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jqLite.js
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1041 lines (890 loc) · 32.1 KB
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'use strict';
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
* Any commits to this file should be reviewed with security in mind. *
* Changes to this file can potentially create security vulnerabilities. *
* An approval from 2 Core members with history of modifying *
* this file is required. *
* *
* Does the change somehow allow for arbitrary javascript to be executed? *
* Or allows for someone to change the prototype of built-in objects? *
* Or gives undesired access to variables likes document or window? *
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
/* global JQLitePrototype: true,
addEventListenerFn: true,
removeEventListenerFn: true,
BOOLEAN_ATTR: true,
ALIASED_ATTR: true,
*/
//////////////////////////////////
//JQLite
//////////////////////////////////
/**
* @ngdoc function
* @name angular.element
* @module ng
* @kind function
*
* @description
* Wraps a raw DOM element or HTML string as a [jQuery](http://jquery.com) element.
*
* If jQuery is available, `angular.element` is an alias for the
* [jQuery](http://api.jquery.com/jQuery/) function. If jQuery is not available, `angular.element`
* delegates to Angular's built-in subset of jQuery, called "jQuery lite" or "jqLite."
*
* <div class="alert alert-success">jqLite is a tiny, API-compatible subset of jQuery that allows
* Angular to manipulate the DOM in a cross-browser compatible way. **jqLite** implements only the most
* commonly needed functionality with the goal of having a very small footprint.</div>
*
* To use `jQuery`, simply ensure it is loaded before the `angular.js` file.
*
* <div class="alert">**Note:** all element references in Angular are always wrapped with jQuery or
* jqLite; they are never raw DOM references.</div>
*
* ## Angular's jqLite
* jqLite provides only the following jQuery methods:
*
* - [`addClass()`](http://api.jquery.com/addClass/)
* - [`after()`](http://api.jquery.com/after/)
* - [`append()`](http://api.jquery.com/append/)
* - [`attr()`](http://api.jquery.com/attr/) - Does not support functions as parameters
* - [`bind()`](http://api.jquery.com/bind/) - Does not support namespaces, selectors or eventData
* - [`children()`](http://api.jquery.com/children/) - Does not support selectors
* - [`clone()`](http://api.jquery.com/clone/)
* - [`contents()`](http://api.jquery.com/contents/)
* - [`css()`](http://api.jquery.com/css/) - Only retrieves inline-styles, does not call `getComputedStyle()`. As a setter, does not convert numbers to strings or append 'px'.
* - [`data()`](http://api.jquery.com/data/)
* - [`detach()`](http://api.jquery.com/detach/)
* - [`empty()`](http://api.jquery.com/empty/)
* - [`eq()`](http://api.jquery.com/eq/)
* - [`find()`](http://api.jquery.com/find/) - Limited to lookups by tag name
* - [`hasClass()`](http://api.jquery.com/hasClass/)
* - [`html()`](http://api.jquery.com/html/)
* - [`next()`](http://api.jquery.com/next/) - Does not support selectors
* - [`on()`](http://api.jquery.com/on/) - Does not support namespaces, selectors or eventData
* - [`off()`](http://api.jquery.com/off/) - Does not support namespaces or selectors
* - [`one()`](http://api.jquery.com/one/) - Does not support namespaces or selectors
* - [`parent()`](http://api.jquery.com/parent/) - Does not support selectors
* - [`prepend()`](http://api.jquery.com/prepend/)
* - [`prop()`](http://api.jquery.com/prop/)
* - [`ready()`](http://api.jquery.com/ready/)
* - [`remove()`](http://api.jquery.com/remove/)
* - [`removeAttr()`](http://api.jquery.com/removeAttr/)
* - [`removeClass()`](http://api.jquery.com/removeClass/)
* - [`removeData()`](http://api.jquery.com/removeData/)
* - [`replaceWith()`](http://api.jquery.com/replaceWith/)
* - [`text()`](http://api.jquery.com/text/)
* - [`toggleClass()`](http://api.jquery.com/toggleClass/)
* - [`triggerHandler()`](http://api.jquery.com/triggerHandler/) - Passes a dummy event object to handlers.
* - [`unbind()`](http://api.jquery.com/unbind/) - Does not support namespaces
* - [`val()`](http://api.jquery.com/val/)
* - [`wrap()`](http://api.jquery.com/wrap/)
*
* ## jQuery/jqLite Extras
* Angular also provides the following additional methods and events to both jQuery and jqLite:
*
* ### Events
* - `$destroy` - AngularJS intercepts all jqLite/jQuery's DOM destruction apis and fires this event
* on all DOM nodes being removed. This can be used to clean up any 3rd party bindings to the DOM
* element before it is removed.
