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-/*
-Copyright (c) 2006, Yahoo! Inc. All rights reserved.
-Code licensed under the BSD License:
-http://developer.yahoo.net/yui/license.txt
-version: 0.12.2
-*/
-/**
- * The dom module provides helper methods for manipulating Dom elements.
- * @module dom
- *
- */
-
-(function() {
- var Y = YAHOO.util, // internal shorthand
- getStyle, // for load time browser branching
- setStyle, // ditto
- id_counter = 0, // for use with generateId
- propertyCache = {}; // for faster hyphen converts
-
- // brower detection
- var ua = navigator.userAgent.toLowerCase(),
- isOpera = (ua.indexOf('opera') > -1),
- isSafari = (ua.indexOf('safari') > -1),
- isGecko = (!isOpera && !isSafari && ua.indexOf('gecko') > -1),
- isIE = (!isOpera && ua.indexOf('msie') > -1);
-
- // regex cache
- var patterns = {
- HYPHEN: /(-[a-z])/i
- };
-
- var logger = {};
- logger.log = function() { YAHOO.log.apply(window, arguments); };
-
- var toCamel = function(property) {
- if ( !patterns.HYPHEN.test(property) ) {
- return property; // no hyphens
- }
-
- if (propertyCache[property]) { // already converted
- return propertyCache[property];
- }
-
- while( patterns.HYPHEN.exec(property) ) {
- property = property.replace(RegExp.$1,
- RegExp.$1.substr(1).toUpperCase());
- }
-
- propertyCache[property] = property;
- return property;
- //return property.replace(/-([a-z])/gi, function(m0, m1) {return m1.toUpperCase()}) // cant use function as 2nd arg yet due to safari bug
- };
-
- // branching at load instead of runtime
- if (document.defaultView && document.defaultView.getComputedStyle) { // W3C DOM method
- getStyle = function(el, property) {
- var value = null;
-
- var computed = document.defaultView.getComputedStyle(el, '');
- if (computed) { // test computed before touching for safari
- value = computed[toCamel(property)];
- }
-
- return el.style[property] || value;
- };
- } else if (document.documentElement.currentStyle && isIE) { // IE method
- getStyle = function(el, property) {
- switch( toCamel(property) ) {
- case 'opacity' :// IE opacity uses filter
- var val = 100;
- try { // will error if no DXImageTransform
- val = el.filters['DXImageTransform.Microsoft.Alpha'].opacity;
-
- } catch(e) {
- try { // make sure its in the document
- val = el.filters('alpha').opacity;
- } catch(e) {
- logger.log('getStyle: IE filter failed',
- 'error', 'Dom');
- }
- }
- return val / 100;
- break;
- default:
- // test currentStyle before touching
- var value = el.currentStyle ? el.currentStyle[property] : null;
- return ( el.style[property] || value );
- }
- };
- } else { // default to inline only
- getStyle = function(el, property) { return el.style[property]; };
- }
-
- if (isIE) {
- setStyle = function(el, property, val) {
- switch (property) {
- case 'opacity':
- if ( typeof el.style.filter == 'string' ) { // in case not appended
- el.style.filter = 'alpha(opacity=' + val * 100 + ')';
-
- if (!el.currentStyle || !el.currentStyle.hasLayout) {
- el.style.zoom = 1; // when no layout or cant tell
- }
- }
- break;
- default:
- el.style[property] = val;
- }
- };
- } else {
- setStyle = function(el, property, val) {
- el.style[property] = val;
- };
- }
-
- /**
- * Provides helper methods for DOM elements.
- * @namespace YAHOO.util
- * @class Dom
- */
- YAHOO.util.Dom = {
- /**
- * Returns an HTMLElement reference.
- * @method get
- * @param {String | HTMLElement |Array} el Accepts a string to use as an ID for getting a DOM reference, an actual DOM reference, or an Array of IDs and/or HTMLElements.
