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/** $Id: domLib.js 1952 2005-07-17 16:24:05Z dallen $ */
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* Copyright 2002-2005 Dan Allen, Mojavelinux.com (dan.allen@mojavelinux.com)
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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* http://www.apache.org/licenses/LICENSE-2.0
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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* Title: DOM Library Core
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* A set of commonly used functions that make it easier to create javascript
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* applications that rely on the DOM.
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* Maintainer: Dan Allen <dan.allen@mojavelinux.com>
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* Maintainer: Jason Rust <jrust@rustyparts.com>
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// {{{ global constants (DO NOT EDIT)
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// -- Browser Detection --
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var domLib_userAgent = navigator.userAgent.toLowerCase();
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var domLib_isMac = navigator.appVersion.indexOf('Mac') != -1;
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var domLib_isWin = domLib_userAgent.indexOf('windows') != -1;
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// NOTE: could use window.opera for detecting Opera
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var domLib_isOpera = domLib_userAgent.indexOf('opera') != -1;
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var domLib_isOpera7up = domLib_userAgent.match(/opera.(7|8)/i);
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var domLib_isSafari = domLib_userAgent.indexOf('safari') != -1;
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var domLib_isKonq = domLib_userAgent.indexOf('konqueror') != -1;
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// Both konqueror and safari use the khtml rendering engine
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var domLib_isKHTML = (domLib_isKonq || domLib_isSafari || domLib_userAgent.indexOf('khtml') != -1);
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var domLib_isIE = (!domLib_isKHTML && !domLib_isOpera && (domLib_userAgent.indexOf('msie 5') != -1 || domLib_userAgent.indexOf('msie 6') != -1 || domLib_userAgent.indexOf('msie 7') != -1));
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var domLib_isIE5up = domLib_isIE;
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var domLib_isIE50 = (domLib_isIE && domLib_userAgent.indexOf('msie 5.0') != -1);
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var domLib_isIE55 = (domLib_isIE && domLib_userAgent.indexOf('msie 5.5') != -1);
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var domLib_isIE5 = (domLib_isIE50 || domLib_isIE55);
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// safari and konq may use string "khtml, like gecko", so check for destinctive /
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var domLib_isGecko = domLib_userAgent.indexOf('gecko/') != -1;
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var domLib_isMacIE = (domLib_isIE && domLib_isMac);
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var domLib_isIE55up = domLib_isIE5up && !domLib_isIE50 && !domLib_isMacIE;
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var domLib_isIE6up = domLib_isIE55up && !domLib_isIE55;
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// -- Browser Abilities --
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var domLib_standardsMode = (document.compatMode && document.compatMode == 'CSS1Compat');
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var domLib_useLibrary = (domLib_isOpera7up || domLib_isKHTML || domLib_isIE5up || domLib_isGecko || domLib_isMacIE || document.defaultView);
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var domLib_hasBrokenTimeout = (domLib_isMacIE || (domLib_isKonq && domLib_userAgent.match(/konqueror\/3.([2-9])/) === null));
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var domLib_canFade = (domLib_isGecko || domLib_isIE || domLib_isSafari || domLib_isOpera);
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var domLib_canDrawOverSelect = (domLib_isMac || domLib_isOpera || domLib_isGecko);
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var domLib_canDrawOverFlash = (domLib_isMac || domLib_isWin);
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// -- Event Variables --
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var domLib_eventTarget = domLib_isIE ? 'srcElement' : 'currentTarget';
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var domLib_eventButton = domLib_isIE ? 'button' : 'which';
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var domLib_eventTo = domLib_isIE ? 'toElement' : 'relatedTarget';
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var domLib_stylePointer = domLib_isIE ? 'hand' : 'pointer';
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// NOTE: a bug exists in Opera that prevents maxWidth from being set to 'none', so we make it huge
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var domLib_styleNoMaxWidth = domLib_isOpera ? '10000px' : 'none';
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var domLib_hidePosition = '-1000px';
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var domLib_scrollbarWidth = 14;
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var domLib_autoId = 1;
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var domLib_zIndex = 100;
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var domLib_collisionElements;
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var domLib_collisionsCached = false;
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var domLib_timeoutStateId = 0;
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var domLib_timeoutStates = new Hash();
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// {{{ DOM enhancements
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if (!document.ELEMENT_NODE)
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document.ELEMENT_NODE = 1;
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document.ATTRIBUTE_NODE = 2;
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document.TEXT_NODE = 3;
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document.DOCUMENT_NODE = 9;
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document.DOCUMENT_FRAGMENT_NODE = 11;
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function domLib_clone(obj)
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if (value !== null && typeof(value) == 'object' && value != window && !value.nodeType)
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copy[i] = domLib_clone(value);
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this.numericLength = 0;
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this.elementData = [];
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for (var i = 0; i < arguments.length; i += 2)
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if (typeof(arguments[i + 1]) != 'undefined')
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this.elementData[arguments[i]] = arguments[i + 1];
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if (arguments[i] == parseInt(arguments[i]))
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this.numericLength++;
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// using prototype as opposed to inner functions saves on memory
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Hash.prototype.get = function(in_key)
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return this.elementData[in_key];
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Hash.prototype.set = function(in_key, in_value)
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if (typeof(in_value) != 'undefined')
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if (typeof(this.elementData[in_key]) == 'undefined')
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if (in_key == parseInt(in_key))
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this.numericLength++;
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this.elementData[in_key] = in_value;
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return this.elementData[in_key];
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Hash.prototype.remove = function(in_key)
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if (typeof(this.elementData[in_key]) != 'undefined')
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if (in_key == parseInt(in_key))