*
* ### Methods
* - `controller(name)` - retrieves the controller of the current element or its parent. By default
* retrieves controller associated with the `ngController` directive. If `name` is provided as
* camelCase directive name, then the controller for this directive will be retrieved (e.g.
* `'ngModel'`).
* - `injector()` - retrieves the injector of the current element or its parent.
* - `scope()` - retrieves the {@link ng.$rootScope.Scope scope} of the current
* element or its parent. Requires {@link guide/production#disabling-debug-data Debug Data} to
* be enabled.
* - `isolateScope()` - retrieves an isolate {@link ng.$rootScope.Scope scope} if one is attached directly to the
* current element. This getter should be used only on elements that contain a directive which starts a new isolate
* scope. Calling `scope()` on this element always returns the original non-isolate scope.
* Requires {@link guide/production#disabling-debug-data Debug Data} to be enabled.
* - `inheritedData()` - same as `data()`, but walks up the DOM until a value is found or the top
* parent element is reached.
*
* @param {string|DOMElement} element HTML string or DOMElement to be wrapped into jQuery.
* @returns {Object} jQuery object.
*/
JQLite.expando = 'ng339';
var jqCache = JQLite.cache = {},
jqId = 1,
addEventListenerFn = function(element, type, fn) {
element.addEventListener(type, fn, false);
},
removeEventListenerFn = function(element, type, fn) {
element.removeEventListener(type, fn, false);
};
/*
* !!! This is an undocumented "private" function !!!
*/
JQLite._data = function(node) {
//jQuery always returns an object on cache miss
return this.cache[node[this.expando]] || {};
};
function jqNextId() { return ++jqId; }
var SPECIAL_CHARS_REGEXP = /([\:\-\_]+(.))/g;
var MOZ_HACK_REGEXP = /^moz([A-Z])/;
var MOUSE_EVENT_MAP= { mouseleave: "mouseout", mouseenter: "mouseover"};
var jqLiteMinErr = minErr('jqLite');
/**
* Converts snake_case to camelCase.
* Also there is special case for Moz prefix starting with upper case letter.
* @param name Name to normalize
*/
function camelCase(name) {
return name.
replace(SPECIAL_CHARS_REGEXP, function(_, separator, letter, offset) {
return offset ? letter.toUpperCase() : letter;
}).
replace(MOZ_HACK_REGEXP, 'Moz$1');
}
var SINGLE_TAG_REGEXP = /^<(\w+)\s*\/?>(?:<\/\1>|)$/;
var HTML_REGEXP = /<|&#?\w+;/;
var TAG_NAME_REGEXP = /<([\w:]+)/;
var XHTML_TAG_REGEXP = /<(?!area|br|col|embed|hr|img|input|link|meta|param)(([\w:]+)[^>]*)\/>/gi;
var wrapMap = {
'option': [1, '<select multiple="multiple">', '</select>'],
'thead': [1, '<table>', '</table>'],
'col': [2, '<table><colgroup>', '</colgroup></table>'],
'tr': [2, '<table><tbody>', '</tbody></table>'],
'td': [3, '<table><tbody><tr>', '</tr></tbody></table>'],
'_default': [0, "", ""]
};
wrapMap.optgroup = wrapMap.option;
wrapMap.tbody = wrapMap.tfoot = wrapMap.colgroup = wrapMap.caption = wrapMap.thead;
wrapMap.th = wrapMap.td;
function jqLiteIsTextNode(html) {
return !HTML_REGEXP.test(html);
}
function jqLiteAcceptsData(node) {
// The window object can accept data but has no nodeType
// Otherwise we are only interested in elements (1) and documents (9)
var nodeType = node.nodeType;
return nodeType === NODE_TYPE_ELEMENT || !nodeType || nodeType === NODE_TYPE_DOCUMENT;
}
function jqLiteBuildFragment(html, context) {
var tmp, tag, wrap,
fragment = context.createDocumentFragment(),
nodes = [], i;
if (jqLiteIsTextNode(html)) {
// Convert non-html into a text node
nodes.push(context.createTextNode(html));
} else {
// Convert html into DOM nodes
tmp = tmp || fragment.appendChild(context.createElement("div"));
tag = (TAG_NAME_REGEXP.exec(html) || ["", ""])[1].toLowerCase();
wrap = wrapMap[tag] || wrapMap._default;
tmp.innerHTML = wrap[1] + html.replace(XHTML_TAG_REGEXP, "<$1></$2>") + wrap[2];
// Descend through wrappers to the right content
