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attaching event with "ParameterTypeCategory"

User: "mansoorbahrian"
mansoorbahrian
New Altair Community Member
Updated by Jocelyn
Hello Everyone,


I am developing an operator for RapidMiner.

My question is how to attach an event the dropdownbox  (i.e. ParameterTypeCategory), because I want to enable or disable few textfields on basis of selection.

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    User: "land"
    land
    New Altair Community Member
    Hi,
    you might attach Conditions on parameters, which will hide them if the condition is not met. For example this code: 
    		
    type = new ParameterTypeCategory(PARAMETER_IO_OBJECT, "The class of the object(s) which should be checked for existance.", objectArray, 0);
    type.registerDependencyCondition(new EqualStringCondition(this, PARAMETER_CONDITION_TYPE, true, CONDITION_INPUT_EXISTS));
    type.setExpert(false);
    types.add(type);
    It will create a parameter which will only be shown if the parameter CONDITION_TYPE is equal to CONDITION_INPUT_EXISTS.

    Greetings,
      Sebastian
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