Mig-infocom MiG Calendar Tutorial Manual do Utilizador descarregar pdf (Página 22)

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• Key's can be linked to other keys, and even chained. This means

that there can be one edit point for many related properties, say

colors for week days.

• Default values for every key, or key hierarchy, are mandatory.

Though they can be null.

• Keys can contain a ordered list of values. The values in the list can

have constraints, rather than the list object itself, which would be

the case for just using a ArrayList as the value.

• All value change can optionally be validated (default) against the

key's capabilities (constraints). This means that an erratic value

can never end up in the Theme.

• Both default values and capabilities (constraints) can be set

recursively on a key branch. This decreases the verboseness and

increases correctness when building themes.

• Themes can be listened on for changes to keys using the normal

Java xxxListener pattern.

• Loading and saving (serializing and deserializing) themes are

supported directly by the theme and is very simple.

• Multiple themes, even of different types, can be loaded

simultaneously and are handled by the Themes class. They are

indexed with a context String as the key and are accessible

from the whole JVM since the Themes class is a Singleton.

For more information on themes, including how to build you own

and/or extend the CalendarTheme see the javadocs for Theme.

Theme Editor – GUI for Themes

The Theme Editor is a GUI application for editing themes. All

information needed to edit the theme is included in the theme class.

Theme properties are serialized to XML for storage in a file or

database. The Theme class implementation, e.g. CalendarTheme,

needs to be in the classpath for the Theme Editor to be able to edit it.

This is because the default values and key capabilities (i.e.

constraints) of the theme is not saved in the XML properties file, but is

located in the actual xxxTheme class.

The Theme Editor can edit any type of value that it recognizes. The

most common value types already have an associated editor, but it is

very easy to write your own, you only subclass

AbstractPropertyEditor and registers it to the editor. You can

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