Sample Code
The following code is extracted from the CarambolaBreadCrumbDelegate which generates the breadcrumbs for multiple carambola examples or components.
public class CarambolaBreadCrumbDelegate implements BreadCrumbDelegate {



private static final Logger log = LogR.getLoggerInternal(CarambolaBreadCrumbDelegate.class.getName());



@Override

public boolean canHandle(Persistable contextObject, WTContainer container, String url) throws WTException {

return (url.contains("componentCatalog") || url.contains("carambola") || url.contains("apiDocs")

|| url.contains("jsapi") || url.contains("tools") || url.contains("testClients"));

}



@Override

public AbstractBreadCrumbGenerator getGenerator(Persistable p, WTContainer container, String url)

throws WTException {

return new CarambolaCrumbGenerator(p, container, url);

}



public class CarambolaCrumbGenerator extends AbstractBreadCrumbGenerator {



BreadCrumbArray breadCrumbs;

String carambolaURL = "";

public CarambolaCrumbGenerator(Persistable p, WTContainer container, String url) throws WTException {

this.carambolaURL = url;

}



/**

* NOTE: all "main" component pages (treeComponent.jsp, splitPaneComponent.jsp, etc) are covered by the second

* if statement so it never falls through below to also add a breadcrumb to the page itself.

*/

@Override

public BreadCrumbArray getBreadCrumbs() {

breadCrumbs = new BreadCrumbArray();

try {

if (carambolaURL.contains("componentCatalog/componentCatalog")) {

return breadCrumbs;

} else if (carambolaURL.contains("componentCatalog") && carambolaURL.contains("Component.jsp")) {

breadCrumbs.add(CustomizationPage.Page.CATALOG.getFullLink(), CustomizationPage.Page.CATALOG.getDisplayName());

} else if (carambolaURL.contains("jsapi")) {

//two requests come through here on the jsapi page, both having "jsapi" in the url

breadCrumbs.add(CustomizationPage.Page.API_DOCS.getLink(),

CustomizationPage.Page.API_DOCS.getDisplayName());

}

else if (carambolaURL.contains("testClients") &&

!carambolaURL.contains("testClients/testClients")) { // "testClients" is the main test clients

// page

breadCrumbs.add(CustomizationPage.Page.TEST_CLIENTS.getLink(),

CustomizationPage.Page.TEST_CLIENTS.getDisplayName());

} else if (carambolaURL.contains("testClients/tags")) {

breadCrumbs.add(CustomizationPage.Page.TEST_CLIENTS.getLink(),

CustomizationPage.Page.TEST_CLIENTS.getDisplayName());

breadCrumbs.add(CustomizationPage.Page.JCA_TAGS.getLink(),

CustomizationPage.Page.JCA_TAGS.getDisplayName());

} else if ((carambolaURL.contains("/tools/") || carambolaURL.contains("tools"))

&& !carambolaURL.contains("/tools/list")) { // do not show crumb on main Tools page

breadCrumbs.add(CustomizationPage.Page.TOOLS.getLink(),

CustomizationPage.Page.TOOLS.getDisplayName());

} else if (carambolaURL.contains("carambola.mvc.table")) {

addComponentCatalogBreadCrumbs(CustomizationPage.Page.TABLE);

} else if (carambolaURL.contains("carambola.mvc.tree")) {

addComponentCatalogBreadCrumbs(CustomizationPage.Page.TREE);

} else if (carambolaURL.contains("infoPage")) {

addComponentCatalogBreadCrumbs(CustomizationPage.Page.INFO_PAGE);

} else if (carambolaURL.contains("attributePanel")) {

addComponentCatalogBreadCrumbs(CustomizationPage.Page.ATT_PANEL);

} else if (carambolaURL.contains("twoPanePanels")) {

addComponentCatalogBreadCrumbs(CustomizationPage.Page.SPLIT_PANE);

} else if (carambolaURL.contains("menu")) {

addComponentCatalogBreadCrumbs(CustomizationPage.Page.MENU);

} else if (carambolaURL.contains("breadCrumb")) {

addComponentCatalogBreadCrumbs(CustomizationPage.Page.BREAD_CRUMB);

} else if (carambolaURL.contains("miniInfoNavigator")) {

addComponentCatalogBreadCrumbs(CustomizationPage.Page.MINI_NAV);

} else if (carambolaURL.contains("picker")) {

addComponentCatalogBreadCrumbs(CustomizationPage.Page.PICKER);

} else if (carambolaURL.contains("customization/examples/paste")) {

//link to a wizard example on a jsp. One-off case

addComponentCatalogBreadCrumbs(CustomizationPage.Page.WIZARD);

} else if (carambolaURL.contains("apiDocs") && carambolaURL.contains("javadocInternal")) {

breadCrumbs.add(CustomizationPage.Page.API_DOCS.getLink(),

CustomizationPage.Page.API_DOCS.getDisplayName());

}

else if (carambolaURL.contains("graphicalAttrs")) {

addComponentCatalogBreadCrumbs(CustomizationPage.Page.GRAPHICAL_ATTRIBUTES);

}

} catch (WTException e) {

log.warn("Couldn't create carambola crumb.", e);

}

return breadCrumbs;

}



private void addComponentCatalogBreadCrumbs(CustomizationPage.Page component) throws WTException {

breadCrumbs.add(CustomizationPage.Page.CATALOG.getFullLink(), CustomizationPage.Page.CATALOG.getDisplayName());

breadCrumbs.add(component.getFullLink(), component.getDisplayName());

}

}



}
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