JS Helpers to use with Handlebars.java client.

Helpers.js

Handlebars.registerHelper('if_mod', function(num, val, result, options) {
    if ((num % val) === result) {
        return options.fn(this);
    } else return options.inverse(this);
});
Handlebars.registerHelper('toJSON', function(obj) {
    return JSON.stringify(obj);
});

Handlebars.registerHelper('if_notMod', function(num, val, result, options) {
    if ((num % val) !== result) {
        return options.fn(this);
    }
});

Handlebars.registerHelper('subtract', function(lval, rval) {
    return (lval - rval);
});

Handlebars.registerHelper('if_gt', function(lval, rval, options) {
    lval = parseInt(lval, 10);
    rval = parseInt(rval, 10);
    if (lval > rval) {
        return options.fn(this);
    } else return options.inverse(this);
});

Handlebars.registerHelper('toUpperCase', function(string) {
    return string.toUpperCase();
});

//TODO::Aditya: get rid of this, make it generic
Handlebars.registerHelper('geticmpid', function(pagetype, pos, id) {
    var icmpid = pagetype + "_" + pos + "_" + id;
    return icmpid;
});

Handlebars.registerHelper('if_eq', function(lvalue, rvalue, options) {
    if (arguments.length < 3)
        throw new Error("Handlebars Helper equal needs 2 parameters");
    if (lvalue != rvalue) {
        return options.inverse(this);
    } else {
        return options.fn(this);
    }
});

Handlebars.registerHelper('if_str_eq', function(lvalue, rvalue, options) {
    if (arguments.length < 3)
        throw new Error("Handlebars Helper equal needs 2 parameters");
    lvalue = lvalue.toUpperCase();
    rvalue = rvalue.toUpperCase();
    if (lvalue != rvalue) {
        return options.inverse(this);
    } else {
        return options.fn(this);
    }
});

Handlebars.registerHelper('if_notEq', function(lvalue, rvalue, options) {
    if (arguments.length < 3)
        throw new Error("Handlebars Helper equal needs 2 parameters");
    if (lvalue == rvalue) {
        return options.inverse(this);
    } else {
        return options.fn(this);
    }
});

Handlebars.registerHelper('if_str_notEq', function(lvalue, rvalue, options) {
    if (arguments.length < 3)
        throw new Error("Handlebars Helper equal needs 2 parameters");
    lvalue = lvalue.toUpperCase();
    rvalue = rvalue.toUpperCase();
    if (lvalue == rvalue) {
        return options.inverse(this);
    } else {
        return options.fn(this);
    }
});


Handlebars.registerHelper('if_all', function if_all(x, y, z, options) {
    var args = Array.prototype.slice.call(arguments);
    var i;
    if (if_all.length !== arguments.length) {
        options = args[args.length - 1];
    }
    for (i = 0; i < args.length; i++) {
        if (args[i] === "" || args[i] === null || args[i] === 0) {
            return options.inverse(this);
        }
    }
    return options.fn(this);
});