- java.lang.Object
-
- java.awt.Component
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- java.awt.Container
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- javax.swing.JComponent
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- javax.swing.JSplitPane
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- All Implemented Interfaces:
- ImageObserver, MenuContainer, Serializable, Accessible
public class JSplitPane extends JComponent implements Accessible
JSplitPane
is used to divide two (and only two)Component
s. The twoComponent
s are graphically divided based on the look and feel implementation, and the twoComponent
s can then be interactively resized by the user. Information on usingJSplitPane
is in How to Use Split Panes in The Java Tutorial.The two
Component
s in a split pane can be aligned left to right usingJSplitPane.HORIZONTAL_SPLIT
, or top to bottom usingJSplitPane.VERTICAL_SPLIT
. The preferred way to change the size of theComponent
s is to invokesetDividerLocation
wherelocation
is either the new x or y position, depending on the orientation of theJSplitPane
.To resize the
Component
s to their preferred sizes invokeresetToPreferredSizes
.When the user is resizing the
Component
s the minimum size of theComponents
is used to determine the maximum/minimum position theComponent
s can be set to. If the minimum size of the two components is greater than the size of the split pane the divider will not allow you to resize it. To alter the minimum size of aJComponent
, seeJComponent.setMinimumSize(java.awt.Dimension)
.When the user resizes the split pane the new space is distributed between the two components based on the
resizeWeight
property. A value of 0, the default, indicates the right/bottom component gets all the space, where as a value of 1 indicates the left/top component gets all the space.Warning: Swing is not thread safe. For more information see Swing's Threading Policy.
Warning: Serialized objects of this class will not be compatible with future Swing releases. The current serialization support is appropriate for short term storage or RMI between applications running the same version of Swing. As of 1.4, support for long term storage of all JavaBeansTM has been added to the
java.beans
package. Please seeXMLEncoder
.
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Nested Class Summary
Nested Classes Modifier and Type Class and Description protected class
JSplitPane.AccessibleJSplitPane
This class implements accessibility support for theJSplitPane
class.-
Nested classes/interfaces inherited from class javax.swing.JComponent
JComponent.AccessibleJComponent
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Nested classes/interfaces inherited from class java.awt.Container
Container.AccessibleAWTContainer
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Nested classes/interfaces inherited from class java.awt.Component
Component.AccessibleAWTComponent, Component.BaselineResizeBehavior, Component.BltBufferStrategy, Component.FlipBufferStrategy
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Field Summary
Fields Modifier and Type Field and Description static String
BOTTOM
Used to add aComponent
below the otherComponent
.static String
CONTINUOUS_LAYOUT_PROPERTY
Bound property name for continuousLayout.protected boolean
continuousLayout
Whether or not the views are continuously redisplayed while resizing.static String
DIVIDER
Used to add aComponent
that will represent the divider.static String
DIVIDER_LOCATION_PROPERTY
Bound property for the dividerLocation.static String
DIVIDER_SIZE_PROPERTY
Bound property name for border.protected int
dividerSize
Size of the divider.static int
HORIZONTAL_SPLIT
Horizontal split indicates theComponent
s are split along the x axis.static String
LAST_DIVIDER_LOCATION_PROPERTY
Bound property for lastLocation.protected int
lastDividerLocation
Previous location of the split pane.static String
LEFT
Used to add aComponent
to the left of the otherComponent
.protected Component
leftComponent
The left or top component.static String
ONE_TOUCH_EXPANDABLE_PROPERTY
Bound property for oneTouchExpandable.protected boolean
oneTouchExpandable
Is a little widget provided to quickly expand/collapse the split pane?protected int
orientation
How the views are split.static String
ORIENTATION_PROPERTY
Bound property name for orientation (horizontal or vertical).static String
RESIZE_WEIGHT_PROPERTY
Bound property for weight.static String
RIGHT
Used to add aComponent
to the right of the otherComponent
.protected Component
rightComponent
The right or bottom component.static String
TOP
Used to add aComponent
above the otherComponent
.static int
VERTICAL_SPLIT
Vertical split indicates theComponent
s are split along the y axis.-
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
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Fields inherited from class java.awt.Component
BOTTOM_ALIGNMENT, CENTER_ALIGNMENT, LEFT_ALIGNMENT, RIGHT_ALIGNMENT, TOP_ALIGNMENT
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Constructor Summary
Constructors Constructor and Description JSplitPane()
Creates a newJSplitPane
configured to arrange the child components side-by-side horizontally, using two buttons for the components.JSplitPane(int newOrientation)
Creates a newJSplitPane
configured with the specified orientation.JSplitPane(int newOrientation, boolean newContinuousLayout)
Creates a newJSplitPane
with the specified orientation and redrawing style.JSplitPane(int newOrientation, boolean newContinuousLayout, Component newLeftComponent, Component newRightComponent)
Creates a newJSplitPane
with the specified orientation and redrawing style, and with the specified components.JSplitPane(int newOrientation, Component newLeftComponent, Component newRightComponent)
Creates a newJSplitPane
with the specified orientation and the specified components.
