Class BasicTabbedPaneUI

• java.lang.Object
• • javax.swing.plaf.ComponentUI
  • • javax.swing.plaf.TabbedPaneUI
    • • javax.swing.plaf.basic.BasicTabbedPaneUI

All Implemented Interfaces:

SwingConstants

Direct Known Subclasses:

MetalTabbedPaneUI, SynthTabbedPaneUI

public class BasicTabbedPaneUI
extends TabbedPaneUI
implements SwingConstants

A Basic L&F implementation of TabbedPaneUI.

Nested Classes

Nested Classes

Modifier and Type	Class and Description
class	BasicTabbedPaneUI.FocusHandler This class should be treated as a "protected" inner class.
class	BasicTabbedPaneUI.MouseHandler This class should be treated as a "protected" inner class.
class	BasicTabbedPaneUI.PropertyChangeHandler This class should be treated as a "protected" inner class.
class	BasicTabbedPaneUI.TabbedPaneLayout This class should be treated as a "protected" inner class.
class	BasicTabbedPaneUI.TabSelectionHandler This class should be treated as a "protected" inner class.

Fields

tabPane

protected JTabbedPane tabPane

highlight

protected Color highlight

lightHighlight

protected Color lightHighlight

shadow

protected Color shadow

darkShadow

protected Color darkShadow

focus

protected Color focus

textIconGap

protected int textIconGap

tabRunOverlay

protected int tabRunOverlay

tabInsets

protected Insets tabInsets

selectedTabPadInsets

protected Insets selectedTabPadInsets

tabAreaInsets

protected Insets tabAreaInsets

contentBorderInsets

protected Insets contentBorderInsets

upKey

@Deprecated
protected KeyStroke upKey

Deprecated. As of Java 2 platform v1.3.

As of Java 2 platform v1.3 this previously undocumented field is no longer used. Key bindings are now defined by the LookAndFeel, please refer to the key bindings specification for further details.

downKey

@Deprecated
protected KeyStroke downKey

Deprecated. As of Java 2 platform v1.3.

As of Java 2 platform v1.3 this previously undocumented field is no longer used. Key bindings are now defined by the LookAndFeel, please refer to the key bindings specification for further details.

leftKey

@Deprecated
protected KeyStroke leftKey

Deprecated. As of Java 2 platform v1.3.

As of Java 2 platform v1.3 this previously undocumented field is no longer used. Key bindings are now defined by the LookAndFeel, please refer to the key bindings specification for further details.

rightKey

@Deprecated
protected KeyStroke rightKey

Deprecated. As of Java 2 platform v1.3.

As of Java 2 platform v1.3 this previously undocumented field is no longer used. Key bindings are now defined by the LookAndFeel, please refer to the key bindings specification for further details.

tabRuns

protected int[] tabRuns

runCount

protected int runCount

selectedRun

protected int selectedRun

rects

protected Rectangle[] rects

maxTabHeight

protected int maxTabHeight

maxTabWidth

protected int maxTabWidth

tabChangeListener

protected ChangeListener tabChangeListener

propertyChangeListener

protected PropertyChangeListener propertyChangeListener

mouseListener

protected MouseListener mouseListener

focusListener

protected FocusListener focusListener

calcRect

protected transient Rectangle calcRect

A rectangle used for general layout calculations in order to avoid constructing many new Rectangles on the fly.

Constructors

BasicTabbedPaneUI

public BasicTabbedPaneUI()

Methods

createUI

public static ComponentUI createUI(JComponent c)

installUI

public void installUI(JComponent c)

Description copied from class: ComponentUI

Configures the specified component appropriately for the look and feel. This method is invoked when the ComponentUI instance is being installed as the UI delegate on the specified component. This method should completely configure the component for the look and feel, including the following:

1. Install default property values for color, fonts, borders, icons, opacity, etc. on the component. Whenever possible, property values initialized by the client program should not be overridden.
2. Install a LayoutManager on the component if necessary.
3. Create/add any required sub-components to the component.
4. Create/install event listeners on the component.
5. Create/install a PropertyChangeListener on the component in order to detect and respond to component property changes appropriately.
6. Install keyboard UI (mnemonics, traversal, etc.) on the component.
7. Initialize any appropriate instance data.

