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var Classes = function Classes(options) {
this.shouldAddClasses = options.shouldAddClasses;
this.reset();
}
Classes.prototype.reset = function () {
this.lineNumber = null;
this.voiceNumber = null;
this.measureNumber = null;
this.measureTotalPerLine = [];
this.noteNumber = null;
}
Classes.prototype.incrLine = function () {
if (this.lineNumber === null)
this.lineNumber = 0;
else
this.lineNumber++;
this.voiceNumber = null;
this.measureNumber = null;
this.noteNumber = null;
};
Classes.prototype.incrVoice = function () {
if (this.voiceNumber === null)
this.voiceNumber = 0;
else
this.voiceNumber++;
this.measureNumber = null;
this.noteNumber = null;
};
Classes.prototype.isInMeasure = function () {
return this.measureNumber !== null;
};
Classes.prototype.newMeasure = function () {
if (this.measureNumber)
this.measureTotalPerLine[this.lineNumber] = this.measureNumber;
this.measureNumber = null;
this.noteNumber = null;
};
Classes.prototype.startMeasure = function () {
this.measureNumber = 0;
this.noteNumber = 0;
};
Classes.prototype.incrMeasure = function () {
this.measureNumber++;
this.noteNumber = 0;
};
Classes.prototype.incrNote = function () {
this.noteNumber++;
};
Classes.prototype.measureTotal = function () {
var total = 0;
for (var i = 0; i < this.lineNumber; i++)
total += this.measureTotalPerLine[i] ? this.measureTotalPerLine[i] : 0; // This can be null when non-music things are present.
if (this.measureNumber)
total += this.measureNumber;
return total;
};
Classes.prototype.getCurrent = function (c) {
return {
line: this.lineNumber,
measure: this.measureNumber,
measureTotal: this.measureTotal(),
voice: this.voiceNumber,
note: this.noteNumber
};
};
Classes.prototype.generate = function (c) {
if (!this.shouldAddClasses)
return "";
var ret = [];
if (c && c.length > 0) ret.push(c);
if (c === "abcjs-tab-number") // TODO-PER-HACK! straighten out the tablature
return ret.join(' ')
if (c === "text instrument-name")
return "abcjs-text abcjs-instrument-name"
if (this.lineNumber !== null) ret.push("l" + this.lineNumber);
if (this.measureNumber !== null) ret.push("m" + this.measureNumber);
if (this.measureNumber !== null) ret.push("mm" + this.measureTotal()); // measureNumber is null between measures so this is still the test for measureTotal
if (this.voiceNumber !== null) ret.push("v" + this.voiceNumber);
if (c && (c.indexOf('note') >= 0 || c.indexOf('rest') >= 0 || c.indexOf('lyric') >= 0) && this.noteNumber !== null) ret.push("n" + this.noteNumber);
// add a prefix to all classes that abcjs adds.
if (ret.length > 0) {
ret = ret.join(' '); // Some strings are compound classes - that is, specify more than one class in a string.
ret = ret.split(' ');
for (var i = 0; i < ret.length; i++) {
if (ret[i].indexOf('abcjs-') !== 0 && ret[i].length > 0) // if the prefix doesn't already exist and the class is not blank.
ret[i] = 'abcjs-' + ret[i];
}
}
return ret.join(' ');
};
module.exports = Classes;
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