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Method Summary
Methods Modifier and Type Method and Description protected void
addImpl(Component comp, Object constraints, int index)
Adds the specified component to this split pane.AccessibleContext
getAccessibleContext()
Gets the AccessibleContext associated with this JSplitPane.Component
getBottomComponent()
Returns the component below, or to the right of the divider.int
getDividerLocation()
Returns the last value passed tosetDividerLocation
.int
getDividerSize()
Returns the size of the divider.int
getLastDividerLocation()
Returns the last location the divider was at.Component
getLeftComponent()
Returns the component to the left (or above) the divider.int
getMaximumDividerLocation()
Returns the maximum location of the divider from the look and feel implementation.int
getMinimumDividerLocation()
Returns the minimum location of the divider from the look and feel implementation.int
getOrientation()
Returns the orientation.double
getResizeWeight()
Returns the number that determines how extra space is distributed.Component
getRightComponent()
Returns the component to the right (or below) the divider.Component
getTopComponent()
Returns the component above, or to the left of the divider.SplitPaneUI
getUI()
Returns theSplitPaneUI
that is providing the current look and feel.String
getUIClassID()
Returns the name of the L&F class that renders this component.boolean
isContinuousLayout()
Gets thecontinuousLayout
property.boolean
isOneTouchExpandable()
Gets theoneTouchExpandable
property.boolean
isValidateRoot()
Returns true, so that calls torevalidate
on any descendant of thisJSplitPane
will cause a request to be queued that will validate theJSplitPane
and all its descendants.protected void
paintChildren(Graphics g)
Subclassed to message the UI withfinishedPaintingChildren
after super has been messaged, as well as painting the border.protected String
paramString()
Returns a string representation of thisJSplitPane
.void
remove(Component component)
Removes the child component,component
from the pane.void
remove(int index)
Removes theComponent
at the specified index.void
removeAll()
Removes all the child components from the split pane.void
resetToPreferredSizes()
Lays out theJSplitPane
layout based on the preferred size of the children components.void
setBottomComponent(Component comp)
Sets the component below, or to the right of the divider.void
setContinuousLayout(boolean newContinuousLayout)
Sets the value of thecontinuousLayout
property, which must betrue
for the child components to be continuously redisplayed and laid out during user intervention.void
setDividerLocation(double proportionalLocation)
Sets the divider location as a percentage of theJSplitPane
's size.void
setDividerLocation(int location)
Sets the location of the divider.void
setDividerSize(int newSize)
Sets the size of the divider.void
setLastDividerLocation(int newLastLocation)
Sets the last location the divider was at tonewLastLocation
.void
setLeftComponent(Component comp)
Sets the component to the left (or above) the divider.void
setOneTouchExpandable(boolean newValue)
Sets the value of theoneTouchExpandable
property, which must betrue
for theJSplitPane
to provide a UI widget on the divider to quickly expand/collapse the divider.void
setOrientation(int orientation)
Sets the orientation, or how the splitter is divided.void
setResizeWeight(double value)
Specifies how to distribute extra space when the size of the split pane changes.void
setRightComponent(Component comp)
Sets the component to the right (or below) the divider.void
setTopComponent(Component comp)
Sets the component above, or to the left of the divider.void
setUI(SplitPaneUI ui)
Sets the L&F object that renders this component.void
updateUI()
Notification from theUIManager
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, 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, hide, isDoubleBuffered, isLightweightComponent, isManagingFocus, isOpaque, isOptimizedDrawingEnabled, isPaintingForPrint, isPaintingOrigin, isPaintingTile, isRequestFocusEnabled, paint, paintBorder, paintComponent, paintImmediately, paintImmediately, 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
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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, processContainerEvent, processEvent, removeContainerListener, setComponentZOrder, setFocusCycleRoot, setFocusTraversalPolicy, setFocusTraversalPolicyProvider, setLayout, transferFocusDownCycle, validate, validateTree
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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, 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, transferFocusBackward, transferFocusUpCycle