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this.numericLength--;
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tmp_value = this.elementData[in_key];
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delete this.elementData[in_key];
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Hash.prototype.size = function()
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Hash.prototype.has = function(in_key)
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return typeof(this.elementData[in_key]) != 'undefined';
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Hash.prototype.find = function(in_obj)
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for (var tmp_key in this.elementData)
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if (this.elementData[tmp_key] == in_obj)
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Hash.prototype.merge = function(in_hash)
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for (var tmp_key in in_hash.elementData)
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if (typeof(this.elementData[tmp_key]) == 'undefined')
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if (tmp_key == parseInt(tmp_key))
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this.numericLength++;
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this.elementData[tmp_key] = in_hash.elementData[tmp_key];
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Hash.prototype.compare = function(in_hash)
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if (this.length != in_hash.length)
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for (var tmp_key in this.elementData)
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if (this.elementData[tmp_key] != in_hash.elementData[tmp_key])
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// {{{ domLib_isDescendantOf()
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function domLib_isDescendantOf(in_object, in_ancestor)
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if (in_object == in_ancestor)
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while (in_object != document.documentElement)
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if ((tmp_object = in_object.offsetParent) && tmp_object == in_ancestor)
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else if ((tmp_object = in_object.parentNode) == in_ancestor)
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in_object = tmp_object;
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// in case we get some wierd error, just assume we haven't gone out yet
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// {{{ domLib_detectCollisions()
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* For any given target element, determine if elements on the page
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* are colliding with it that do not obey the rules of z-index.
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function domLib_detectCollisions(in_object, in_recover, in_useCache)
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// the reason for the cache is that if the root menu is built before
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// the page is done loading, then it might not find all the elements.
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// so really the only time you don't use cache is when building the
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// menu as part of the page load
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if (!domLib_collisionsCached)
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if (!domLib_canDrawOverFlash)
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tags[tags.length] = 'object';
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if (!domLib_canDrawOverSelect)
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tags[tags.length] = 'select';
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domLib_collisionElements = domLib_getElementsByTagNames(tags, true);
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domLib_collisionsCached = in_useCache;
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// if we don't have a tip, then unhide selects
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for (var cnt = 0; cnt < domLib_collisionElements.length; cnt++)
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var thisElement = domLib_collisionElements[cnt];
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if (!thisElement.hideList)
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thisElement.hideList = new Hash();
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thisElement.hideList.remove(in_object.id);
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if (!thisElement.hideList.length)
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domLib_collisionElements[cnt].style.visibility = 'visible';
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domLib_collisionElements[cnt].style.display = '';
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else if (domLib_collisionElements.length === 0)
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// okay, we have a tip, so hunt and destroy
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var objectOffsets = domLib_getOffsets(in_object);
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for (cnt = 0; cnt < domLib_collisionElements.length; cnt++)
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thisElement = domLib_collisionElements[cnt];
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// if collision element is in active element, move on
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// WARNING: is this too costly?
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if (domLib_isDescendantOf(thisElement, in_object))
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// konqueror only has trouble with multirow selects
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thisElement.tagName == 'SELECT' &&
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(thisElement.size <= 1 && !thisElement.multiple))
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if (!thisElement.hideList)
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thisElement.hideList = new Hash();
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var selectOffsets = domLib_getOffsets(thisElement);
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var center2centerDistance = Math.sqrt(Math.pow(selectOffsets.get('leftCenter') - objectOffsets.get('leftCenter'), 2) + Math.pow(selectOffsets.get('topCenter') - objectOffsets.get('topCenter'), 2));
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var radiusSum = selectOffsets.get('radius') + objectOffsets.get('radius');
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// the encompassing circles are overlapping, get in for a closer look
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if (center2centerDistance < radiusSum)
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// tip is left of select
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if ((objectOffsets.get('leftCenter') <= selectOffsets.get('leftCenter') && objectOffsets.get('right') < selectOffsets.get('left')) ||
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// tip is right of select
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(objectOffsets.get('leftCenter') > selectOffsets.get('leftCenter') && objectOffsets.get('left') > selectOffsets.get('right')) ||
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// tip is above select
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(objectOffsets.get('topCenter') <= selectOffsets.get('topCenter') && objectOffsets.get('bottom') < selectOffsets.get('top')) ||
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// tip is below select
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(objectOffsets.get('topCenter') > selectOffsets.get('topCenter') && objectOffsets.get('top') > selectOffsets.get('bottom')))
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thisElement.hideList.remove(in_object.id);
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if (!thisElement.hideList.length)
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thisElement.style.visibility = 'visible';
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thisElement.style.display = '';
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thisElement.hideList.set(in_object.id, true);
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thisElement.style.visibility = 'hidden';
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thisElement.style.display = 'none';
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// {{{ domLib_getOffsets()
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function domLib_getOffsets(in_object)
