```
public interface FlatClientProperties
```
Defines/documents own client properties used in FlatLaf.

Field Summary

Fields
Modifier and Type	Field	Description
`static String`	`BUTTON_TYPE`	Specifies type of button.
`static String`	`BUTTON_TYPE_BORDERLESS`	Paint the button without a border in the unfocused state.
`static String`	`BUTTON_TYPE_HELP`	Paint a help button (circle with question mark).
`static String`	`BUTTON_TYPE_ROUND_RECT`	Paint the button with round edges.
`static String`	`BUTTON_TYPE_SQUARE`	Paint the button with square edges.
`static String`	`BUTTON_TYPE_TAB`	Paint the toggle button in tab style.
`static String`	`BUTTON_TYPE_TOOLBAR_BUTTON`	Paint the button in toolbar style.
`static String`	`COMPONENT_FOCUS_OWNER`	Specifies a callback that is invoked to check whether a component is permanent focus owner.
`static String`	`COMPONENT_ROUND_RECT`	Paint the component with round edges.
`static String`	`COMPONENT_TITLE_BAR_CAPTION`	Specifies whether a component shown in a window title bar area should behave as caption (left-click allows moving window, right-click shows window system menu).
`static String`	`FULL_WINDOW_CONTENT`	Specifies whether the content pane (and the glass pane) should be extended into the window title bar area (requires enabled window decorations).
`static String`	`FULL_WINDOW_CONTENT_BUTTONS_BOUNDS`	Contains the current bounds of the iconfify/maximize/close buttons (in root pane coordinates) if fullWindowContent mode is enabled.
`static String`	`FULL_WINDOW_CONTENT_BUTTONS_PLACEHOLDER`	Marks the panel as placeholder for the iconfify/maximize/close buttons in fullWindowContent mode.
`static String`	`GLASS_PANE_FULL_HEIGHT`	Specifies whether the glass pane should have full height and overlap the title bar, if FlatLaf window decorations are enabled.
`static String`	`MACOS_WINDOW_BUTTONS_SPACING`	Specifies the spacing around the macOS window close/minimize/zoom buttons.
`static String`	`MACOS_WINDOW_BUTTONS_SPACING_LARGE`	Add large spacing around the macOS window close/minimize/zoom buttons.
`static String`	`MACOS_WINDOW_BUTTONS_SPACING_MEDIUM`	Add medium spacing around the macOS window close/minimize/zoom buttons.
`static String`	`MENU_BAR_EMBEDDED`	Specifies whether the menu bar is embedded into the window title pane if window decorations are enabled.
`static String`	`MINIMUM_HEIGHT`	Specifies minimum height of a component.
`static String`	`MINIMUM_WIDTH`	Specifies minimum width of a component.
`static String`	`OUTLINE`	Specifies the outline color of the component border.
`static String`	`OUTLINE_ERROR`	Paint the component border in another color (usually reddish) to indicate an error.
`static String`	`OUTLINE_WARNING`	Paint the component border in another color (usually yellowish) to indicate a warning.
`static String`	`PLACEHOLDER_TEXT`	Placeholder text that is only painted if the text field is empty.
`static String`	`POPUP_BORDER_CORNER_RADIUS`	Specifies the popup border corner radius if the component is shown in a popup or if the component is the owner of another component that is shown in a popup.
`static String`	`POPUP_DROP_SHADOW_PAINTED`	Specifies whether a drop shadow is painted if the component is shown in a popup or if the component is the owner of another component that is shown in a popup.
`static String`	`POPUP_FORCE_HEAVY_WEIGHT`	Specifies whether a heavy weight window should be used if the component is shown in a popup or if the component is the owner of another component that is shown in a popup.
`static String`	`POPUP_ROUNDED_BORDER_WIDTH`	Specifies the popup rounded border width if the component is shown in a popup or if the component is the owner of another component that is shown in a popup.
`static String`	`PROGRESS_BAR_LARGE_HEIGHT`	Specifies whether the progress bar has always the larger height even if no string is painted.
`static String`	`PROGRESS_BAR_SQUARE`	Specifies whether the progress bar is paint with square edges.
`static String`	`SCROLL_BAR_SHOW_BUTTONS`	Specifies whether the decrease/increase arrow buttons of a scrollbar are shown.
`static String`	`SCROLL_PANE_SMOOTH_SCROLLING`	Specifies whether the scroll pane uses smooth scrolling.
`static String`	`SELECT_ALL_ON_FOCUS_POLICY`	Specifies whether all text is selected when the text component gains focus.
`static String`	`SELECT_ALL_ON_FOCUS_POLICY_ALWAYS`	Always select all text when the text component gains focus.
`static String`	`SELECT_ALL_ON_FOCUS_POLICY_NEVER`	Never select all text when the text component gains focus.
`static String`	`SELECT_ALL_ON_FOCUS_POLICY_ONCE`	Select all text when the text component gains focus for the first time and selection was not modified (is at end of text).
`static String`	`SELECTED_STATE`	Specifies selected state of a checkbox.
`static String`	`SELECTED_STATE_INDETERMINATE`	Paint an indeterminate state on a checkbox.
`static String`	`SPLIT_PANE_EXPANDABLE_SIDE`	Specifies what side of the spilt pane is allowed to expand via one-touch expanding arrow buttons.
`static String`	`SPLIT_PANE_EXPANDABLE_SIDE_LEFT`	Allow expanding only left/top side of the split pane.
`static String`	`SPLIT_PANE_EXPANDABLE_SIDE_RIGHT`	Allow expanding only right/bottom side of the split pane.
`static String`	`SQUARE_SIZE`	Specifies whether the button preferred size will be made square (quadratically).
`static String`	`STYLE`	Specifies the style of a component as String in CSS syntax ("key1: value1; key2: value2; ...") or as `Map`<String, Object> with binary values.
`static String`	`STYLE_CLASS`	Specifies the style class(es) of a component as String (single class or multiple classes separated by space characters) or as `String[]` or `List`<String> (multiple classes).
`static String`	`TAB_BUTTON_SELECTED_BACKGROUND`	Background color if selected and toggle button type is `BUTTON_TYPE_TAB`.
`static String`	`TAB_BUTTON_UNDERLINE_COLOR`	Color of underline if toggle button type is `BUTTON_TYPE_TAB`.
`static String`	`TAB_BUTTON_UNDERLINE_HEIGHT`	Thickness of underline if toggle button type is `BUTTON_TYPE_TAB`.
`static String`	`TAB_BUTTON_UNDERLINE_PLACEMENT`	Placement of underline if toggle button type is `BUTTON_TYPE_TAB`
`static String`	`TABBED_PANE_ALIGN_CENTER`	Align to center.
`static String`	`TABBED_PANE_ALIGN_FILL`	Stretch to fill all available space.
`static String`	`TABBED_PANE_ALIGN_LEADING`	Align to the leading edge.
`static String`	`TABBED_PANE_ALIGN_TRAILING`	Align to the trailing edge.
`static String`	`TABBED_PANE_HAS_FULL_BORDER`	Specifies whether a full border is painted around a tabbed pane.
`static String`	`TABBED_PANE_HIDE_TAB_AREA_WITH_ONE_TAB`	Specifies whether the tab area should be hidden if it contains only one tab.
`static String`	`TABBED_PANE_LEADING_COMPONENT`	Specifies a component that will be placed at the leading edge of the tabs area.
`static String`	`TABBED_PANE_MAXIMUM_TAB_WIDTH`	Specifies the maximum width of a tab.
`static String`	`TABBED_PANE_MINIMUM_TAB_WIDTH`	Specifies the minimum width of a tab.
`static String`	`TABBED_PANE_PLACEMENT_BOTH`	The forward/backward scroll arrow buttons are placed on both sides of the tab area.
`static String`	`TABBED_PANE_PLACEMENT_TRAILING`	The forward/backward scroll arrow buttons are placed on the trailing side of the tab area.
`static String`	`TABBED_PANE_POLICY_AS_NEEDED`	Display only when needed.
`static String`	`TABBED_PANE_POLICY_AS_NEEDED_SINGLE`	Display single button only when needed.
`static String`	`TABBED_PANE_POLICY_NEVER`	Display never.
`static String`	`TABBED_PANE_SCROLL_BUTTONS_PLACEMENT`	Specifies the placement of the forward/backward scroll arrow buttons.
`static String`	`TABBED_PANE_SCROLL_BUTTONS_POLICY`	Specifies the display policy for the forward/backward scroll arrow buttons.
`static String`	`TABBED_PANE_SHOW_CONTENT_SEPARATOR`	Specifies whether the separator between tabs area and content area should be shown.
`static String`	`TABBED_PANE_SHOW_TAB_SEPARATORS`	Specifies whether separators are shown between tabs.
`static String`	`TABBED_PANE_TAB_ALIGNMENT`	Specifies the horizontal alignment of the tab title and icon.
`static String`	`TABBED_PANE_TAB_AREA_ALIGNMENT`	Specifies the alignment of the tab area.
`static String`	`TABBED_PANE_TAB_AREA_INSETS`	Specifies the insets of the tab area.
`static String`	`TABBED_PANE_TAB_CLOSABLE`	Specifies whether tabs are closable.
`static String`	`TABBED_PANE_TAB_CLOSE_CALLBACK`	Specifies the callback that is invoked when a tab close button is clicked.
`static String`	`TABBED_PANE_TAB_CLOSE_TOOLTIPTEXT`	Specifies the tooltip text used for tab close buttons.
`static String`	`TABBED_PANE_TAB_HEIGHT`	Specifies the minimum height of a tab.
`static String`	`TABBED_PANE_TAB_ICON_PLACEMENT`	Specifies the tab icon placement (relative to tab title).
`static String`	`TABBED_PANE_TAB_INSETS`	Specifies the insets of a tab.
`static String`	`TABBED_PANE_TAB_ROTATION`	Specifies the rotation of the tabs (title, icon, etc.).
`static String`	`TABBED_PANE_TAB_ROTATION_AUTO`	Tabs are rotated depending on tab placement.
`static String`	`TABBED_PANE_TAB_ROTATION_LEFT`	Tabs are rotated counter-clockwise.
`static String`	`TABBED_PANE_TAB_ROTATION_NONE`	Tabs are not rotated.
`static String`	`TABBED_PANE_TAB_ROTATION_RIGHT`	Tabs are rotated clockwise.
`static String`	`TABBED_PANE_TAB_TYPE`	Specifies type of the selected tab.
`static String`	`TABBED_PANE_TAB_TYPE_CARD`	Paint the selected tab as card.
`static String`	`TABBED_PANE_TAB_TYPE_UNDERLINED`	Paint the selected tab underlined.
`static String`	`TABBED_PANE_TAB_WIDTH_MODE`	Specifies how the tabs should be sized.
`static String`	`TABBED_PANE_TAB_WIDTH_MODE_COMPACT`	Unselected tabs are smaller because they show only the tab icon, but no tab title.
`static String`	`TABBED_PANE_TAB_WIDTH_MODE_EQUAL`	All tabs in a tabbed pane has same width.
`static String`	`TABBED_PANE_TAB_WIDTH_MODE_PREFERRED`	Tab width is adjusted to tab icon and title.
`static String`	`TABBED_PANE_TABS_POPUP_POLICY`	Specifies the display policy for the "more tabs" button, which shows a popup menu with the (partly) hidden tabs.
`static String`	`TABBED_PANE_TRAILING_COMPONENT`	Specifies a component that will be placed at the trailing edge of the tabs area.
`static String`	`TEXT_FIELD_CLEAR_CALLBACK`	Specifies the callback that is invoked when a "clear" (or "cancel") button is clicked.
`static String`	`TEXT_FIELD_LEADING_COMPONENT`	Specifies a component that will be placed at the leading edge of the text field.
`static String`	`TEXT_FIELD_LEADING_ICON`	Specifies an icon that will be placed at the leading edge of the text field.
`static String`	`TEXT_FIELD_PADDING`	Specifies the padding of the text.
`static String`	`TEXT_FIELD_SHOW_CLEAR_BUTTON`	Specifies whether a "clear" (or "cancel") button is shown on the trailing side if the text field is not empty, editable and enabled.
`static String`	`TEXT_FIELD_TRAILING_COMPONENT`	Specifies a component that will be placed at the trailing edge of the text field.
`static String`	`TEXT_FIELD_TRAILING_ICON`	Specifies an icon that will be placed at the trailing edge of the text field.
`static String`	`TITLE_BAR_BACKGROUND`	Background color of window title bar (requires enabled window decorations).
`static String`	`TITLE_BAR_FOREGROUND`	Foreground color of window title bar (requires enabled window decorations).
`static String`	`TITLE_BAR_SHOW_CLOSE`	Specifies whether the "close" button should be shown in the window title bar (requires enabled window decorations).
`static String`	`TITLE_BAR_SHOW_ICON`	Specifies whether the window icon should be shown in the window title bar (requires enabled window decorations).
`static String`	`TITLE_BAR_SHOW_ICONIFFY`	Specifies whether the "iconify" button should be shown in the window title bar (requires enabled window decorations).
`static String`	`TITLE_BAR_SHOW_MAXIMIZE`	Specifies whether the "maximize/restore" button should be shown in the window title bar (requires enabled window decorations).
`static String`	`TITLE_BAR_SHOW_TITLE`	Specifies whether the window title should be shown in the window title bar (requires enabled window decorations).
`static String`	`TREE_PAINT_SELECTION`	Specifies whether tree item selection is painted.
`static String`	`TREE_WIDE_SELECTION`	Override if a tree shows a wide selection.
`static String`	`USE_WINDOW_DECORATIONS`	Specifies whether FlatLaf native window decorations should be used for `JFrame` or `JDialog`.
`static String`	`WINDOW_STYLE`	Specifies the style of the window title bar.
`static String`	`WINDOW_STYLE_SMALL`	The window has Utility-style title bar, which is smaller than default title bar.

