Class ColorDialog

  • All Implemented Interfaces:
    Adaptable

    public class ColorDialog
    extends Dialog
    Instances of this class allow the user to select a color from a predefined set of available colors.
    Styles:
    (none)
    Events:
    (none)

    IMPORTANT: This class is intended to be subclassed only within the SWT implementation.

    Since:
    1.2
    • Constructor Detail

      • ColorDialog

        public ColorDialog​(Shell parent)
        Constructs a new instance of this class given only its parent.
        Parameters:
        parent - a composite control which will be the parent of the new instance
        Throws:
        java.lang.IllegalArgumentException -
        • ERROR_NULL_ARGUMENT - if the parent is null
        SWTException -
        • ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the parent
        • ERROR_INVALID_SUBCLASS - if this class is not an allowed subclass
        See Also:
        SWT, Widget.checkSubclass(), Widget.getStyle()
      • ColorDialog

        public ColorDialog​(Shell parent,
                           int style)
        Constructs a new instance of this class given its parent and a style value describing its behavior and appearance.

        The style value is either one of the style constants defined in class SWT which is applicable to instances of this class, or must be built by bitwise OR'ing together (that is, using the int "|" operator) two or more of those SWT style constants. The class description lists the style constants that are applicable to the class. Style bits are also inherited from superclasses.

        Parameters:
        parent - a composite control which will be the parent of the new instance (cannot be null)
        style - the style of control to construct
        Throws:
        java.lang.IllegalArgumentException -
        • ERROR_NULL_ARGUMENT - if the parent is null
        SWTException -
        • ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the parent
        • ERROR_INVALID_SUBCLASS - if this class is not an allowed subclass
        See Also:
        SWT, Widget.checkSubclass(), Widget.getStyle()
    • Method Detail

      • open

        public RGB open()
        Makes the receiver visible and brings it to the front of the display.

        RAP Note: This method is not supported when running the application in JEE_COMPATIBILITY mode. Use Dialog#open(DialogCallback) instead.

        Returns:
        the selected color, or null if the dialog was cancelled, no color was selected, or an error occurred
        Throws:
        SWTException -
        • ERROR_WIDGET_DISPOSED - if the receiver has been disposed
        • ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
        java.lang.UnsupportedOperationException - when running the application in JEE_COMPATIBILITY mode
        See Also:
        Application.OperationMode, Dialog.open(DialogCallback)
      • getRGB

        public RGB getRGB()
        Returns the currently selected color in the receiver.
        Returns:
        the RGB value for the selected color, may be null
        See Also:
        PaletteData.getRGBs()
      • setRGB

        public void setRGB​(RGB rgb)
        Sets the receiver's selected color to be the argument.
        Parameters:
        rgb - the new RGB value for the selected color, may be null to let the platform select a default when open() is called
        See Also:
        PaletteData.getRGBs()
      • prepareOpen

        protected void prepareOpen()
        Overrides:
        prepareOpen in class Dialog