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Field Detail
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VERTICAL_SPLIT
public static final int VERTICAL_SPLIT
Vertical split indicates theComponent
s are split along the y axis. For example the twoComponent
s will be split one on top of the other.- See Also:
- Constant Field Values
-
HORIZONTAL_SPLIT
public static final int HORIZONTAL_SPLIT
Horizontal split indicates theComponent
s are split along the x axis. For example the twoComponent
s will be split one to the left of the other.- See Also:
- Constant Field Values
-
LEFT
public static final String LEFT
Used to add aComponent
to the left of the otherComponent
.- See Also:
- Constant Field Values
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RIGHT
public static final String RIGHT
Used to add aComponent
to the right of the otherComponent
.- See Also:
- Constant Field Values
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TOP
public static final String TOP
Used to add aComponent
above the otherComponent
.- See Also:
- Constant Field Values
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BOTTOM
public static final String BOTTOM
Used to add aComponent
below the otherComponent
.- See Also:
- Constant Field Values
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DIVIDER
public static final String DIVIDER
Used to add aComponent
that will represent the divider.- See Also:
- Constant Field Values
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ORIENTATION_PROPERTY
public static final String ORIENTATION_PROPERTY
Bound property name for orientation (horizontal or vertical).- See Also:
- Constant Field Values
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CONTINUOUS_LAYOUT_PROPERTY
public static final String CONTINUOUS_LAYOUT_PROPERTY
Bound property name for continuousLayout.- See Also:
- Constant Field Values
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DIVIDER_SIZE_PROPERTY
public static final String DIVIDER_SIZE_PROPERTY
Bound property name for border.- See Also:
- Constant Field Values
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ONE_TOUCH_EXPANDABLE_PROPERTY
public static final String ONE_TOUCH_EXPANDABLE_PROPERTY
Bound property for oneTouchExpandable.- See Also:
- Constant Field Values
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LAST_DIVIDER_LOCATION_PROPERTY
public static final String LAST_DIVIDER_LOCATION_PROPERTY
Bound property for lastLocation.- See Also:
- Constant Field Values
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DIVIDER_LOCATION_PROPERTY
public static final String DIVIDER_LOCATION_PROPERTY
Bound property for the dividerLocation.- Since:
- 1.3
- See Also:
- Constant Field Values
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RESIZE_WEIGHT_PROPERTY
public static final String RESIZE_WEIGHT_PROPERTY
Bound property for weight.- Since:
- 1.3
- See Also:
- Constant Field Values
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orientation
protected int orientation
How the views are split.
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continuousLayout
protected boolean continuousLayout
Whether or not the views are continuously redisplayed while resizing.
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leftComponent
protected Component leftComponent
The left or top component.
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rightComponent
protected Component rightComponent
The right or bottom component.
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dividerSize
protected int dividerSize
Size of the divider.
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oneTouchExpandable
protected boolean oneTouchExpandable
Is a little widget provided to quickly expand/collapse the split pane?
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lastDividerLocation
protected int lastDividerLocation
Previous location of the split pane.
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Constructor Detail
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JSplitPane
public JSplitPane()
Creates a newJSplitPane
configured to arrange the child components side-by-side horizontally, using two buttons for the components.
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JSplitPane
@ConstructorProperties(value="orientation") public JSplitPane(int newOrientation)
Creates a newJSplitPane
configured with the specified orientation.- Parameters:
newOrientation
-JSplitPane.HORIZONTAL_SPLIT
orJSplitPane.VERTICAL_SPLIT
- Throws:
IllegalArgumentException
- iforientation
is not one of HORIZONTAL_SPLIT or VERTICAL_SPLIT.
