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Copy pathreadInputs.js
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100 lines (93 loc) · 2.65 KB
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/**
* For dual variables return an apostrophe.
*
* @param isDual A Boolean representing whether the problem is a dual.
* @return Empty string if isDual = false, string containing an
* apostrophe otherwise.
*/
function dualDash(isDual) {
if (isDual) {
return "'";
} else {
return "";
}
}
/**
* Obtain and return parameters of the problem from the form.
*
* @params None.
* @return [A, b, cj, x, xB, shouldDie]
*/
function getParameters() {
// Initialize globals
var shouldDie = false;
var objVarName = "z";
var sign = +1;
// Change objective function coefficient(s)
if (document.getElementById("changec").checked) {
var [A, b, cj, x, xB, shouldDie] = objectiveChange();
document.getElementById("changec").checked = false;
}
// Add new constraint
else if (document.getElementById("newConstr").checked) {
var [A, b, cj, x, xB, shouldDie] = newConstraint();
uncheck("newConstr");
}
// Resource change (i.e. RHS of constraint)
else if (document.getElementById("rscChg").checked) {
var [A, b, cj, x, xB, shouldDie] = resourceChange();
uncheck("rscChg");
}
// LHS constraint coefficient change
else if (document.getElementById("LHSChg").checked) {
var [A, b, cj, x, xB, shouldDie] = constrCoeffsChange();
uncheck("LHSChg");
}
// New variable
else if (document.getElementById("newVar").checked) {
var [A, b, cj, x, xB, shouldDie] = addVariable();
uncheck("newVar");
}
// Extract relevant values from form
else {
// Set globals
dualCheck = document.getElementById("isDual").checked;
if (document.getElementById("useNonMat").checked || dualCheck) {
var [A, b, cj, x, xB, shouldDie, sign, objVarName] =
readNonMatForm();
uncheck("useNonMat");
uncheck("isDual");
} else {
var [A, b, cj, x, xB] = readInputs();
}
}
// Update globals
updateAInitials(A);
// Uncheck buttons
return [A, b, cj, x, xB, shouldDie, sign, objVarName];
}
/**
* Read inputs from the form.
*
* @params None.
* @return [A, b, cj, x, xB]
*/
function readInputs() {
var A = readA();
var b = readb();
var xB = readxB();
var cj = readc();
var x = readx();
return [A, b, cj, x, xB];
}
/**
* Uncheck specified radio button if it is checked.
*
* @param name Name of the radio button's HTML element.
* @return Nothing.
*/
function uncheck(name) {
if (document.getElementById(name).checked) {
document.getElementById(name).checked = false;
}
}