Overrides:

installUI in class ComponentUI

Parameters:

c - the component where this UI delegate is being installed

See Also:

ComponentUI.uninstallUI(javax.swing.JComponent), JComponent.setUI(javax.swing.plaf.ComponentUI), JComponent.updateUI()

uninstallUI

public void uninstallUI(JComponent c)

Description copied from class: ComponentUI

Reverses configuration which was done on the specified component during installUI. This method is invoked when this UIComponent instance is being removed as the UI delegate for the specified component. This method should undo the configuration performed in installUI, being careful to leave the JComponent instance in a clean state (no extraneous listeners, look-and-feel-specific property objects, etc.). This should include the following:

1. Remove any UI-set borders from the component.
2. Remove any UI-set layout managers on the component.
3. Remove any UI-added sub-components from the component.
4. Remove any UI-added event/property listeners from the component.
5. Remove any UI-installed keyboard UI from the component.
6. Nullify any allocated instance data objects to allow for GC.

Overrides:

uninstallUI in class ComponentUI

Parameters:

c - the component from which this UI delegate is being removed; this argument is often ignored, but might be used if the UI object is stateless and shared by multiple components

See Also:

ComponentUI.installUI(javax.swing.JComponent), JComponent.updateUI()

createLayoutManager

protected LayoutManager createLayoutManager()

Invoked by installUI to create a layout manager object to manage the JTabbedPane.

Returns:

a layout manager object

See Also:

BasicTabbedPaneUI.TabbedPaneLayout, JTabbedPane.getTabLayoutPolicy()

installComponents

protected void installComponents()

Creates and installs any required subcomponents for the JTabbedPane. Invoked by installUI.

Since:

1.4

createScrollButton

protected JButton createScrollButton(int direction)

Creates and returns a JButton that will provide the user with a way to scroll the tabs in a particular direction. The returned JButton must be instance of UIResource.

Parameters:

direction - One of the SwingConstants constants: SOUTH, NORTH, EAST or WEST

Returns:

Widget for user to

Throws:

IllegalArgumentException - if direction is not one of NORTH, SOUTH, EAST or WEST

Since:

1.5

See Also:

JTabbedPane.setTabPlacement(int), SwingConstants

uninstallComponents

protected void uninstallComponents()

Removes any installed subcomponents from the JTabbedPane. Invoked by uninstallUI.

Since:

1.4

installDefaults

protected void installDefaults()

uninstallDefaults

protected void uninstallDefaults()

installListeners

protected void installListeners()

uninstallListeners

protected void uninstallListeners()

createMouseListener

protected MouseListener createMouseListener()

createFocusListener

protected FocusListener createFocusListener()

createChangeListener

protected ChangeListener createChangeListener()

createPropertyChangeListener

protected PropertyChangeListener createPropertyChangeListener()

installKeyboardActions

protected void installKeyboardActions()

uninstallKeyboardActions

protected void uninstallKeyboardActions()

setRolloverTab

protected void setRolloverTab(int index)

Sets the tab the mouse is currently over to index. index will be -1 if the mouse is no longer over any tab. No checking is done to ensure the passed in index identifies a valid tab.

Parameters:

index - Index of the tab the mouse is over.

Since:

1.5

getRolloverTab

protected int getRolloverTab()

Returns the tab the mouse is currently over, or -1 if the mouse is no longer over any tab.

Returns:

the tab the mouse is currently over, or -1 if the mouse is no longer over any tab

Since:

1.5

getMinimumSize

public Dimension getMinimumSize(JComponent c)

Description copied from class: ComponentUI

Returns the specified component's minimum size appropriate for the look and feel. If null is returned, the minimum size will be calculated by the component's layout manager instead (this is the preferred approach for any component with a specific layout manager installed). The default implementation of this method invokes getPreferredSize and returns that value.