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JSplitPane
public JSplitPane(int newOrientation, boolean newContinuousLayout)
Creates a newJSplitPane
with the specified orientation and redrawing style.- Parameters:
newOrientation
-JSplitPane.HORIZONTAL_SPLIT
orJSplitPane.VERTICAL_SPLIT
newContinuousLayout
- a boolean, true for the components to redraw continuously as the divider changes position, false to wait until the divider position stops changing to redraw- Throws:
IllegalArgumentException
- iforientation
is not one of HORIZONTAL_SPLIT or VERTICAL_SPLIT
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JSplitPane
public JSplitPane(int newOrientation, Component newLeftComponent, Component newRightComponent)
Creates a newJSplitPane
with the specified orientation and the specified components.- Parameters:
newOrientation
-JSplitPane.HORIZONTAL_SPLIT
orJSplitPane.VERTICAL_SPLIT
newLeftComponent
- theComponent
that will appear on the left of a horizontally-split pane, or at the top of a vertically-split panenewRightComponent
- theComponent
that will appear on the right of a horizontally-split pane, or at the bottom of a vertically-split pane- Throws:
IllegalArgumentException
- iforientation
is not one of: HORIZONTAL_SPLIT or VERTICAL_SPLIT
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JSplitPane
public JSplitPane(int newOrientation, boolean newContinuousLayout, Component newLeftComponent, Component newRightComponent)
Creates a newJSplitPane
with the specified orientation and redrawing style, and with the specified components.- Parameters:
newOrientation
-JSplitPane.HORIZONTAL_SPLIT
orJSplitPane.VERTICAL_SPLIT
newContinuousLayout
- a boolean, true for the components to redraw continuously as the divider changes position, false to wait until the divider position stops changing to redrawnewLeftComponent
- theComponent
that will appear on the left of a horizontally-split pane, or at the top of a vertically-split panenewRightComponent
- theComponent
that will appear on the right of a horizontally-split pane, or at the bottom of a vertically-split pane- Throws:
IllegalArgumentException
- iforientation
is not one of HORIZONTAL_SPLIT or VERTICAL_SPLIT
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Method Detail
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setUI
public void setUI(SplitPaneUI ui)
Sets the L&F object that renders this component.- Parameters:
ui
- theSplitPaneUI
L&F object- See Also:
UIDefaults.getUI(javax.swing.JComponent)
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getUI
public SplitPaneUI getUI()
Returns theSplitPaneUI
that is providing the current look and feel.- Returns:
- the
SplitPaneUI
object that renders this component
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updateUI
public void updateUI()
Notification from theUIManager
that the L&F has changed. Replaces the current UI object with the latest version from theUIManager
.- Overrides:
updateUI
in classJComponent
- See Also:
JComponent.updateUI()
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getUIClassID
public String getUIClassID()
Returns the name of the L&F class that renders this component.- Overrides:
getUIClassID
in classJComponent
- Returns:
- the string "SplitPaneUI"
- See Also:
JComponent.getUIClassID()
,UIDefaults.getUI(javax.swing.JComponent)
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setDividerSize
public void setDividerSize(int newSize)
Sets the size of the divider.- Parameters:
newSize
- an integer giving the size of the divider in pixels
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getDividerSize
public int getDividerSize()
Returns the size of the divider.- Returns:
- an integer giving the size of the divider in pixels
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setLeftComponent
public void setLeftComponent(Component comp)
Sets the component to the left (or above) the divider.- Parameters:
comp
- theComponent
to display in that position
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getLeftComponent
public Component getLeftComponent()
Returns the component to the left (or above) the divider.- Returns:
- the
Component
displayed in that position
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setTopComponent
public void setTopComponent(Component comp)
Sets the component above, or to the left of the divider.- Parameters:
comp
- theComponent
to display in that position
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getTopComponent
public Component getTopComponent()
Returns the component above, or to the left of the divider.- Returns:
- the
Component
displayed in that position
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setRightComponent
public void setRightComponent(Component comp)
Sets the component to the right (or below) the divider.- Parameters:
comp
- theComponent
to display in that position
