooltip value)` | Specifies the tooltip to show when the user hovers over the tab.
    `void` | `setUserData​(Object value)` | Convenience method for setting a single Object property that can be retrieved at a later date.
    `StringProperty` | `styleProperty()` | The CSS style string associated to this tab.
    `ReadOnlyObjectProperty<TabPane>` | `tabPaneProperty()` | The TabPane that contains this tab.
    `StringProperty` | `textProperty()` | The text shown in the tab.
    `ObjectProperty<Tooltip>` | `tooltipProperty()` | The tooltip associated with this tab.

    - ### Methods inherited from class java.lang.Object

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

    - ### Methods inherited from interface javafx.css.Styleable

      `getStyleableNode`

- - ### Property Detail

    - #### id

          public final StringProperty idProperty

      The id of this tab.
      Returns:
        the id property of this tab

    - #### style

          public final StringProperty styleProperty

      The CSS style string associated to this tab.
      See Also:
        `getStyle()`, `setStyle(String)`

    - #### selected

          public final ReadOnlyBooleanProperty selectedProperty

      The currently selected tab.
      See Also:
        `isSelected()`

    - #### tabPane

          public final ReadOnlyObjectProperty<TabPane> tabPaneProperty

      The TabPane that contains this tab.
      See Also:
        `getTabPane()`

    - #### text

          public final StringProperty textProperty

      The text shown in the tab.
      See Also:
        `getText()`, `setText(String)`

    - #### graphic

          public final ObjectProperty<Node> graphicProperty

      The graphic in the tab.
      See Also:
        `getGraphic()`, `setGraphic(Node)`

    - #### content

          public final ObjectProperty<Node> contentProperty

      The content associated with the tab.

      See Also:
        `getContent()`, `setContent(Node)`

    - #### contextMenu

          public final ObjectProperty<ContextMenu> contextMenuProperty

      The context menu associated with the tab.
      See Also:
        `getContextMenu()`, `setContextMenu(ContextMenu)`

    - #### closable

          public final BooleanProperty closableProperty

      The closable state for this tab.
      See Also:
        `isClosable()`, `setClosable(boolean)`

    - #### onSelectionChanged

          public final ObjectProperty<EventHandler<Event>> onSelectionChangedProperty

      The event handler that is associated with a selection on the tab.
      See Also:
        `getOnSelectionChanged()`, `setOnSelectionChanged(EventHandler)`

    - #### onClosed

          public final ObjectProperty<EventHandler<Event>> onClosedProperty

      The event handler that is associated with the tab when the tab is closed.
      See Also:
        `getOnClosed()`, `setOnClosed(EventHandler)`

    - #### tooltip

          public final ObjectProperty<Tooltip> tooltipProperty

      The tooltip associated with this tab.
      See Also:
        `getTooltip()`, `setTooltip(Tooltip)`

    - #### disable

          public final BooleanProperty disableProperty

      Sets the disabled state of this tab. A disable tab is no longer interactive or traversable, but the contents remain interactive. A disable tab can be selected using `TabPane.getSelectionModel()`.
      Default value:
        false
      Since:
        JavaFX 2.2
      See Also:
        `isDisable()`, `setDisable(boolean)`

    - #### disabled

          public final ReadOnlyBooleanProperty disabledProperty

      Indicates whether or not this `Tab` is disabled. A `Tab` will become disabled if `disable` is set to `true` on either itself or if the `TabPane` is disabled.
      Default value:
        false
      Since:
        JavaFX 2.2
      See Also:
        `isDisabled()`

    - #### onCloseRequest

          public final ObjectProperty<EventHandler<Event>> onCloseRequestProperty

      Called when there is an external request to close this `Tab`. The installed event handler can prevent tab closing by consuming the received event.
      Since:
        JavaFX 8.0
      See Also:
        `getOnCloseRequest()`, `setOnCloseRequest(EventHandler)`

  - ### Field Detail

    - #### SELECTION_CHANGED_EVENT

          public static final EventType<Event> SELECTION_CHANGED_EVENT

      Called when the tab becomes selected or unselected.

    - #### CLOSED_EVENT

          public static final EventType<Event> CLOSED_EVENT

      Called when a user closes this tab. This is useful for freeing up memory.

    - #### TAB_CLOSE_REQUEST_EVENT

          public static final EventType<Event> TAB_CLOSE_REQUEST_EVENT

      Called when there is an external request to close this `Tab`. The installed event handler can prevent tab closing by consuming the received event.
      Since:
        JavaFX 8.0

  - ### Constructor Detail

    - #### Tab

          public Tab()

      Creates a tab with no title.

