scala.swing

ComboBox

class ComboBox[A] extends Component with Publisher

Let's the user make a selection from a list of predefined items. Visually, this is implemented as a button-like component with a pull-down menu.

Source
ComboBox.scala
See also

javax.swing.JComboBox

Linear Supertypes
Component, UIElement, LazyPublisher, Publisher, Reactor, Proxy, AnyRef, Any
Ordering
  1. Alphabetic
  2. By inheritance
Inherited
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  1. ComboBox
  2. Component
  3. UIElement
  4. LazyPublisher
  5. Publisher
  6. Reactor
  7. Proxy
  8. AnyRef
  9. Any
Visibility
  1. Public
  2. All

Instance Constructors

  1. new ComboBox(items: Seq[A])

Value Members

  1. final def !=(arg0: AnyRef): Boolean

    Definition Classes
    AnyRef

  2. final def !=(arg0: Any): Boolean

    Test two objects for inequality.

    Test two objects for inequality.

    returns

    true if !(this == that), false otherwise.

    Definition Classes
    Any

  3. final def ##(): Int

    Equivalent to x.hashCode except for boxed numeric types.

    Equivalent to x.hashCode except for boxed numeric types. For numerics, it returns a hash value which is consistent with value equality: if two value type instances compare as true, then ## will produce the same hash value for each of them.

    returns

    a hash value consistent with ==

    Definition Classes
    AnyRef → Any

  4. final def ==(arg0: AnyRef): Boolean

    Definition Classes
    AnyRef

  5. final def ==(arg0: Any): Boolean

    Test two objects for equality.

    Test two objects for equality.

    returns

    true if the receiver object is equivalent to the argument; false otherwise.

    Definition Classes
    Any

  6. final def asInstanceOf[T0]: T0

    Cast the receiver object to be of type T0.

    Cast the receiver object to be of type T0.

    Note that the success of a cast at runtime is modulo Scala's erasure semantics. Therefore the expression 1.asInstanceOf[String] will throw a ClassCastException at runtime, while the expression List(1).asInstanceOf[List[String]] will not. In the latter example, because the type argument is erased as part of compilation it is not possible to check whether the contents of the list are of the requested type.

    returns

    the receiver object.

    Definition Classes
    Any
    Exceptions thrown
    ClassCastException

    if the receiver object is not an instance of the erasure of type T0.

  7. def background: Color

    Definition Classes
    UIElement

  8. def background_=(c: Color): Unit

    Definition Classes
    UIElement

  9. def border: Border

    Definition Classes
    Component

  10. def border_=(b: Border): Unit

    Definition Classes
    Component

  11. def bounds: Rectangle

    Definition Classes
    UIElement

  12. def clone(): AnyRef

    Create a copy of the receiver object.

    Create a copy of the receiver object.

    The default implementation of the clone method is platform dependent.

    returns

    a copy of the receiver object.

    Attributes
    protected[lang]
    Definition Classes
    AnyRef
    Annotations
    @throws()
    Note

    not specified by SLS as a member of AnyRef

  13. def cursor: Cursor

    Definition Classes
    UIElement

  14. def cursor_=(c: Cursor): Unit

    Definition Classes
    UIElement

  15. def deafTo(ps: Publisher*): Unit

    Installed reaction won't receive events from the given publisher anylonger.

    Installed reaction won't receive events from the given publisher anylonger.

    Definition Classes
    Reactor

  16. def displayable: Boolean

    Definition Classes
    UIElement

  17. def editable: Boolean

  18. def enabled: Boolean

    Definition Classes
    Component

  19. def enabled_=(b: Boolean): Unit

    Definition Classes
    Component

  20. final def eq(arg0: AnyRef): Boolean

    Tests whether the argument (arg0) is a reference to the receiver object (this).

    Tests whether the argument (arg0) is a reference to the receiver object (this).

    The eq method implements an equivalence relation on non-null instances of AnyRef, and has three additional properties:

    • It is consistent: for any non-null instances x and y of type AnyRef, multiple invocations of x.eq(y) consistently returns true or consistently returns false.
    • For any non-null instance x of type AnyRef, x.eq(null) and null.eq(x) returns false.
    • null.eq(null) returns true.

    When overriding the equals or hashCode methods, it is important to ensure that their behavior is consistent with reference equality. Therefore, if two objects are references to each other (o1 eq o2), they should be equal to each other (o1 == o2) and they should hash to the same value (o1.hashCode == o2.hashCode).

    returns

    true if the argument is a reference to the receiver object; false otherwise.

    Definition Classes
    AnyRef

  21. def equals(that: Any): Boolean

    The equality method for reference types.

    The equality method for reference types. See equals in Any.

    that

    the object to compare against this object for equality.

    returns

    true if the receiver object is equivalent to the argument; false otherwise.

    Definition Classes
    Proxy → AnyRef → Any

  22. def finalize(): Unit

    Called by the garbage collector on the receiver object when there are no more references to the object.

