Packages

  • package root
    Definition Classes
    root
  • package scala
    Definition Classes
    root
  • package swing

    Scala-swing is a graphical user interface library that will wrap most of Java Swing for Scala in a straightforward manner.

    Scala-swing is a graphical user interface library that will wrap most of Java Swing for Scala in a straightforward manner.

    Overview

    The widget class hierarchy loosely resembles that of Java Swing. The main differences are:

    • In Java Swing all components are containers per default. This does not make much sense for a number of components, like scala.swing.TextField, scala.swing.CheckBox, scala.swing.RadioButton, and so on. Our guess is that this architecture was chosen because Java lacks multiple inheritance. In scala-swing, components that can have child components extend the scala.swing.Container trait.
    • Layout managers and panels are coupled. There is no way to exchange the layout manager of a panel. As a result, the layout constraints for widgets can be typed. (Note that you gain more type-safety and do not loose much flexibility here. Besides being not a common operation, exchanging the layout manager of a panel in Java Swing almost always leads to exchanging the layout constraints for every of the panel's child component. In the end, it is not more work to move all children to a newly created panel.)
    • Widget hierarchies are built by adding children to their parent container's contents collection. The typical usage style is to create anonymous subclasses of the widgets to customize their properties, and nest children and event reactions.
    • The scala-swing event system follows a different approach than the underlying Java system. Instead of adding event listeners with a particular interface (such as java.awt.ActionListener), a scala.swing.Reactor instance announces the interest in receiving events by calling listenTo for a scala.swing.Publisher. Publishers are also reactors and listen to themselves per default as a convenience. A reactor contains an object reactions which serves as a convenient place to register observers by adding partial functions that pattern match for any event that the observer is interested in. This is shown in the examples section below.
    • For more details see SIP-8.

    Scala-swing comprises two main packages:

    • scala.swing: All widget classes and traits.
    • scala.swing.event: The event hierarchy.

    This package object contains useful type aliases that do not have wrappers.

    Examples

    The following example shows how to plug components and containers together and react to a mouse click on a button:

    import scala.swing._

new Frame {
  title = "Hello world"

  contents = new FlowPanel {
    contents += new Label("Launch rainbows:")
    contents += new Button("Click me") {
      reactions += {
        case event.ButtonClicked(_) =>
          println("All the colours!")
      }
    }
  }

  pack()
  centerOnScreen()
  open()
}
    Definition Classes
    scala
  • object ScrollPane
    Definition Classes
    swing
  • object BarPolicy extends Enumeration
    Definition Classes
    ScrollPane
  • Val
  • Value
  • ValueSet

class Value extends Val

Linear Supertypes
BarPolicy.Val, BarPolicy.Value, Serializable, java.io.Serializable, math.Ordered[BarPolicy.Value], Comparable[BarPolicy.Value], AnyRef, Any
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Inherited
  1. Value
  2. Val
  3. Value
  4. Serializable
  5. Serializable
  6. Ordered
  7. Comparable
  8. AnyRef
  9. Any
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Visibility
  1. Public
  2. All

Instance Constructors

  1. new Value(horizontalPeer: Int, verticalPeer: Int)

Value Members

  1. final def !=(arg0: Any): Boolean
    Definition Classes
    AnyRef → Any
  2. final def ##(): Int
    Definition Classes
    AnyRef → Any
  3. def +(v: BarPolicy.Value): BarPolicy.ValueSet
    Definition Classes
    Value
  4. def <(that: BarPolicy.Value): Boolean
    Definition Classes
    Ordered
  5. def <=(that: BarPolicy.Value): Boolean
    Definition Classes
    Ordered
  6. final def ==(arg0: Any): Boolean
    Definition Classes
    AnyRef → Any
  7. def >(that: BarPolicy.Value): Boolean
    Definition Classes
    Ordered
  8. def >=(that: BarPolicy.Value): Boolean
    Definition Classes
    Ordered
  9. final def asInstanceOf[T0]: T0
    Definition Classes
    Any
  10. def clone(): AnyRef
    Attributes
    protected[java.lang]
    Definition Classes
    AnyRef
    Annotations
    @native() @throws( ... )
  11. def compare(that: BarPolicy.Value): Int
    Definition Classes
    Value → Ordered
  12. def compareTo(that: BarPolicy.Value): Int
    Definition Classes
    Ordered → Comparable
  13. final def eq(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  14. def equals(other: Any): Boolean
    Definition Classes
    Value → AnyRef → Any
  15. def finalize(): Unit
    Attributes
    protected[java.lang]
    Definition Classes
    AnyRef
    Annotations
    @throws( classOf[java.lang.Throwable] )
  16. final def getClass(): Class[_]
    Definition Classes
    AnyRef → Any
    Annotations
    @native()
  17. def hashCode(): Int
    Definition Classes
    Value → AnyRef → Any
  18. val horizontalPeer: Int
  19. def id: Int
    Definition Classes
    Value → Val → Value
  20. final def isInstanceOf[T0]: Boolean
    Definition Classes
    Any
  21. final def ne(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  22. final def notify(): Unit
    Definition Classes
    AnyRef
    Annotations
    @native()
  23. final def notifyAll(): Unit
    Definition Classes
    AnyRef
    Annotations
    @native()
  24. def readResolve(): AnyRef
    Attributes
    protected
    Definition Classes
    Val
  25. final def synchronized[T0](arg0: ⇒ T0): T0
    Definition Classes
    AnyRef
  26. def toString(): String
    Definition Classes
    Val → AnyRef → Any
  27. val verticalPeer: Int
  28. final def wait(): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws( ... )
  29. final def wait(arg0: Long, arg1: Int): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws( ... )
  30. final def wait(arg0: Long): Unit
    Definition Classes
    AnyRef
    Annotations
    @native() @throws( ... )

Inherited from BarPolicy.Val

Inherited from BarPolicy.Value

Inherited from Serializable

Inherited from java.io.Serializable

Inherited from math.Ordered[BarPolicy.Value]

Inherited from Comparable[BarPolicy.Value]

Inherited from AnyRef

Inherited from Any

Ungrouped