Oracle Forms Community - Pluggable Java Components & Java Beans' library

Purpose

Here is a Forms 11g Pluggable Java Component that allows sending back to the Forms application each key pressed in a Text Item (single or multi-line).

The single-line PJC extends the VTextField class.
The multi-line PJC extends the VTextArea class.






This PJC can only work with the Forms 11g version. It won't work with any older version like 10g or 9i.


The implementation class of the single-Line Text Item

     oracle.forms.fd.KeyPressedTextItem


The implementation class of the multi-Line Text Item

     oracle.forms.fd.KeyPressedTextArea



The methods you can call



Set the Java Console logging mode (true/false)

Set_Custom_Property('BLOCK.ITEM',1,'LOG','true|false');

By default, the logging mode is set to false.

e.g.:
-- set the logging on --
Set_Custom_Property( 'BL.TEXTITEM', 1, 'LOG', 'true' ) ; 

The event fired by the PJCs


KEY_PRESSED


It is constituted by 3 parameters to get the key code, the key char and the key modifier.

To know what text item has just fired the event, ask the :SYSTEM.CURSOR_ITEM variable.

When-Custom-Item-Event:

DECLARE
  
    eventName varchar2(30) := :system.custom_item_event;
    eventValues ParamList;
    eventValueType number;
    LC$Code   varchar2(25); -- code
    LC$Char   varchar2(25); -- char
    LC$Modif  varchar2(25); -- modifier

  
BEGIN
  
   IF (eventName='KEY_PRESSED') THEN
      eventValues := get_parameter_list(:system.custom_item_event_parameters);
      get_parameter_attr(eventValues,'KEY_CODE',eventValueType, LC$Code);
      get_parameter_attr(eventValues,'KEY_CHAR',eventValueType, LC$Char);
      get_parameter_attr(eventValues,'KEY_MODIFIER',eventValueType,  LC$Modif);
     
      :BL.RESULT := :System.cursor_item || ' Key pressed:'|| LC$Code || ' (' || LC$Char||') '||' modif:'||LC$Modif ;
      Synchronize ;