[Jsynthlib-devel] SysexWidget.IParamModel/ISender interface

[Hiroo H. <hir...@co...>]

I'd like to propose two inner interfaces for SysexWidget.

1. IParamModel
    public interface IParamModel {
        void set(int value);
        int get();
    }

The current ParamModel class depends on Patch class which is an
implementation of IPatch.  It cannot be used for other implementation of
IPatch.  By introducing this interface, SysexWidget and its subclasses
can support any implementation of IPatch.

2. ISender
    public interface ISender {
        void send(IPatchDriver driver, int value);
    }

Now SysexSender.generate() returns a byte array and
SysexWidget.sendSysex() converts the byte array into a SysexMessage and
send it to MIDI port.  After my proposal SysexWidget.sendSysex() will
just call ISender.send() method and send() method does all of the job.

The main job of SysexSender class becomes sending Sysex Message.  Easy
to understand, isn't it?  More importantly a sender has more flexibility. 
It can send any message, short message, multiple message, and mix of
sysex and short message.

For example WaldorfPulseSingleEditor.WaldorfPulseSender (the only sender
which sends short message, I could find.) becomes as follows;

    class WaldorfPulseSender implements SysexWidget.ISender {
        private int param;
        private int mult;

        public WaldorfPulseSender(int param) {
            this(param, 1);
        }

        public WaldorfPulseSender(int param, int multiplier) {
            this.param = param;
            this.mult = multiplier;
        }

        public void send(IPatchDriver driver, int value) {
            ShortMessage msg = new ShortMessage();
            try {
                msg.setMessage(ShortMessage.CONTROL_CHANGE,
                        driver.getChannel() - 1, param, value * mult);
                driver.send(msg);
            } catch (InvalidMidiDataException e) {
                ErrorMsg.reportStatus(e);
            }
        }
    }

This proposal requires little changes of SysexWidget, its subclasses in
core, SysexSender, and ParamModel.  No change for synthdrivers.  I'm
ready to commit them.

Rib, are you changing these files for your XML driver?  If so, I'll
check-in my fix after your check-in.
-- 
Hiroo Hayashi