- * @return {HTMLElement | Array} A DOM reference to an HTML element or an array of HTMLElements.
- */
- get: function(el) {
- if (!el) { return null; } // nothing to work with
-
- if (typeof el != 'string' && !(el instanceof Array) ) { // assuming HTMLElement or HTMLCollection, so pass back as is
- logger.log('get(' + el + ') returning ' + el, 'info', 'Dom');
- return el;
- }
-
- if (typeof el == 'string') { // ID
- logger.log('get("' + el + '") returning ' + document.getElementById(el), 'info', 'Dom');
- return document.getElementById(el);
- }
- else { // array of ID's and/or elements
- var collection = [];
- for (var i = 0, len = el.length; i < len; ++i) {
- collection[collection.length] = Y.Dom.get(el[i]);
- }
-
- logger.log('get("' + el + '") returning ' + collection, 'info', 'Dom');
- return collection;
- }
-
- logger.log('element ' + el + ' not found', 'error', 'Dom');
- return null; // safety, should never happen
- },
-
- /**
- * Normalizes currentStyle and ComputedStyle.
- * @method getStyle
- * @param {String | HTMLElement |Array} el Accepts a string to use as an ID, an actual DOM reference, or an Array of IDs and/or HTMLElements.
- * @param {String} property The style property whose value is returned.
- * @return {String | Array} The current value of the style property for the element(s).
- */
- getStyle: function(el, property) {
- property = toCamel(property);
-
- var f = function(element) {
- return getStyle(element, property);
- };
-
- return Y.Dom.batch(el, f, Y.Dom, true);
- },
-
- /**
- * Wrapper for setting style properties of HTMLElements. Normalizes "opacity" across modern browsers.
- * @method setStyle
- * @param {String | HTMLElement | Array} el Accepts a string to use as an ID, an actual DOM reference, or an Array of IDs and/or HTMLElements.
- * @param {String} property The style property to be set.
- * @param {String} val The value to apply to the given property.
- */
- setStyle: function(el, property, val) {
- property = toCamel(property);
-
- var f = function(element) {
- setStyle(element, property, val);
- logger.log('setStyle setting ' + property + ' to ' + val, 'info', 'Dom');
-
- };
-
- Y.Dom.batch(el, f, Y.Dom, true);
- },
-
- /**
- * Gets the current position of an element based on page coordinates. Element must be part of the DOM tree to have page coordinates (display:none or elements not appended return false).
- * @method getXY
- * @param {String | HTMLElement | Array} el Accepts a string to use as an ID, an actual DOM reference, or an Array of IDs and/or HTMLElements
- * @return {Array} The XY position of the element(s)
- */
- getXY: function(el) {
- var f = function(el) {
-
- // has to be part of document to have pageXY
- if (el.parentNode === null || el.offsetParent === null ||
- this.getStyle(el, 'display') == 'none') {
- logger.log('getXY failed: element not available', 'error', 'Dom');
- return false;
- }
-
- var parentNode = null;
- var pos = [];
- var box;
-
- if (el.getBoundingClientRect) { // IE
- box = el.getBoundingClientRect();
- var doc = document;
- if ( !this.inDocument(el) && parent.document != document) {// might be in a frame, need to get its scroll
- doc = parent.document;
-
- if ( !this.isAncestor(doc.documentElement, el) ) {
- logger.log('getXY failed: element not available', 'error', 'Dom');
- return false;
- }
-
- }
-
- var scrollTop = Math.max(doc.documentElement.scrollTop, doc.body.scrollTop);
- var scrollLeft = Math.max(doc.documentElement.scrollLeft, doc.body.scrollLeft);
-
- return [box.left + scrollLeft, box.top + scrollTop];
- }
- else { // safari, opera, & gecko
- pos = [el.offsetLeft, el.offsetTop];
- parentNode = el.offsetParent;
- if (parentNode != el) {
- while (parentNode) {
- pos[0] += parentNode.offsetLeft;
- pos[1] += parentNode.offsetTop;
- parentNode = parentNode.offsetParent;
- }
- }
- if (isSafari && this.getStyle(el, 'position') == 'absolute' ) { // safari doubles in some cases
