Class JXTree.DelegatingRenderer

  • All Implemented Interfaces:
    TreeCellRenderer, RolloverRenderer
    Enclosing class:
    JXTree

    public class JXTree.DelegatingRenderer
    extends Object
    implements TreeCellRenderer, RolloverRenderer
    A decorator for the original TreeCellRenderer. Needed to hook highlighters after messaging the delegate.

    PENDING JW: formally implement UIDependent? PENDING JW: missing updateUI anyway (got lost when c&p from JXList ;-) PENDING JW: missing override of updateUI in xtree ...

    • Constructor Detail

      • DelegatingRenderer

        public DelegatingRenderer()
        Instantiates a DelegatingRenderer with tree's default renderer as delegate.
      • DelegatingRenderer

        public DelegatingRenderer​(TreeCellRenderer delegate)
        Instantiates a DelegatingRenderer with the given delegate. If the delegate is null, the default is created via the list's factory method.
        Parameters:
        delegate - the delegate to use, if null the tree's default is created and used.
    • Method Detail

      • setDelegateRenderer

        public void setDelegateRenderer​(TreeCellRenderer delegate)
        Sets the delegate. If the delegate is null, the default is created via the list's factory method. Updates the folder/leaf icons. THINK: how to update? always override with this.icons, only if renderer's icons are null, update this icons if they are not, update all if only one is != null.... ??
        Parameters:
        delegate - the delegate to use, if null the list's default is created and used.
      • setClosedIcon

        public void setClosedIcon​(Icon closedIcon)
      • setOpenIcon

        public void setOpenIcon​(Icon openIcon)
      • setLeafIcon

        public void setLeafIcon​(Icon leafIcon)
      • getDelegateRenderer

        public TreeCellRenderer getDelegateRenderer()
        Returns the delegate.
        Returns:
        the delegate renderer used by this renderer, guaranteed to not-null.
      • getTreeCellRendererComponent

        public Component getTreeCellRendererComponent​(JTree tree,
                                                      Object value,
                                                      boolean selected,
                                                      boolean expanded,
                                                      boolean leaf,
                                                      int row,
                                                      boolean hasFocus)

        Overridden to apply the highlighters, if any, after calling the delegate. The decorators are not applied if the row is invalid.

        Specified by:
        getTreeCellRendererComponent in interface TreeCellRenderer
      • isEnabled

        public boolean isEnabled()
        Specified by:
        isEnabled in interface RolloverRenderer
        Returns:
        true if rollover effects are on and clickable.
      • doClick

        public void doClick()
        Description copied from interface: RolloverRenderer
        Same as AbstractButton.doClick(). It's up to client code to prepare the renderer's component before calling this method.
        Specified by:
        doClick in interface RolloverRenderer