pjs/webtools/bugzilla/js/util.js

/* ***** BEGIN LICENSE BLOCK *****
 * Version: MPL 1.1
 *
 * The contents of this file are subject to the Mozilla Public License Version
 * 1.1 (the "License"); you may not use this file except in compliance with
 * the License. You may obtain a copy of the License at
 * http://www.mozilla.org/MPL/
 *
 * Software distributed under the License is distributed on an "AS IS" basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
 * for the specific language governing rights and limitations under the
 * License.
 *
 * The Original Code is the Cross Platform JavaScript Utility Library.
 *
 * The Initial Developer of the Original Code is
 * Everything Solved.
 * Portions created by the Initial Developer are Copyright (C) 2007
 * the Initial Developer. All Rights Reserved.
 *
 * Contributor(s):
 *   Max Kanat-Alexander <mkanat@bugzilla.org>
 *
 * ***** END LICENSE BLOCK ***** */

/**
 * Locate where an element is on the page, x-wise.
 *
 * @param  obj Element of which location to return.
 * @return     Current position of the element relative to the left of the
 *             page window. Measured in pixels.
 */
function bz_findPosX(obj)
{
    var curleft = 0;

    if (obj.offsetParent) {
        while (obj) {
            curleft += obj.offsetLeft;
            obj = obj.offsetParent;
        }
    }
    else if (obj.x) {
        curleft += obj.x;
    }

    return curleft;
}

/**
 * Locate where an element is on the page, y-wise.
 *
 * @param  obj Element of which location to return.
 * @return     Current position of the element relative to the top of the
 *             page window. Measured in pixels.
 */
function bz_findPosY(obj)
{
    var curtop = 0;

    if (obj.offsetParent) {
        while (obj) {
            curtop += obj.offsetTop;
            obj = obj.offsetParent;
        }
    }
    else if (obj.y) {
        curtop += obj.y;
    }

    return curtop;
}

/**
 * Get the full height of an element, even if it's larger than the browser
 * window.
 *
 * @param  fromObj Element of which height to return.
 * @return         Current height of the element. Measured in pixels.
 */
function bz_getFullHeight(fromObj)
{
    var scrollY;

    // All but Mac IE
    if (fromObj.scrollHeight > fromObj.offsetHeight) {
        scrollY = fromObj.scrollHeight;
    // Mac IE
    }  else {
        scrollY = fromObj.offsetHeight;
    }

    return scrollY;
}

/**
 * Get the full width of an element, even if it's larger than the browser
 * window.
 *
 * @param  fromObj Element of which width to return.
 * @return         Current width of the element. Measured in pixels.
 */
function bz_getFullWidth(fromObj)
{
    var scrollX;

    // All but Mac IE
    if (fromObj.scrollWidth > fromObj.offsetWidth) {
        scrollX = fromObj.scrollWidth;
    // Mac IE
    }  else {
        scrollX = fromObj.offsetWidth;
    }

    return scrollX;
}