- pos[0] -= document.body.offsetLeft;
- pos[1] -= document.body.offsetTop;
- }
- }
-
- if (el.parentNode) { parentNode = el.parentNode; }
- else { parentNode = null; }
-
- while (parentNode && parentNode.tagName.toUpperCase() != 'BODY' && parentNode.tagName.toUpperCase() != 'HTML')
- { // account for any scrolled ancestors
- if (Y.Dom.getStyle(parentNode, 'display') != 'inline') { // work around opera inline scrollLeft/Top bug
- pos[0] -= parentNode.scrollLeft;
- pos[1] -= parentNode.scrollTop;
- }
-
- if (parentNode.parentNode) {
- parentNode = parentNode.parentNode;
- } else { parentNode = null; }
- }
-
- logger.log('getXY returning ' + pos, 'info', 'Dom');
-
- return pos;
- };
-
- return Y.Dom.batch(el, f, Y.Dom, true);
- },
-
- /**
- * Gets the current X position of an element based on page coordinates. The element must be part of the DOM tree to have page coordinates (display:none or elements not appended return false).
- * @method getX
- * @param {String | HTMLElement | Array} el Accepts a string to use as an ID, an actual DOM reference, or an Array of IDs and/or HTMLElements
- * @return {String | Array} The X position of the element(s)
- */
- getX: function(el) {
- var f = function(el) {
- return Y.Dom.getXY(el)[0];
- };
-
- return Y.Dom.batch(el, f, Y.Dom, true);
- },
-
- /**
- * Gets the current Y position of an element based on page coordinates. Element must be part of the DOM tree to have page coordinates (display:none or elements not appended return false).
- * @method getY
- * @param {String | HTMLElement | Array} el Accepts a string to use as an ID, an actual DOM reference, or an Array of IDs and/or HTMLElements
- * @return {String | Array} The Y position of the element(s)
- */
- getY: function(el) {
- var f = function(el) {
- return Y.Dom.getXY(el)[1];
- };
-
- return Y.Dom.batch(el, f, Y.Dom, true);
- },
-
- /**
- * Set the position of an html element in page coordinates, regardless of how the element is positioned.
- * The element(s) must be part of the DOM tree to have page coordinates (display:none or elements not appended return false).
- * @method setXY
- * @param {String | HTMLElement | Array} el Accepts a string to use as an ID, an actual DOM reference, or an Array of IDs and/or HTMLElements
- * @param {Array} pos Contains X & Y values for new position (coordinates are page-based)
- * @param {Boolean} noRetry By default we try and set the position a second time if the first fails
- */
- setXY: function(el, pos, noRetry) {
- var f = function(el) {
- var style_pos = this.getStyle(el, 'position');
- if (style_pos == 'static') { // default to relative
- this.setStyle(el, 'position', 'relative');
- style_pos = 'relative';
- }
-
- var pageXY = this.getXY(el);
- if (pageXY === false) { // has to be part of doc to have pageXY
- logger.log('setXY failed: element not available', 'error', 'Dom');
- return false;
- }
-
- var delta = [ // assuming pixels; if not we will have to retry
- parseInt( this.getStyle(el, 'left'), 10 ),
- parseInt( this.getStyle(el, 'top'), 10 )
- ];
-
- if ( isNaN(delta[0]) ) {// in case of 'auto'
- delta[0] = (style_pos == 'relative') ? 0 : el.offsetLeft;
- }
- if ( isNaN(delta[1]) ) { // in case of 'auto'
- delta[1] = (style_pos == 'relative') ? 0 : el.offsetTop;
- }
-
- if (pos[0] !== null) { el.style.left = pos[0] - pageXY[0] + delta[0] + 'px'; }
- if (pos[1] !== null) { el.style.top = pos[1] - pageXY[1] + delta[1] + 'px'; }
-
- if (!noRetry) {
- var newXY = this.getXY(el);
-
- // if retry is true, try one more time if we miss
- if ( (pos[0] !== null && newXY[0] != pos[0]) ||
- (pos[1] !== null && newXY[1] != pos[1]) ) {
- this.setXY(el, pos, true);
- }
- }
-
- logger.log('setXY setting position to ' + pos, 'info', 'Dom');
- };
-
- Y.Dom.batch(el, f, Y.Dom, true);
- },
-
- /**
- * Set the X position of an html element in page coordinates, regardless of how the element is positioned.