Overrides:

getMinimumSize in class ComponentUI

Parameters:

c - the component whose minimum size is being queried; this argument is often ignored, but might be used if the UI object is stateless and shared by multiple components

Returns:

a Dimension object or null

See Also:

JComponent.getMinimumSize(), LayoutManager.minimumLayoutSize(java.awt.Container), ComponentUI.getPreferredSize(javax.swing.JComponent)

getMaximumSize

public Dimension getMaximumSize(JComponent c)

Description copied from class: ComponentUI

Returns the specified component's maximum size appropriate for the look and feel. If null is returned, the maximum size will be calculated by the component's layout manager instead (this is the preferred approach for any component with a specific layout manager installed). The default implementation of this method invokes getPreferredSize and returns that value.

Overrides:

getMaximumSize in class ComponentUI

Parameters:

c - the component whose maximum size is being queried; this argument is often ignored, but might be used if the UI object is stateless and shared by multiple components

Returns:

a Dimension object or null

See Also:

JComponent.getMaximumSize(), LayoutManager2.maximumLayoutSize(java.awt.Container)

getBaseline

public int getBaseline(JComponent c,
                       int width,
                       int height)

Returns the baseline.

Overrides:

getBaseline in class ComponentUI

Parameters:

c - JComponent baseline is being requested for

width - the width to get the baseline for

height - the height to get the baseline for

Returns:

baseline or a value < 0 indicating there is no reasonable baseline

Throws:

NullPointerException - if c is null

IllegalArgumentException - if width or height is < 0

Since:

1.6

See Also:

JComponent.getBaseline(int, int)

getBaselineResizeBehavior

public Component.BaselineResizeBehavior getBaselineResizeBehavior(JComponent c)

Returns an enum indicating how the baseline of the component changes as the size changes.

Overrides:

getBaselineResizeBehavior in class ComponentUI

Parameters:

c - JComponent to return baseline resize behavior for

Returns:

an enum indicating how the baseline changes as the component size changes

Throws:

NullPointerException - if c is null

Since:

1.6

See Also:

JComponent.getBaseline(int, int)

getBaseline

protected int getBaseline(int tab)

Returns the baseline for the specified tab.

Parameters:

tab - index of tab to get baseline for

Returns:

baseline or a value < 0 indicating there is no reasonable baseline

Throws:

IndexOutOfBoundsException - if index is out of range (index < 0 || index >= tab count)

Since:

1.6

getBaselineOffset

protected int getBaselineOffset()

Returns the amount the baseline is offset by. This is typically the same as getTabLabelShiftY.

Returns:

amount to offset the baseline by

Since:

1.6

paint

public void paint(Graphics g,
                  JComponent c)

Description copied from class: ComponentUI

Paints the specified component appropriately for the look and feel. This method is invoked from the ComponentUI.update method when the specified component is being painted. Subclasses should override this method and use the specified Graphics object to render the content of the component.

Overrides:

paint in class ComponentUI

Parameters:

g - the Graphics context in which to paint

c - the component being painted; this argument is often ignored, but might be used if the UI object is stateless and shared by multiple components

See Also:

ComponentUI.update(java.awt.Graphics, javax.swing.JComponent)

paintTabArea

protected void paintTabArea(Graphics g,
                            int tabPlacement,
                            int selectedIndex)

Paints the tabs in the tab area. Invoked by paint(). The graphics parameter must be a valid Graphics object. Tab placement may be either: JTabbedPane.TOP, JTabbedPane.BOTTOM, JTabbedPane.LEFT, or JTabbedPane.RIGHT. The selected index must be a valid tabbed pane tab index (0 to tab count - 1, inclusive) or -1 if no tab is currently selected. The handling of invalid parameters is unspecified.

