public interface TreeCellRenderer
Defines the requirements for an object that displays a tree node. See How to Use Trees in The Java Tutorial for an example of implementing a tree cell renderer that displays custom icons.
Method Summary | |
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Component |
getTreeCellRendererComponent
(
JTree
tree,
Object
value, boolean selected, boolean expanded, boolean leaf, int row, boolean hasFocus) Sets the value of the current tree cell to value. |
Method Detail |
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Component getTreeCellRendererComponent(JTree tree, Object value, boolean selected, boolean expanded, boolean leaf, int row, boolean hasFocus)
The TreeCellRenderer is also responsible for rendering the the cell representing the tree's current DnD drop location if it has one. If this renderer cares about rendering the DnD drop location, it should query the tree directly to see if the given row represents the drop location:
JTree.DropLocation dropLocation = tree.getDropLocation(); if (dropLocation != null && dropLocation.getChildIndex() == -1 && tree.getRowForPath(dropLocation.getPath()) == row) { // this row represents the current drop location // so render it specially, perhaps with a different color }