- * The element must be part of the DOM tree to have page coordinates (display:none or elements not appended return false).
- * @method setX
- * @param {String | HTMLElement | Array} el Accepts a string to use as an ID, an actual DOM reference, or an Array of IDs and/or HTMLElements.
- * @param {Int} x The value to use as the X coordinate for the element(s).
- */
- setX: function(el, x) {
- Y.Dom.setXY(el, [x, null]);
- },
-
- /**
- * Set the Y position of an html element in page coordinates, regardless of how the element is positioned.
- * The element must be part of the DOM tree to have page coordinates (display:none or elements not appended return false).
- * @method setY
- * @param {String | HTMLElement | Array} el Accepts a string to use as an ID, an actual DOM reference, or an Array of IDs and/or HTMLElements.
- * @param {Int} x To use as the Y coordinate for the element(s).
- */
- setY: function(el, y) {
- Y.Dom.setXY(el, [null, y]);
- },
-
- /**
- * Returns the region position of the given element.
- * The element must be part of the DOM tree to have a region (display:none or elements not appended return false).
- * @method getRegion
- * @param {String | HTMLElement | Array} el Accepts a string to use as an ID, an actual DOM reference, or an Array of IDs and/or HTMLElements.
- * @return {Region | Array} A Region or array of Region instances containing "top, left, bottom, right" member data.
- */
- getRegion: function(el) {
- var f = function(el) {
- var region = new Y.Region.getRegion(el);
- logger.log('getRegion returning ' + region, 'info', 'Dom');
- return region;
- };
-
- return Y.Dom.batch(el, f, Y.Dom, true);
- },
-
- /**
- * Returns the width of the client (viewport).
- * @method getClientWidth
- * @deprecated Now using getViewportWidth. This interface left intact for back compat.
- * @return {Int} The width of the viewable area of the page.
- */
- getClientWidth: function() {
- return Y.Dom.getViewportWidth();
- },
-
- /**
- * Returns the height of the client (viewport).
- * @method getClientHeight
- * @deprecated Now using getViewportHeight. This interface left intact for back compat.
- * @return {Int} The height of the viewable area of the page.
- */
- getClientHeight: function() {
- return Y.Dom.getViewportHeight();
- },
-
- /**
- * Returns a array of HTMLElements with the given class.
- * For optimized performance, include a tag and/or root node when possible.
- * @method getElementsByClassName
- * @param {String} className The class name to match against
- * @param {String} tag (optional) The tag name of the elements being collected
- * @param {String | HTMLElement} root (optional) The HTMLElement or an ID to use as the starting point
- * @return {Array} An array of elements that have the given class name
- */
- getElementsByClassName: function(className, tag, root) {
- var method = function(el) { return Y.Dom.hasClass(el, className); };
- return Y.Dom.getElementsBy(method, tag, root);
- },
-
- /**
- * Determines whether an HTMLElement has the given className.