Parameters:

g - the graphics object to use for rendering

tabPlacement - the placement for the tabs within the JTabbedPane

selectedIndex - the tab index of the selected component

Since:

1.4

paintTab

protected void paintTab(Graphics g,
                        int tabPlacement,
                        Rectangle[] rects,
                        int tabIndex,
                        Rectangle iconRect,
                        Rectangle textRect)

layoutLabel

protected void layoutLabel(int tabPlacement,
                           FontMetrics metrics,
                           int tabIndex,
                           String title,
                           Icon icon,
                           Rectangle tabRect,
                           Rectangle iconRect,
                           Rectangle textRect,
                           boolean isSelected)

paintIcon

protected void paintIcon(Graphics g,
                         int tabPlacement,
                         int tabIndex,
                         Icon icon,
                         Rectangle iconRect,
                         boolean isSelected)

paintText

protected void paintText(Graphics g,
                         int tabPlacement,
                         Font font,
                         FontMetrics metrics,
                         int tabIndex,
                         String title,
                         Rectangle textRect,
                         boolean isSelected)

getTabLabelShiftX

protected int getTabLabelShiftX(int tabPlacement,
                                int tabIndex,
                                boolean isSelected)

getTabLabelShiftY

protected int getTabLabelShiftY(int tabPlacement,
                                int tabIndex,
                                boolean isSelected)

paintFocusIndicator

protected void paintFocusIndicator(Graphics g,
                                   int tabPlacement,
                                   Rectangle[] rects,
                                   int tabIndex,
                                   Rectangle iconRect,
                                   Rectangle textRect,
                                   boolean isSelected)

paintTabBorder

protected void paintTabBorder(Graphics g,
                              int tabPlacement,
                              int tabIndex,
                              int x,
                              int y,
                              int w,
                              int h,
                              boolean isSelected)

this function draws the border around each tab note that this function does now draw the background of the tab. that is done elsewhere

paintTabBackground

protected void paintTabBackground(Graphics g,
                                  int tabPlacement,
                                  int tabIndex,
                                  int x,
                                  int y,
                                  int w,
                                  int h,
                                  boolean isSelected)

paintContentBorder

protected void paintContentBorder(Graphics g,
                                  int tabPlacement,
                                  int selectedIndex)

paintContentBorderTopEdge

protected void paintContentBorderTopEdge(Graphics g,
                                         int tabPlacement,
                                         int selectedIndex,
                                         int x,
                                         int y,
                                         int w,
                                         int h)

paintContentBorderLeftEdge

protected void paintContentBorderLeftEdge(Graphics g,
                                          int tabPlacement,
                                          int selectedIndex,
                                          int x,
                                          int y,
                                          int w,
                                          int h)

paintContentBorderBottomEdge

protected void paintContentBorderBottomEdge(Graphics g,
                                            int tabPlacement,
                                            int selectedIndex,
                                            int x,
                                            int y,
                                            int w,
                                            int h)

paintContentBorderRightEdge

protected void paintContentBorderRightEdge(Graphics g,
                                           int tabPlacement,
                                           int selectedIndex,
                                           int x,
                                           int y,
                                           int w,
                                           int h)

getTabBounds

public Rectangle getTabBounds(JTabbedPane pane,
                              int i)

Returns the bounds of the specified tab index. The bounds are with respect to the JTabbedPane's coordinate space.

Specified by:

getTabBounds in class TabbedPaneUI

getTabRunCount

public int getTabRunCount(JTabbedPane pane)

Specified by:

getTabRunCount in class TabbedPaneUI

tabForCoordinate

public int tabForCoordinate(JTabbedPane pane,
                            int x,
                            int y)

Returns the tab index which intersects the specified point in the JTabbedPane's coordinate space.

Specified by:

tabForCoordinate in class TabbedPaneUI

getTabBounds

protected Rectangle getTabBounds(int tabIndex,
                                 Rectangle dest)

Returns the bounds of the specified tab in the coordinate space of the JTabbedPane component. This is required because the tab rects are by default defined in the coordinate space of the component where they are rendered, which could be the JTabbedPane (for WRAP_TAB_LAYOUT) or a ScrollableTabPanel (SCROLL_TAB_LAYOUT). This method should be used whenever the tab rectangle must be relative to the JTabbedPane itself and the result should be placed in a designated Rectangle object (rather than instantiating and returning a new Rectangle each time). The tab index parameter must be a valid tabbed pane tab index (0 to tab count - 1, inclusive). The destination rectangle parameter must be a valid Rectangle instance. The handling of invalid parameters is unspecified.

