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/* ************************************************************************
qooxdoo - the new era of web development
http://qooxdoo.org
Copyright:
2004-2007 1&1 Internet AG, Germany, http://www.1and1.org
License:
LGPL: http://www.gnu.org/licenses/lgpl.html
EPL: http://www.eclipse.org/org/documents/epl-v10.php
See the LICENSE file in the project's top-level directory for details.
Authors:
* Sebastian Werner (wpbasti)
* Andreas Ecker (ecker)
************************************************************************ */
/* ************************************************************************
************************************************************************ */
/**
* Collection of methods to compare two values.
*/
qx.OO.defineClass("qx.util.Compare");
/**
* Compare two Strings
*
* @param a {String} first value
* @param b {String} second value
*
* @return {Number}
* 0 if both values are equal
* a number > 0 if the first value if greater than the second one
* a value < 0 otherwise
*/
qx.util.Compare.byString = function(a, b) {
return a==b ? 0 : a > b ? 1 : -1;
};
/**
* Compare two Strings ignoring the letter case.
*
* @param a {String} first value
* @param b {String} second value
*
* @return {Number}
* 0 if both values are equal
* a number > 0 if the first value if greater than the second one
* a value < 0 otherwise
*/
qx.util.Compare.byStringCaseInsensitive = function(a, b) {
return qx.util.Compare.byString(a.toLowerCase(), b.toLowerCase());
};
/**
* Compare two Strings but first convert umlauts to an ascii character.
*
* @param a {String} first value
* @param b {String} second value
*
* @return {Number}
* 0 if both values are equal
* a number > 0 if the first value if greater than the second one
* a value < 0 otherwise
*/
qx.util.Compare.byStringUmlautsShort = function(a, b) {
return qx.util.Compare.byString(qx.util.Normalization.umlautsShort(a), qx.util.Normalization.umlautsShort(b));
};
/**
* Compare two Strings but first convert umlauts to an ascii character and ignore letter case.
*
* @param a {String} first value
* @param b {String} second value
*
* @return {Number}
* 0 if both values are equal
* a number > 0 if the first value if greater than the second one
* a value < 0 otherwise
*/
qx.util.Compare.byStringUmlautsShortCaseInsensitive = function(a, b) {
return qx.util.Compare.byString(qx.util.Normalization.umlautsShort(a).toLowerCase(), qx.util.Normalization.umlautsShort(b).toLowerCase());
};
/**
* Compare two Strings but first convert umlauts to ascii characters.
*
* @param a {String} first value
* @param b {String} second value
*
* @return {Number}
* 0 if both values are equal
* a number > 0 if the first value if greater than the second one
* a value < 0 otherwise
*/
qx.util.Compare.byStringUmlautsLong = function(a, b) {
return qx.util.Compare.byString(qx.util.Normalization.umlautsLong(a), qx.util.Normalization.umlautsLong(b));
};
/**
* Compare two Strings but first convert umlauts to ascii characters and ignore letter case.
*
* @param a {String} first value
* @param b {String} second value
*
* @return {Number}
* 0 if both values are equal
* a number > 0 if the first value if greater than the second one
* a value < 0 otherwise
*/
qx.util.Compare.byStringUmlautsLongCaseInsensitive = function(a, b) {
return qx.util.Compare.byString(qx.util.Normalization.umlautsLong(a).toLowerCase(), qx.util.Normalization.umlautsLong(b).toLowerCase());
};
/**
* Compare two Float numbers.
*
* @param a {Float} first value
* @param b {Float} second value
*
* @return {Number}
* 0 if both values are equal
* a number > 0 if the first value if greater than the second one
* a value < 0 otherwise
*/
qx.util.Compare.byFloat = function(a, b) {
return a - b;
};
qx.util.Compare.byInteger = qx.util.Compare.byNumber = qx.util.Compare.byFloat;
/**
* Compare two Strings representing integers. First convert the strings to an interger.
*
* @param a {String} first value
* @param b {String} second value
*
* @return {Number}
* 0 if both values are equal
* a number > 0 if the first value if greater than the second one
* a value < 0 otherwise
*/
qx.util.Compare.byIntegerString = function(a, b) {
return parseInt(a) - parseInt(b);
};
/**
* Compare two Strings representing floats. First convert the strings to an float.
*
* @param a {String} first value
* @param b {String} second value
*
* @return {Number}
* 0 if both values are equal
* a number > 0 if the first value if greater than the second one
* a value < 0 otherwise
*/
qx.util.Compare.byFloatString = function(a, b) {
return parseFloat(a) - parseFloat(b);
};
qx.util.Compare.byNumberString = qx.util.Compare.byFloatString;
/**
* Compare two Strings representing IPv4 adresses.
* Example: "192.168.1.2"
*
* @param a {String} first value
* @param b {String} second value
*
* @return {Number}
* 0 if both values are equal
* a number > 0 if the first value if greater than the second one
* a value < 0 otherwise
*/
qx.util.Compare.byIPv4 = function(a, b)
{
var ipa = a.split(".", 4);
var ipb = b.split(".", 4);
for (var i=0; i<3; i++)
{
a = parseInt(ipa[i]);
b = parseInt(ipb[i]);
if (a != b) {
return a - b;
}
}
return parseInt(ipa[3]) - parseInt(ipb[3]);
};
/**
* Compare the zIndex property of two widgets.
*
* @param a {qx.ui.core.Widget} first value
* @param b {qx.ui.core.Widget} second value
*
* @return {Number}
* 0 if both values are equal
* a number > 0 if the first value if greater than the second one
* a value < 0 otherwise
*/
qx.util.Compare.byZIndex = function(a, b) {
return a.getZIndex() - b.getZIndex();
};
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