- * @method hasClass
- * @param {String | HTMLElement | Array} el The element or collection to test
- * @param {String} className the class name to search for
- * @return {Boolean | Array} A boolean value or array of boolean values
- */
- hasClass: function(el, className) {
- var re = new RegExp('(?:^|\\s+)' + className + '(?:\\s+|$)');
-
- var f = function(el) {
- logger.log('hasClass returning ' + re.test(el['className']), 'info', 'Dom');
- return re.test(el['className']);
- };
-
- return Y.Dom.batch(el, f, Y.Dom, true);
- },
-
- /**
- * Adds a class name to a given element or collection of elements.
- * @method addClass
- * @param {String | HTMLElement | Array} el The element or collection to add the class to
- * @param {String} className the class name to add to the class attribute
- */
- addClass: function(el, className) {
- var f = function(el) {
- if (this.hasClass(el, className)) { return; } // already present
-
- logger.log('addClass adding ' + className, 'info', 'Dom');
-
- el['className'] = [el['className'], className].join(' ');
- };
-
- Y.Dom.batch(el, f, Y.Dom, true);
- },
-
- /**
- * Removes a class name from a given element or collection of elements.
- * @method removeClass
- * @param {String | HTMLElement | Array} el The element or collection to remove the class from
- * @param {String} className the class name to remove from the class attribute
- */
- removeClass: function(el, className) {
- var re = new RegExp('(?:^|\\s+)' + className + '(?:\\s+|$)', 'g');
-
- var f = function(el) {
- if (!this.hasClass(el, className)) { return; } // not present
-
- logger.log('removeClass removing ' + className, 'info', 'Dom');
-
- var c = el['className'];
- el['className'] = c.replace(re, ' ');
- if ( this.hasClass(el, className) ) { // in case of multiple adjacent
- this.removeClass(el, className);
- }
-
- };
-
- Y.Dom.batch(el, f, Y.Dom, true);
- },
-
- /**
- * Replace a class with another class for a given element or collection of elements.
- * If no oldClassName is present, the newClassName is simply added.
- * @method replaceClass
- * @param {String | HTMLElement | Array} el The element or collection to remove the class from
- * @param {String} oldClassName the class name to be replaced
- * @param {String} newClassName the class name that will be replacing the old class name
- */
- replaceClass: function(el, oldClassName, newClassName) {
- if (oldClassName === newClassName) { // avoid infinite loop
- return false;
- }
-
- var re = new RegExp('(?:^|\\s+)' + oldClassName + '(?:\\s+|$)', 'g');
-
- var f = function(el) {
- logger.log('replaceClass replacing ' + oldClassName + ' with ' + newClassName, 'info', 'Dom');
-
- if ( !this.hasClass(el, oldClassName) ) {
- this.addClass(el, newClassName); // just add it if nothing to replace
- return; // note return
- }
-
- el['className'] = el['className'].replace(re, ' ' + newClassName + ' ');
-
- if ( this.hasClass(el, oldClassName) ) { // in case of multiple adjacent
- this.replaceClass(el, oldClassName, newClassName);
- }
- };
-
- Y.Dom.batch(el, f, Y.Dom, true);
- },
-
- /**
- * Generates a unique ID
- * @method generateId
- * @param {String | HTMLElement | Array} el (optional) An optional element array of elements to add an ID to (no ID is added if one is already present).
- * @param {String} prefix (optional) an optional prefix to use (defaults to "yui-gen").
- * @return {String | Array} The generated ID, or array of generated IDs (or original ID if already present on an element)
- */
- generateId: function(el, prefix) {
- prefix = prefix || 'yui-gen';
- el = el || {};
-
- var f = function(el) {
- if (el) {
- el = Y.Dom.get(el);
- } else {
- el = {}; // just generating ID in this case
- }
-
- if (!el.id) {
- el.id = prefix + id_counter++;
- logger.log('generateId generating ' + el.id, 'info', 'Dom');
- } // dont override existing
-
- logger.log('generateId returning ' + el.id, 'info', 'Dom');
-
- return el.id;
- };
-
- return Y.Dom.batch(el, f, Y.Dom, true);
- },
-
- /**
- * Determines whether an HTMLElement is an ancestor of another HTML element in the DOM hierarchy.