    - #### Tab

          public Tab​(String text)

      Creates a tab with a text title.
      Parameters:
        `text` - The title of the tab.

    - #### Tab

          public Tab​(String text,
                     Node content)

      Creates a tab with a text title and the specified content node.
      Parameters:
        `text` - The title of the tab.
        `content` - The content of the tab.
      Since:
        JavaFX 8u40

  - ### Method Detail

    - #### setId

          public final void setId​(String value)

      Sets the id of this tab. This simple string identifier is useful for finding a specific Tab within the `TabPane`. The default value is `null`.
      Parameters:
        `value` - the id of this tab

    - #### getId

          public final String getId()

      The id of this tab.
      Specified by:
        `getId` in interface `Styleable`
      Returns:
        The id of the tab.

    - #### idProperty

          public final StringProperty idProperty()

      The id of this tab.
      Returns:
        the id property of this tab

    - #### setStyle

          public final void setStyle​(String value)

      A string representation of the CSS style associated with this tab. This is analogous to the "style" attribute of an HTML element. Note that, like the HTML style attribute, this variable contains style properties and values and not the selector portion of a style rule.

      Parsing this style might not be supported on some limited platforms. It is recommended to use a standalone CSS file instead.

      Parameters:
        `value` - the style string

    - #### getStyle

          public final String getStyle()

      The CSS style string associated to this tab.
      Specified by:
        `getStyle` in interface `Styleable`
      Returns:
        The CSS style string associated to this tab.

    - #### styleProperty

          public final StringProperty styleProperty()

      The CSS style string associated to this tab.
      See Also:
        `getStyle()`, `setStyle(String)`

    - #### isSelected

          public final boolean isSelected()

      Represents whether this tab is the currently selected tab, To change the selected Tab use `tabPane.getSelectionModel().select()`

      Returns:
        true if selected

    - #### selectedProperty

          public final ReadOnlyBooleanProperty selectedProperty()

      The currently selected tab.
      See Also:
        `isSelected()`

    - #### getTabPane

          public final TabPane getTabPane()

      A reference to the TabPane that contains this tab instance.

      Returns:
        the TabPane

    - #### tabPaneProperty

          public final ReadOnlyObjectProperty<TabPane> tabPaneProperty()

      The TabPane that contains this tab.
      See Also:
        `getTabPane()`

    - #### setText

          public final void setText​(String value)

      Sets the text to show in the tab to allow the user to differentiate between the function of each tab. The text is always visible

      Parameters:
        `value` - the text string

    - #### getText

          public final String getText()

      The text shown in the tab.
      Returns:
        The text shown in the tab.

    - #### textProperty

          public final StringProperty textProperty()

      The text shown in the tab.
      See Also:
        `getText()`, `setText(String)`

    - #### setGraphic

          public final void setGraphic​(Node value)

      Sets the graphic to show in the tab to allow the user to differentiate between the function of each tab. By default the graphic does not rotate based on the TabPane.tabPosition value, but it can be set to rotate by setting TabPane.rotateGraphic to true.

      Parameters:
        `value` - the graphic node

    - #### getGraphic

          public final Node getGraphic()

      The graphic shown in the tab.
      Returns:
        The graphic shown in the tab.

    - #### graphicProperty

          public final ObjectProperty<Node> graphicProperty()

      The graphic in the tab.
      See Also:
        `getGraphic()`, `setGraphic(Node)`

    - #### setContent

          public final void setContent​(Node value)

      The content to show within the main TabPane area. The content can be any Node such as UI controls or groups of nodes added to a layout container.

      Parameters:
        `value` - the content node

    - #### getContent

          public final Node getContent()

      The content associated with the tab.

      Returns:
        The content associated with the tab.

    - #### contentProperty

          public final ObjectProperty<Node> contentProperty()

      The content associated with the tab.

      See Also:
        `getContent()`, `setContent(Node)`

    - #### setContextMenu

          public final void setContextMenu​(ContextMenu value)

      Specifies the context menu to show when the user right-clicks on the tab.

      Parameters:
        `value` - the context menu

    - #### getContextMenu

          public final ContextMenu getContextMenu()

      The context menu associated with the tab.
      Returns:
        The context menu associated with the tab.