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var originalObject = in_object;
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var originalWidth = in_object.offsetWidth;
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var originalHeight = in_object.offsetHeight;
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offsetLeft += in_object.offsetLeft;
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offsetTop += in_object.offsetTop;
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in_object = in_object.offsetParent;
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// MacIE misreports the offsets (even with margin: 0 in body{}), still not perfect
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if (domLib_isMacIE) {
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'right', offsetLeft + originalWidth,
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'bottom', offsetTop + originalHeight,
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'leftCenter', offsetLeft + originalWidth/2,
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'topCenter', offsetTop + originalHeight/2,
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'radius', Math.max(originalWidth, originalHeight) );
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// {{{ domLib_setTimeout()
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function domLib_setTimeout(in_function, in_timeout, in_args)
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if (typeof(in_args) == 'undefined')
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if (in_timeout == -1)
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// timeout event is disabled
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else if (in_timeout === 0)
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in_function(in_args);
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// must make a copy of the arguments so that we release the reference
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var args = domLib_clone(in_args);
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if (!domLib_hasBrokenTimeout)
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return setTimeout(function() { in_function(args); }, in_timeout);
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var id = domLib_timeoutStateId++;
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var data = new Hash();
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data.set('function', in_function);
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data.set('args', args);
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domLib_timeoutStates.set(id, data);
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data.set('timeoutId', setTimeout('domLib_timeoutStates.get(' + id + ').get(\'function\')(domLib_timeoutStates.get(' + id + ').get(\'args\')); domLib_timeoutStates.remove(' + id + ');', in_timeout));
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// {{{ domLib_clearTimeout()
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function domLib_clearTimeout(in_id)
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if (!domLib_hasBrokenTimeout)
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if (domLib_timeoutStates.has(in_id))
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clearTimeout(domLib_timeoutStates.get(in_id).get('timeoutId'));
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domLib_timeoutStates.remove(in_id);
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// {{{ domLib_getEventPosition()
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function domLib_getEventPosition(in_eventObj)
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var eventPosition = new Hash('x', 0, 'y', 0, 'scrollX', 0, 'scrollY', 0);
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// IE varies depending on standard compliance mode
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var doc = (domLib_standardsMode ? document.documentElement : document.body);
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// NOTE: events may fire before the body has been loaded
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eventPosition.set('x', in_eventObj.clientX + doc.scrollLeft);
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eventPosition.set('y', in_eventObj.clientY + doc.scrollTop);
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eventPosition.set('scrollX', doc.scrollLeft);
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eventPosition.set('scrollY', doc.scrollTop);
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eventPosition.set('x', in_eventObj.pageX);
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eventPosition.set('y', in_eventObj.pageY);
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eventPosition.set('scrollX', in_eventObj.pageX - in_eventObj.clientX);
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eventPosition.set('scrollY', in_eventObj.pageY - in_eventObj.clientY);
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return eventPosition;
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// {{{ domLib_cancelBubble()
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function domLib_cancelBubble(in_event)
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var eventObj = in_event ? in_event : window.event;
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eventObj.cancelBubble = true;
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// {{{ domLib_getIFrameReference()
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function domLib_getIFrameReference(in_frame)
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if (domLib_isGecko || domLib_isIE)
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return in_frame.frameElement;
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// we could either do it this way or require an id on the frame
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// equivalent to the name
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var name = in_frame.name;
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if (!name || !in_frame.parent)
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var candidates = in_frame.parent.document.getElementsByTagName('iframe');
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for (var i = 0; i < candidates.length; i++)
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if (candidates[i].name == name)
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return candidates[i];
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// {{{ domLib_getElementsByClass()
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function domLib_getElementsByClass(in_class)
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var elements = domLib_isIE5 ? document.all : document.getElementsByTagName('*');
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for (var i = 0; i < elements.length; i++)
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if ((" " + elements[i].className + " ").indexOf(" " + in_class + " ") != -1)
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matches[cnt++] = elements[i];
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function domLib_getElementsByTagNames(in_list, in_excludeHidden)
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for (var i = 0; i < in_list.length; i++)
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var matches = document.getElementsByTagName(in_list[i]);
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for (var j = 0; j < matches.length; j++)
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if (in_excludeHidden && domLib_getComputedStyle(matches[j], 'visibility') == 'hidden')
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elements[elements.length] = matches[j];
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function domLib_getComputedStyle(in_obj, in_property)
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var humpBackProp = in_property.replace(/-(.)/, function (a, b) { return b.toUpperCase(); });
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return eval('in_obj.currentStyle.' + humpBackProp);
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// getComputedStyle() is broken in konqueror, so let's go for the style object
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else if (domLib_isKonq)
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humpBackProp = in_property.replace(/-(.)/, function (a, b) { return b.toUpperCase(); });
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return eval('in_obj.style.' + in_property);
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return document.defaultView.getComputedStyle(in_obj, null).getPropertyValue(in_property);
added
removed
lib/scripts/domLib.js
