Utils.java revision a2216e7e327b464ac03932b4add2983e9052bc79 
1package afeclient.client;
2
3import com.google.gwt.json.client.JSONArray;
4import com.google.gwt.json.client.JSONObject;
5import com.google.gwt.json.client.JSONString;
6import com.google.gwt.json.client.JSONValue;
7
8import java.util.Collection;
9import java.util.Iterator;
10import java.util.Set;
11
12/**
13 * Utility methods.
14 */
15public class Utils {
16    public static final String PLATFORM_SUFFIX = " (platform)";
17
18    public static final ClassFactory factory = new SiteClassFactory();
19
20    /**
21     * Converts a collection of Java <code>String</code>s into a <code>JSONArray
22     * </code> of <code>JSONString</code>s.
23     */
24    public static JSONArray stringsToJSON(Collection strings) {
25        JSONArray result = new JSONArray();
26        for(Iterator i = strings.iterator(); i.hasNext(); ) {
27            String s = (String) i.next();
28            result.set(result.size(), new JSONString(s));
29        }
30        return result;
31    }
32
33    /**
34     * Converts a <code>JSONArray</code> of <code>JSONStrings</code> to an
35     * array of Java <code>Strings</code>.
36     */
37    public static String[] JSONtoStrings(JSONArray strings) {
38        String[] result = new String[strings.size()];
39        for (int i = 0; i < strings.size(); i++) {
40            result[i] = strings.get(i).isString().stringValue();
41        }
42        return result;
43    }
44
45    /**
46     * Converts a <code>JSONArray</code> of <code>JSONObjects</code> to an
47     * array of Java <code>Strings</code> by grabbing the specified field from
48     * each object.
49     */
50    public static String[] JSONObjectsToStrings(JSONArray objects, String field) {
51        String[] result = new String[objects.size()];
52        for (int i = 0; i < objects.size(); i++) {
53            JSONValue fieldValue = objects.get(i).isObject().get(field);
54            result[i] = fieldValue.isString().stringValue();
55        }
56        return result;
57    }
58
59    /**
60     * Get a value out of an array of size 1.
61     * @return array[0]
62     * @throws IllegalArgumentException if the array is not of size 1
63     */
64    public static JSONValue getSingleValueFromArray(JSONArray array) {
65        if(array.size() != 1) {
66            throw new IllegalArgumentException("Array is not of size 1");
67        }
68        return array.get(0);
69    }
70
71    public static String formatStatusCounts(JSONObject counts, String joinWith) {
72        String result = "";
73        Set statusSet = counts.keySet();
74        for (Iterator i = statusSet.iterator(); i.hasNext();) {
75            String status = (String) i.next();
76            int count = (int) counts.get(status).isNumber().getValue();
77            result += Integer.toString(count) + " " + status;
78            if (i.hasNext())
79                result += joinWith;
80        }
81        return result;
82    }
83
84    public static JSONObject copyJSONObject(JSONObject source) {
85        JSONObject dest = new JSONObject();
86        for(Iterator i = source.keySet().iterator(); i.hasNext(); ) {
87            String key = (String) i.next();
88            dest.put(key, source.get(key));
89        }
90        return dest;
91    }
92
93    public static String[] getLabelStrings() {
94        StaticDataRepository staticData = StaticDataRepository.getRepository();
95        JSONArray labels = staticData.getData("labels").isArray();
96        String[] result = new String[labels.size()];
97        for (int i = 0; i < labels.size(); i++) {
98            JSONObject label = labels.get(i).isObject();
99            String name = label.get("name").isString().stringValue();
100            boolean platform = label.get("platform").isNumber().getValue() != 0;
101            if (platform) {
102                name += PLATFORM_SUFFIX;
103            }
104            result[i] = name;
105        }
106        return result;
107    }
108
109    public static String decodeLabelName(String labelName) {
110        if (labelName.endsWith(PLATFORM_SUFFIX)) {
111            int nameLength = labelName.length() - PLATFORM_SUFFIX.length();
112            return labelName.substring(0, nameLength);
113        }
114        return labelName;
115    }
116
117    public static JSONString getLockedText(JSONObject host) {
118        boolean locked = host.get("locked").isNumber().getValue() > 0;
119        return new JSONString(locked ? "Yes" : "No");
120    }
121}
122