Method Summary

Static Methods
Modifier and Type	Method	Description
`static <T> T`	`clientProperty(JComponent c, String key, T defaultValue, Class<T> type)`	Returns the value of the specified client property if it is an instance of the specified type.
`static boolean`	`clientPropertyBoolean(JComponent c, String key, boolean defaultValue)`	Checks whether a client property of a component is a boolean and returns its value.
`static Boolean`	`clientPropertyBooleanStrict(JComponent c, String key, Boolean defaultValue)`	Checks whether a client property of a component is a `Boolean` and returns its value.
`static Color`	`clientPropertyColor(JComponent c, String key, Color defaultValue)`	Checks whether a client property of a component is a color and returns its value.
`static boolean`	`clientPropertyEquals(JComponent c, String key, Object value)`	Checks whether a client property of a component has the given value.
`static int`	`clientPropertyInt(JComponent c, String key, int defaultValue)`	Checks whether a client property of a component is an integer and returns its value.

- Field Detail
  - BUTTON_TYPE
```
static final String BUTTON_TYPE
```
    Specifies type of button.
    Components JButton and JToggleButton
    Value type String
    Allowed Values BUTTON_TYPE_SQUARE, BUTTON_TYPE_ROUND_RECT, BUTTON_TYPE_TAB, BUTTON_TYPE_HELP, BUTTON_TYPE_TOOLBAR_BUTTON or BUTTON_TYPE_BORDERLESS
    
    See Also:
    
    Constant Field Values
  - BUTTON_TYPE_SQUARE
```
static final String BUTTON_TYPE_SQUARE
```
    Paint the button with square edges.
    Components JButton and JToggleButton
    
    See Also:
    
    BUTTON_TYPE, Constant Field Values
  - BUTTON_TYPE_ROUND_RECT
```
static final String BUTTON_TYPE_ROUND_RECT
```
    Paint the button with round edges.
    Components JButton and JToggleButton
    
    See Also:
    
    BUTTON_TYPE, Constant Field Values
  - BUTTON_TYPE_TAB
```
static final String BUTTON_TYPE_TAB
```
    Paint the toggle button in tab style.
    Components JToggleButton
    
    See Also:
    
    BUTTON_TYPE, Constant Field Values
  - BUTTON_TYPE_HELP
```
static final String BUTTON_TYPE_HELP
```
    Paint a help button (circle with question mark).
    Components JButton
    
    See Also:
    
    BUTTON_TYPE, Constant Field Values
  - BUTTON_TYPE_TOOLBAR_BUTTON
```
static final String BUTTON_TYPE_TOOLBAR_BUTTON
```
    Paint the button in toolbar style.
    Components JButton and JToggleButton
    
    See Also:
    
    BUTTON_TYPE, Constant Field Values
  - BUTTON_TYPE_BORDERLESS
```
static final String BUTTON_TYPE_BORDERLESS
```
    Paint the button without a border in the unfocused state.
    Components JButton and JToggleButton
    
    Since:
    
    1.2
    
    See Also:
    
    BUTTON_TYPE, Constant Field Values
  - SQUARE_SIZE
```
static final String SQUARE_SIZE
```
    Specifies whether the button preferred size will be made square (quadratically).
    Components JButton and JToggleButton
    Value type Boolean
    
    See Also:
    
    Constant Field Values
  - SELECTED_STATE
```
static final String SELECTED_STATE
```
    Specifies selected state of a checkbox.
    Component JCheckBox
    Value type String
    Allowed Values SELECTED_STATE_INDETERMINATE
    
    See Also:
    
    Constant Field Values
  - SELECTED_STATE_INDETERMINATE
```
static final String SELECTED_STATE_INDETERMINATE
```
    Paint an indeterminate state on a checkbox.
    
