AbstractCommand.java

/*
 * Copyright 2008 Jeff Dwyer
 * 
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not
 * use this file except in compliance with the License. You may obtain a copy of
 * the License at
 * 
 * http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 * License for the specific language governing permissions and limitations under
 * the License.
 */
package com.apress.progwt.client.domain.commands;

import java.io.Serializable;
import java.util.ArrayList;
import java.util.List;

import com.allen_sauer.gwt.log.client.Log;
import com.apress.progwt.client.college.gui.ext.JSUtil;
import com.apress.progwt.client.domain.Loadable;
import com.apress.progwt.client.domain.User;

/**
 * Store
 * 
 * @author Jeff Dwyer
 * 
 */
public abstract class AbstractCommand implements Serializable,
        SiteCommand, CommandService {

    private transient List<Object> objects = new ArrayList<Object>();

    private String token;

    public AbstractCommand() {

    }

    public AbstractCommand(Object... arguments) {

        for (Object o : arguments) {
            objects.add(o);
        }
    }

    public <T> T get(Class<T> clazz, long id) {
        Log.debug("Load " + clazz + " " + id);
        for (Object o : objects) {
            if (o != null) {
                Log.debug("O: " + o + " " + o.getClass());
            } else {
                Log.debug("O: null");
            }
            if (o != null && o.getClass() == clazz) {

                Loadable l = (Loadable) o;
                Log.debug("l: " + l + " " + l.getId());
                if (l.getId() == id) {
                    return (T) o;
                }
            }
        }
        return null;
    }

    public void save(Loadable o) {
        // do nothing
    }

    public void delete(Loadable loadable) {
        loadable = null;
    }

    public String getToken() {
        return token;
    }

    public void setToken(String token) {
        this.token = token;
    }

    /**
     * Invoked on client side. Empty implementation.
     */
    public void assertUserIsAuthenticated(User toCheck) {
        // do nothing.
    }

    /**
     * Invoked on client side. Empty impl.
     */
    public String filterHTML(String input) {
        return input;
    }

    /**
     * Invoked on client side. Empty impl.
     */
    public String escapeHtml(String string) {
        return JSUtil.escape(string);
    }

    protected void escapeStringList(CommandService commandService,
            List<String> stringList) {

        for (int i = 0; i < stringList.size(); i++) {

            stringList.set(i, commandService
                    .escapeHtml(stringList.get(i)));
        }
    }
}