Class FlatTabbedPaneUI.FlatTabbedPaneLayout

java.lang.Object

javax.swing.plaf.basic.BasicTabbedPaneUI.TabbedPaneLayout

com.formdev.flatlaf.ui.FlatTabbedPaneUI.FlatTabbedPaneLayout

All Implemented Interfaces:

LayoutManager

Direct Known Subclasses:

FlatTabbedPaneUI.FlatTabbedPaneScrollLayout

Enclosing class:

FlatTabbedPaneUI

protected class FlatTabbedPaneUI.FlatTabbedPaneLayout
extends BasicTabbedPaneUI.TabbedPaneLayout

Layout manager for wrap tab layout policy (and base class for scroll tab layout policy).

Component hierarchy for wrap tab layout policy:

JTabbedPane
   +- 1...n tab content components
   +- (optional) BasicTabbedPaneUI.TabContainer (extends JPanel)
   |  +- 1..n tab components (shown in tab area)
   +- (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.

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	FlatTabbedPaneLayout()

Method Summary

Modifier and Type	Method	Description
protected Dimension	calculateSize(boolean minimum)
protected Dimension	calculateTabAreaSize()	Calculate preferred size of the tab area.
protected boolean	isContentEmpty()	Check whether all content components are either null or have zero preferred size.
protected void	layoutChildComponent(Component c, Rectangle contentAreaBounds)
protected void	layoutChildComponents()
void	layoutContainer(Container parent)
protected void	layoutContainerImpl()

Methods inherited from class BasicTabbedPaneUI.TabbedPaneLayout

addLayoutComponent, calculateLayoutInfo, calculateTabRects, minimumLayoutSize, normalizeTabRuns, padSelectedTab, padTabRun, preferredLayoutSize, preferredTabAreaHeight, preferredTabAreaWidth, removeLayoutComponent, rotateTabRuns

Methods inherited from class Object

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

Constructor Details

FlatTabbedPaneLayout

protected FlatTabbedPaneLayout()

Method Details

calculateSize

protected Dimension calculateSize(boolean minimum)

Overrides:

calculateSize in class BasicTabbedPaneUI.TabbedPaneLayout

isContentEmpty

protected boolean isContentEmpty()

Check whether all content components are either null or have zero preferred size.

If true, assume that the tabbed pane is used without any content and use the size of the tab area (single run) as minimum/preferred size.

calculateTabAreaSize

protected Dimension calculateTabAreaSize()

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

layoutContainer

public void layoutContainer(Container parent)

Specified by:

layoutContainer in interface LayoutManager

Overrides:

layoutContainer in class BasicTabbedPaneUI.TabbedPaneLayout

layoutContainerImpl

protected void layoutContainerImpl()

Since:

3.3

layoutChildComponents

protected void layoutChildComponents()

Since:

3.3

layoutChildComponent

protected void layoutChildComponent(Component c,
 Rectangle contentAreaBounds)

Since:

3.3