Calculator Java Bean

Purpose

Here is a Java Bean from Jesus Vallejo that displays a calculator.

It cannot run with the JInitiator and needs the Sun Java plug-in.

The implementation class of the Bean Item

     oracle.forms.jvr.Calculator

The Java code

     Calculator.java     CalculatorOperations.java

The methods you can call

• set the frame title

Set_Custom_Property('BL.BEAN',1, 'SET_TITULO','Calculator');

• Set the label of the button that returns the value of the calculator

Set_Custom_Property('BL.BEAN',1, 'SET_BOTON','Get Value');

• Set the frame position (x,y)

Set_Custom_Property('BL.BEAN',1, 'SET_POSICION','300,150');

• Set the initial value
  

Set_Custom_Property('BL.BEAN',1, 'SET_VALORINICIAL','');

• Set the calculator mode (E- Standard / C-Scientific) 

Set_Custom_Property('BL.BEAN',1, 'SET_MODO','');

• Show the calculator
  

Set_Custom_Property('BL.BEAN',1, 'SHOW','');

The event sent by the Java Bean

CALCULATOR_EVENT

This event tells Forms that a date has been chosen in the calculator.

You can get it in a WHEN-CUSTOM-ITEM-EVENT event:

DECLARE

    eventName varchar2(30) := :system.custom_item_event;

    eventValues ParamList;

    eventValueType number;

    valor     varchar2(256); -- Calculator Value

BEGIN

   IF (eventName='CALCULATOR_EVENT') THEN

      eventValues := get_parameter_list(:system.custom_item_event_parameters);

      get_parameter_attr(eventValues,'CALCULATOR_VALOR',eventValueType, valor);

      Clear_Message;

      Message('Calculator Value: '|| valor );

      Synchronize ;           

   END IF;  

END;

The sample dialog

     . Download the Calculator.zip file
     . Unzip the Calculator.zip file
     . Copy the Calculator.jar file in your /forms/java/ folder

     . Add it to the archive tag of the /forms/server/formsweb.cfg file
     . Open the Calculator.fmb module (Oracle Forms 10.1.2)
     . Compile all and run the module

     The jar file must be signed
     The jar file provided with the .zip file is already signed

For any question concerning this bean, send a mail to Jesus at vallejo.jesus@gmail.com.