javax.swing.plaf.basic
Class BasicTreeUI

java.lang.Object
  javax.swing.plaf.ComponentUI
      javax.swing.plaf.TreeUI
          javax.swing.plaf.basic.BasicTreeUI

Direct Known Subclasses:

MetalTreeUI

public class BasicTreeUI
extends TreeUI

The basic L&F for a hierarchical data structure.

Nested Class Summary

class	BasicTreeUI.CellEditorHandler Listener responsible for getting cell editing events and updating the tree accordingly.
class	BasicTreeUI.ComponentHandler Updates the preferred size when scrolling (if necessary).
class	BasicTreeUI.FocusHandler Repaints the lead selection row when focus is lost/gained.
class	BasicTreeUI.KeyHandler This is used to get mutliple key down events to appropriately generate events.
class	BasicTreeUI.MouseHandler TreeMouseListener is responsible for updating the selection based on mouse events.
class	BasicTreeUI.MouseInputHandler MouseInputHandler handles passing all mouse events, including mouse motion events, until the mouse is released to the destination it is constructed with.
class	BasicTreeUI.NodeDimensionsHandler Class responsible for getting size of node, method is forwarded to BasicTreeUI method.
class	BasicTreeUI.PropertyChangeHandler PropertyChangeListener for the tree.
class	BasicTreeUI.SelectionModelPropertyChangeHandler Listener on the TreeSelectionModel, resets the row selection if any of the properties of the model change.
class	BasicTreeUI.TreeCancelEditingAction ActionListener that invokes cancelEditing when action performed.
class	BasicTreeUI.TreeExpansionHandler Updates the TreeState in response to nodes expanding/collapsing.
class	BasicTreeUI.TreeHomeAction TreeHomeAction is used to handle end/home actions.
class	BasicTreeUI.TreeIncrementAction TreeIncrementAction is used to handle up/down actions.
class	BasicTreeUI.TreeModelHandler Forwards all TreeModel events to the TreeState.
class	BasicTreeUI.TreePageAction TreePageAction handles page up and page down events.
class	BasicTreeUI.TreeSelectionHandler Listens for changes in the selection model and updates the display accordingly.
class	BasicTreeUI.TreeToggleAction For the first selected row expandedness will be toggled.
class	BasicTreeUI.TreeTraverseAction TreeTraverseAction is the action used for left/right keys.

Field Summary

protected TreeCellEditor	cellEditor Editor for the tree.
protected Icon	collapsedIcon
protected boolean	createdCellEditor Set to true if editor that is currently in the tree was created by this instance.
protected boolean	createdRenderer Set to true if the renderer that is currently in the tree was created by this instance.
protected TreeCellRenderer	currentCellRenderer Renderer that is being used to do the actual cell drawing.
protected int	depthOffset How much the depth should be offset to properly calculate x locations.
protected Hashtable<TreePath,Boolean>	drawingCache Used for minimizing the drawing of vertical lines.
protected Component	editingComponent When editing, this will be the Component that is doing the actual editing.
protected TreePath	editingPath Path that is being edited.
protected int	editingRow Row that is being edited.
protected boolean	editorHasDifferentSize Set to true if the editor has a different size than the renderer.
protected Icon	expandedIcon
protected boolean	largeModel True if doing optimizations for a largeModel.
protected int	lastSelectedRow Index of the row that was last selected.
protected int	leftChildIndent Distance between left margin and where vertical dashes will be drawn.
protected AbstractLayoutCache.NodeDimensions	nodeDimensions Reponsible for telling the TreeState the size needed for a node.
protected Dimension	preferredMinSize Minimum preferred size.
protected Dimension	preferredSize Size needed to completely display all the nodes.
protected CellRendererPane	rendererPane Used to paint the TreeCellRenderer.
protected int	rightChildIndent Distance to add to leftChildIndent to determine where cell contents will be drawn.
protected boolean	stopEditingInCompleteEditing Set to false when editing and shouldSelectCell() returns true meaning the node should be selected before editing, used in completeEditing.
protected int	totalChildIndent Total distance that will be indented.
protected JTree	tree Component that we're going to be drawing into.
protected TreeModel	treeModel Used to determine what to display.
protected TreeSelectionModel	treeSelectionModel Model maintaing the selection.
protected AbstractLayoutCache	treeState Object responsible for handling sizing and expanded issues.
protected boolean	validCachedPreferredSize Is the preferredSize valid?

Constructor Summary

BasicTreeUI()

Method Summary

void	cancelEditing(JTree tree) Cancels the current editing session.
protected void	checkForClickInExpandControl(TreePath path, int mouseX, int mouseY) If the mouseX and mouseY are in the expand/collapse region of the row, this will toggle the row.
protected void	completeEditing() Messages to stop the editing session.
protected void	completeEditing(boolean messageStop, boolean messageCancel, boolean messageTree) Stops the editing session.
protected void	completeUIInstall() Invoked from installUI after all the defaults/listeners have been installed.
protected void	completeUIUninstall()
protected void	configureLayoutCache() Resets the TreeState instance based on the tree we're providing the look and feel for.
protected CellEditorListener	createCellEditorListener() Creates a listener to handle events from the current editor.
protected CellRendererPane	createCellRendererPane() Returns the renderer pane that renderer components are placed in.
protected