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## weka.gui.treevisualizer
Class TreeVisualizer

    java.lang.Object
      java.awt.Component
          java.awt.Container
              javax.swing.JComponent
                  javax.swing.JPanel
                      weka.gui.visualize.PrintablePanel
                          weka.gui.treevisualizer.TreeVisualizer

All Implemented Interfaces:
  java.awt.event.ActionListener, java.awt.event.ItemListener, java.awt.event.MouseListener, java.awt.event.MouseMotionListener, java.awt.image.ImageObserver, java.awt.MenuContainer, java.io.Serializable, java.util.EventListener, javax.accessibility.Accessible, PrintableHandler

    public class TreeVisualizer

extends PrintablePanel
implements java.awt.event.MouseMotionListener, java.awt.event.MouseListener, java.awt.event.ActionListener, java.awt.event.ItemListener

Class for displaying a Node structure in Swing.

To work this class simply create an instance of it.

Assign it to a window or other such object.

Resize it to the desired size.

When using the Displayer hold the left mouse button to drag the tree around.

Click the left mouse button with ctrl to shrink the size of the tree by half.

Click and drag with the left mouse button and shift to draw a box, when the left mouse button is released the contents of the box will be magnified to fill the screen.

Click the right mouse button to bring up a menu.

Most options are self explanatory.

Select Auto Scale to set the tree to it's optimal display size.

Version:
  $Revision: 1.8.2.3 $
Author:
  Malcolm Ware (mfw4@cs.waikato.ac.nz)
See Also:
  Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class javax.swing.JComponent
`javax.swing.JComponent.AccessibleJComponent`

Field Summary

Fields inherited from class javax.swing.JComponent
`TOOL_TIP_TEXT_KEY, UNDEFINED_CONDITION, WHEN_ANCESTOR_OF_FOCUSED_COMPONENT, WHEN_FOCUSED, WHEN_IN_FOCUSED_WINDOW`

Fields inherited from class java.awt.Component
`BOTTOM_ALIGNMENT, CENTER_ALIGNMENT, LEFT_ALIGNMENT, RIGHT_ALIGNMENT, TOP_ALIGNMENT`

Fields inherited from interface java.awt.image.ImageObserver
`ABORT, ALLBITS, ERROR, FRAMEBITS, HEIGHT, PROPERTIES, SOMEBITS, WIDTH`

Constructor Summary
`TreeVisualizer(TreeDisplayListener tdl, Node n, NodePlace p)` Constructs Displayer with the specified Node as the top of the tree, and uses the NodePlacer to place the Nodes.
`TreeVisualizer(TreeDisplayListener tdl, java.lang.String dot, NodePlace p)` Constructs Displayer to display a tree provided in a dot format.

Method Summary
`void` | `actionPerformed(java.awt.event.ActionEvent e)` Performs the action associated with the ActionEvent.
`void` | `fitToScreen()` Fits the tree to the current screen size.
`void` | `itemStateChanged(java.awt.event.ItemEvent e)` Performs the action associated with the ItemEvent.
`static void` | `main(java.lang.String[] args)` Main method for testing this class.
`void` | `mouseClicked(java.awt.event.MouseEvent e)` Does nothing.
`void` | `mouseDragged(java.awt.event.MouseEvent e)` Performs intermediate updates to what the user wishes to do.
`void` | `mouseEntered(java.awt.event.MouseEvent e)` Does nothing.
`void` | `mouseExited(java.awt.event.MouseEvent e)` Does nothing.
`void` | `mouseMoved(java.awt.event.MouseEvent e)` Does nothing.
`void` | `mousePressed(java.awt.event.MouseEvent e)` Determines what action the user wants to perform.
`void` | `mouseReleased(java.awt.event.MouseEvent e)` Performs the final stages of what the user wants to perform.
`void` | `paintComponent(java.awt.Graphics g)` Updates the screen contents.
`void` | `setHighlight(java.lang.String id)` Set the highlight for the node with the given id

Methods inherited from class weka.gui.visualize.PrintablePanel
`getSaveDialogTitle, getWriter, getWriters, getXScale, getYScale, saveComponent, setSaveDialogTitle, setScale`

Methods inherited from class javax.swing.JPanel
`getAccessibleContext, getUI, getUIClassID, setUI, updateUI`

