org.jdesktop.swingx
Class JXStatusBar

java.lang.Object
  extended by java.awt.Component
      extended by java.awt.Container
          extended by javax.swing.JComponent
              extended by org.jdesktop.swingx.JXStatusBar
All Implemented Interfaces:
ImageObserver, MenuContainer, Serializable

public class JXStatusBar
extends JComponent

A container for JComponents that is typically placed at the bottom of a form and runs the entire width of the form. There are 3 important functions that JXStatusBar provides. First, JXStatusBar provides a hook for a pluggable look. There is a definite look associated with status bars on windows, for instance. By implementing a subclass of JComponent, we provide a way for the pluggable look and feel system to modify the look of the status bar.

Second, JXStatusBar comes with its own layout manager. Each item is added to the JXStatusBar with a JXStatusBar.Constraint as the constraint argument. The JXStatusBar.Constraint contains an Insets object, as well as a ResizeBehavior, which can be FIXED or FILL. The resize behaviour applies to the width of components. All components added will maintain there preferred height, and the height of the JXStatusBar will be the height of the highest component plus insets.

A constraint with JXStatusBar.Constraint.ResizeBehavior.FIXED will cause the component to occupy a fixed area on the JXStatusBar. The size of the area remains constant when the JXStatusBar is resized. A constraint with this behavior may also take a width value, see JXStatusBar.Constraint.setFixedWidth(int). The width is a preferred minimum width. If the component preferred width is greater than the constraint width, the component width will apply.

All components with constraint JXStatusBar.Constraint.ResizeBehavior.FILL will share equally any spare space in the JXStatusBar. Spare space is that left over after allowing for all FIXED component and the preferred width of FILL components, plus insets

Constructing a JXStatusBar is very straightforward:


      JXStatusBar bar = new JXStatusBar();
      JLabel statusLabel = new JLabel("Ready");
      JXStatusBar.Constraint c1 = new JXStatusBarConstraint() 
      c1.setFixedWidth(100);
      bar.add(statusLabel, c1);     // Fixed width of 100 with no inserts
      JXStatusBar.Constraint c2 = new JXStatusBarConstraint(
              JXStatusBar.Constraint.ResizeBehavior.FILL) // Fill with no inserts
      JProgressBar pbar = new JProgressBar();
      bar.add(pbar, c2);            // Fill with no inserts - will use remaining space
 

Two common use cases for status bars include tracking application status and progress. JXStatusBar does not manage these tasks, but instead special components exist or can be created that do manage these tasks. For example, if your application has a TaskManager or some other repository of currently running jobs, you could easily create a TaskManagerProgressBar that tracks those jobs. This component could then be added to the JXStatusBar like any other component.

Client Properties

The BasicStatusBarUI.AUTO_ADD_SEPARATOR client property can be specified, which will disable the auto-adding of separators. In this case, you must add your own JSeparator components. To use:


      JXStatusBar sbar = new JXStatusBar();
      sbar.putClientProperty(BasicStatusBarUI.AUTO_ADD_SEPARATOR, false);
      sbar.add(comp1);
      sbar.add(new JSeparator(JSeparator.VERTICAL));
      sbar.add(comp2);
      sbar.add(comp3);
  

See Also:
Serialized Form
Review status:
REVIEWED

Nested Class Summary
static class JXStatusBar.Constraint
          The constraint object to be used with the JXStatusBar.
 
Nested classes/interfaces inherited from class javax.swing.JComponent
JComponent.AccessibleJComponent
 
Nested classes/interfaces inherited from class java.awt.Container
Container.AccessibleAWTContainer
 
Nested classes/interfaces inherited from class java.awt.Component
Component.AccessibleAWTComponent, Component.BaselineResizeBehavior, Component.BltBufferStrategy, Component.FlipBufferStrategy
 
Field Summary
static String uiClassID
           
 
Fields inherited from class javax.swing.JComponent
accessibleContext, listenerList, TOOL_TIP_TEXT_KEY, ui, 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
JXStatusBar()
          Creates a new JXStatusBar
 
Method Summary
 StatusBarUI getUI()
          Returns the look and feel (L&F) object that renders this component.
 String getUIClassID()
          Returns a string that specifies the name of the L&F class that renders this component.
 boolean isResizeHandleEnabled()
           
 void setResizeHandleEnabled(boolean resizeHandleEnabled)
           
 void setUI(StatusBarUI ui)
          Sets the look and feel (L&F) object that renders this component.
 void updateUI()
          Notification from the UIManager that the L&F has changed.
 
