org.springframework.ui.context.support

Class DelegatingThemeSource

java.lang.Object

org.springframework.ui.context.support.DelegatingThemeSource

All Implemented Interfaces:

HierarchicalThemeSource, ThemeSource

public class DelegatingThemeSource
extends Object
implements HierarchicalThemeSource

Empty ThemeSource that delegates all calls to the parent ThemeSource. If no parent is available, it simply won't resolve any theme.

Used as placeholder by UiApplicationContextUtils, if a context doesn't define its own ThemeSource. Not intended for direct use in applications.

Since:

1.2.4

Author:

Juergen Hoeller

See Also:

UiApplicationContextUtils

Constructor Summary

Constructors

Constructor and Description
DelegatingThemeSource()

Method Summary

Modifier and Type	Method and Description
ThemeSource	getParentThemeSource() Return the parent of this ThemeSource, or null if none.
Theme	getTheme(String themeName) Return the Theme instance for the given theme name.
void	setParentThemeSource(ThemeSource parentThemeSource) Set the parent that will be used to try to resolve theme messages that this object can't resolve.

Methods inherited from class java.lang.Object

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

Constructor Detail

DelegatingThemeSource

public DelegatingThemeSource()

Method Detail

setParentThemeSource

public void setParentThemeSource(@Nullable
                                 ThemeSource parentThemeSource)

Description copied from interface: HierarchicalThemeSource

Set the parent that will be used to try to resolve theme messages that this object can't resolve.

Specified by:

setParentThemeSource in interface HierarchicalThemeSource

Parameters:

parentThemeSource - the parent ThemeSource that will be used to resolve messages that this object can't resolve. May be null, in which case no further resolution is possible.

getParentThemeSource

@Nullable
public ThemeSource getParentThemeSource()

Description copied from interface: HierarchicalThemeSource

Return the parent of this ThemeSource, or null if none.

Specified by:

getParentThemeSource in interface HierarchicalThemeSource

getTheme

@Nullable
public Theme getTheme(String themeName)

Description copied from interface: ThemeSource

Return the Theme instance for the given theme name.

The returned Theme will resolve theme-specific messages, codes, file paths, etc (e.g. CSS and image files in a web environment).

Specified by:

getTheme in interface ThemeSource

Parameters:

themeName - the name of the theme

Returns:

the corresponding Theme, or null if none defined. Note that, by convention, a ThemeSource should at least be able to return a default Theme for the default theme name "theme" but may also return default Themes for other theme names.

See Also:

AbstractThemeResolver.ORIGINAL_DEFAULT_THEME_NAME