- * @method isAncestor
- * @param {String | HTMLElement} haystack The possible ancestor
- * @param {String | HTMLElement} needle The possible descendent
- * @return {Boolean} Whether or not the haystack is an ancestor of needle
- */
- isAncestor: function(haystack, needle) {
- haystack = Y.Dom.get(haystack);
- if (!haystack || !needle) { return false; }
-
- var f = function(needle) {
- if (haystack.contains && !isSafari) { // safari "contains" is broken
- logger.log('isAncestor returning ' + haystack.contains(needle), 'info', 'Dom');
- return haystack.contains(needle);
- }
- else if ( haystack.compareDocumentPosition ) {
- logger.log('isAncestor returning ' + !!(haystack.compareDocumentPosition(needle) & 16), 'info', 'Dom');
- return !!(haystack.compareDocumentPosition(needle) & 16);
- }
- else { // loop up and test each parent
- var parent = needle.parentNode;
-
- while (parent) {
- if (parent == haystack) {
- logger.log('isAncestor returning true', 'info', 'Dom');
- return true;
- }
- else if (!parent.tagName || parent.tagName.toUpperCase() == 'HTML') {
- logger.log('isAncestor returning false', 'info', 'Dom');
- return false;
- }
-
- parent = parent.parentNode;
- }
- logger.log('isAncestor returning false', 'info', 'Dom');
- return false;
- }
- };
-
- return Y.Dom.batch(needle, f, Y.Dom, true);
- },
-
- /**
- * Determines whether an HTMLElement is present in the current document.
- * @method inDocument
- * @param {String | HTMLElement} el The element to search for
- * @return {Boolean} Whether or not the element is present in the current document
- */
- inDocument: function(el) {
- var f = function(el) {
- return this.isAncestor(document.documentElement, el);
- };
-
- return Y.Dom.batch(el, f, Y.Dom, true);
- },
-
- /**
- * Returns a array of HTMLElements that pass the test applied by supplied boolean method.
- * For optimized performance, include a tag and/or root node when possible.
- * @method getElementsBy
- * @param {Function} method - A boolean method for testing elements which receives the element as its only argument.
-
- * @param {String} tag (optional) The tag name of the elements being collected
- * @param {String | HTMLElement} root (optional) The HTMLElement or an ID to use as the starting point
- */
- getElementsBy: function(method, tag, root) {
- tag = tag || '*';
-
- var nodes = [];
-
- if (root) {
- root = Y.Dom.get(root);
- if (!root) { // if no root node, then no children
- return nodes;
- }
- } else {
- root = document;
- }
-
- var elements = root.getElementsByTagName(tag);
-
- if ( !elements.length && (tag == '*' && root.all) ) {
- elements = root.all; // IE < 6
- }
-
- for (var i = 0, len = elements.length; i < len; ++i) {
- if ( method(elements[i]) ) { nodes[nodes.length] = elements[i]; }
- }
-
- logger.log('getElementsBy returning ' + nodes, 'info', 'Dom');
-
- return nodes;
- },
-
- /**
- * Returns an array of elements that have had the supplied method applied.
- * The method is called with the element(s) as the first arg, and the optional param as the second ( method(el, o) ).
