Class BasicHeaderUI
Header
UI. PENDING JW: This implementation is unusual in that it does not keep a reference to the component it controls. Typically, such is only the case if the ui is shared between instances. Historical? A consequence is that the un/install methods need to carry the header as parameter. Which looks funny when at the same time the children of the header are instance fields in this. Should think about cleanup: either get rid off the instance fields here, or reference the header and remove the param (would break subclasses).
PENDING JW: keys for uidefaults are inconsistent - most have prefix "JXHeader." while defaultIcon has prefix "Header."
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Nested Class Summary
Nested Classes -
Field Summary
FieldsModifier and TypeFieldDescriptionprivate HierarchyBoundsListener
protected BasicHeaderUI.DescriptionPane
private Color
private Color
protected JLabel
private static final Logger
private PropertyChangeListener
protected JLabel
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Constructor Summary
Constructors -
Method Summary
Modifier and TypeMethodDescriptionprotected Painter
static ComponentUI
Returns an instance of the UI delegate for the specified component.private Color
getAsNotUIResource
(Color color) Returns a Color based on the param which is not of type UIResource.private Font
getAsNotUIResource
(Font font) Returns a Font based on the param which is not of type UIResource.protected void
installComponentDefaults
(JXHeader header) Configures the component default properties from the given header.protected void
installComponents
(JXHeader header) Creates, configures, adds contained components.protected void
installDefaults
(JXHeader header) Installs default header properties.protected void
installListeners
(JXHeader header) void
Configures the specified component appropriate for the look and feel.private boolean
isUIInstallable
(Object property) Checks and returns whether the given property should be replaced by the UI's default value.protected void
onPropertyChange
(JXHeader h, String propertyName, Object oldValue, Object newValue) private void
protected void
uninstallComponentDefaults
(JXHeader header) Uninstalls component defaults.protected void
uninstallComponents
(JXHeader header) Unconfigures, removes and nulls contained components.protected void
Uninstalls the given header's default properties.protected void
void
Reverses configuration which was done on the specified component duringinstallUI
.Methods inherited from class javax.swing.plaf.ComponentUI
contains, getAccessibleChild, getAccessibleChildrenCount, getBaseline, getBaselineResizeBehavior, getMaximumSize, getMinimumSize, getPreferredSize, paint, update
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Field Details
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LOG
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titleLabel
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descriptionPane
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imagePanel
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propListener
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boundsListener
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gradientLightColor
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gradientDarkColor
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Constructor Details
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BasicHeaderUI
public BasicHeaderUI()Creates a new instance of BasicHeaderUI
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Method Details
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createUI
Returns an instance of the UI delegate for the specified component. Each subclass must provide its own staticcreateUI
method that returns an instance of that UI delegate subclass. If the UI delegate subclass is stateless, it may return an instance that is shared by multiple components. If the UI delegate is stateful, then it should return a new instance per component. The default implementation of this method throws an error, as it should never be invoked. -
installUI
Configures the specified component appropriate for the look and feel. This method is invoked when theComponentUI
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:- Install any 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.
- Install a
LayoutManager
on the component if necessary. - Create/add any required sub-components to the component.
- Create/install event listeners on the component.
- Create/install a
PropertyChangeListener
on the component in order to detect and respond to component property changes appropriately. - Install keyboard UI (mnemonics, traversal, etc.) on the component.
- Initialize any appropriate instance data.
- Overrides:
installUI
in classComponentUI
- Parameters:
c
- the component where this UI delegate is being installed- See Also:
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uninstallUI
Reverses configuration which was done on the specified component duringinstallUI
. This method is invoked when thisUIComponent
instance is being removed as the UI delegate for the specified component. This method should undo the configuration performed ininstallUI
, being careful to leave theJComponent
instance in a clean state (no extraneous listeners, look-and-feel-specific property objects, etc.). This should include the following:- Remove any UI-set borders from the component.
- Remove any UI-set layout managers on the component.
- Remove any UI-added sub-components from the component.
- Remove any UI-added event/property listeners from the component.
- Remove any UI-installed keyboard UI from the component.
- Nullify any allocated instance data objects to allow for GC.
- Overrides:
uninstallUI
in classComponentUI
- 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:
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installDefaults
Installs default header properties.NOTE: this method is called before the children are created, so must not try to access any of those!.
- Parameters:
header
- the header to install.
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uninstallDefaults
Uninstalls the given header's default properties. This implementation does nothing.- Parameters:
h
- the header to ininstall the properties from.
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installComponents
Creates, configures, adds contained components. PRE: header's default properties must be set before calling this.- Parameters:
header
- the header to install the components into.
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uninstallComponents
Unconfigures, removes and nulls contained components.- Parameters:
header
- the header to install the components into.
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installComponentDefaults
Configures the component default properties from the given header.- Parameters:
header
- the header to install the components into.
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getAsNotUIResource
Returns a Font based on the param which is not of type UIResource.- Parameters:
font
- the base font- Returns:
- a font not of type UIResource, may be null.
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getAsNotUIResource
Returns a Color based on the param which is not of type UIResource.- Parameters:
color
- the base color- Returns:
- a color not of type UIResource, may be null.
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isUIInstallable
Checks and returns whether the given property should be replaced by the UI's default value.PENDING JW: move as utility method ... where?
- Parameters:
property
- the property to check.- Returns:
- true if the given property should be replaced by the UI#s default value, false otherwise.
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uninstallComponentDefaults
Uninstalls component defaults. This implementation does nothing.- Parameters:
header
- the header to uninstall from.
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installListeners
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uninstallListeners
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onPropertyChange
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resetLayout
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createBackgroundPainter
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