Methods inherited from class javax.swing.JComponent
addAncestorListener, addNotify, addVetoableChangeListener, computeVisibleRect, contains, createToolTip, disable, enable, firePropertyChange, firePropertyChange, firePropertyChange, fireVetoableChange, getAccessibleContext, getActionForKeyStroke, getActionMap, getAlignmentX, getAlignmentY, getAncestorListeners, getAutoscrolls, getBaseline, getBaselineResizeBehavior, getBorder, getBounds, getClientProperty, getComponentGraphics, 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, isPaintingForPrint, isPaintingTile, isRequestFocusEnabled, isValidateRoot, paint, paintBorder, paintChildren, paintComponent, paintImmediately, paintImmediately, paramString, print, printAll, printBorder, printChildren, printComponent, processComponentKeyEvent, processKeyBinding, processKeyEvent, processMouseEvent, processMouseMotionEvent, putClientProperty, registerKeyboardAction, registerKeyboardAction, removeAncestorListener, removeNotify, removeVetoableChangeListener, repaint, repaint, requestDefaultFocus, requestFocus, requestFocus, requestFocusInWindow, 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, setUI, setVerifyInputWhenFocusTarget, setVisible, unregisterKeyboardAction, update
 
Methods inherited from class java.awt.Container
add, add, add, add, add, addContainerListener, addImpl, 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, processContainerEvent, processEvent, remove, remove, removeAll, removeContainerListener, setComponentZOrder, setFocusCycleRoot, setFocusTraversalPolicy, setFocusTraversalPolicyProvider, setLayout, transferFocusBackward, transferFocusDownCycle, validate, validateTree
 
Methods inherited from class java.awt.Component
action, add, addComponentListener, addFocusListener, addHierarchyBoundsListener, addHierarchyListener, addInputMethodListener, addKeyListener, addMouseListener, addMouseMotionListener, addMouseWheelListener, bounds, checkImage, checkImage, coalesceEvents, contains, createImage, createImage, createVolatileImage, createVolatileImage, disableEvents, dispatchEvent, enable, enableEvents, enableInputMethods, firePropertyChange, 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, processComponentEvent, processFocusEvent, processHierarchyBoundsEvent, processHierarchyEvent, processInputMethodEvent, processMouseWheelEvent, 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
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait
 

Field Detail

uiClassID

public static final String uiClassID
See Also:
getUIClassID(), JComponent.readObject(java.io.ObjectInputStream), Constant Field Values
Constructor Detail

JXStatusBar

public JXStatusBar()
Creates a new JXStatusBar

Method Detail

setResizeHandleEnabled

public void setResizeHandleEnabled(boolean resizeHandleEnabled)
Parameters:
resizeHandleEnabled - the resizeHandleEnabled to set

isResizeHandleEnabled

public boolean isResizeHandleEnabled()
Returns:
the resizeHandleEnabled

getUI

public StatusBarUI getUI()
Returns the look and feel (L&F) object that renders this component.

Returns:
the StatusBarUI object that renders this component

setUI

public void setUI(StatusBarUI ui)
Sets the look and feel (L&F) object that renders this component.

Parameters:
ui - the StatusBarUI L&F object
See Also:
UIDefaults.getUI(javax.swing.JComponent)
This class has associated bean info for instrumenting visual editors named
bound: true hidden: true attribute: visualUpdate true description: The component's look and feel delegate.

getUIClassID

public String getUIClassID()
Returns a string that specifies the name of the L&F class that renders this component.

Overrides:
getUIClassID in class JComponent
Returns:
"StatusBarUI"
See Also:
JComponent.getUIClassID(), UIDefaults.getUI(javax.swing.JComponent)
This class has associated bean info for instrumenting visual editors named
expert: true description: A string that specifies the name of the L&F class.

updateUI

public void updateUI()
Notification from the UIManager that the L&F has changed. Replaces the current UI object with the latest version from the UIManager.

Overrides:
updateUI in class JComponent
See Also:
JComponent.updateUI()