    See Also:
    
    SELECTED_STATE, Constant Field Values
  - STYLE
```
static final String STYLE
```
    Specifies the style of a component as String in CSS syntax ("key1: value1; key2: value2; ...") or as Map<String, Object> with binary values.
    The keys are the same as used in UI defaults, but without component type prefix. E.g. for UI default Slider.thumbSize use key thumbSize.
    The syntax of the CSS values is the same as used in FlatLaf properties files (https://www.formdev.com/flatlaf/properties-files/), but some features are not supported (e.g. variables). When using a map, the values are not parsed from a string. They must be binary.
    Components JComponent
    Value type String or Map<String, Object>
    
    Since:
    
    2
    
    See Also:
    
    Constant Field Values
  - STYLE_CLASS
```
static final String STYLE_CLASS
```
    Specifies the style class(es) of a component as String (single class or multiple classes separated by space characters) or as String[] or List<String> (multiple classes).
    The style rules must be defined in UI defaults either as strings (in CSS syntax) or as Map<String, Object> (with binary values). The key must be in syntax: [style]type.styleClass, where the type is optional. E.g. in FlatLaf properties file:
    [style]Button.primary = borderColor: #08f; background: #08f; foreground: #fff [style].secondary = borderColor: #0f8; background: #0f8
    or in Java code:
    UIManager.put( "[style]Button.primary", "borderColor: #08f; background: #08f; foreground: #fff" ); UIManager.put( "[style].secondary", "borderColor: #0f8; background: #0f8" );
    The rule "Button.primary" can be applied to buttons only. The rule ".secondary" can be applied to any component.
    To have similar behavior as in CSS, first the rule without type is applied, then the rule with type. E.g. setting style class to "foo" on a JButton uses rules from UI default keys "[style].foo" and "[style]Button.foo".
    Components JComponent
    Value type String, String[] or List<String>
    Since:
    
    2
    
    See Also:
    
    Constant Field Values
  - MINIMUM_WIDTH
```
static final String MINIMUM_WIDTH
```
    Specifies minimum width of a component.
    Component JButton, JToggleButton, JComboBox, JSpinner and JTextComponent
    Value type Integer
    
    See Also:
    
    Constant Field Values
  - MINIMUM_HEIGHT
```
static final String MINIMUM_HEIGHT
```
    Specifies minimum height of a component.
    Component JButton and JToggleButton
    Value type Integer
    
    See Also:
    
    Constant Field Values
  - COMPONENT_ROUND_RECT
```
static final String COMPONENT_ROUND_RECT
```
    Paint the component with round edges.
    Components JComboBox, JSpinner, JTextField, JFormattedTextField and JPasswordField
    Value type Boolean
    
    See Also:
    
    Constant Field Values
  - OUTLINE
```
static final String OUTLINE
```
    Specifies the outline color of the component border.
    Components JButton, JComboBox, JFormattedTextField, JPasswordField, JScrollPane, JSpinner, JTextField and JToggleButton
    Value type String or Color or Color[2]
    Allowed Values OUTLINE_ERROR, OUTLINE_WARNING, any color (type Color) or an array of two colors (type Color[2]) where the first color is for focused state and the second for unfocused state
    
    See Also:
    
    Constant Field Values
  - OUTLINE_ERROR
```
static final String OUTLINE_ERROR
```
    Paint the component border in another color (usually reddish) to indicate an error.
    
    See Also:
    
    OUTLINE, Constant Field Values
  - OUTLINE_WARNING
```
static final String OUTLINE_WARNING
```
    Paint the component border in another color (usually yellowish) to indicate a warning.
    
    See Also:
    
    OUTLINE, Constant Field Values
  - COMPONENT_FOCUS_OWNER
```
static final String COMPONENT_FOCUS_OWNER
```
    Specifies a callback that is invoked to check whether a component is permanent focus owner. Used to paint focus indicators.
    May be useful in special cases for custom components.
    Use a Predicate that receives the component as parameter:
    myComponent.putClientProperty( "JComponent.focusOwner", (Predicate<JComponent>) c -> { return ...; // check here } );
    
    Component JComponent
    Value type Predicate<javax.swing.JComponent>
    See Also:
    
    Constant Field Values
  - COMPONENT_TITLE_BAR_CAPTION
```
static final String COMPONENT_TITLE_BAR_CAPTION
```
    Specifies whether a component shown in a window title bar area should behave as caption (left-click allows moving window, right-click shows window system menu). The caption component does not receive mouse pressed/released/clicked/dragged events, but it gets mouse entered/exited/moved events.
    Since 3.4, this client property also supports using a function that can check whether a given location in the component should behave as caption. Useful for components that do not use mouse input on whole component bounds.
    myComponent.putClientProperty( "JComponent.titleBarCaption", (Function<Point, Boolean>) pt -> { // parameter pt contains mouse location (in myComponent coordinates) // return true if the component is not interested in mouse input at the given location // return false if the component wants process mouse input at the given location // return null if the component children should be checked return ...; // check here } );
    Warning:
    
    This function is invoked often when mouse is moved over window title bar area and should therefore return quickly.
    This function is invoked on 'AWT-Windows' thread (not 'AWT-EventQueue' thread) while processing Windows messages. It must not change any component property or layout because this could cause a dead lock.
    
    Component JComponent
    Value type Boolean or Function<Point, Boolean>
    Since:
    
    2.5
    
    See Also:
    
    Constant Field Values
  - FULL_WINDOW_CONTENT_BUTTONS_PLACEHOLDER
```
static final String FULL_WINDOW_CONTENT_BUTTONS_PLACEHOLDER
```
    Marks the panel as placeholder for the iconfify/maximize/close buttons in fullWindowContent mode. See FULL_WINDOW_CONTENT.
    If fullWindowContent mode is enabled, the preferred size of the panel is equal to the size of the iconfify/maximize/close buttons. Otherwise is is 0,0.
    You're responsible to layout that panel at the top-left or top-right corner, depending on platform, where the iconfify/maximize/close buttons are located.
    Syntax of the value string is: "win|mac [horizontal|vertical] [zeroInFullScreen] [leftToRight|rightToLeft]".
    The string must start with "win" (for Windows or Linux) or with "mac" (for macOS) and specifies the platform where the placeholder should be used. On macOS, you need the placeholder in the top-left corner, but on Windows/Linux you need it in the top-right corner. So if your application supports fullWindowContent mode on both platforms, you can add two placeholders to your layout and FlatLaf automatically uses only one of them. The other gets size 0,0.
    Optionally, you can append following options to the value string (separated by space characters):
    
    "horizontal" - preferred height is zero
    "vertical" - preferred width is zero
    "zeroInFullScreen" - in full-screen mode on macOS, preferred size is 0,0
    "leftToRight" - in right-to-left component orientation, preferred size is 0,0
    "rightToLeft" - in left-to-right component orientation, preferred size is 0,0
    Example for adding placeholder to top-left corner on macOS:
    JPanel placeholder = new JPanel(); placeholder.putClientProperty( FlatClientProperties.FULL_WINDOW_CONTENT_BUTTONS_PLACEHOLDER, "mac" ); JToolBar toolBar = new JToolBar(); // add tool bar items JPanel toolBarPanel = new JPanel( new BorderLayout() ); toolBarPanel.add( placeholder, BorderLayout.WEST ); toolBarPanel.add( toolBar, BorderLayout.CENTER ); frame.getContentPane().add( toolBarPanel, BorderLayout.NORTH );
    Or add placeholder as first item to the tool bar:
    JPanel placeholder = new JPanel(); placeholder.putClientProperty( FlatClientProperties.FULL_WINDOW_CONTENT_BUTTONS_PLACEHOLDER, "mac" ); JToolBar toolBar = new JToolBar(); toolBar.add( placeholder ); // add tool bar items frame.getContentPane().add( toolBar, BorderLayout.NORTH );
    If a tabbed pane is located at the top, you can add the placeholder as leading component to that tabbed pane:
    JPanel placeholder = new JPanel(); placeholder.putClientProperty( FlatClientProperties.FULL_WINDOW_CONTENT_BUTTONS_PLACEHOLDER, "mac" ); tabbedPane.putClientProperty( FlatClientProperties.TABBED_PANE_LEADING_COMPONENT, placeholder );
    
    Component JPanel
    Value type String
    Since:
    
