source: main/trunk/greenstone3/web/interfaces/oran/js/jquery-ui-1.8rc1/ui/jquery.ui.core.js@ 24245

/*!
 * jQuery UI 1.8rc1
 *
 * Copyright (c) 2010 AUTHORS.txt (http://jqueryui.com/about)
 * Dual licensed under the MIT (MIT-LICENSE.txt)
 * and GPL (GPL-LICENSE.txt) licenses.
 *
 * http://docs.jquery.com/UI
 */
;jQuery.ui || (function($) {

var isFF2 = $.browser.mozilla && (parseFloat($.browser.version) < 1.9);

//Helper functions and ui object
$.ui = {
    version: "1.8rc1",

    // $.ui.plugin is deprecated.  Use the proxy pattern instead.
    plugin: {
        add: function(module, option, set) {
            var proto = $.ui[module].prototype;
            for(var i in set) {
                proto.plugins[i] = proto.plugins[i] || [];
                proto.plugins[i].push([option, set[i]]);
            }
        },
        call: function(instance, name, args) {
            var set = instance.plugins[name];
            if(!set || !instance.element[0].parentNode) { return; }

            for (var i = 0; i < set.length; i++) {
                if (instance.options[set[i][0]]) {
                    set[i][1].apply(instance.element, args);
                }
            }
        }
    },

    contains: function(a, b) {
        return document.compareDocumentPosition
            ? a.compareDocumentPosition(b) & 16
            : a !== b && a.contains(b);
    },

    hasScroll: function(el, a) {

        //If overflow is hidden, the element might have extra content, but the user wants to hide it
        if ($(el).css('overflow') == 'hidden') { return false; }

        var scroll = (a && a == 'left') ? 'scrollLeft' : 'scrollTop',
            has = false;

        if (el[scroll] > 0) { return true; }

        // TODO: determine which cases actually cause this to happen
        // if the element doesn't have the scroll set, see if it's possible to
        // set the scroll
        el[scroll] = 1;
        has = (el[scroll] > 0);
        el[scroll] = 0;
        return has;
    },

    isOverAxis: function(x, reference, size) {
        //Determines when x coordinate is over "b" element axis
        return (x > reference) && (x < (reference + size));
    },

    isOver: function(y, x, top, left, height, width) {
        //Determines when x, y coordinates is over "b" element
        return $.ui.isOverAxis(y, top, height) && $.ui.isOverAxis(x, left, width);
    },

    keyCode: {
        BACKSPACE: 8,
        CAPS_LOCK: 20,
        COMMA: 188,
        CONTROL: 17,
        DELETE: 46,
        DOWN: 40,
        END: 35,
        ENTER: 13,
        ESCAPE: 27,
        HOME: 36,
        INSERT: 45,
        LEFT: 37,
        NUMPAD_ADD: 107,
        NUMPAD_DECIMAL: 110,
        NUMPAD_DIVIDE: 111,
        NUMPAD_ENTER: 108,
        NUMPAD_MULTIPLY: 106,
        NUMPAD_SUBTRACT: 109,
        PAGE_DOWN: 34,
        PAGE_UP: 33,
        PERIOD: 190,
        RIGHT: 39,
        SHIFT: 16,
        SPACE: 32,
        TAB: 9,
        UP: 38
    }
};

//jQuery plugins
$.fn.extend({
    _focus: $.fn.focus,
    focus: function(delay, fn) {
        return typeof delay === 'number'
            ? this.each(function() {
                var elem = this;
                setTimeout(function() {
                    $(elem).focus();
                    (fn && fn.call(elem));
                }, delay);
            })
            : this._focus.apply(this, arguments);
    },
    
    enableSelection: function() {
        return this
            .attr('unselectable', 'off')
            .css('MozUserSelect', '')
            .unbind('selectstart.ui');
    },

    disableSelection: function() {
        return this
            .attr('unselectable', 'on')
            .css('MozUserSelect', 'none')
            .bind('selectstart.ui', function() { return false; });
    },

    scrollParent: function() {
        var scrollParent;
        if(($.browser.msie && (/(static|relative)/).test(this.css('position'))) || (/absolute/).test(this.css('position'))) {
            scrollParent = this.parents().filter(function() {
                return (/(relative|absolute|fixed)/).test($.curCSS(this,'position',1)) && (/(auto|scroll)/).test($.curCSS(this,'overflow',1)+$.curCSS(this,'overflow-y',1)+$.curCSS(this,'overflow-x',1));
            }).eq(0);
        } else {
            scrollParent = this.parents().filter(function() {
                return (/(auto|scroll)/).test($.curCSS(this,'overflow',1)+$.curCSS(this,'overflow-y',1)+$.curCSS(this,'overflow-x',1));
            }).eq(0);
        }

        return (/fixed/).test(this.css('position')) || !scrollParent.length ? $(document) : scrollParent;
    },

    zIndex: function(zIndex) {
        if (zIndex !== undefined) {
            return this.css('zIndex', zIndex);
        }

        var elem = this[0];
        while (elem && elem.style) {
            // IE returns 0 when zIndex is not specified
            // other browsers return an empty string
            // we ignore the case of nested elements with an explicit value of 0
            // <div style="z-index: -10;"><div style="z-index: 0;"></div></div>
            if (elem.style.zIndex !== '' && elem.style.zIndex !== 0) {
                return +elem.style.zIndex;
            }
            elem = elem.parentNode;
        }

        return 0;
    }
});


//Additional selectors
$.extend($.expr[':'], {
    data: function(elem, i, match) {
        return !!$.data(elem, match[3]);
    },

    focusable: function(element) {
        var nodeName = element.nodeName.toLowerCase(),
            tabIndex = $.attr(element, 'tabindex');
        return (/input|select|textarea|button|object/.test(nodeName)
            ? !element.disabled
            : 'a' == nodeName || 'area' == nodeName
                ? element.href || !isNaN(tabIndex)
                : !isNaN(tabIndex))
            // the element and all of its ancestors must be visible
            // the browser may report that the area is hidden
            && !$(element)['area' == nodeName ? 'parents' : 'closest'](':hidden').length;
    },

    tabbable: function(element) {
        var tabIndex = $.attr(element, 'tabindex');
        return (isNaN(tabIndex) || tabIndex >= 0) && $(element).is(':focusable');
    }
});

})(jQuery);