    - #### contextMenuProperty

          public final ObjectProperty<ContextMenu> contextMenuProperty()

      The context menu associated with the tab.
      See Also:
        `getContextMenu()`, `setContextMenu(ContextMenu)`

    - #### setClosable

          public final void setClosable​(boolean value)

      Sets `true` if the tab is closable. If this is set to `false`, then regardless of the TabClosingPolicy, it will not be possible for the user to close this tab. Therefore, when this property is `false`, no 'close' button will be shown on the tab. The default is `true`.

      Parameters:
        `value` - the closable value

    - #### isClosable

          public final boolean isClosable()

      Returns `true` if this tab is closable.
      Returns:
        `true` if the tab is closable.

    - #### closableProperty

          public final BooleanProperty closableProperty()

      The closable state for this tab.
      See Also:
        `isClosable()`, `setClosable(boolean)`

    - #### setOnSelectionChanged

          public final void setOnSelectionChanged​(EventHandler<Event> value)

      Defines a function to be called when a selection changed has occurred on the tab.
      Parameters:
        `value` - the on selection changed event handler

    - #### getOnSelectionChanged

          public final EventHandler<Event> getOnSelectionChanged()

      The event handler that is associated with a selection on the tab.
      Returns:
        The event handler that is associated with a tab selection.

    - #### onSelectionChangedProperty

          public final ObjectProperty<EventHandler<Event>> onSelectionChangedProperty()

      The event handler that is associated with a selection on the tab.
      See Also:
        `getOnSelectionChanged()`, `setOnSelectionChanged(EventHandler)`

    - #### setOnClosed

          public final void setOnClosed​(EventHandler<Event> value)

      Defines a function to be called when the tab is closed.
      Parameters:
        `value` - the on closed event handler

    - #### getOnClosed

          public final EventHandler<Event> getOnClosed()

      The event handler that is associated with the tab when the tab is closed.
      Returns:
        The event handler that is associated with the tab when the tab is closed.

    - #### onClosedProperty

          public final ObjectProperty<EventHandler<Event>> onClosedProperty()

      The event handler that is associated with the tab when the tab is closed.
      See Also:
        `getOnClosed()`, `setOnClosed(EventHandler)`

    - #### setTooltip

          public final void setTooltip​(Tooltip value)

      Specifies the tooltip to show when the user hovers over the tab.

      Parameters:
        `value` - the tool tip value

    - #### getTooltip

          public final Tooltip getTooltip()

      The tooltip associated with this tab.
      Returns:
        The tooltip associated with this tab.

    - #### tooltipProperty

          public final ObjectProperty<Tooltip> tooltipProperty()

      The tooltip associated with this tab.
      See Also:
        `getTooltip()`, `setTooltip(Tooltip)`

    - #### setDisable

          public final void setDisable​(boolean value)

      Sets the disabled state of this tab.
      Default value:
        false
      Parameters:
        `value` - the state to set this tab
      Since:
        JavaFX 2.2

    - #### isDisable

          public final boolean isDisable()

      Returns `true` if this tab is disable.
      Returns:
        true if this tab is disable
      Since:
        JavaFX 2.2

    - #### disableProperty

          public final BooleanProperty disableProperty()

      Sets the disabled state of this tab. A disable tab is no longer interactive or traversable, but the contents remain interactive. A disable tab can be selected using `TabPane.getSelectionModel()`.
      Default value:
        false
      Since:
        JavaFX 2.2
      See Also:
        `isDisable()`, `setDisable(boolean)`

    - #### isDisabled

          public final boolean isDisabled()

      Returns true when the `Tab` `disable` is set to `true` or if the `TabPane` is disabled.
      Returns:
        true if the TabPane is disabled
      Since:
        JavaFX 2.2

    - #### disabledProperty

          public final ReadOnlyBooleanProperty disabledProperty()

      Indicates whether or not this `Tab` is disabled. A `Tab` will become disabled if `disable` is set to `true` on either itself or if the `TabPane` is disabled.
      Default value:
        false
      Since:
        JavaFX 2.2
      See Also:
        `isDisabled()`

    - #### onCloseRequestProperty

          public final ObjectProperty<EventHandler<Event>> onCloseRequestProperty()

      Called when there is an external request to close this `Tab`. The installed event handler can prevent tab closing by consuming the received event.
      Since:
        JavaFX 8.0
      See Also:
        `getOnCloseRequest()`, `setOnCloseRequest(EventHandler)`

    - #### getOnCloseRequest

          public EventHandler<Event> getOnCloseRequest()

