class Component extends UIElement

Base class for all UI elements that can be displayed in a window. Components are publishers that fire the following event classes: ComponentEvent, FocusEvent, FontChanged, ForegroundChanged, BackgroundChanged.

attributes: abstract
known subclasses: AbstractButton, Scrollable, Wrapper, Table, ListView, TextComponent, Label, TabbedPane, SplitPane, Slider, Separator, ScrollPane, ScrollBar, MenuBar, ProgressBar, Panel, ComboBox


  1. UIElement
  2. LazyPublisher
  3. Publisher
  4. Reactor
  5. Proxy
  6. AnyRef
  7. Any

Value Members

  1. var Mouse: mouse

  2. def background: Color

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

  4. def border: Border

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

  6. def bounds: Rectangle

  7. def cursor: Cursor

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

  9. 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
  10. def displayable: Boolean

  11. def enabled: Boolean

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

  13. def equals(that: Any): Boolean

    This method is used to compare the receiver object (this) with the argument object (arg0) for equivalence

    This method is used to compare the receiver object (this) with the argument object (arg0) for equivalence.

    The default implementations of this method is an equivalence relation:

    • It is reflexive: for any instance x of type Any, x.equals(x) should return true.
    • It is symmetric: for any instances x and y of type Any, x.equals(y) should return true if and only if y.equals(x) returns true.
    • It is transitive: for any instances x, y, and z of type AnyRef if x.equals(y) returns true and y.equals(z) returns true, then x.equals(z) should return true.

    If you override this method, you should verify that your implementation remains an equivalence relation. Additionally, when overriding this method it is often necessary to override hashCode to ensure that objects that are "equal" (o1.equals(o2) returns true) hash to the same Int (o1.hashCode.equals(o2.hashCode)).

    definition classes: Proxy ⇐ AnyRef ⇐ Any
  14. def focusable: Boolean

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

  16. def font: Font

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

  18. def foreground: Color

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

  20. def hasFocus: Boolean

  21. def hashCode(): Int

    Returns a hash code value for the object

    Returns a hash code value for the object.

    The default hashing algorithm is platform dependent.

    Note that it is allowed for two objects to have identical hash codes (o1.hashCode.equals(o2.hashCode)) yet not be equal (o1.equals(o2) returns false). A degenerate implementation could always return 0. However, it is required that if two objects are equal (o1.equals(o2) returns true) that they have identical hash codes (o1.hashCode.equals(o2.hashCode)). Therefore, when overriding this method, be sure to verify that the behavior is consistent with the equals method.

    definition classes: Proxy ⇐ AnyRef ⇐ Any
  22. def ignoreRepaint: Boolean

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

  24. var initP: JComponent

  25. def inputVerifier: (Component.this.type) ⇒ Boolean

  26. def inputVerifier_=(v: (Component.this.type) ⇒ Boolean): Unit

  27. object keys extends Publisher

  28. 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
  29. def locale: Locale

  30. def location: Point

  31. def locationOnScreen: Point

  32. def maximumSize: Dimension

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

  34. def minimumSize: Dimension

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

  36. object mouse extends AnyRef

    Contains publishers for various mouse events

  37. def onFirstSubscribe(): Unit

  38. def onLastUnsubscribe(): Unit

  39. def opaque: Boolean

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

  41. def paint(g: Graphics2D): Unit

  42. var peer: JComponent

    The underlying Swing peer

    The underlying Swing peer.

  43. def preferredSize: Dimension

  44. def preferredSize_=(xy: (Int, Int)): Unit

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

  46. def publish(e: Event): Unit

    Notify all registered reactions

    Notify all registered reactions.

    definition classes: Publisher
  47. val reactions: Reactions

    All reactions of this reactor

    All reactions of this reactor.

    definition classes: Reactor
  48. def repaint(rect: Rectangle): Unit

  49. def repaint(): Unit

  50. def requestFocus(): Unit

  51. def requestFocusInWindow(): Boolean

  52. def revalidate(): Unit

  53. def self: Component

  54. def showing: Boolean

  55. def size: Dimension

  56. def size_=(xy: (Int, Int)): Unit

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

  58. def subscribe(listener: PartialFunction[Event, Unit]): Unit

  59. def toString(): String

    Returns a string representation of the object

    Returns a string representation of the object.

    The default representation is platform dependent.

  60. def toolkit: Toolkit

  61. def tooltip: String

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

  63. def unsubscribe(listener: PartialFunction[Event, Unit]): Unit

  64. def visible: Boolean

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

  66. 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.

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

  68. def yLayoutAlignment: Double

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

Instance constructors

  1. new Component()