    Called by the garbage collector on the receiver object when there are no more references to the object.

    The details of when and if the finalize method is invoked, as well as the interaction between finalize and non-local returns and exceptions, are all platform dependent.

    Attributes
    protected[lang]
    Definition Classes
    AnyRef
    Annotations
    @throws()
    Note

    not specified by SLS as a member of AnyRef

  23. def focusable: Boolean

    Definition Classes
    Component

  24. def focusable_=(b: Boolean): Unit

    Definition Classes
    Component

  25. def font: Font

    Definition Classes
    UIElement

  26. def font_=(f: Font): Unit

    Definition Classes
    UIElement

  27. def foreground: Color

    Definition Classes
    UIElement

  28. def foreground_=(c: Color): Unit

    Definition Classes
    UIElement

  29. final def getClass(): java.lang.Class[_]

    A representation that corresponds to the dynamic class of the receiver object.

    A representation that corresponds to the dynamic class of the receiver object.

    The nature of the representation is platform dependent.

    returns

    a representation that corresponds to the dynamic class of the receiver object.

    Definition Classes
    AnyRef → Any
    Note

    not specified by SLS as a member of AnyRef

  30. def hasFocus: Boolean

    Definition Classes
    Component

  31. def hashCode(): Int

    The hashCode method for reference types.

    The hashCode method for reference types. See hashCode in Any.

    returns

    the hash code value for this object.

    Definition Classes
    Proxy → AnyRef → Any

  32. def ignoreRepaint: Boolean

    Definition Classes
    UIElement

  33. def ignoreRepaint_=(b: Boolean): Unit

    Definition Classes
    UIElement

  34. var initP: JComponent

    Definition Classes
    Component

  35. def inputVerifier: (Component) ⇒ Boolean

    Definition Classes
    Component

  36. def inputVerifier_=(v: (Component) ⇒ Boolean): Unit

    Definition Classes
    Component

  37. final def isInstanceOf[T0]: Boolean

    Test whether the dynamic type of the receiver object is T0.

    Test whether the dynamic type of the receiver object is T0.

    Note that the result of the test is modulo Scala's erasure semantics. Therefore the expression 1.isInstanceOf[String] will return false, while the expression List(1).isInstanceOf[List[String]] will return true. In the latter example, because the type argument is erased as part of compilation it is not possible to check whether the contents of the list are of the specified type.

    returns

    true if the receiver object is an instance of erasure of type T0; false otherwise.

    Definition Classes
    Any

  38. object keys extends Publisher

  39. def listenTo(ps: Publisher*): Unit

    Listen to the given publisher as long as deafTo isn't called for them.

    Listen to the given publisher as long as deafTo isn't called for them.

    Definition Classes
    Reactor

  40. val listeners: RefSet[Reaction] { val underlying: scala.collection.mutable.HashSet[scala.ref.Reference[scala.swing.Reactions.Reaction]] }

    Attributes
    protected
    Definition Classes
    Publisher

  41. def locale: Locale

    Definition Classes
    UIElement

  42. def location: Point

    Definition Classes
    UIElement

  43. def locationOnScreen: Point

    Definition Classes
    UIElement

  44. def makeEditable()(implicit editor: (ComboBox[A]) ⇒ Editor[A]): Unit

    Makes this combo box editable.

    Makes this combo box editable. In order to do so, this combo needs an editor which is supplied by the implicit argument. For default editors, see ComboBox companion object.

  45. def maximumSize: Dimension

    Definition Classes
    UIElement

  46. def maximumSize_=(x: Dimension): Unit

    Definition Classes
    UIElement

  47. def minimumSize: Dimension

    Definition Classes
    UIElement

  48. def minimumSize_=(x: Dimension): Unit

    Definition Classes
    UIElement

  49. object mouse extends AnyRef

    Contains publishers for various mouse events.

  50. def name: String

    Definition Classes
    Component

  51. def name_=(s: String): Unit

    Definition Classes
    Component

  52. final def ne(arg0: AnyRef): Boolean

    Equivalent to !(this eq that).

    Equivalent to !(this eq that).

    returns

    true if the argument is not a reference to the receiver object; false otherwise.

    Definition Classes
    AnyRef

  53. final def notify(): Unit

    Wakes up a single thread that is waiting on the receiver object's monitor.

    Wakes up a single thread that is waiting on the receiver object's monitor.

    Definition Classes
    AnyRef
    Note

    not specified by SLS as a member of AnyRef

  54. final def notifyAll(): Unit

    Wakes up all threads that are waiting on the receiver object's monitor.

    Wakes up all threads that are waiting on the receiver object's monitor.

