package cvexample.controller;

import java.util.*;

/**
 * The internal representation of a view from the views.xml file
 */
public class View {  
    /** the containers in this view, mapped by name */
    private HashMap containers;
    
    /** the template for this view */
    private String template;
    
    /**
     * the internal representation of a container in a view
     */
    class Container {
        /** the includes in this container, mapped by name */
        private HashMap includes;
        
        Container() {
            includes = new HashMap();
        }
        
        /**
         * Add an include to this container
         */
        void addInclude(String name, String url) {
            includes.put(name, url);
        }
    
        /**
         * Get the url associated with a given include
         */
        String getUrl(String name) {
            return (String) includes.get(name);
        }
    }
    
    /**
     * Create a new view with the given template
     */
    public View(String template) {
        containers = new HashMap();
        this.template = template;
    }
    
    /**
     * Add an include to this view, given a container within the view,
     * the name of the include and the associated url
     */
    public void addInclude(String container, String name, String url) {
        // find the container
        Container c = (Container) containers.get(container);
        
        // if the container doesn't exist, create it
        if (c == null) {
            c = new Container();
            containers.put(container, c);
        }
        
        // add the include to the container
        c.addInclude(name, url);
    }
    
    /**
     * Get the url associated with a named view
     */
    public String getUrl(String container, String name) {
        // find the container
        Container c = (Container) containers.get(container);
        if (c == null) {
            return null;
        }
        
        // get the url
        return c.getUrl(name);
    }
    
    /**
     * Determine if this view has a container with the given name
     */
    public boolean hasContainer(String container) {
        return containers.containsKey(container);
    }
    
    /**
     * Get the template associated with this view
     */
    public String getTemplate() {
        return template;
    }
}