Changes between Version 36 and Version 37 of PRO_LIB_CORE_TUTORIAL_NEW
- Timestamp:
- 07/02/09 20:21:17 (16 years ago)
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PRO_LIB_CORE_TUTORIAL_NEW
v36 v37 21 21 * You can create a ProObject by implementing the ProObject interface or by using the default implementation BaseProObject 22 22 * You can declare Properties inside the ProObject with Java methods which return a Prop<T> (later you'll get what is this), where T is a concrete class like Integer. The method executes some logic and returns the actual Property. 23 * There are different kind of Properties, so inside these methods you can provide logic which returns the desired kind of Property.23 * There are different kinds of Properties, so inside these methods you can provide logic which returns the desired kind of Property. 24 24 25 25 === Example === … … 146 146 ==== Single Properties (BLUE) ==== 147 147 These are classes which extend ObjectProperty<T> and thus inherit its capabilities, though they implement specific behavior for specific purposes. 148 * '''ValueProperty<T>''': 148 * '''ValueProperty<T>''':[[BR]] 149 149 This Property is the equvalent to a Java field of type T which allows getting and setting a value. The different thing is that any Property A which depends on a ValueProperty B gets notified when B changes and thus A can update accordingly. Sample usage was already shown in the rectangle example above: 150 150 {{{ … … 157 157 So, this is actually a Java method which returns a RwProp of Integer. The previously awkward return statement is now more clear: it instructs the ProBean of the ProObject to create a new ValueProperty with the name ''width'' which has a value of type ''Integer''. Other Properties are created in a similar fashion as is described later.[[BR]] 158 158 Thus, when you want to set or get the value of this Property you just use the set() and get() methods like in the demoCode() method above. 159 * '''FinalProperty<T>''': 159 * '''FinalProperty<T>''':[[BR]] 160 160 This Property is somewhat analogical to the '''final''' fields in Java. You can set the value of a FinalProperty only once, though not it's not mandatory to do it in the constructor of the ProObject.[[BR]] 161 161 Such Properties are intended to be used in cases where some user action leads to set the value of a given Property exactly once. This is different than ''const'' AutoProperties as described below. 162 * '''AutoProperty<T>''': 162 * '''AutoProperty<T>''':[[BR]] 163 163 This Property is one of the most commonly used and convenient Properties the ProLib offers. 164 164
