Replace String MediaMonkey 5 Addon

Link

Github link

Code

This isn't all of it, but the meaty part:

/*
    title: Replace String
    description: To replace specified strings in Song Title, Artist, Album, Album Artist, and Composer fields.
    author: MPG IT Consulting, Thomas F Goodwin
*/

var objTrackList;

function btnOkClick() {
    var itmRec;
    var ddDestination = qid('ddDestination').controlClass.value;
    var edtSearchStr = qid('edtSearchStr').controlClass.value;
    var edtReplaceStr = qid('edtReplaceStr').controlClass.value;

    if (ddDestination == ""){
        messageDlg('You must select a value from the drop down.', 'Error', ['btnOk'], {
        }, function (result) {
            return;
        });
    }else if (edtSearchStr == ""){
        messageDlg('You must enter a value to search for.', 'Error', ['btnOK'], {
        }, function (result) {
            return;
        });
    }
    switch(ddDestination){
        case "All":
            objTrackList.forEach(function (itmRec) {
                let str = itmRec.title;
                itmRec.title = str.replaceAll(edtSearchStr, edtReplaceStr);

                str = itmRec.artist;
                itmRec.artist = str.replaceAll(edtSearchStr, edtReplaceStr);

                str = itmRec.album;
                itmRec.album = str.replaceAll(edtSearchStr, edtReplaceStr);

                str = itmRec.albumArtist;
                itmRec.albumArtist = str.replaceAll(edtSearchStr, edtReplaceStr);

                str = itmRec.composer;
                itmRec.composer = str.replaceAll(edtSearchStr, edtReplaceStr);
            });
            break;
        case "Title":
            objTrackList.forEach(function (itmRec) {
                let str = itmRec.title;
                itmRec.title = str.replaceAll(edtSearchStr, edtReplaceStr);
            });
            break;
        case "Artist":
            objTrackList.forEach(function (itmRec) {
                let str = itmRec.artist;
                itmRec.artist = str.replaceAll(edtSearchStr, edtReplaceStr);
            });
            break;
        case "Album":
            objTrackList.forEach(function (itmRec) {
                let str = itmRec.album;
                itmRec.album = str.replaceAll(edtSearchStr, edtReplaceStr);
            });
            break;
        case "Album Artist":
            objTrackList.forEach(function (itmRec) {
                let str = itmRec.albumArtist;
                itmRec.albumArtist = str.replaceAll(edtSearchStr, edtReplaceStr);
            });
            break;
        case "Composer":
            objTrackList.forEach(function (itmRec){
                let str = itmRec.composer;
                itmRec.composer = str.replaceAll(edtSearchStr, edtReplaceStr);
            });
            break;
    }

    app.setValue('ReplaceString', {
        ddDestination: qid('ddDestination').controlClass.value,
        edtSearchStr: qid('edtSearchStr').controlClass.value,
        edtReplaceStr: qid('edtReplaceStr').controlClass.value
    });
    objTrackList.commitAsync();
    closeWindow();
}

function btnCancelClick() {}

function init(params) {
    this.title = params.title;
    this.resizeable = true;
    objTrackList = params.tracks;

    var objMem = app.getValue('ReplaceString', {
        ddDestination: qid('ddDestination').controlClass.value,
        edtSearchStr: qid('edtSearchStr').controlClass.value,
        edtReplaceStr: qid('edtReplaceStr').controlClass.value
    });

    qid('ddDestination').controlClass.value = objMem.ddDestination;
    qid('edtSearchStr').controlClass.value = objMem.edtSearchStr;
    qid('edtReplaceStr').controlClass.value = objMem.edtReplaceStr;

    if (objTrackList === undefined) {
        messageDlg(_("Select tracks to be updated"), 'Error', ['btnOK'], {
            defaultButton: 'btnOK'
        }, function (result) {
            modalResult = 0;
        });
        return;
    };

    if (objTrackList.count === 0) {
        messageDlg(_("Select tracks to be updated"), 'Error', ['btnOK'], {
            defaultButton: 'btnOK'
        }, function (result) {
            modalResult = 0;
        });
        return;
    };

    window.localListen(qid('btnOK'), 'click', btnOkClick);
    window.localListen(qid('btnCancel'), 'click', btnCancelClick, true);
}