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package javax.faces.application;

import java.io.InputStream;
import java.io.IOException;
import java.net.URL;
import java.util.Map;

import javax.faces.FacesWrapper;
import javax.faces.context.FacesContext;

/**
 * <p class="changed_added_2_0"><span class="changed_modified_2_2">Provides</span> 
 * a simple implementation of
 * {@link Resource} that can be subclassed by developers wishing to
 * provide specialized behavior to an existing {@link Resource}
 * instance.  The default implementation of all methods is to call
 * through to the wrapped {@link Resource}.</p>
 *
 * <div class="changed_added_2_0">
 *
 * <p>Usage: extend
 * this class and override {@link #getWrapped} to return the instance we
 * are wrapping.</p>
 *
 * </div>
 *
 * @since 2.0
 */
public abstract class ResourceWrapper extends Resource implements FacesWrapper<Resource> {

    /**
     * @return the instance that we are wrapping.
     */ 
    @Override
    public abstract Resource getWrapped();


    // --------------------------------------------------- Methods from Resource

    /**
     * <p class="changed_added_2_0">The default behavior of this method
     * is to call {@link Resource#getInputStream} on the wrapped {@link
     * ResourceHandler} object.</p>
     */
    @Override
    public InputStream getInputStream() throws IOException {

        return getWrapped().getInputStream();

    }


    /**
     * <p class="changed_added_2_0">The default behavior of this method
     * is to call {@link Resource#getURL} on the wrapped {@link
     * ResourceHandler} object.</p>
     */
    @Override
    public URL getURL() {

        return getWrapped().getURL();

    }


    /**
     * <p class="changed_added_2_0">The default behavior of this method
     * is to call {@link Resource#getResponseHeaders} on the wrapped {@link
     * ResourceHandler} object.</p>
     */
    @Override
    public Map<String, String> getResponseHeaders() {

        return getWrapped().getResponseHeaders();

    }


    /**
     * <p class="changed_added_2_0">The default behavior of this method
     * is to call {@link Resource#getRequestPath} on the wrapped {@link
     * ResourceHandler} object.</p>
     */
    @Override
    public String getRequestPath() {

        return getWrapped().getRequestPath();

    }


    /**
     * <p class="changed_added_2_0">The default behavior of this method
     * is to call {@link Resource#userAgentNeedsUpdate} on the wrapped {@link
     * ResourceHandler} object.</p>
     */
    @Override
    public boolean userAgentNeedsUpdate(FacesContext context) {

        return getWrapped().userAgentNeedsUpdate(context);
        
    }


    /**
     * <p class="changed_added_2_2"> The default behavior of this method is to call
     * {@link Resource#getContentType()} on the wrapped {@link ResourceHandler} object. </p>
     */
    @Override
    public String getContentType() {

        return getWrapped().getContentType();
        
    }

    
    /**
     * <p class="changed_added_2_2"> The default behavior of this method is to call
     * {@link Resource#setContentType(String)} on the wrapped {@link ResourceHandler} object. </p>
     */
    @Override
    public void setContentType(String contentType) {

        getWrapped().setContentType(contentType);

    }


    /**
     * <p class="changed_added_2_2"> The default behavior of this method is to call
     * {@link Resource#getLibraryName()} on the wrapped {@link ResourceHandler} object. </p>
     */
    @Override
    public String getLibraryName() {

        return getWrapped().getLibraryName();

    }
    
    
    /**
     * <p class="changed_added_2_2"> The default behavior of this method is to call
     * {@link Resource#setLibraryName(String)} on the wrapped {@link ResourceHandler} object. </p>
     */
    @Override
    public void setLibraryName(String libraryName) {
        
        getWrapped().setLibraryName(libraryName);
        
    }

    
    /**
     * <p class="changed_added_2_2"> The default behavior of this method is to call
     * {@link Resource#getResourceName()} on the wrapped {@link ResourceHandler} object. </p>
     */
    @Override
    public String getResourceName() {
        
        return getWrapped().getResourceName();
        
    }
    
    
    /**
     * <p class="changed_added_2_2"> The default behavior of this method is to call
     * {@link Resource#setResourceName(String)} on the wrapped {@link ResourceHandler} object. </p>
     */
    @Override
    public void setResourceName(String resourceName) {
        
        getWrapped().setResourceName(resourceName);
        
    }
        
}