i = wrap[0];
while (i--) {
tmp = tmp.lastChild;
}
nodes = concat(nodes, tmp.childNodes);
tmp = fragment.firstChild;
tmp.textContent = "";
}
// Remove wrapper from fragment
fragment.textContent = "";
fragment.innerHTML = ""; // Clear inner HTML
forEach(nodes, function(node) {
fragment.appendChild(node);
});
return fragment;
}
function jqLiteParseHTML(html, context) {
context = context || document;
var parsed;
if ((parsed = SINGLE_TAG_REGEXP.exec(html))) {
return [context.createElement(parsed[1])];
}
if ((parsed = jqLiteBuildFragment(html, context))) {
return parsed.childNodes;
}
return [];
}
/////////////////////////////////////////////
function JQLite(element) {
if (element instanceof JQLite) {
return element;
}
var argIsString;
if (isString(element)) {
element = trim(element);
argIsString = true;
}
if (!(this instanceof JQLite)) {
if (argIsString && element.charAt(0) != '<') {
throw jqLiteMinErr('nosel', 'Looking up elements via selectors is not supported by jqLite! See: http://docs.angularjs.org/api/angular.element');
}
return new JQLite(element);
}
if (argIsString) {
jqLiteAddNodes(this, jqLiteParseHTML(element));
} else {
jqLiteAddNodes(this, element);
}
}
function jqLiteClone(element) {
return element.cloneNode(true);
}
function jqLiteDealoc(element, onlyDescendants) {
if (!onlyDescendants) jqLiteRemoveData(element);
if (element.querySelectorAll) {
var descendants = element.querySelectorAll('*');
for (var i = 0, l = descendants.length; i < l; i++) {
jqLiteRemoveData(descendants[i]);
}
}
}
function jqLiteOff(element, type, fn, unsupported) {
if (isDefined(unsupported)) throw jqLiteMinErr('offargs', 'jqLite#off() does not support the `selector` argument');
var expandoStore = jqLiteExpandoStore(element);
var events = expandoStore && expandoStore.events;
var handle = expandoStore && expandoStore.handle;
if (!handle) return; //no listeners registered
if (!type) {
for (type in events) {
if (type !== '$destroy') {
removeEventListenerFn(element, type, handle);
}
delete events[type];
}
} else {
forEach(type.split(' '), function(type) {
if (isDefined(fn)) {
var listenerFns = events[type];
arrayRemove(listenerFns || [], fn);
if (listenerFns && listenerFns.length > 0) {
return;
}
}
removeEventListenerFn(element, type, handle);
delete events[type];
});
}
}
function jqLiteRemoveData(element, name) {
var expandoId = element.ng339;
var expandoStore = expandoId && jqCache[expandoId];
if (expandoStore) {
if (name) {
delete expandoStore.data[name];
return;
}
if (expandoStore.handle) {
if (expandoStore.events.$destroy) {
expandoStore.handle({}, '$destroy');
}
jqLiteOff(element);
}
delete jqCache[expandoId];
element.ng339 = undefined; // don't delete DOM expandos. IE and Chrome don't like it
}
}
function jqLiteExpandoStore(element, createIfNecessary) {
var expandoId = element.ng339,
expandoStore = expandoId && jqCache[expandoId];
if (createIfNecessary && !expandoStore) {
element.ng339 = expandoId = jqNextId();
expandoStore = jqCache[expandoId] = {events: {}, data: {}, handle: undefined};
}
return expandoStore;
}
function jqLiteData(element, key, value) {
if (jqLiteAcceptsData(element)) {
var isSimpleSetter = isDefined(value);
var isSimpleGetter = !isSimpleSetter && key && !isObject(key);
var massGetter = !key;
var expandoStore = jqLiteExpandoStore(element, !isSimpleGetter);
var data = expandoStore && expandoStore.data;
if (isSimpleSetter) { // data('key', value)
data[key] = value;
} else {
if (massGetter) { // data()
return data;
} else {
if (isSimpleGetter) { // data('key')
// don't force creation of expandoStore if it doesn't exist yet
return data && data[key];
} else { // mass-setter: data({key1: val1, key2: val2})
extend(data, key);
}
}
}
}
}
function jqLiteHasClass(element, selector) {
if (!element.getAttribute) return false;
return ((" " + (element.getAttribute('class') || '') + " ").replace(/[\n\t]/g, " ").