Methods inherited from class javax.swing.JComponent
`addAncestorListener, addNotify, addVetoableChangeListener, computeVisibleRect, contains, createToolTip, disable, enable, firePropertyChange, firePropertyChange, firePropertyChange, getActionForKeyStroke, getActionMap, getAlignmentX, getAlignmentY, getAncestorListeners, getAutoscrolls, getBorder, getBounds, getClientProperty, getComponentPopupMenu, getConditionForKeyStroke, getDebugGraphicsOptions, getDefaultLocale, getFontMetrics, getGraphics, getHeight, getInheritsPopupMenu, getInputMap, getInputMap, getInputVerifier, getInsets, getInsets, getListeners, getLocation, getMaximumSize, getMinimumSize, getNextFocusableComponent, getPopupLocation, getPreferredSize, getRegisteredKeyStrokes, getRootPane, getSize, getToolTipLocation, getToolTipText, getToolTipText, getTopLevelAncestor, getTransferHandler, getVerifyInputWhenFocusTarget, getVetoableChangeListeners, getVisibleRect, getWidth, getX, getY, grabFocus, isDoubleBuffered, isLightweightComponent, isManagingFocus, isOpaque, isOptimizedDrawingEnabled, isPaintingTile, isRequestFocusEnabled, isValidateRoot, paint, paintImmediately, paintImmediately, print, printAll, putClientProperty, registerKeyboardAction, registerKeyboardAction, removeAncestorListener, removeNotify, removeVetoableChangeListener, repaint, repaint, requestDefaultFocus, requestFocus, requestFocus, requestFocusInWindow, resetKeyboardActions, reshape, revalidate, scrollRectToVisible, setActionMap, setAlignmentX, setAlignmentY, setAutoscrolls, setBackground, setBorder, setComponentPopupMenu, setDebugGraphicsOptions, setDefaultLocale, setDoubleBuffered, setEnabled, setFocusTraversalKeys, setFont, setForeground, setInheritsPopupMenu, setInputMap, setInputVerifier, setMaximumSize, setMinimumSize, setNextFocusableComponent, setOpaque, setPreferredSize, setRequestFocusEnabled, setToolTipText, setTransferHandler, setVerifyInputWhenFocusTarget, setVisible, unregisterKeyboardAction, update`

Methods inherited from class java.awt.Container
`add, add, add, add, add, addContainerListener, addPropertyChangeListener, addPropertyChangeListener, applyComponentOrientation, areFocusTraversalKeysSet, countComponents, deliverEvent, doLayout, findComponentAt, findComponentAt, getComponent, getComponentAt, getComponentAt, getComponentCount, getComponents, getComponentZOrder, getContainerListeners, getFocusTraversalKeys, getFocusTraversalPolicy, getLayout, getMousePosition, insets, invalidate, isAncestorOf, isFocusCycleRoot, isFocusCycleRoot, isFocusTraversalPolicyProvider, isFocusTraversalPolicySet, layout, list, list, locate, minimumSize, paintComponents, preferredSize, printComponents, remove, remove, removeAll, removeContainerListener, setComponentZOrder, setFocusCycleRoot, setFocusTraversalPolicy, setFocusTraversalPolicyProvider, setLayout, transferFocusBackward, transferFocusDownCycle, validate`

Methods inherited from class java.awt.Component
`action, add, addComponentListener, addFocusListener, addHierarchyBoundsListener, addHierarchyListener, addInputMethodListener, addKeyListener, addMouseListener, addMouseMotionListener, addMouseWheelListener, bounds, checkImage, checkImage, contains, createImage, createImage, createVolatileImage, createVolatileImage, dispatchEvent, enable, enableInputMethods, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, getBackground, getBounds, getColorModel, getComponentListeners, getComponentOrientation, getCursor, getDropTarget, getFocusCycleRootAncestor, getFocusListeners, getFocusTraversalKeysEnabled, getFont, getForeground, getGraphicsConfiguration, getHierarchyBoundsListeners, getHierarchyListeners, getIgnoreRepaint, getInputContext, getInputMethodListeners, getInputMethodRequests, getKeyListeners, getLocale, getLocation, getLocationOnScreen, getMouseListeners, getMouseMotionListeners, getMousePosition, getMouseWheelListeners, getName, getParent, getPeer, getPropertyChangeListeners, getPropertyChangeListeners, getSize, getToolkit, getTreeLock, gotFocus, handleEvent, hasFocus, hide, imageUpdate, inside, isBackgroundSet, isCursorSet, isDisplayable, isEnabled, isFocusable, isFocusOwner, isFocusTraversable, isFontSet, isForegroundSet, isLightweight, isMaximumSizeSet, isMinimumSizeSet, isPreferredSizeSet, isShowing, isValid, isVisible, keyDown, keyUp, list, list, list, location, lostFocus, mouseDown, mouseDrag, mouseEnter, mouseExit, mouseMove, mouseUp, move, nextFocus, paintAll, postEvent, prepareImage, prepareImage, remove, removeComponentListener, removeFocusListener, removeHierarchyBoundsListener, removeHierarchyListener, removeInputMethodListener, removeKeyListener, removeMouseListener, removeMouseMotionListener, removeMouseWheelListener, removePropertyChangeListener, removePropertyChangeListener, repaint, repaint, repaint, resize, resize, setBounds, setBounds, setComponentOrientation, setCursor, setDropTarget, setFocusable, setFocusTraversalKeysEnabled, setIgnoreRepaint, setLocale, setLocation, setLocation, setName, setSize, setSize, show, show, size, toString, transferFocus, transferFocusUpCycle`

