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package com.sun.faces.application.view;
import com.sun.faces.config.WebConfiguration;
/**
* Interface for working with multiple {@link com.sun.faces.application.view.ViewHandlingStrategy}
* implementations.
*/
public class ViewHandlingStrategyManager {
// The strategies associate with this instance
private volatile ViewHandlingStrategy[] strategies;
// ------------------------------------------------------------- Constructor
/**
* Be default, if {@link com.sun.faces.config.WebConfiguration.BooleanWebContextInitParameter#DisableFaceletJSFViewHandler}
* isn't enabled, the strategies available (in order) will be {@link FaceletViewHandlingStrategy}
* and {@link com.sun.faces.application.view.JspViewHandlingStrategy}. Otherwise, only the
* {@link com.sun.faces.application.view.JspViewHandlingStrategy} will be available.
*/
public ViewHandlingStrategyManager() {
WebConfiguration webConfig = WebConfiguration.getInstance();
boolean pdlDisabled = webConfig
.isOptionEnabled(WebConfiguration.BooleanWebContextInitParameter.DisableFaceletJSFViewHandler);
strategies = ((pdlDisabled)
? new ViewHandlingStrategy[] { new JspViewHandlingStrategy() }
: new ViewHandlingStrategy[] { new FaceletViewHandlingStrategy(),
new JspViewHandlingStrategy() });
}
// ---------------------------------------------------------- Public Methods
/**
*
* Iterate through the available {@link com.sun.faces.application.view.ViewHandlingStrategy}
* implementations. The first one to return true from {@link com.sun.faces.application.view.ViewHandlingStrategy#handlesViewId(String)}
* will be the {@link com.sun.faces.application.view.ViewHandlingStrategy} returned.
*
*
* @param viewId the viewId to match a {@link com.sun.faces.application.view.ViewHandlingStrategy} to
*
* @throws ViewHandlingStrategyNotFoundException if no match is found.
*
* @return a {@link com.sun.faces.application.view.ViewHandlingStrategy} for
* the specifed viewId
*/
public ViewHandlingStrategy getStrategy(String viewId) {
for (ViewHandlingStrategy strategy : strategies) {
if (strategy.handlesViewId(viewId)) {
return strategy;
}
}
throw new ViewHandlingStrategyNotFoundException();
}
/**
* @return the currently registered {@link com.sun.faces.application.view.ViewHandlingStrategy}
* implementations.
*/
public ViewHandlingStrategy[] getViewHandlingStrategies() {
return strategies.clone();
}
/**
* Update the {@link com.sun.faces.application.view.ViewHandlingStrategy} implementations
* to be applied when processing JSF requests.
* @param stratagies the new view handling strategies
*/
public synchronized void setViewHandlingStrategies(ViewHandlingStrategy[] stratagies) {
this.strategies = stratagies.clone();
}
}