FlatTabbedPaneUI.FlatTabbedPaneLayout (flatlaf-core 3.4.1)

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

All Methods Instance Methods Concrete Methods
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 javax.swing.plaf.basic.BasicTabbedPaneUI.TabbedPaneLayout
addLayoutComponent, calculateLayoutInfo, calculateTabRects, minimumLayoutSize, normalizeTabRuns, padSelectedTab, padTabRun, preferredLayoutSize, preferredTabAreaHeight, preferredTabAreaWidth, removeLayoutComponent, rotateTabRuns

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - FlatTabbedPaneLayout
```
protected FlatTabbedPaneLayout()
```
- Method Detail
  - 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