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getRightComponent
public Component getRightComponent()
Returns the component to the right (or below) the divider.- Returns:
- the
Component
displayed in that position
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setBottomComponent
public void setBottomComponent(Component comp)
Sets the component below, or to the right of the divider.- Parameters:
comp
- theComponent
to display in that position
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getBottomComponent
public Component getBottomComponent()
Returns the component below, or to the right of the divider.- Returns:
- the
Component
displayed in that position
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setOneTouchExpandable
public void setOneTouchExpandable(boolean newValue)
Sets the value of theoneTouchExpandable
property, which must betrue
for theJSplitPane
to provide a UI widget on the divider to quickly expand/collapse the divider. The default value of this property isfalse
. Some look and feels might not support one-touch expanding; they will ignore this property.- Parameters:
newValue
-true
to specify that the split pane should provide a collapse/expand widget- See Also:
isOneTouchExpandable()
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isOneTouchExpandable
public boolean isOneTouchExpandable()
Gets theoneTouchExpandable
property.- Returns:
- the value of the
oneTouchExpandable
property - See Also:
setOneTouchExpandable(boolean)
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setLastDividerLocation
public void setLastDividerLocation(int newLastLocation)
Sets the last location the divider was at tonewLastLocation
.- Parameters:
newLastLocation
- an integer specifying the last divider location in pixels, from the left (or upper) edge of the pane to the left (or upper) edge of the divider
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getLastDividerLocation
public int getLastDividerLocation()
Returns the last location the divider was at.- Returns:
- an integer specifying the last divider location as a count of pixels from the left (or upper) edge of the pane to the left (or upper) edge of the divider
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setOrientation
public void setOrientation(int orientation)
Sets the orientation, or how the splitter is divided. The options are:- JSplitPane.VERTICAL_SPLIT (above/below orientation of components)
- JSplitPane.HORIZONTAL_SPLIT (left/right orientation of components)
- Parameters:
orientation
- an integer specifying the orientation- Throws:
IllegalArgumentException
- if orientation is not one of: HORIZONTAL_SPLIT or VERTICAL_SPLIT.
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getOrientation
public int getOrientation()
Returns the orientation.- Returns:
- an integer giving the orientation
- See Also:
setOrientation(int)
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setContinuousLayout
public void setContinuousLayout(boolean newContinuousLayout)
Sets the value of thecontinuousLayout
property, which must betrue
for the child components to be continuously redisplayed and laid out during user intervention. The default value of this property is look and feel dependent. Some look and feels might not support continuous layout; they will ignore this property.- Parameters:
newContinuousLayout
-true
if the components should continuously be redrawn as the divider changes position- See Also:
isContinuousLayout()
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isContinuousLayout
public boolean isContinuousLayout()
Gets thecontinuousLayout
property.- Returns:
- the value of the
continuousLayout
property - See Also:
setContinuousLayout(boolean)
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setResizeWeight
public void setResizeWeight(double value)
Specifies how to distribute extra space when the size of the split pane changes. A value of 0, the default, indicates the right/bottom component gets all the extra space (the left/top component acts fixed), where as a value of 1 specifies the left/top component gets all the extra space (the right/bottom component acts fixed). Specifically, the left/top component gets (weight * diff) extra space and the right/bottom component gets (1 - weight) * diff extra space.- Parameters:
value
- as described above- Throws:
IllegalArgumentException
- ifvalue
is < 0 or > 1- Since:
- 1.3
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getResizeWeight
public double getResizeWeight()
Returns the number that determines how extra space is distributed.- Returns:
- how extra space is to be distributed on a resize of the split pane
- Since:
- 1.3
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resetToPreferredSizes
public void resetToPreferredSizes()
Lays out theJSplitPane
layout based on the preferred size of the children components. This will likely result in changing the divider location.
