ddd-jquery/offset.js

de-bowerified, de-amdified, de-gruntified... jQuery.

var jQuery = require('./core'), strundefined = require('./var/strundefined'), access = require('./core/access'), rnumnonpx = require('./css/var/rnumnonpx'), curCSS = require('./css/curCSS'), addGetHookIf = require('./css/addGetHookIf'), support = require('./css/support'), __unnameddep__ = require('./core/init'), __unnameddep__ = require('./css'), __unnameddep__ = require('./selector');
var docElem = window.document.documentElement;
function getWindow(elem) {
    return jQuery.isWindow(elem) ? elem : elem.nodeType === 9 && elem.defaultView;
}
jQuery.offset = {
    setOffset: function (elem, options, i) {
        var curPosition, curLeft, curCSSTop, curTop, curOffset, curCSSLeft, calculatePosition, position = jQuery.css(elem, 'position'), curElem = jQuery(elem), props = {};
        if (position === 'static') {
            elem.style.position = 'relative';
        }
        curOffset = curElem.offset();
        curCSSTop = jQuery.css(elem, 'top');
        curCSSLeft = jQuery.css(elem, 'left');
        calculatePosition = (position === 'absolute' || position === 'fixed') && (curCSSTop + curCSSLeft).indexOf('auto') > -1;
        if (calculatePosition) {
            curPosition = curElem.position();
            curTop = curPosition.top;
            curLeft = curPosition.left;
        } else {
            curTop = parseFloat(curCSSTop) || 0;
            curLeft = parseFloat(curCSSLeft) || 0;
        }
        if (jQuery.isFunction(options)) {
            options = options.call(elem, i, curOffset);
        }
        if (options.top != null) {
            props.top = options.top - curOffset.top + curTop;
        }
        if (options.left != null) {
            props.left = options.left - curOffset.left + curLeft;
        }
        if ('using' in options) {
            options.using.call(elem, props);
        } else {
            curElem.css(props);
        }
    }
};
jQuery.fn.extend({
    offset: function (options) {
        if (arguments.length) {
            return options === undefined ? this : this.each(function (i) {
                jQuery.offset.setOffset(this, options, i);
            });
        }
        var docElem, win, elem = this[0], box = {
                top: 0,
                left: 0
            }, doc = elem && elem.ownerDocument;
        if (!doc) {
            return;
        }
        docElem = doc.documentElement;
        if (!jQuery.contains(docElem, elem)) {
            return box;
        }
        if (typeof elem.getBoundingClientRect !== strundefined) {
            box = elem.getBoundingClientRect();
        }
        win = getWindow(doc);
        return {
            top: box.top + win.pageYOffset - docElem.clientTop,
            left: box.left + win.pageXOffset - docElem.clientLeft
        };
    },
    position: function () {
        if (!this[0]) {
            return;
        }
        var offsetParent, offset, elem = this[0], parentOffset = {
                top: 0,
                left: 0
            };
        if (jQuery.css(elem, 'position') === 'fixed') {
            offset = elem.getBoundingClientRect();
        } else {
            offsetParent = this.offsetParent();
            offset = this.offset();
            if (!jQuery.nodeName(offsetParent[0], 'html')) {
                parentOffset = offsetParent.offset();
            }
            parentOffset.top += jQuery.css(offsetParent[0], 'borderTopWidth', true);
            parentOffset.left += jQuery.css(offsetParent[0], 'borderLeftWidth', true);
        }
        return {
            top: offset.top - parentOffset.top - jQuery.css(elem, 'marginTop', true),
            left: offset.left - parentOffset.left - jQuery.css(elem, 'marginLeft', true)
        };
    },
    offsetParent: function () {
        return this.map(function () {
            var offsetParent = this.offsetParent || docElem;
            while (offsetParent && (!jQuery.nodeName(offsetParent, 'html') && jQuery.css(offsetParent, 'position') === 'static')) {
                offsetParent = offsetParent.offsetParent;
            }
            return offsetParent || docElem;
        });
    }
});
jQuery.each({
    scrollLeft: 'pageXOffset',
    scrollTop: 'pageYOffset'
}, function (method, prop) {
    var top = 'pageYOffset' === prop;
    jQuery.fn[method] = function (val) {
        return access(this, function (elem, method, val) {
            var win = getWindow(elem);
            if (val === undefined) {
                return win ? win[prop] : elem[method];
            }
            if (win) {
                win.scrollTo(!top ? val : window.pageXOffset, top ? val : window.pageYOffset);
            } else {
                elem[method] = val;
            }
        }, method, val, arguments.length, null);
    };
});
jQuery.each([
    'top',
    'left'
], function (i, prop) {
    jQuery.cssHooks[prop] = addGetHookIf(support.pixelPosition, function (elem, computed) {
        if (computed) {
            computed = curCSS(elem, prop);
            return rnumnonpx.test(computed) ? jQuery(elem).position()[prop] + 'px' : computed;
        }
    });
});
module.exports = jQuery;