    3.4
    
    See Also:
    
    Constant Field Values
  - POPUP_BORDER_CORNER_RADIUS
```
static final String POPUP_BORDER_CORNER_RADIUS
```
    Specifies the popup border corner radius if the component is shown in a popup or if the component is the owner of another component that is shown in a popup.
    Note that this is not available on all platforms since it requires special support. Supported platforms:
    
    Windows 11: Only two corner radiuses are supported by the OS: DWMWCP_ROUND is 8px and DWMWCP_ROUNDSMALL is 4px. If this value is 1 - 4, then DWMWCP_ROUNDSMALL is used. If it is >= 5, then DWMWCP_ROUND is used.
    macOS (10.14 and later): Any corner radius is supported.
    Component JComponent
    Value type Integer
    Since:
    
    3.1
    
    See Also:
    
    Constant Field Values
  - POPUP_ROUNDED_BORDER_WIDTH
```
static final String POPUP_ROUNDED_BORDER_WIDTH
```
    Specifies the popup rounded border width if the component is shown in a popup or if the component is the owner of another component that is shown in a popup.
    Only used if popup uses rounded border.
    Note that this is not available on all platforms since it requires special support. Supported platforms:
    
    macOS (10.14 and later)
    Component JComponent
    Value type Integer or Float
    Since:
    
    3.3
    
    See Also:
    
    Constant Field Values
  - POPUP_DROP_SHADOW_PAINTED
```
static final String POPUP_DROP_SHADOW_PAINTED
```
    Specifies whether a drop shadow is painted if the component is shown in a popup or if the component is the owner of another component that is shown in a popup.
    Component JComponent
    Value type Boolean
    
    See Also:
    
    Constant Field Values
  - POPUP_FORCE_HEAVY_WEIGHT
```
static final String POPUP_FORCE_HEAVY_WEIGHT
```
    Specifies whether a heavy weight window should be used if the component is shown in a popup or if the component is the owner of another component that is shown in a popup.
    Component JComponent
    Value type Boolean
    
    See Also:
    
    Constant Field Values
  - PROGRESS_BAR_LARGE_HEIGHT
```
static final String PROGRESS_BAR_LARGE_HEIGHT
```
    Specifies whether the progress bar has always the larger height even if no string is painted.
    Component JProgressBar
    Value type Boolean
    
    See Also:
    
    Constant Field Values
  - PROGRESS_BAR_SQUARE
```
static final String PROGRESS_BAR_SQUARE
```
    Specifies whether the progress bar is paint with square edges.
    Component JProgressBar
    Value type Boolean
    
    See Also:
    
    Constant Field Values
  - USE_WINDOW_DECORATIONS
```
static final String USE_WINDOW_DECORATIONS
```
    Specifies whether FlatLaf native window decorations should be used for JFrame or JDialog.
    Setting this enables/disables using FlatLaf native window decorations for the window that contains the root pane.
    This client property has lower priority than system property FlatSystemProperties.USE_WINDOW_DECORATIONS, but higher priority than UI default TitlePane.useWindowDecorations.
    (requires Window 10)
    Component JRootPane
    Value type Boolean
    
    Since:
    
    1.1.1
    
    See Also:
    
    Constant Field Values
  - MENU_BAR_EMBEDDED
```
static final String MENU_BAR_EMBEDDED
```
    Specifies whether the menu bar is embedded into the window title pane if window decorations are enabled.
    Setting this enables/disables embedding for the window that contains the root pane.
    This client property has lower priority than system property FlatSystemProperties.MENUBAR_EMBEDDED, but higher priority than UI default TitlePane.menuBarEmbedded.
    (requires Window 10)
    Component JRootPane
    Value type Boolean
    
    See Also:
    
    Constant Field Values
  - FULL_WINDOW_CONTENT
```
static final String FULL_WINDOW_CONTENT
```
    Specifies whether the content pane (and the glass pane) should be extended into the window title bar area (requires enabled window decorations). Default is false.
    On macOS, use client property apple.awt.fullWindowContent (see macOS Full window content).
    Setting this enables/disables full window content for the JFrame or JDialog that contains the root pane.
    If true, the content pane (and the glass pane) is extended into the title bar area. The window icon and title are hidden. Only the iconfify/maximize/close buttons stay visible in the upper right corner (and overlap the content pane).
    The user can left-click-and-drag on the title bar area to move the window, except when clicking on a component that processes mouse events (e.g. buttons or menus).
    Component JRootPane
    Value type Boolean
    
    Since:
    
    3.4
    
    See Also:
    
    Constant Field Values
  - FULL_WINDOW_CONTENT_BUTTONS_BOUNDS
```
static final String FULL_WINDOW_CONTENT_BUTTONS_BOUNDS
```
    Contains the current bounds of the iconfify/maximize/close buttons (in root pane coordinates) if fullWindowContent mode is enabled. Otherwise its value is null.
    Note: Do not set this client property. It is set by FlatLaf.
    Component JRootPane
    Value type Rectangle
    
    Since:
    
    3.4
    
    See Also:
    
    Constant Field Values
  - TITLE_BAR_SHOW_ICON
```
static final String TITLE_BAR_SHOW_ICON
```
    Specifies whether the window icon should be shown in the window title bar (requires enabled window decorations). Default is UI property TitlePane.showIcon.
    Setting this shows/hides the windows icon for the JFrame or JDialog that contains the root pane.
    This client property has higher priority than UI default TitlePane.showIcon.
    (requires Window 10)
    Component JRootPane
    Value type Boolean
    
    Since:
    
    2
    
    See Also:
    
    Constant Field Values
  - TITLE_BAR_SHOW_TITLE
```
static final String TITLE_BAR_SHOW_TITLE
```
    Specifies whether the window title should be shown in the window title bar (requires enabled window decorations). Default is true.
    Setting this shows/hides the windows title for the JFrame or JDialog that contains the root pane.
    Component JRootPane
    Value type Boolean
    
    Since:
    
    3
    
    See Also:
    
    Constant Field Values
  - TITLE_BAR_SHOW_ICONIFFY
```
static final String TITLE_BAR_SHOW_ICONIFFY
```
    Specifies whether the "iconify" button should be shown in the window title bar (requires enabled window decorations). Default is true.
    Setting this shows/hides the "iconify" button for the JFrame that contains the root pane.
    Component JRootPane
    Value type Boolean
    
    Since:
    
    3
    
    See Also:
    
    Constant Field Values
  - TITLE_BAR_SHOW_MAXIMIZE
```
static final String TITLE_BAR_SHOW_MAXIMIZE
```
    Specifies whether the "maximize/restore" button should be shown in the window title bar (requires enabled window decorations). Default is true.
    Setting this shows/hides the "maximize/restore" button for the JFrame that contains the root pane.
    Component JRootPane
    Value type Boolean
    
    Since:
    
    3
    
    See Also:
    
    Constant Field Values
  - TITLE_BAR_SHOW_CLOSE
```
static final String TITLE_BAR_SHOW_CLOSE
```
    Specifies whether the "close" button should be shown in the window title bar (requires enabled window decorations). Default is true.
    Setting this shows/hides the "close" button for the JFrame or JDialog that contains the root pane.
    Component JRootPane
    Value type Boolean
    
    Since:
    
    3
    
    See Also:
    
    Constant Field Values
  - TITLE_BAR_BACKGROUND
```
static final String TITLE_BAR_BACKGROUND
```
    Background color of window title bar (requires enabled window decorations).
    (requires Window 10)
    Component JRootPane
    Value type Color
    
    Since:
    
    1.1.2
    
    See Also:
    
    Constant Field Values
  - TITLE_BAR_FOREGROUND
```
static final String TITLE_BAR_FOREGROUND
```
    Foreground color of window title bar (requires enabled window decorations).
    (requires Window 10)
    Component JRootPane
    Value type Color
    
    Since:
    
    1.1.2
    
    See Also:
    
    Constant Field Values
  - GLASS_PANE_FULL_HEIGHT
```
static final String GLASS_PANE_FULL_HEIGHT
```
    Specifies whether the glass pane should have full height and overlap the title bar, if FlatLaf window decorations are enabled. Default is false.
    Component JRootPane
    Value type Boolean
    
    Since:
    
    3.1
    
    See Also:
    
    Constant Field Values
  - WINDOW_STYLE
```
static final String WINDOW_STYLE
```
    Specifies the style of the window title bar. Besides the default title bar style, you can use a Utility-style title bar, which is smaller than the default title bar.
    On Windows 10/11, this requires FlatLaf window decorations. On macOS, Java supports this out of the box.
    Note that this client property must be set before the window becomes displayable. Otherwise, an IllegalComponentStateException is thrown.
    Component JRootPane
    Value type String
    Allowed Values WINDOW_STYLE_SMALL
    
    Since:
    
    3.2
    
    See Also:
    
    Constant Field Values
  - WINDOW_STYLE_SMALL
```
static final String WINDOW_STYLE_SMALL
```
    The window has Utility-style title bar, which is smaller than default title bar.
    This is the same as using Window.setType(java.awt.Window.Type)( Window.Type.UTILITY ).
    
