Class JXTree.DelegatingRenderer

java.lang.Object
org.jdesktop.swingx.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 cinvalid input: '&p' from JXList ;-) PENDING JW: missing override of updateUI in xtree ...

  • Field Details

    • closedIcon

      private Icon closedIcon
    • openIcon

      private Icon openIcon
    • leafIcon

      private Icon leafIcon
    • delegate

      private TreeCellRenderer delegate
  • Constructor Details

    • 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 Details

    • initIcons

      private void initIcons(DefaultTreeCellRenderer renderer)
      initially sets the icons to the defaults as given by a DefaultTreeCellRenderer.
      Parameters:
      renderer -
    • 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.
    • updateIcons

      private void updateIcons()
      tries to set the renderers icons. Can succeed only if the delegate is a DefaultTreeCellRenderer. 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.... ??
    • 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