Meta.java

   1 package be.nikiroo.utils.resources;
   2
   3 import java.lang.annotation.ElementType;
   4 import java.lang.annotation.Retention;
   5 import java.lang.annotation.RetentionPolicy;
   6 import java.lang.annotation.Target;
   7
   8 /**
   9  * Annotation used to give some information about the translation keys, so the
  10  * translation .properties file can be created programmatically.
  11  *
  12  * @author niki
  13  */
  14 @Retention(RetentionPolicy.RUNTIME)
  15 @Target(ElementType.FIELD)
  16 public @interface Meta {
  17         /**
  18          * The format of an item (the values it is expected to be of).
  19          * <p>
  20          * Note that the INI file can contain arbitrary data, but it is expected to
  21          * be valid.
  22          *
  23          * @author niki
  24          */
  25         public enum Format {
  26                 /** An integer value, can be negative. */
  27                 INT,
  28                 /** true or false. */
  29                 BOOLEAN,
  30                 /** Any text String. */
  31                 STRING,
  32                 /** A password field. */
  33                 PASSWORD,
  34                 /** A colour (either by name or #rrggbb or #aarrggbb). */
  35                 COLOR,
  36                 /** A locale code (e.g., fr-BE, en-GB, es...). */
  37                 LOCALE,
  38                 /** A path to a file. */
  39                 FILE,
  40                 /** A path to a directory. */
  41                 DIRECTORY,
  42                 /** A fixed list of values (see {@link Meta#list()} for the values). */
  43                 FIXED_LIST,
  44                 /**
  45                  * A fixed list of values (see {@link Meta#list()} for the values) OR a
  46                  * custom String value (basically, a {@link Format#FIXED_LIST} with an
  47                  * option to enter a not accounted for value).
  48                  */
  49                 COMBO_LIST,
  50         }
  51
  52         /**
  53          * A description for this item: what it is or does, how to explain that item
  54          * to the user including what can be used here (i.e., %s = file name, %d =
  55          * file size...).
  56          * <p>
  57          * For group, the first line ('\\n'-separated) will be used as a title while
  58          * the rest will be the description.
  59          *
  60          * @return what it is
  61          */
  62         String description() default "";
  63
  64         /**
  65          * This item is only used as a group, not as an option.
  66          * <p>
  67          * For instance, you could have LANGUAGE_CODE as a group for which you won't
  68          * use the value in the program, and LANGUAGE_CODE_FR, LANGUAGE_CODE_EN
  69          * inside for which the value must be set.
  70          *
  71          * @return TRUE if it is a group
  72          */
  73         boolean group() default false;
  74
  75         /**
  76          * What format should/must this key be in.
  77          *
  78          * @return the format it is in
  79          */
  80         Format format() default Format.STRING;
  81
  82         /**
  83          * The list of fixed values this item can be (either for
  84          * {@link Format#FIXED_LIST} or {@link Format#COMBO_LIST}).
  85          *
  86          * @return the list of values
  87          */
  88         String[] list() default {};
  89
  90         /**
  91          * This item can be left unspecified.
  92          *
  93          * @return TRUE if it can
  94          */
  95         boolean nullable() default true;
  96
  97         /**
  98          * The default value of this item.
  99          *
 100          * @return the value
 101          */
 102         String def() default "";
 103
 104         /**
 105          * This item is a comma-separated list of values instead of a single value.
 106          * <p>
 107          * The list items are separated by a comma, each surrounded by
 108          * double-quotes, with backslashes and double-quotes escaped by a backslash.
 109          * <p>
 110          * Example: <tt>"un", "deux"</tt>
 111          *
 112          * @return TRUE if it is
 113          */
 114         boolean array() default false;
 115
 116         /**
 117          * @deprecated add the info into the description, as only the description
 118          *             will be translated.
 119          */
 120         @Deprecated
 121         String info() default "";
 122 }