Author: Zafir Anjum

The UIManager holds a number of attributes that affects how a JTree is rendered. Changing these
attributes will affect all the JTree components created after this change. You can change the font, text
color and the default icons. To change these attributes you use the function

UIManager.put( keystring, valueobject );

Note that the second argument is an object. If you need to specify an integer then use the Integer class.

The list of attributes you can change are

Tree.font	The font used to display the node that uses the default renderer
Tree.background	The background color of the tree
Tree.foreground	Foreground color - not used by the BasicTreeUI
Tree.hash	The color used to draw the lines connecting the nodes
Tree.textForeground	The text foreground color
Tree.textBackground	The text background color
Tree.selectionForeground	The text color for a selected node
Tree.selectionBackground	The text background for a selected node
Tree.selectionBorderColor	Color of the border for selected nodes
Tree.editorBorder	Border (the Border class) used when editing a node
Tree.leftChildIndent	Distance between left margin and where verical dashes will be drawn
Tree.rightChildIndent	Distance to add to leftChildIndent to determine where cell contents will be drawn.
Tree.rowHeight	Default height of a row
Tree.scrollsOnExpand	Boolean value that determines whether or not when a node is expanded, as many of the descendants are scrolled to be inside the viewport as possible. The default is true.
Tree.openIcon	Icon used for open folders
Tree.closedIcon	Icon used for closed folders
Tree.leafIcon	Icon used for leaf nodes
Tree.expandedIcon	Icon used to denote that the branch is expanded. On MS Windows this is the minus sign
Tree.collapsedIcon	Icon used to denote that the branch is collapsed. On MS Windows this is the plus sign
Tree.changeSelectionWithFocus	Boolean value that determines whether the selection is changed with change in focus
Tree.drawsFocusBorderAroundIcon	Boolean value to indicate whether a border should be drawn around the icons
Tree.iconBackground	Used on Motif
Tree.iconForeground	Used on Motif
Tree.iconHighlight	Used on Motif
Tree.iconShadow	Used on Motif
Tree.line	Linecolor - Used in metal L&F

When you change any of the above attributes, only those components created after the change will use the
new values. All components already created before this change will not be affected. If you want to update
the earlier components as well then you can use the function SwingUtilities.updateComponentTreeUI(). Call
this function for each top level frame or for each JTree that had already been created before you changed
the global attributes.

Posted On: 21-Feb-1999

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