- * @method batch
- * @param {String | HTMLElement | Array} el (optional) An element or array of elements to apply the method to
- * @param {Function} method The method to apply to the element(s)
- * @param {Any} o (optional) An optional arg that is passed to the supplied method
- * @param {Boolean} override (optional) Whether or not to override the scope of "method" with "o"
- * @return {HTMLElement | Array} The element(s) with the method applied
- */
- batch: function(el, method, o, override) {
- var id = el;
- el = Y.Dom.get(el);
-
- var scope = (override) ? o : window;
-
- if (!el || el.tagName || !el.length) { // is null or not a collection (tagName for SELECT and others that can be both an element and a collection)
- if (!el) {
- logger.log(id + ' not available', 'error', 'Dom');
- return false;
- }
- return method.call(scope, el, o);
- }
-
- var collection = [];
-
- for (var i = 0, len = el.length; i < len; ++i) {
- if (!el[i]) {
- id = el[i];
- logger.log(id + ' not available', 'error', 'Dom');
- }
- collection[collection.length] = method.call(scope, el[i], o);
- }
-
- return collection;
- },
-
- /**
- * Returns the height of the document.
- * @method getDocumentHeight
- * @return {Int} The height of the actual document (which includes the body and its margin).
- */
- getDocumentHeight: function() {
- var scrollHeight = (document.compatMode != 'CSS1Compat') ? document.body.scrollHeight : document.documentElement.scrollHeight;
-
- var h = Math.max(scrollHeight, Y.Dom.getViewportHeight());
- logger.log('getDocumentHeight returning ' + h, 'info', 'Dom');
- return h;
- },
-
- /**
- * Returns the width of the document.
- * @method getDocumentWidth
- * @return {Int} The width of the actual document (which includes the body and its margin).
- */
- getDocumentWidth: function() {
- var scrollWidth = (document.compatMode != 'CSS1Compat') ? document.body.scrollWidth : document.documentElement.scrollWidth;
- var w = Math.max(scrollWidth, Y.Dom.getViewportWidth());
- logger.log('getDocumentWidth returning ' + w, 'info', 'Dom');
- return w;
- },
-
- /**
- * Returns the current height of the viewport.
- * @method getViewportHeight
- * @return {Int} The height of the viewable area of the page (excludes scrollbars).
- */
- getViewportHeight: function() {
- var height = self.innerHeight; // Safari, Opera
- var mode = document.compatMode;
-
- if ( (mode || isIE) && !isOpera ) { // IE, Gecko
- height = (mode == 'CSS1Compat') ?
- document.documentElement.clientHeight : // Standards
- document.body.clientHeight; // Quirks
- }
-
- logger.log('getViewportHeight returning ' + height, 'info', 'Dom');
- return height;
- },
-
- /**
- * Returns the current width of the viewport.
- * @method getViewportWidth
- * @return {Int} The width of the viewable area of the page (excludes scrollbars).
- */
-
- getViewportWidth: function() {
- var width = self.innerWidth; // Safari
- var mode = document.compatMode;
-
- if (mode || isIE) { // IE, Gecko, Opera
- width = (mode == 'CSS1Compat') ?
- document.documentElement.clientWidth : // Standards
- document.body.clientWidth; // Quirks
- }
- logger.log('getViewportWidth returning ' + width, 'info', 'Dom');
- return width;
- }
- };
-})();
-/**
- * A region is a representation of an object on a grid. It is defined
- * by the top, right, bottom, left extents, so is rectangular by default. If
- * other shapes are required, this class could be extended to support it.
