Class LayoutCallback

java.lang.Object
com.codename1.ui.layouts.mig.LayoutCallback
public abstract class LayoutCallback extends Object

A class to extend if you want to provide more control over where a component is placed or the size of it.

Note! Returned arrays from this class will never be altered. This means that caching of arrays in these methods is OK.

  • Constructor Summary

    Constructors
    Constructor
    Description
    LayoutCallback()
     

  • Method Summary

    Modifier and Type
    Method
    Description
    void
    correctBounds(ComponentWrapper comp)
    A last minute change of the bounds.
    UnitValue[]
    getPosition(ComponentWrapper comp)
    Returns a position similar to the "pos" the component constraint.
    BoundSize[]
    getSize(ComponentWrapper comp)
    Returns a size similar to the "width" and "height" in the component constraint.

    Methods inherited from class Object

    clone, equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
    Modifier and Type
    Method
    Description
    protected Object
    clone()
     
    boolean
    equals(Object obj)
    Indicates whether some other object is "equal to" this one.
    final Class
    getClass()
    Returns the runtime class of an object.
    int
    hashCode()
    Returns a hash code value for the object.
    final void
    notify()
    Wakes up a single thread that is waiting on this object's monitor.
    final void
    notifyAll()
    Wakes up all threads that are waiting on this object's monitor.
    String
    toString()
    Returns a string representation of the object.
    final void
    wait()
    Causes current thread to wait until another thread invokes the method or the method for this object.
    final void
    wait(long timeout)
    Causes current thread to wait until either another thread invokes the method or the method for this object, or a specified amount of time has elapsed.
    final void
    wait(long timeout, int nanos)
    Causes current thread to wait until another thread invokes the method or the method for this object, or some other thread interrupts the current thread, or a certain amount of real time has elapsed.

  • Constructor Details

    • LayoutCallback

      public LayoutCallback()

  • Method Details

    • getPosition

      public UnitValue[] getPosition(ComponentWrapper comp)

      Returns a position similar to the "pos" the component constraint.

      Parameters
      • comp: @param comp The component wrapper that holds the actual component (JComponent is Swing and Control in SWT). Should not be altered.
      Returns
      Returns:

      The [x, y, x2, y2] as explained in the documentation for "pos". If null is returned nothing is done and this is the default.

      See also

      • UnitValue

      • net.miginfocom.layout.ConstraintParser#parseUnitValue(String, boolean)

    • getSize

      public BoundSize[] getSize(ComponentWrapper comp)

      Returns a size similar to the "width" and "height" in the component constraint.

      Parameters
      • comp: @param comp The component wrapper that holds the actual component (JComponent is Swing and Control in SWT). Should not be altered.
      Returns
      Returns:

      The [width, height] as explained in the documentation for "width" and "height". If null is returned nothing is done and this is the default.

      See also

      • net.miginfocom.layout.BoundSize

      • net.miginfocom.layout.ConstraintParser#parseBoundSize(String, boolean, boolean)

    • correctBounds

      public void correctBounds(ComponentWrapper comp)

      A last minute change of the bounds. The bound for the layout cycle has been set and you can correct there after any set of rules you like.

      Parameters
      • comp: The component wrapper that holds the actual component (JComponent is Swing and Control in SWT).