com.dimdim.ui.common.client.data.SelectList.java Source code

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Here is the source code for com.dimdim.ui.common.client.data.SelectList.java

Source

/*
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 *                                                                        *
 *               DDDDD   iii             DDDDD   iii                      *
 *               DD  DD      mm mm mmmm  DD  DD      mm mm mmmm           *
 *               DD   DD iii mmm  mm  mm DD   DD iii mmm  mm  mm          *
 *               DD   DD iii mmm  mm  mm DD   DD iii mmm  mm  mm          *
 *               DDDDDD  iii mmm  mm  mm DDDDDD  iii mmm  mm  mm          *
 *                                                                        *
 **************************************************************************
 **************************************************************************
 *                                                                        *
 * Part of the DimDim V 1.0 Codebase (http://www.dimdim.com)             *
 *                                                                        *
 * Copyright (c) 2006 Communiva Inc. All Rights Reserved.                 *
 *                                                                        *
 *                                                                        *
 * This code is licensed under the DimDim License                         *
 * For details please visit http://www.dimdim.com/license                 *
 *                                                                        *
 **************************************************************************
 */

package com.dimdim.ui.common.client.data;

import java.util.Vector;

import com.google.gwt.user.client.Window;
import com.google.gwt.json.client.JSONValue;
import com.google.gwt.json.client.JSONObject;
import com.google.gwt.json.client.JSONString;
import com.google.gwt.json.client.JSONArray;

import com.dimdim.ui.common.client.json.UIObject;

/**
 * @author Jayant Pandit
 * @email Jayant.Pandit@communiva.com
 * 
 * The select list is a single list of select list option objects and
 * is used to present drop down option in forms. The options selection
 * could be single or multiple. That is upto the form. The list itself
 * simply maintains the options.
 * 
 * The returned object must be a select list object, which has name,
 * number of entries in the list and an array of select list option
 * objects. The order of entries in the array is preserved while it
 * is presented to the user. Server must provide the array in the
 * desired display order.
 */

public class SelectList extends UIObject {
    protected String name;
    protected Vector options;

    public static SelectList readSelectList(String listName, JSONObject jsonObject) {
        String name = null;
        JSONArray options = null;
        if (jsonObject.containsKey("name")) {
            JSONString s = jsonObject.get("name").isString();
            if (s != null) {
                name = s.stringValue();
            }
        }
        if (jsonObject.containsKey("options")) {
            options = jsonObject.get("options").isArray();
        }
        if (name != null && options != null) {
            return new SelectList(name, options);
        } else {
            return new SelectList(listName, null);
        }
    }

    public SelectList(String name, JSONArray options) {
        this.name = name;
        this.options = new Vector();
        if (options != null) {
            int num = options.size();
            for (int i = 0; i < num; i++) {
                JSONValue v = options.get(i);
                JSONObject option = v.isObject();
                if (option != null) {
                    this.options.addElement(new SelectListOption(option));
                }
            }
        }
    }

    public String getName() {
        return name;
    }

    public Vector getOptions() {
        return options;
    }

    public String toString() {
        return "Select list:" + name + ", Options:" + this.options.toString();
    }
}