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setDividerLocation
public void setDividerLocation(double proportionalLocation)
Sets the divider location as a percentage of theJSplitPane
's size.This method is implemented in terms of
setDividerLocation(int)
. This method immediately changes the size of the split pane based on its current size. If the split pane is not correctly realized and on screen, this method will have no effect (new divider location will become (current size * proportionalLocation) which is 0).- Parameters:
proportionalLocation
- a double-precision floating point value that specifies a percentage, from zero (top/left) to 1.0 (bottom/right)- Throws:
IllegalArgumentException
- if the specified location is < 0 or > 1.0
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setDividerLocation
public void setDividerLocation(int location)
Sets the location of the divider. This is passed off to the look and feel implementation, and then listeners are notified. A value less than 0 implies the divider should be reset to a value that attempts to honor the preferred size of the left/top component. After notifying the listeners, the last divider location is updated, viasetLastDividerLocation
.- Parameters:
location
- an int specifying a UI-specific value (typically a pixel count)
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getDividerLocation
public int getDividerLocation()
Returns the last value passed tosetDividerLocation
. The value returned from this method may differ from the actual divider location (ifsetDividerLocation
was passed a value bigger than the curent size).- Returns:
- an integer specifying the location of the divider
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getMinimumDividerLocation
public int getMinimumDividerLocation()
Returns the minimum location of the divider from the look and feel implementation.- Returns:
- an integer specifying a UI-specific value for the minimum
location (typically a pixel count); or -1 if the UI is
null
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getMaximumDividerLocation
public int getMaximumDividerLocation()
Returns the maximum location of the divider from the look and feel implementation.- Returns:
- an integer specifying a UI-specific value for the maximum
location (typically a pixel count); or -1 if the UI is
null
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remove
public void remove(Component component)
Removes the child component,component
from the pane. Resets theleftComponent
orrightComponent
instance variable, as necessary.- Overrides:
remove
in classContainer
- Parameters:
component
- theComponent
to remove- See Also:
Container.add(java.awt.Component)
,Container.invalidate()
,Container.validate()
,Container.remove(int)
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remove
public void remove(int index)
Removes theComponent
at the specified index. Updates theleftComponent
andrightComponent
instance variables as necessary, and then messages super.- Overrides:
remove
in classContainer
- Parameters:
index
- an integer specifying the component to remove, where 1 specifies the left/top component and 2 specifies the bottom/right component- See Also:
Container.add(java.awt.Component)
,Container.invalidate()
,Container.validate()
,Container.getComponentCount()
-
removeAll
public void removeAll()
Removes all the child components from the split pane. Resets theleftComonent
andrightComponent
instance variables.- Overrides:
removeAll
in classContainer
- See Also:
Container.add(java.awt.Component)
,Container.remove(int)
,Container.invalidate()
-
isValidateRoot
public boolean isValidateRoot()
Returns true, so that calls torevalidate
on any descendant of thisJSplitPane
will cause a request to be queued that will validate theJSplitPane
and all its descendants.- Overrides:
isValidateRoot
in classJComponent
- Returns:
- true
- See Also:
JComponent.revalidate()
,Container.isValidateRoot()
-
addImpl
protected void addImpl(Component comp, Object constraints, int index)
Adds the specified component to this split pane. Ifconstraints
identifies the left/top or right/bottom child component, and a component with that identifier was previously added, it will be removed and thencomp
will be added in its place. Ifconstraints
is not one of the known identifiers the layout manager may throw anIllegalArgumentException
.The possible constraints objects (Strings) are:
- JSplitPane.TOP
- JSplitPane.LEFT
- JSplitPane.BOTTOM
- JSplitPane.RIGHT
constraints
object isnull
, the component is added in the first available position (left/top if open, else right/bottom).- Overrides:
addImpl
in classContainer
- Parameters:
comp
- the component to addconstraints
- anObject
specifying the layout constraints (position) for this componentindex
- an integer specifying the index in the container's list.- Throws:
IllegalArgumentException
- if theconstraints
object does not match an existing component- See Also:
Container.addImpl(Component, Object, int)
-
paintChildren
protected void paintChildren(Graphics g)
Subclassed to message the UI withfinishedPaintingChildren
after super has been messaged, as well as painting the border.- Overrides:
paintChildren
in classJComponent
- Parameters:
g
- theGraphics
context within which to paint- See Also:
JComponent.paint(java.awt.Graphics)
,Container.paint(java.awt.Graphics)
-
paramString
protected String paramString()
Returns a string representation of thisJSplitPane
. This method is intended to be used only for debugging purposes, and the content and format of the returned string may vary between implementations. The returned string may be empty but may not benull
.- Overrides:
paramString
in classJComponent
- Returns:
- a string representation of this
JSplitPane
.
-
getAccessibleContext
public AccessibleContext getAccessibleContext()
Gets the AccessibleContext associated with this JSplitPane. For split panes, the AccessibleContext takes the form of an AccessibleJSplitPane. A new AccessibleJSplitPane instance is created if necessary.- Specified by:
getAccessibleContext
in interfaceAccessible
- Overrides:
getAccessibleContext
in classJComponent
- Returns:
- an AccessibleJSplitPane that serves as the AccessibleContext of this JSplitPane
-
-
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Dokument erstellt 11/06/2005, zuletzt geändert 04/03/2020
Quelle des gedruckten Dokuments:https://www.gaudry.be/de/java-api-rf-javax/swing/jsplitpane.html
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