Methods inherited from class java.lang.Object
`equals, getClass, hashCode, notify, notifyAll, wait, wait, wait`

Constructor Detail

### TreeVisualizer

    public TreeVisualizer(TreeDisplayListener tdl,
                          java.lang.String dot,
                          NodePlace p)

  Constructs Displayer to display a tree provided in a dot format. Uses the NodePlacer to place the Nodes.

  Parameters:
    `tdl` - listener
    `dot` - string containing the dot representation of the tree to display
    `p` - the algorithm to be used to position the nodes.

### TreeVisualizer

    public TreeVisualizer(TreeDisplayListener tdl,
                          Node n,
                          NodePlace p)

  Constructs Displayer with the specified Node as the top of the tree, and uses the NodePlacer to place the Nodes.

  Parameters:
    `tdl` - listener.
    `n` - the top Node of the tree to be displayed.
    `p` - the algorithm to be used to position the nodes.

Method Detail

### fitToScreen

    public void fitToScreen()

  Fits the tree to the current screen size. Call this after window has been created to get the entrire tree to be in view upon launch.

### actionPerformed

    public void actionPerformed(java.awt.event.ActionEvent e)

  Performs the action associated with the ActionEvent.

  Specified by:
    `actionPerformed` in interface `java.awt.event.ActionListener`
  Parameters:
    `e` - the action event.

### itemStateChanged

    public void itemStateChanged(java.awt.event.ItemEvent e)

  Performs the action associated with the ItemEvent.

  Specified by:
    `itemStateChanged` in interface `java.awt.event.ItemListener`
  Parameters:
    `e` - the item event.

### mouseClicked

    public void mouseClicked(java.awt.event.MouseEvent e)

  Does nothing.

  Specified by:
    `mouseClicked` in interface `java.awt.event.MouseListener`
  Parameters:
    `e` - the mouse event.

### mousePressed

    public void mousePressed(java.awt.event.MouseEvent e)

  Determines what action the user wants to perform.

  Specified by:
    `mousePressed` in interface `java.awt.event.MouseListener`
  Parameters:
    `e` - the mouse event.

### mouseReleased

    public void mouseReleased(java.awt.event.MouseEvent e)

  Performs the final stages of what the user wants to perform.

  Specified by:
    `mouseReleased` in interface `java.awt.event.MouseListener`
  Parameters:
    `e` - the mouse event.

### mouseDragged

    public void mouseDragged(java.awt.event.MouseEvent e)

  Performs intermediate updates to what the user wishes to do.

  Specified by:
    `mouseDragged` in interface `java.awt.event.MouseMotionListener`
  Parameters:
    `e` - the mouse event.

### mouseMoved

    public void mouseMoved(java.awt.event.MouseEvent e)

  Does nothing.

  Specified by:
    `mouseMoved` in interface `java.awt.event.MouseMotionListener`
  Parameters:
    `e` - the mouse event.

### mouseEntered

    public void mouseEntered(java.awt.event.MouseEvent e)

  Does nothing.

  Specified by:
    `mouseEntered` in interface `java.awt.event.MouseListener`
  Parameters:
    `e` - the mouse event.

### mouseExited

    public void mouseExited(java.awt.event.MouseEvent e)

  Does nothing.

  Specified by:
    `mouseExited` in interface `java.awt.event.MouseListener`
  Parameters:
    `e` - the mouse event.

### setHighlight

    public void setHighlight(java.lang.String id)

  Set the highlight for the node with the given id

  Parameters:
    `id` - the id of the node to set the highlight for

### paintComponent

    public void paintComponent(java.awt.Graphics g)

  Updates the screen contents.

  Overrides:
    `paintComponent` in class `javax.swing.JComponent`
  Parameters:
    `g` - the drawing surface.

### main

    public static void main(java.lang.String[] args)

  Main method for testing this class.

  Parameters:
    `args` - first argument should be the name of a file that contains a tree discription in dot format.

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