    Definition Classes
    AnyRef
    Note

    not specified by SLS as a member of AnyRef

  55. def onFirstSubscribe(): Unit

    Attributes
    protected
    Definition Classes
    Component → UIElement → LazyPublisher

  56. def onLastUnsubscribe(): Unit

    Attributes
    protected
    Definition Classes
    UIElement → LazyPublisher

  57. def opaque: Boolean

    Definition Classes
    Component

  58. def opaque_=(b: Boolean): Unit

    Definition Classes
    Component

  59. def paint(g: Graphics2D): Unit

    Definition Classes
    Component

  60. def paintBorder(g: Graphics2D): Unit

    Attributes
    protected
    Definition Classes
    Component

  61. def paintChildren(g: Graphics2D): Unit

    Attributes
    protected
    Definition Classes
    Component

  62. def paintComponent(g: Graphics2D): Unit

    For custom painting, users should usually override this method.

    For custom painting, users should usually override this method.

    Attributes
    protected
    Definition Classes
    Component

  63. lazy val peer: JComboBox

    Definition Classes
    ComboBox → Component → UIElement

  64. def preferredSize: Dimension

    Definition Classes
    UIElement

  65. def preferredSize_=(x: Dimension): Unit

    Definition Classes
    UIElement

  66. def prototypeDisplayValue: Option[A]

  67. def prototypeDisplayValue_=(v: Option[A]): Unit

  68. def publish(e: Event): Unit

    Notify all registered reactions.

    Notify all registered reactions.

    Definition Classes
    Publisher

  69. val reactions: Reactions

    All reactions of this reactor.

    All reactions of this reactor.

    Definition Classes
    Reactor

  70. def renderer: Renderer[A]

    Sets the renderer for this combo box's items.

    Sets the renderer for this combo box's items. Index -1 is passed to the renderer for the selected item (not in the pull-down menu).

    The underlying combo box renders all items in a ListView (both, in the pull-down menu as well as in the box itself), hence the ListView.Renderer.

    Note that the UI peer of a combo box usually changes the colors of the component to its own defaults _after_ the renderer has been configured. That's Swing's principle of most suprise.

  71. def renderer_=(r: Renderer[A]): Unit

  72. def repaint(rect: Rectangle): Unit

    Definition Classes
    UIElement

  73. def repaint(): Unit

    Definition Classes
    UIElement

  74. def requestFocus(): Unit

    Definition Classes
    Component

  75. def requestFocusInWindow(): Boolean

    Definition Classes
    Component

  76. def revalidate(): Unit

    Definition Classes
    Component

  77. object selection extends Publisher

  78. def self: Component

    Definition Classes
    UIElement → Proxy

  79. def showing: Boolean

    Definition Classes
    UIElement

  80. def size: Dimension

    Definition Classes
    UIElement

  81. def subscribe(listener: Reaction): Unit

    Definition Classes
    LazyPublisher → Publisher

  82. final def synchronized[T0](arg0: ⇒ T0): T0

    Definition Classes
    AnyRef

  83. def toString(): String

    Creates a String representation of this object.

    Creates a String representation of this object. The default representation is platform dependent. On the java platform it is the concatenation of the class name, "@", and the object's hashcode in hexadecimal.

    returns

    a String representation of the object.

    Definition Classes
    Component → Proxy → AnyRef → Any

  84. def toolkit: Toolkit

    Definition Classes
    UIElement

  85. def tooltip: String

    Definition Classes
    Component

  86. def tooltip_=(t: String): Unit

    Definition Classes
    Component

  87. def unsubscribe(listener: Reaction): Unit

    Definition Classes
    LazyPublisher → Publisher

  88. def visible: Boolean

    Definition Classes
    UIElement

  89. def visible_=(b: Boolean): Unit

    Definition Classes
    UIElement

  90. final def wait(): Unit

    Definition Classes
    AnyRef
    Annotations
    @throws()

  91. final def wait(arg0: Long, arg1: Int): Unit

    Definition Classes
    AnyRef
    Annotations
    @throws()

  92. final def wait(arg0: Long): Unit

    Definition Classes
    AnyRef
    Annotations
    @throws()

  93. def xLayoutAlignment: Double

    Used by certain layout managers, e.

    Used by certain layout managers, e.g., BoxLayout or OverlayLayout to align components relative to each other.

    Definition Classes
    Component

  94. def xLayoutAlignment_=(x: Double): Unit

    Definition Classes
    Component

  95. def yLayoutAlignment: Double

    Definition Classes
    Component

  96. def yLayoutAlignment_=(y: Double): Unit

    Definition Classes
    Component

Deprecated Value Members

  1. lazy val Mouse: ComboBox.this.mouse.type

    Definition Classes
    Component
    Annotations
    @deprecated
    Deprecated

    (Since version 2.8.0) Use mouse instead

  2. def size_=(dim: Dimension): Unit

    Definition Classes
    UIElement
    Annotations
    @deprecated
    Deprecated

    (Since version 2.8.0) "Explicit size assignment for UIElements is not supported anymore. ".+("Use a layout manager or subclass Window.")