    Since:
    
    3.2
    
    See Also:
    
    WINDOW_STYLE, Constant Field Values
  - SCROLL_BAR_SHOW_BUTTONS
```
static final String SCROLL_BAR_SHOW_BUTTONS
```
    Specifies whether the decrease/increase arrow buttons of a scrollbar are shown.
    Component JScrollBar or JScrollPane
    Value type Boolean
    
    See Also:
    
    Constant Field Values
  - SCROLL_PANE_SMOOTH_SCROLLING
```
static final String SCROLL_PANE_SMOOTH_SCROLLING
```
    Specifies whether the scroll pane uses smooth scrolling.
    Component JScrollPane
    Value type Boolean
    
    See Also:
    
    Constant Field Values
  - SPLIT_PANE_EXPANDABLE_SIDE
```
static final String SPLIT_PANE_EXPANDABLE_SIDE
```
    Specifies what side of the spilt pane is allowed to expand via one-touch expanding arrow buttons. Requires that one-touch expanding is enabled with JSplitPane.setOneTouchExpandable(boolean).
    Component JSplitPane
    Value type String
    Allowed Values SPLIT_PANE_EXPANDABLE_SIDE_LEFT or SPLIT_PANE_EXPANDABLE_SIDE_RIGHT
    
    Since:
    
    2.2
    
    See Also:
    
    Constant Field Values
  - SPLIT_PANE_EXPANDABLE_SIDE_LEFT
```
static final String SPLIT_PANE_EXPANDABLE_SIDE_LEFT
```
    Allow expanding only left/top side of the split pane.
    
    Since:
    
    2.2
    
    See Also:
    
    SPLIT_PANE_EXPANDABLE_SIDE, Constant Field Values
  - SPLIT_PANE_EXPANDABLE_SIDE_RIGHT
```
static final String SPLIT_PANE_EXPANDABLE_SIDE_RIGHT
```
    Allow expanding only right/bottom side of the split pane.
    
    Since:
    
    2.2
    
    See Also:
    
    SPLIT_PANE_EXPANDABLE_SIDE, Constant Field Values
  - TABBED_PANE_TAB_TYPE
```
static final String TABBED_PANE_TAB_TYPE
```
    Specifies type of the selected tab.
    Component JTabbedPane
    Value type String
    Allowed Values TABBED_PANE_TAB_TYPE_UNDERLINED or TABBED_PANE_TAB_TYPE_CARD
    
    Since:
    
    2
    
    See Also:
    
    Constant Field Values
  - TABBED_PANE_TAB_TYPE_UNDERLINED
```
static final String TABBED_PANE_TAB_TYPE_UNDERLINED
```
    Paint the selected tab underlined.
    
    Since:
    
    2
    
    See Also:
    
    TABBED_PANE_TAB_TYPE, Constant Field Values
  - TABBED_PANE_TAB_TYPE_CARD
```
static final String TABBED_PANE_TAB_TYPE_CARD
```
    Paint the selected tab as card.
    
    Since:
    
    2
    
    See Also:
    
    TABBED_PANE_TAB_TYPE, Constant Field Values
  - TABBED_PANE_SHOW_TAB_SEPARATORS
```
static final String TABBED_PANE_SHOW_TAB_SEPARATORS
```
    Specifies whether separators are shown between tabs.
    Component JTabbedPane
    Value type Boolean
    
    See Also:
    
    Constant Field Values
  - TABBED_PANE_SHOW_CONTENT_SEPARATOR
```
static final String TABBED_PANE_SHOW_CONTENT_SEPARATOR
```
    Specifies whether the separator between tabs area and content area should be shown.
    Component JTabbedPane
    Value type Boolean
    
    See Also:
    
    Constant Field Values
  - TABBED_PANE_HAS_FULL_BORDER
```
static final String TABBED_PANE_HAS_FULL_BORDER
```
    Specifies whether a full border is painted around a tabbed pane.
    Component JTabbedPane
    Value type Boolean
    
    See Also:
    
    Constant Field Values
  - TABBED_PANE_HIDE_TAB_AREA_WITH_ONE_TAB
```
static final String TABBED_PANE_HIDE_TAB_AREA_WITH_ONE_TAB
```
    Specifies whether the tab area should be hidden if it contains only one tab.
    Component JTabbedPane
    Value type Boolean
    
    See Also:
    
    Constant Field Values
  - TABBED_PANE_MINIMUM_TAB_WIDTH
```
static final String TABBED_PANE_MINIMUM_TAB_WIDTH
```
    Specifies the minimum width of a tab.
    Component JTabbedPane or tab content components (see JTabbedPane.setComponentAt(int, java.awt.Component))
    Value type Integer
    
    See Also:
    
    Constant Field Values
  - TABBED_PANE_MAXIMUM_TAB_WIDTH
```
static final String TABBED_PANE_MAXIMUM_TAB_WIDTH
```
    Specifies the maximum width of a tab.
    Applied only if tab does not have a custom tab component (see JTabbedPane.setTabComponentAt(int, java.awt.Component)).
    Component JTabbedPane or tab content components (see JTabbedPane.setComponentAt(int, java.awt.Component))
    Value type Integer
    
    See Also:
    
    Constant Field Values
  - TABBED_PANE_TAB_HEIGHT
```
static final String TABBED_PANE_TAB_HEIGHT
```
    Specifies the minimum height of a tab.
    Component JTabbedPane
    Value type Integer
    
    See Also:
    
    TABBED_PANE_TAB_INSETS, Constant Field Values
  - TABBED_PANE_TAB_INSETS
```
static final String TABBED_PANE_TAB_INSETS
```
    Specifies the insets of a tab.
    Component JTabbedPane or tab content components (see JTabbedPane.setComponentAt(int, java.awt.Component))
    Value type Insets
    
    See Also:
    
    TABBED_PANE_TAB_HEIGHT, Constant Field Values
  - TABBED_PANE_TAB_AREA_INSETS
```
static final String TABBED_PANE_TAB_AREA_INSETS
```
    Specifies the insets of the tab area.
    Component JTabbedPane
    Value type Insets
    
    See Also:
    
    Constant Field Values
  - TABBED_PANE_TAB_CLOSABLE
```
static final String TABBED_PANE_TAB_CLOSABLE
```
    Specifies whether tabs are closable. If set to true on a tabbed pane component, all tabs in that tabbed pane are closable. To make individual tabs closable, set it to true on a tab content component.
    Note that you have to specify a callback (see TABBED_PANE_TAB_CLOSABLE) that is invoked when the user clicks a tab close button. The callback is responsible for closing the tab.
    Component JTabbedPane or tab content components (see JTabbedPane.setComponentAt(int, java.awt.Component))
    Value type Boolean
    
    See Also:
    
    TABBED_PANE_TAB_CLOSE_CALLBACK, Constant Field Values
  - TABBED_PANE_TAB_CLOSE_TOOLTIPTEXT
```
static final String TABBED_PANE_TAB_CLOSE_TOOLTIPTEXT
```
    Specifies the tooltip text used for tab close buttons.
    Component JTabbedPane or tab content components (see JTabbedPane.setComponentAt(int, java.awt.Component))
    Value type String
    
    See Also:
    
    TABBED_PANE_TAB_CLOSABLE, Constant Field Values
  - TABBED_PANE_TAB_CLOSE_CALLBACK
```
static final String TABBED_PANE_TAB_CLOSE_CALLBACK
```
    Specifies the callback that is invoked when a tab close button is clicked. The callback is responsible for closing the tab.
    Either use a IntConsumer that receives the tab index as parameter:
    myTabbedPane.putClientProperty( "JTabbedPane.tabCloseCallback", (IntConsumer) tabIndex -> { // close tab here } );
    Or use a BiConsumer<javax.swing.JTabbedPane, Integer> that receives the tabbed pane and the tab index as parameters:
    myTabbedPane.putClientProperty( "JTabbedPane.tabCloseCallback", (BiConsumer<JTabbedPane, Integer>) (tabbedPane, tabIndex) -> { // close tab here } );
    If you need to check whether a modifier key (e.g. Alt or Shift) was pressed while the user clicked the tab close button, use EventQueue.getCurrentEvent() to get current event, check whether it is a MouseEvent and invoke its methods. E.g.
    AWTEvent e = EventQueue.getCurrentEvent(); boolean shift = (e instanceof MouseEvent) ? ((MouseEvent)e).isShiftDown() : false;
    