      Gets the value of the property onCloseRequest.
      Property description:
        Called when there is an external request to close this `Tab`. The installed event handler can prevent tab closing by consuming the received event.
      Since:
        JavaFX 8.0

    - #### setOnCloseRequest

          public void setOnCloseRequest​(EventHandler<Event> value)

      Sets the value of the property onCloseRequest.
      Property description:
        Called when there is an external request to close this `Tab`. The installed event handler can prevent tab closing by consuming the received event.
      Since:
        JavaFX 8.0

    - #### getProperties

          public final ObservableMap<Object,​Object> getProperties()

      Returns an observable map of properties on this Tab for use primarily by application developers.
      Returns:
        an observable map of properties on this Tab for use primarily by application developers
      Since:
        JavaFX 2.2

    - #### hasProperties

          public boolean hasProperties()

      Tests if this Tab has properties.
      Returns:
        true if this tab has properties.
      Since:
        JavaFX 2.2

    - #### setUserData

          public void setUserData​(Object value)

      Convenience method for setting a single Object property that can be retrieved at a later date. This is functionally equivalent to calling the getProperties().put(Object key, Object value) method. This can later be retrieved by calling `getUserData()`.
      Parameters:
        `value` - The value to be stored - this can later be retrieved by calling `getUserData()`.
      Since:
        JavaFX 2.2

    - #### getUserData

          public Object getUserData()

      Returns a previously set Object property, or null if no such property has been set using the `setUserData(java.lang.Object)` method.
      Returns:
        The Object that was previously set, or null if no property has been set or if null was set.
      Since:
        JavaFX 2.2

    - #### getStyleClass

          public ObservableList<String> getStyleClass()

      A list of String identifiers which can be used to logically group Nodes, specifically for an external style engine. This variable is analogous to the "class" attribute on an HTML element and, as such, each element of the list is a style class to which this Node belongs.
      Specified by:
        `getStyleClass` in interface `Styleable`
      Returns:
        a list of String identifiers which can be used to logically group Nodes, specifically for an external style engine
      See Also:
        CSS3 class selectors

    - #### buildEventDispatchChain

          public EventDispatchChain buildEventDispatchChain​(EventDispatchChain tail)

      Construct an event dispatch chain for this target. The event dispatch chain contains event dispatchers which might be interested in processing of events targeted at this `EventTarget`. This event target is not automatically added to the chain, so if it wants to process events, it needs to add an `EventDispatcher` for itself to the chain.

      In the case the event target is part of some hierarchy, the chain for it is usually built from event dispatchers collected from the root of the hierarchy to the event target.

      The event dispatch chain is constructed by modifications to the provided initial event dispatch chain. The returned chain should have the initial chain at its end so the dispatchers should be prepended to the initial chain.

      The caller shouldn't assume that the initial chain remains unchanged nor that the returned value will reference a different chain.

      Specified by:
        `buildEventDispatchChain` in interface `EventTarget`
      Parameters:
        `tail` - the initial chain to build from
      Returns:
        the resulting event dispatch chain for this target

    - #### getTypeSelector

          public String getTypeSelector()

      The type of this `Styleable` that is to be used in selector matching. This is analogous to an "element" in HTML. (CSS Type Selector).
      Specified by:
        `getTypeSelector` in interface `Styleable`
      Returns:
        "Tab"
      Since:
        JavaFX 8.0

    - #### getStyleableParent

          public Styleable getStyleableParent()

      Return the parent of this Styleable, or null if there is no parent.
      Specified by:
        `getStyleableParent` in interface `Styleable`
      Returns:
        `getTabPane()`
      Since:
        JavaFX 8.0

    - #### getPseudoClassStates

          public final ObservableSet<PseudoClass> getPseudoClassStates()

      Return the pseudo-class state of this Styleable. CSS assumes this set is read-only.
      Specified by:
        `getPseudoClassStates` in interface `Styleable`
      Returns:
        the pseudo-class state
      Since:
        JavaFX 8.0

    - #### getCssMetaData

          public List<CssMetaData<? extends Styleable,​?>> getCssMetaData()

      The CssMetaData of this Styleable. This may be returned as an unmodifiable list.
      Specified by:
        `getCssMetaData` in interface `Styleable`
      Returns:
        the CssMetaData
      Since:
        JavaFX 8.0

    - #### getClassCssMetaData

          public static List<CssMetaData<? extends Styleable,​?>> getClassCssMetaData()

      Returns:
        The CssMetaData associated with this class, which may include the CssMetaData of its superclasses.
      Since:
        JavaFX 8.0