- * @namespace YAHOO.util
- * @class Region
- * @param {Int} t the top extent
- * @param {Int} r the right extent
- * @param {Int} b the bottom extent
- * @param {Int} l the left extent
- * @constructor
- */
-YAHOO.util.Region = function(t, r, b, l) {
-
- /**
- * The region's top extent
- * @property top
- * @type Int
- */
- this.top = t;
-
- /**
- * The region's top extent as index, for symmetry with set/getXY
- * @property 1
- * @type Int
- */
- this[1] = t;
-
- /**
- * The region's right extent
- * @property right
- * @type int
- */
- this.right = r;
-
- /**
- * The region's bottom extent
- * @property bottom
- * @type Int
- */
- this.bottom = b;
-
- /**
- * The region's left extent
- * @property left
- * @type Int
- */
- this.left = l;
-
- /**
- * The region's left extent as index, for symmetry with set/getXY
- * @property 0
- * @type Int
- */
- this[0] = l;
-};
-
-/**
- * Returns true if this region contains the region passed in
- * @method contains
- * @param {Region} region The region to evaluate
- * @return {Boolean} True if the region is contained with this region,
- * else false
- */
-YAHOO.util.Region.prototype.contains = function(region) {
- return ( region.left >= this.left &&
- region.right <= this.right &&
- region.top >= this.top &&
- region.bottom <= this.bottom );
-
- // this.logger.debug("does " + this + " contain " + region + " ... " + ret);
-};
-
-/**
- * Returns the area of the region
- * @method getArea
- * @return {Int} the region's area
- */
-YAHOO.util.Region.prototype.getArea = function() {
- return ( (this.bottom - this.top) * (this.right - this.left) );
-};
-
-/**
- * Returns the region where the passed in region overlaps with this one
- * @method intersect
- * @param {Region} region The region that intersects
- * @return {Region} The overlap region, or null if there is no overlap
- */
-YAHOO.util.Region.prototype.intersect = function(region) {
- var t = Math.max( this.top, region.top );
- var r = Math.min( this.right, region.right );
- var b = Math.min( this.bottom, region.bottom );
- var l = Math.max( this.left, region.left );
-
- if (b >= t && r >= l) {
- return new YAHOO.util.Region(t, r, b, l);
- } else {
- return null;
- }
-};
-
-/**
- * Returns the region representing the smallest region that can contain both
- * the passed in region and this region.
- * @method union
- * @param {Region} region The region that to create the union with
- * @return {Region} The union region
- */
-YAHOO.util.Region.prototype.union = function(region) {
- var t = Math.min( this.top, region.top );
- var r = Math.max( this.right, region.right );
- var b = Math.max( this.bottom, region.bottom );
- var l = Math.min( this.left, region.left );
-
- return new YAHOO.util.Region(t, r, b, l);
-};
-
-/**
- * toString
- * @method toString
- * @return string the region properties
- */
-YAHOO.util.Region.prototype.toString = function() {
- return ( "Region {" +
- "top: " + this.top +
- ", right: " + this.right +
- ", bottom: " + this.bottom +
- ", left: " + this.left +
- "}" );
-};
-
-/**
- * Returns a region that is occupied by the DOM element
- * @method getRegion
- * @param {HTMLElement} el The element
- * @return {Region} The region that the element occupies
- * @static
- */
-YAHOO.util.Region.getRegion = function(el) {
- var p = YAHOO.util.Dom.getXY(el);
-
- var t = p[1];
- var r = p[0] + el.offsetWidth;
- var b = p[1] + el.offsetHeight;
- var l = p[0];
-
- return new YAHOO.util.Region(t, r, b, l);
-};
-
-/////////////////////////////////////////////////////////////////////////////
-
-
-/**
- * A point is a region that is special in that it represents a single point on
- * the grid.
- * @namespace YAHOO.util
- * @class Point
- * @param {Int} x The X position of the point
- * @param {Int} y The Y position of the point
- * @constructor
- * @extends YAHOO.util.Region
- */
-YAHOO.util.Point = function(x, y) {
- if (x instanceof Array) { // accept output from Dom.getXY
- y = x[1];
- x = x[0];
- }
-
- /**
- * The X position of the point, which is also the right, left and index zero (for Dom.getXY symmetry)
- * @property x
- * @type Int
- */
-
- this.x = this.right = this.left = this[0] = x;
-
- /**
- * The Y position of the point, which is also the top, bottom and index one (for Dom.getXY symmetry)
- * @property y
- * @type Int
- */
- this.y = this.top = this.bottom = this[1] = y;
-};
-
-YAHOO.util.Point.prototype = new YAHOO.util.Region();
-
generated by cgit v1.2.3-1-g7c22 (git 2.25.1) at 2024-06-02 12:45:16 +0000