Package com.formdev.flatlaf.ui

Class FlatTabbedPaneUI.FlatTabbedPaneScrollLayout

java.lang.Object

javax.swing.plaf.basic.BasicTabbedPaneUI.TabbedPaneLayout

com.formdev.flatlaf.ui.FlatTabbedPaneUI.FlatTabbedPaneLayout

com.formdev.flatlaf.ui.FlatTabbedPaneUI.FlatTabbedPaneScrollLayout

All Implemented Interfaces:

java.awt.LayoutManager

Enclosing class:

FlatTabbedPaneUI

protected class FlatTabbedPaneUI.FlatTabbedPaneScrollLayout
extends FlatTabbedPaneUI.FlatTabbedPaneLayout
implements java.awt.LayoutManager

Layout manager used for scroll tab layout policy.

Component hierarchy for scroll tab layout policy:

 JTabbedPane
    +- 1...n tab content components
    +- BasicTabbedPaneUI.ScrollableTabViewport (extends JViewport)
    |  +- BasicTabbedPaneUI.ScrollableTabPanel (extends JPanel)
    |     +- (optional) BasicTabbedPaneUI.TabContainer (extends JPanel)
    |        +- 1..n tab components (shown in tab area)
    +- FlatScrollableTabButton (scroll forward)
    +- FlatScrollableTabButton (scroll backward)
    +- FlatMoreTabsButton
    +- (optional) ContainerUIResource (extends JPanel)
    |  +- leading component
    +- (optional) ContainerUIResource (extends JPanel)
       +- trailing component
 

Instead of using super.layoutContainer(Container) and fixing some component bounds, this class implements layoutContainer(Container) and moves/resizes components only once. This avoids that some components are moved/resized twice, which would unnecessary repaint and relayout tabbed pane. In some special case this resulted in "endless" layouting and repainting when using nested tabbed panes (top and bottom tab placement) and RSyntaxTextArea (with enabled line-wrapping) as tab content.

Although this class delegates nearly all methods to the original layout manager BasicTabbedPaneUI.TabbedPaneScrollLayout, which extends BasicTabbedPaneUI.TabbedPaneLayout, it is necessary that this class also extends BasicTabbedPaneUI.TabbedPaneLayout to avoid a ClassCastException in BasicTabbedPaneUI.ensureCurrentLayout().

Field Summary

Fields

Modifier and Type	Field	Description
private javax.swing.plaf.basic.BasicTabbedPaneUI.TabbedPaneLayout	delegate

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	FlatTabbedPaneScrollLayout(javax.swing.plaf.basic.BasicTabbedPaneUI.TabbedPaneLayout delegate)

Method Summary

Modifier and Type	Method	Description
void	addLayoutComponent(java.lang.String name, java.awt.Component comp)
void	calculateLayoutInfo()
protected java.awt.Dimension	calculateTabAreaSize()	Calculate preferred size of the tab area.
protected void	layoutChildComponent(java.awt.Component c, java.awt.Rectangle contentAreaBounds)
protected void	layoutContainerImpl()
java.awt.Dimension	minimumLayoutSize(java.awt.Container parent)
java.awt.Dimension	preferredLayoutSize(java.awt.Container parent)
void	removeLayoutComponent(java.awt.Component comp)

Methods inherited from class com.formdev.flatlaf.ui.FlatTabbedPaneUI.FlatTabbedPaneLayout

calculateSize, getContentAreaLayoutBounds, getTabAreaLayoutBounds, isContentEmpty, isTabContainer, layoutChildComponents, layoutContainer, layoutLeftAndRightComponents, layoutTabComponents, layoutTopAndBottomComponents

Methods inherited from class javax.swing.plaf.basic.BasicTabbedPaneUI.TabbedPaneLayout

calculateTabRects, normalizeTabRuns, padSelectedTab, padTabRun, preferredTabAreaHeight, preferredTabAreaWidth, rotateTabRuns

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface java.awt.LayoutManager

layoutContainer

Field Detail

delegate

private final javax.swing.plaf.basic.BasicTabbedPaneUI.TabbedPaneLayout delegate

Constructor Detail

FlatTabbedPaneScrollLayout

protected FlatTabbedPaneScrollLayout(javax.swing.plaf.basic.BasicTabbedPaneUI.TabbedPaneLayout delegate)

Method Detail

calculateLayoutInfo

public void calculateLayoutInfo()

Overrides:

calculateLayoutInfo in class javax.swing.plaf.basic.BasicTabbedPaneUI.TabbedPaneLayout

calculateTabAreaSize

protected java.awt.Dimension calculateTabAreaSize()

Description copied from class: FlatTabbedPaneUI.FlatTabbedPaneLayout

Calculate preferred size of the tab area. Used only if FlatTabbedPaneUI.FlatTabbedPaneLayout.isContentEmpty() returns true.

Overrides:

calculateTabAreaSize in class FlatTabbedPaneUI.FlatTabbedPaneLayout

preferredLayoutSize

public java.awt.Dimension preferredLayoutSize(java.awt.Container parent)

Specified by:

preferredLayoutSize in interface java.awt.LayoutManager

Overrides:

preferredLayoutSize in class javax.swing.plaf.basic.BasicTabbedPaneUI.TabbedPaneLayout

minimumLayoutSize

public java.awt.Dimension minimumLayoutSize(java.awt.Container parent)

Specified by:

minimumLayoutSize in interface java.awt.LayoutManager

Overrides:

minimumLayoutSize in class javax.swing.plaf.basic.BasicTabbedPaneUI.TabbedPaneLayout

addLayoutComponent

public void addLayoutComponent(java.lang.String name,
                               java.awt.Component comp)

Specified by:

addLayoutComponent in interface java.awt.LayoutManager

Overrides:

addLayoutComponent in class javax.swing.plaf.basic.BasicTabbedPaneUI.TabbedPaneLayout

removeLayoutComponent

public void removeLayoutComponent(java.awt.Component comp)

Specified by:

removeLayoutComponent in interface java.awt.LayoutManager

Overrides:

removeLayoutComponent in class javax.swing.plaf.basic.BasicTabbedPaneUI.TabbedPaneLayout

layoutContainerImpl

protected void layoutContainerImpl()

Overrides:

layoutContainerImpl in class FlatTabbedPaneUI.FlatTabbedPaneLayout

Since:

3.3

layoutChildComponent

protected void layoutChildComponent(java.awt.Component c,
                                    java.awt.Rectangle contentAreaBounds)

Overrides:

layoutChildComponent in class FlatTabbedPaneUI.FlatTabbedPaneLayout

Since:

3.3