ubuntu-ui-toolkit-examples 0.1.46+14.04.20140408.1-0ubuntu1 / usr / lib / ubuntu-ui-toolkit / examples / unit-converter / conversion.js

/*
 * Copyright 2012 Canonical Ltd.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation; version 3.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

.pragma library

// the function converts the value entered in the input to the other units
function convert(input, converter, index) {
    if (input && input.text.length <= 0)
        return;
    var baseValue = parseFloat(input.text) / parseFloat(converter.model[index].rate);
    if (baseValue <= 0.0)
        return;
    for (var i = 0; i < converter.count; i++) {
        if (converter.itemAt(i)) {
            var inputItem = converter.itemAt(i).children[1]
            if (inputItem !== input) {
                inputItem.text = parseFloat(converter.model[i].rate) * baseValue;
            }
        }
    }
}

// the function clears every input field data
function clear(converter, except) {
    for (var i = 0; i < converter.count; i++) {
        if (!except || (except && except !== converter.itemAt(i).children[1]))
            converter.itemAt(i).children[1].text = "0.0";
    }
}