    Component JTabbedPane or tab content components (see JTabbedPane.setComponentAt(int, java.awt.Component))
    Value type IntConsumer or BiConsumer<javax.swing.JTabbedPane, Integer>
    See Also:
    
    TABBED_PANE_TAB_CLOSABLE, Constant Field Values
  - TABBED_PANE_TABS_POPUP_POLICY
```
static final String TABBED_PANE_TABS_POPUP_POLICY
```
    Specifies the display policy for the "more tabs" button, which shows a popup menu with the (partly) hidden tabs.
    Component JTabbedPane
    Value type String
    Allowed Values TABBED_PANE_POLICY_NEVER or TABBED_PANE_POLICY_AS_NEEDED
    
    See Also:
    
    Constant Field Values
  - TABBED_PANE_SCROLL_BUTTONS_POLICY
```
static final String TABBED_PANE_SCROLL_BUTTONS_POLICY
```
    Specifies the display policy for the forward/backward scroll arrow buttons.
    Component JTabbedPane
    Value type String
    Allowed Values TABBED_PANE_POLICY_NEVER, TABBED_PANE_POLICY_AS_NEEDED or TABBED_PANE_POLICY_AS_NEEDED_SINGLE
    
    See Also:
    
    Constant Field Values
  - TABBED_PANE_POLICY_NEVER
```
static final String TABBED_PANE_POLICY_NEVER
```
    Display never.
    
    See Also:
    
    TABBED_PANE_TABS_POPUP_POLICY, TABBED_PANE_SCROLL_BUTTONS_POLICY, Constant Field Values
  - TABBED_PANE_POLICY_AS_NEEDED
```
static final String TABBED_PANE_POLICY_AS_NEEDED
```
    Display only when needed.
    If used for TABBED_PANE_SCROLL_BUTTONS_POLICY, both scroll arrow buttons are either shown or hidden. Buttons are disabled if scrolling in that direction is not applicable.
    
    See Also:
    
    TABBED_PANE_TABS_POPUP_POLICY, TABBED_PANE_SCROLL_BUTTONS_POLICY, Constant Field Values
  - TABBED_PANE_POLICY_AS_NEEDED_SINGLE
```
static final String TABBED_PANE_POLICY_AS_NEEDED_SINGLE
```
    Display single button only when needed.
    If scroll button placement is trailing, then this option is ignored and both buttons are shown or hidden as needed.
    
    See Also:
    
    TABBED_PANE_SCROLL_BUTTONS_POLICY, Constant Field Values
  - TABBED_PANE_SCROLL_BUTTONS_PLACEMENT
```
static final String TABBED_PANE_SCROLL_BUTTONS_PLACEMENT
```
    Specifies the placement of the forward/backward scroll arrow buttons.
    Component JTabbedPane
    Value type String
    Allowed Values TABBED_PANE_PLACEMENT_BOTH or TABBED_PANE_PLACEMENT_TRAILING
    
    See Also:
    
    Constant Field Values
  - TABBED_PANE_PLACEMENT_BOTH
```
static final String TABBED_PANE_PLACEMENT_BOTH
```
    The forward/backward scroll arrow buttons are placed on both sides of the tab area. The backward scroll button at the left/top side. The forward scroll button at the right/bottom side.
    
    See Also:
    
    TABBED_PANE_SCROLL_BUTTONS_PLACEMENT, Constant Field Values
  - TABBED_PANE_PLACEMENT_TRAILING
```
static final String TABBED_PANE_PLACEMENT_TRAILING
```
    The forward/backward scroll arrow buttons are placed on the trailing side of the tab area.
    
    See Also:
    
    TABBED_PANE_SCROLL_BUTTONS_PLACEMENT, Constant Field Values
  - TABBED_PANE_TAB_AREA_ALIGNMENT
```
static final String TABBED_PANE_TAB_AREA_ALIGNMENT
```
    Specifies the alignment of the tab area.
    Component JTabbedPane
    Value type Integer or String
    Allowed Values SwingConstants.LEADING (default), SwingConstants.TRAILING, SwingConstants.CENTER, TABBED_PANE_ALIGN_LEADING (default), TABBED_PANE_ALIGN_TRAILING, TABBED_PANE_ALIGN_CENTER or TABBED_PANE_ALIGN_FILL
    
    See Also:
    
    Constant Field Values
  - TABBED_PANE_TAB_ALIGNMENT
```
static final String TABBED_PANE_TAB_ALIGNMENT
```
    Specifies the horizontal alignment of the tab title and icon.
    Component JTabbedPane or tab content components (see JTabbedPane.setComponentAt(int, java.awt.Component))
    Value type Integer or String
    Allowed Values SwingConstants.LEADING, SwingConstants.TRAILING, SwingConstants.CENTER (default), TABBED_PANE_ALIGN_LEADING, TABBED_PANE_ALIGN_TRAILING or TABBED_PANE_ALIGN_CENTER (default)
    
    See Also:
    
    Constant Field Values
  - TABBED_PANE_ALIGN_LEADING
```
static final String TABBED_PANE_ALIGN_LEADING
```
    Align to the leading edge.
    
    See Also:
    
    TABBED_PANE_TAB_AREA_ALIGNMENT, TABBED_PANE_TAB_ALIGNMENT, Constant Field Values
  - TABBED_PANE_ALIGN_TRAILING
```
static final String TABBED_PANE_ALIGN_TRAILING
```
    Align to the trailing edge.
    
    See Also:
    
    TABBED_PANE_TAB_AREA_ALIGNMENT, TABBED_PANE_TAB_ALIGNMENT, Constant Field Values
  - TABBED_PANE_ALIGN_CENTER
```
static final String TABBED_PANE_ALIGN_CENTER
```
    Align to center.
    
    See Also:
    
    TABBED_PANE_TAB_AREA_ALIGNMENT, TABBED_PANE_TAB_ALIGNMENT, Constant Field Values
  - TABBED_PANE_ALIGN_FILL
```
static final String TABBED_PANE_ALIGN_FILL
```
    Stretch to fill all available space.
    
    See Also:
    
    TABBED_PANE_TAB_AREA_ALIGNMENT, Constant Field Values
  - TABBED_PANE_TAB_WIDTH_MODE
```
static final String TABBED_PANE_TAB_WIDTH_MODE
```
    Specifies how the tabs should be sized.
    Component JTabbedPane
    Value type String
    Allowed Values TABBED_PANE_TAB_WIDTH_MODE_PREFERRED (default), TABBED_PANE_TAB_WIDTH_MODE_EQUAL or TABBED_PANE_TAB_WIDTH_MODE_COMPACT
    
    See Also:
    
    Constant Field Values
  - TABBED_PANE_TAB_WIDTH_MODE_PREFERRED
```
static final String TABBED_PANE_TAB_WIDTH_MODE_PREFERRED
```
    Tab width is adjusted to tab icon and title.
    
    See Also:
    
    TABBED_PANE_TAB_WIDTH_MODE, Constant Field Values
  - TABBED_PANE_TAB_WIDTH_MODE_EQUAL
```
static final String TABBED_PANE_TAB_WIDTH_MODE_EQUAL
```
    All tabs in a tabbed pane has same width.
    
    See Also:
    
    TABBED_PANE_TAB_WIDTH_MODE, Constant Field Values
  - TABBED_PANE_TAB_WIDTH_MODE_COMPACT
```
static final String TABBED_PANE_TAB_WIDTH_MODE_COMPACT
```
    Unselected tabs are smaller because they show only the tab icon, but no tab title. Selected tabs show both.
    
    See Also:
    
    TABBED_PANE_TAB_WIDTH_MODE, Constant Field Values
  - TABBED_PANE_TAB_ICON_PLACEMENT
```
static final String TABBED_PANE_TAB_ICON_PLACEMENT
```
    Specifies the tab icon placement (relative to tab title).
    Component JTabbedPane
    Value type Integer
    Allowed Values SwingConstants.LEADING (default), SwingConstants.TRAILING, SwingConstants.TOP or SwingConstants.BOTTOM
    
    See Also:
    
    Constant Field Values
  - TABBED_PANE_TAB_ROTATION
```
static final String TABBED_PANE_TAB_ROTATION
```
    Specifies the rotation of the tabs (title, icon, etc.).
    Component JTabbedPane
    Value type Integer or String
    Allowed Values SwingConstants.LEFT, SwingConstants.RIGHT, TABBED_PANE_TAB_ROTATION_NONE (default), TABBED_PANE_TAB_ROTATION_AUTO, TABBED_PANE_TAB_ROTATION_LEFT or TABBED_PANE_TAB_ROTATION_RIGHT
    
    Since:
    
    3.3
    
    See Also:
    
    Constant Field Values
  - TABBED_PANE_TAB_ROTATION_NONE
```
static final String TABBED_PANE_TAB_ROTATION_NONE
```
    Tabs are not rotated.
    
