org.jboss.bpm.console.client.model.JSOModel.java Source code

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Here is the source code for org.jboss.bpm.console.client.model.JSOModel.java

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/*
 * JBoss, Home of Professional Open Source.
 * Copyright 2006, Red Hat Middleware LLC, and individual contributors
 * as indicated by the @author tags. See the copyright.txt file in the
 * distribution for a full listing of individual contributors.
 *
 * This is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation; either version 2.1 of
 * the License, or (at your option) any later version.
 *
 * This software is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this software; if not, write to the Free
 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
 */
package org.jboss.bpm.console.client.model;

import com.google.gwt.core.client.JavaScriptObject;
import com.google.gwt.core.client.JsArray;
import com.google.gwt.core.client.JsArrayString;
import org.jboss.bpm.console.client.util.SimpleDateFormat;

import java.util.Date;
import java.util.HashSet;
import java.util.Set;

/**
 * Java overlay of a JavaScriptObject.
 * Borrowed from Matt Raible:
 * http://raibledesigns.com/rd/entry/json_parsing_with_javascript_overlay
 */
public abstract class JSOModel extends JavaScriptObject {

    // Overlay types always have protected, zero-arg constructors
    protected JSOModel() {
    }

    /**
     * Create an empty instance.
     *
     * @return new Object
     */
    public static native JSOModel create() /*-{
                                           return new Object();
                                           }-*/;

    /**
     * Convert a JSON encoded string into a JSOModel instance.
     * <p/>
     * Expects a JSON string structured like '{"foo":"bar","number":123}'
     *
     * @return a populated JSOModel object
     */
    public static native JSOModel fromJson(String jsonString) /*-{
                                                              return eval('(' + jsonString + ')');
                                                              }-*/;

    /**
     * Convert a JSON encoded string into an array of JSOModel instance.
     * <p/>
     * Expects a JSON string structured like '[{"foo":"bar","number":123}, {...}]'
     *
     * @return a populated JsArray
     */
    public static native JsArray<JSOModel> arrayFromJson(String jsonString) /*-{
                                                                            return eval('(' + jsonString + ')');
                                                                            }-*/;

    public final native boolean hasKey(String key) /*-{
                                                   return this[key] != undefined;
                                                   }-*/;

    public final native JsArrayString keys() /*-{
                                             var a = new Array();
                                             for (var p in this) { a.push(p); }
                                             return a;
                                             }-*/;

    @Deprecated
    public final Set<String> keySet() {
        JsArrayString array = keys();
        Set<String> set = new HashSet<String>();
        for (int i = 0; i < array.length(); i++) {
            set.add(array.get(i));
        }
        return set;
    }

    public final native String get(String key) /*-{
                                               return "" + this[key];
                                               }-*/;

    public final native String get(String key, String defaultValue) /*-{
                                                                    return this[key] ? ("" + this[key]) : defaultValue;
                                                                    }-*/;

    public final native void set(String key, String value) /*-{
                                                           this[key] = value;
                                                           }-*/;

    public final int getInt(String key) {
        return Integer.parseInt(get(key));
    }

    public final boolean getBoolean(String key) {
        return Boolean.parseBoolean(get(key));
    }

    public final native JSOModel getObject(String key) /*-{
                                                       return this[key];
                                                       }-*/;

    public final native JsArray<JSOModel> getArray(String key) /*-{
                                                               return this[key] ? this[key] : new Array();
                                                               }-*/;

    public final long getLong(String key) {
        return Long.valueOf(get(key));
    }

    public final Date getDate(String key) {
        Date result = null;
        String value = get(key);
        if (!isNull(value)) {
            SimpleDateFormat df = new SimpleDateFormat();
            result = df.parse(value);
        }

        return result;
    }

    public final Date getDate(String key, Date fallback) {
        Date date = getDate(key);
        return date != null ? date : fallback;
    }

    private final boolean isNull(String val) {
        return (val != null && "null".equals(val) || "undefined".equals(val));
    }
}