Parameters:

tabIndex - the index of the tab

dest - the rectangle where the result should be placed

Returns:

the resulting rectangle

Since:

1.4

getVisibleComponent

protected Component getVisibleComponent()

setVisibleComponent

protected void setVisibleComponent(Component component)

assureRectsCreated

protected void assureRectsCreated(int tabCount)

expandTabRunsArray

protected void expandTabRunsArray()

getRunForTab

protected int getRunForTab(int tabCount,
                           int tabIndex)

lastTabInRun

protected int lastTabInRun(int tabCount,
                           int run)

getTabRunOverlay

protected int getTabRunOverlay(int tabPlacement)

getTabRunIndent

protected int getTabRunIndent(int tabPlacement,
                              int run)

shouldPadTabRun

protected boolean shouldPadTabRun(int tabPlacement,
                                  int run)

shouldRotateTabRuns

protected boolean shouldRotateTabRuns(int tabPlacement)

getIconForTab

protected Icon getIconForTab(int tabIndex)

getTextViewForTab

protected View getTextViewForTab(int tabIndex)

Returns the text View object required to render stylized text (HTML) for the specified tab or null if no specialized text rendering is needed for this tab. This is provided to support html rendering inside tabs.

Parameters:

tabIndex - the index of the tab

Returns:

the text view to render the tab's text or null if no specialized rendering is required

Since:

1.4

calculateTabHeight

protected int calculateTabHeight(int tabPlacement,
                                 int tabIndex,
                                 int fontHeight)

calculateMaxTabHeight

protected int calculateMaxTabHeight(int tabPlacement)

calculateTabWidth

protected int calculateTabWidth(int tabPlacement,
                                int tabIndex,
                                FontMetrics metrics)

calculateMaxTabWidth

protected int calculateMaxTabWidth(int tabPlacement)

calculateTabAreaHeight

protected int calculateTabAreaHeight(int tabPlacement,
                                     int horizRunCount,
                                     int maxTabHeight)

calculateTabAreaWidth

protected int calculateTabAreaWidth(int tabPlacement,
                                    int vertRunCount,
                                    int maxTabWidth)

getTabInsets

protected Insets getTabInsets(int tabPlacement,
                              int tabIndex)

getSelectedTabPadInsets

protected Insets getSelectedTabPadInsets(int tabPlacement)

getTabAreaInsets

protected Insets getTabAreaInsets(int tabPlacement)

getContentBorderInsets

protected Insets getContentBorderInsets(int tabPlacement)

getFontMetrics

protected FontMetrics getFontMetrics()

navigateSelectedTab

protected void navigateSelectedTab(int direction)

selectNextTabInRun

protected void selectNextTabInRun(int current)

selectPreviousTabInRun

protected void selectPreviousTabInRun(int current)

selectNextTab

protected void selectNextTab(int current)

selectPreviousTab

protected void selectPreviousTab(int current)

selectAdjacentRunTab

protected void selectAdjacentRunTab(int tabPlacement,
                                    int tabIndex,
                                    int offset)

getFocusIndex

protected int getFocusIndex()

Returns the index of the tab that has focus.

Returns:

index of tab that has focus

Since:

1.5

getTabRunOffset

protected int getTabRunOffset(int tabPlacement,
                              int tabCount,
                              int tabIndex,
                              boolean forward)

getPreviousTabIndex

protected int getPreviousTabIndex(int base)

getNextTabIndex

protected int getNextTabIndex(int base)

getNextTabIndexInRun

protected int getNextTabIndexInRun(int tabCount,
                                   int base)

getPreviousTabIndexInRun

protected int getPreviousTabIndexInRun(int tabCount,
                                       int base)

getPreviousTabRun

protected int getPreviousTabRun(int baseRun)

getNextTabRun

protected int getNextTabRun(int baseRun)

rotateInsets

protected static void rotateInsets(Insets topInsets,
                                   Insets targetInsets,
                                   int targetPlacement)