    Since:
    
    3.3
    
    See Also:
    
    TABBED_PANE_TAB_ROTATION, Constant Field Values
  - TABBED_PANE_TAB_ROTATION_AUTO
```
static final String TABBED_PANE_TAB_ROTATION_AUTO
```
    Tabs are rotated depending on tab placement.
    For top and bottom tab placement, the tabs are not rotated.
    For left tab placement, the tabs are rotated counter-clockwise.
    For right tab placement, the tabs are rotated clockwise.
    
    Since:
    
    3.3
    
    See Also:
    
    TABBED_PANE_TAB_ROTATION, Constant Field Values
  - TABBED_PANE_TAB_ROTATION_LEFT
```
static final String TABBED_PANE_TAB_ROTATION_LEFT
```
    Tabs are rotated counter-clockwise.
    
    Since:
    
    3.3
    
    See Also:
    
    TABBED_PANE_TAB_ROTATION, Constant Field Values
  - TABBED_PANE_TAB_ROTATION_RIGHT
```
static final String TABBED_PANE_TAB_ROTATION_RIGHT
```
    Tabs are rotated clockwise.
    
    Since:
    
    3.3
    
    See Also:
    
    TABBED_PANE_TAB_ROTATION, Constant Field Values
  - TABBED_PANE_LEADING_COMPONENT
```
static final String TABBED_PANE_LEADING_COMPONENT
```
    Specifies a component that will be placed at the leading edge of the tabs area.
    For top and bottom tab placement, the laid out component size will be the preferred component width and the tab area height.
    For left and right tab placement, the laid out component size will be the tab area width and the preferred component height.
    Component JTabbedPane
    Value type Component
    
    See Also:
    
    Constant Field Values
  - TABBED_PANE_TRAILING_COMPONENT
```
static final String TABBED_PANE_TRAILING_COMPONENT
```
    Specifies a component that will be placed at the trailing edge of the tabs area.
    For top and bottom tab placement, the laid out component size will be the available horizontal space (minimum is preferred component width) and the tab area height.
    For left and right tab placement, the laid out component size will be the tab area width and the available vertical space (minimum is preferred component height).
    Component JTabbedPane
    Value type Component
    
    See Also:
    
    Constant Field Values
  - SELECT_ALL_ON_FOCUS_POLICY
```
static final String SELECT_ALL_ON_FOCUS_POLICY
```
    Specifies whether all text is selected when the text component gains focus.
    Component JTextField (and subclasses)
    Value type String
    Allowed Values SELECT_ALL_ON_FOCUS_POLICY_NEVER, SELECT_ALL_ON_FOCUS_POLICY_ONCE (default) or SELECT_ALL_ON_FOCUS_POLICY_ALWAYS
    
    See Also:
    
    Constant Field Values
  - SELECT_ALL_ON_FOCUS_POLICY_NEVER
```
static final String SELECT_ALL_ON_FOCUS_POLICY_NEVER
```
    Never select all text when the text component gains focus.
    
    See Also:
    
    SELECT_ALL_ON_FOCUS_POLICY, Constant Field Values
  - SELECT_ALL_ON_FOCUS_POLICY_ONCE
```
static final String SELECT_ALL_ON_FOCUS_POLICY_ONCE
```
    Select all text when the text component gains focus for the first time and selection was not modified (is at end of text). This is the default.
    
    See Also:
    
    SELECT_ALL_ON_FOCUS_POLICY, Constant Field Values
  - SELECT_ALL_ON_FOCUS_POLICY_ALWAYS
```
static final String SELECT_ALL_ON_FOCUS_POLICY_ALWAYS
```
    Always select all text when the text component gains focus.
    
    See Also:
    
    SELECT_ALL_ON_FOCUS_POLICY, Constant Field Values
  - PLACEHOLDER_TEXT
```
static final String PLACEHOLDER_TEXT
```
    Placeholder text that is only painted if the text field is empty.
    Component JTextField (and subclasses) or JComboBox
    Value type String
    
    See Also:
    
    Constant Field Values
  - TEXT_FIELD_PADDING
```
static final String TEXT_FIELD_PADDING
```
    Specifies the padding of the text. This changes the location and size of the text view within the component bounds, but does not affect the size of the component.
    Component JTextField (and subclasses)
    Value type Insets
    
    Since:
    
    1.4
    
    See Also:
    
    Constant Field Values
  - TEXT_FIELD_LEADING_ICON
```
static final String TEXT_FIELD_LEADING_ICON
```
    Specifies an icon that will be placed at the leading edge of the text field.
    Component JTextField (and subclasses)
    Value type Icon
    
    Since:
    
    2
    
    See Also:
    
    Constant Field Values
  - TEXT_FIELD_TRAILING_ICON
```
static final String TEXT_FIELD_TRAILING_ICON
```
    Specifies an icon that will be placed at the trailing edge of the text field.
    Component JTextField (and subclasses)
    Value type Icon
    
    Since:
    
    2
    
    See Also:
    
    Constant Field Values
  - TEXT_FIELD_LEADING_COMPONENT
```
static final String TEXT_FIELD_LEADING_COMPONENT
```
    Specifies a component that will be placed at the leading edge of the text field.
    The component will be positioned inside and aligned to the visible text field border. There is no gap between the visible border and the component. The laid out component size will be the preferred component width and the inner text field height.
    The component should be not opaque because the text field border is painted slightly inside the usually visible border in some cases. E.g. when focused (in some themes) or when an outline color is specified (see OUTLINE).
    The component is prepared in the following way:
    
    Component client property STYLE_CLASS is set to inTextField.
    If component is a button or toggle button, client property BUTTON_TYPE is set to BUTTON_TYPE_TOOLBAR_BUTTON and button cursor is set to default cursor (if not set).
    If component is a toolbar, client property STYLE_CLASS is set to inTextField on all toolbar children and toolbar cursor is set to default cursor (if not set).
    Because text fields use the text cursor by default and the cursor is inherited by child components, it may be necessary to explicitly set component cursor if you e.g. need the default arrow cursor. E.g. comp.setCursor( Cursor.getDefaultCursor() ).
    Styling is used to modify insets/margins and appearance of buttons and toolbars so that they fit nicely into the text field and do not increase text field height. See styles [style]Button.inTextField and [style]ToolBar.inTextField in Flat[Light|Dark]Laf.properties.
    Component JTextField (and subclasses)
    Value type JComponent
    Since:
    
    2
    
    See Also:
    
    Constant Field Values
  - TEXT_FIELD_TRAILING_COMPONENT
```
static final String TEXT_FIELD_TRAILING_COMPONENT
```
    Specifies a component that will be placed at the trailing edge of the text field.
    See TEXT_FIELD_LEADING_COMPONENT for details.
    Component JTextField (and subclasses)
    Value type JComponent
    
    Since:
    
    2
    
    See Also:
    
    Constant Field Values
  - TEXT_FIELD_SHOW_CLEAR_BUTTON
```
static final String TEXT_FIELD_SHOW_CLEAR_BUTTON
```
    Specifies whether a "clear" (or "cancel") button is shown on the trailing side if the text field is not empty, editable and enabled. Default is false.
    Component JTextField (and subclasses)
    Value type Boolean
    
    Since:
    
    2
    
    See Also:
    
    Constant Field Values
  - TEXT_FIELD_CLEAR_CALLBACK
```
static final String TEXT_FIELD_CLEAR_CALLBACK
```
    Specifies the callback that is invoked when a "clear" (or "cancel") button is clicked. If a callback is specified than it is responsible for clearing the text field. Without callback, the text field clears itself.
    Either use a Runnable:
    myTextField.putClientProperty( "JTextField.clearCallback", (Runnable) () -> { // clear field here or cancel search } );
    Or use a Consumer<javax.swing.text.JTextComponent> that receives the text field as parameter:
    myTextField.putClientProperty( "JTextField.clearCallback", (Consumer<JTextComponent>) textField -> { // clear field here or cancel search } );
    
    Component JTextField (and subclasses)
    Value type Runnable or Consumer<javax.swing.text.JTextComponent>
    Since:
    
    2
    
    See Also:
    
    TEXT_FIELD_SHOW_CLEAR_BUTTON, Constant Field Values
  - TAB_BUTTON_UNDERLINE_PLACEMENT
```
static final String TAB_BUTTON_UNDERLINE_PLACEMENT
```
    Placement of underline if toggle button type is BUTTON_TYPE_TAB
    Component JToggleButton
    Value type Integer
    Allowed Values SwingConstants.BOTTOM (default), SwingConstants.TOP, SwingConstants.LEFT or SwingConstants.RIGHT
    
    Since:
    
    2.3
    
    See Also:
    
    Constant Field Values
  - TAB_BUTTON_UNDERLINE_HEIGHT
```
static final String TAB_BUTTON_UNDERLINE_HEIGHT
```
    Thickness of underline if toggle button type is BUTTON_TYPE_TAB.
    Component JToggleButton
    Value type Integer
    
    See Also:
    
    Constant Field Values
  - TAB_BUTTON_UNDERLINE_COLOR
```
static final String TAB_BUTTON_UNDERLINE_COLOR
```
    Color of underline if toggle button type is BUTTON_TYPE_TAB.
    Component JToggleButton
    Value type Color
    
    See Also:
    
    Constant Field Values
  - TAB_BUTTON_SELECTED_BACKGROUND
```
static final String TAB_BUTTON_SELECTED_BACKGROUND
```
    Background color if selected and toggle button type is BUTTON_TYPE_TAB.
    Component JToggleButton
    Value type Color
    
    See Also:
    
    Constant Field Values
  - TREE_WIDE_SELECTION
```
static final String TREE_WIDE_SELECTION
```
    Override if a tree shows a wide selection. Default is true.
    Component JTree
    Value type Boolean
    
    See Also:
    
    Constant Field Values
  - TREE_PAINT_SELECTION
```
static final String TREE_PAINT_SELECTION
```
    Specifies whether tree item selection is painted. Default is true. If set to false, then the tree cell renderer is responsible for painting selection.
    Component JTree
    Value type Boolean
    
    See Also:
    
    Constant Field Values
  - MACOS_WINDOW_BUTTONS_SPACING
```
static final String MACOS_WINDOW_BUTTONS_SPACING
```
    Specifies the spacing around the macOS window close/minimize/zoom buttons. Useful if full window content is enabled.
    (requires macOS 10.14+ for "medium" spacing and macOS 11+ for "large" spacing, requires Java 17+)
    Component JRootPane
    Value type String
    Allowed Values MACOS_WINDOW_BUTTONS_SPACING_MEDIUM or MACOS_WINDOW_BUTTONS_SPACING_LARGE (requires macOS 11+)
    
    Since:
    
    3.4
    
    See Also:
    
    Constant Field Values
  - MACOS_WINDOW_BUTTONS_SPACING_MEDIUM
```
static final String MACOS_WINDOW_BUTTONS_SPACING_MEDIUM
```
    Add medium spacing around the macOS window close/minimize/zoom buttons.
    
    Since:
    
    3.4
    
    See Also:
    
    MACOS_WINDOW_BUTTONS_SPACING, Constant Field Values
  - MACOS_WINDOW_BUTTONS_SPACING_LARGE
```
static final String MACOS_WINDOW_BUTTONS_SPACING_LARGE
```
    Add large spacing around the macOS window close/minimize/zoom buttons.
    (requires macOS 11+; "medium" is used on older systems)
    
    Since:
    
    3.4
    
    See Also:
    
    MACOS_WINDOW_BUTTONS_SPACING, Constant Field Values
- Method Detail
  - clientPropertyEquals
```
static boolean clientPropertyEquals(JComponent c,
                                    String key,
                                    Object value)
```
    Checks whether a client property of a component has the given value.
  - clientPropertyBoolean
```
static boolean clientPropertyBoolean(JComponent c,
                                     String key,
                                     boolean defaultValue)
```
    Checks whether a client property of a component is a boolean and returns its value. If the client property is not set, or not a boolean, defaultValue is returned.
  - clientPropertyBooleanStrict
```
static Boolean clientPropertyBooleanStrict(JComponent c,
                                           String key,
                                           Boolean defaultValue)
```
    Checks whether a client property of a component is a Boolean and returns its value. If the client property is not set, or not a Boolean, defaultValue is returned.
  - clientPropertyInt
```
static int clientPropertyInt(JComponent c,
                             String key,
                             int defaultValue)
```
    Checks whether a client property of a component is an integer and returns its value. If the client property is not set, or not an integer, defaultValue is returned.
  - clientPropertyColor
```
static Color clientPropertyColor(JComponent c,
                                 String key,
                                 Color defaultValue)
```
    Checks whether a client property of a component is a color and returns its value. If the client property is not set, or not a color, defaultValue is returned.
  - clientProperty
```
static <T> T clientProperty(JComponent c,
                            String key,
                            T defaultValue,
                            Class<T> type)
```
    Returns the value of the specified client property if it is an instance of the specified type. Otherwise, defaultValue is returned.
    
    Since:
    
    2

Interface FlatClientProperties

Field Summary

Method Summary

Field Detail

BUTTON_TYPE

BUTTON_TYPE_SQUARE

BUTTON_TYPE_ROUND_RECT

BUTTON_TYPE_TAB

BUTTON_TYPE_HELP

BUTTON_TYPE_TOOLBAR_BUTTON

BUTTON_TYPE_BORDERLESS

SQUARE_SIZE

SELECTED_STATE

SELECTED_STATE_INDETERMINATE

STYLE

STYLE_CLASS

MINIMUM_WIDTH

MINIMUM_HEIGHT

COMPONENT_ROUND_RECT

OUTLINE

OUTLINE_ERROR

OUTLINE_WARNING

COMPONENT_FOCUS_OWNER

COMPONENT_TITLE_BAR_CAPTION

FULL_WINDOW_CONTENT_BUTTONS_PLACEHOLDER

POPUP_BORDER_CORNER_RADIUS

POPUP_ROUNDED_BORDER_WIDTH

POPUP_DROP_SHADOW_PAINTED

POPUP_FORCE_HEAVY_WEIGHT

PROGRESS_BAR_LARGE_HEIGHT

PROGRESS_BAR_SQUARE

USE_WINDOW_DECORATIONS

MENU_BAR_EMBEDDED

FULL_WINDOW_CONTENT

FULL_WINDOW_CONTENT_BUTTONS_BOUNDS

TITLE_BAR_SHOW_ICON

TITLE_BAR_SHOW_TITLE

TITLE_BAR_SHOW_ICONIFFY

TITLE_BAR_SHOW_MAXIMIZE

TITLE_BAR_SHOW_CLOSE

TITLE_BAR_BACKGROUND

TITLE_BAR_FOREGROUND

GLASS_PANE_FULL_HEIGHT

WINDOW_STYLE

WINDOW_STYLE_SMALL

SCROLL_BAR_SHOW_BUTTONS

SCROLL_PANE_SMOOTH_SCROLLING

SPLIT_PANE_EXPANDABLE_SIDE

SPLIT_PANE_EXPANDABLE_SIDE_LEFT

SPLIT_PANE_EXPANDABLE_SIDE_RIGHT

TABBED_PANE_TAB_TYPE

TABBED_PANE_TAB_TYPE_UNDERLINED

TABBED_PANE_TAB_TYPE_CARD

TABBED_PANE_SHOW_TAB_SEPARATORS

TABBED_PANE_SHOW_CONTENT_SEPARATOR

TABBED_PANE_HAS_FULL_BORDER

TABBED_PANE_HIDE_TAB_AREA_WITH_ONE_TAB

TABBED_PANE_MINIMUM_TAB_WIDTH

TABBED_PANE_MAXIMUM_TAB_WIDTH

TABBED_PANE_TAB_HEIGHT

TABBED_PANE_TAB_INSETS

TABBED_PANE_TAB_AREA_INSETS

TABBED_PANE_TAB_CLOSABLE

TABBED_PANE_TAB_CLOSE_TOOLTIPTEXT

TABBED_PANE_TAB_CLOSE_CALLBACK

TABBED_PANE_TABS_POPUP_POLICY

TABBED_PANE_SCROLL_BUTTONS_POLICY

TABBED_PANE_POLICY_NEVER

TABBED_PANE_POLICY_AS_NEEDED

TABBED_PANE_POLICY_AS_NEEDED_SINGLE

TABBED_PANE_SCROLL_BUTTONS_PLACEMENT

TABBED_PANE_PLACEMENT_BOTH

TABBED_PANE_PLACEMENT_TRAILING

TABBED_PANE_TAB_AREA_ALIGNMENT

TABBED_PANE_TAB_ALIGNMENT

TABBED_PANE_ALIGN_LEADING

TABBED_PANE_ALIGN_TRAILING

TABBED_PANE_ALIGN_CENTER

TABBED_PANE_ALIGN_FILL

TABBED_PANE_TAB_WIDTH_MODE