indexOf(" " + selector + " ") > -1);
}
function jqLiteRemoveClass(element, cssClasses) {
if (cssClasses && element.setAttribute) {
forEach(cssClasses.split(' '), function(cssClass) {
element.setAttribute('class', trim(
(" " + (element.getAttribute('class') || '') + " ")
.replace(/[\n\t]/g, " ")
.replace(" " + trim(cssClass) + " ", " "))
);
});
}
}
function jqLiteAddClass(element, cssClasses) {
if (cssClasses && element.setAttribute) {
var existingClasses = (' ' + (element.getAttribute('class') || '') + ' ')
.replace(/[\n\t]/g, " ");
forEach(cssClasses.split(' '), function(cssClass) {
cssClass = trim(cssClass);
if (existingClasses.indexOf(' ' + cssClass + ' ') === -1) {
existingClasses += cssClass + ' ';
}
});
element.setAttribute('class', trim(existingClasses));
}
}
function jqLiteAddNodes(root, elements) {
// THIS CODE IS VERY HOT. Don't make changes without benchmarking.
if (elements) {
// if a Node (the most common case)
if (elements.nodeType) {
root[root.length++] = elements;
} else {
var length = elements.length;
// if an Array or NodeList and not a Window
if (typeof length === 'number' && elements.window !== elements) {
if (length) {
for (var i = 0; i < length; i++) {
root[root.length++] = elements[i];
}
}
} else {
root[root.length++] = elements;
}
}
}
}
function jqLiteController(element, name) {
return jqLiteInheritedData(element, '$' + (name || 'ngController') + 'Controller');
}
function jqLiteInheritedData(element, name, value) {
// if element is the document object work with the html element instead
// this makes $(document).scope() possible
if (element.nodeType == NODE_TYPE_DOCUMENT) {
element = element.documentElement;
}
var names = isArray(name) ? name : [name];
while (element) {
for (var i = 0, ii = names.length; i < ii; i++) {
if ((value = jqLite.data(element, names[i])) !== undefined) return value;
}
// If dealing with a document fragment node with a host element, and no parent, use the host
// element as the parent. This enables directives within a Shadow DOM or polyfilled Shadow DOM
// to lookup parent controllers.
element = element.parentNode || (element.nodeType === NODE_TYPE_DOCUMENT_FRAGMENT && element.host);
}
}
function jqLiteEmpty(element) {
jqLiteDealoc(element, true);
while (element.firstChild) {
element.removeChild(element.firstChild);
}
}
function jqLiteRemove(element, keepData) {
if (!keepData) jqLiteDealoc(element);
var parent = element.parentNode;
if (parent) parent.removeChild(element);
}
function jqLiteDocumentLoaded(action, win) {
win = win || window;
if (win.document.readyState === 'complete') {
// Force the action to be run async for consistent behaviour
// from the action's point of view
// i.e. it will definitely not be in a $apply
win.setTimeout(action);
} else {
// No need to unbind this handler as load is only ever called once
jqLite(win).on('load', action);
}
}
//////////////////////////////////////////
// Functions which are declared directly.
//////////////////////////////////////////
var JQLitePrototype = JQLite.prototype = {
ready: function(fn) {
var fired = false;
function trigger() {
if (fired) return;
fired = true;
fn();
}
// check if document is already loaded
if (document.readyState === 'complete') {
setTimeout(trigger);
} else {
this.on('DOMContentLoaded', trigger); // works for modern browsers and IE9
// we can not use jqLite since we are not done loading and jQuery could be loaded later.
// jshint -W064
JQLite(window).on('load', trigger); // fallback to window.onload for others
// jshint +W064
}
},
toString: function() {
var value = [];
forEach(this, function(e) { value.push('' + e);});
return '[' + value.join(', ') + ']';
},
eq: function(index) {
return (index >= 0) ? jqLite(this[index]) : jqLite(this[this.length + index]);
},
length: 0,
push: push,
sort: [].sort,
splice: [].splice
};
//////////////////////////////////////////
// Functions iterating getter/setters.
// these functions return self on setter and
// value on get.
//////////////////////////////////////////
var BOOLEAN_ATTR = {};
forEach('multiple,selected,checked,disabled,readOnly,required,open'.split(','), function(value) {
BOOLEAN_ATTR[lowercase(value)] = value;
});
var BOOLEAN_ELEMENTS = {};
forEach('input,select,option,textarea,button,form,details'.split(','), function(value) {
BOOLEAN_ELEMENTS[value] = true;
});
var ALIASED_ATTR = {
'ngMinlength': 'minlength',
'ngMaxlength': 'maxlength',
'ngMin': 'min',
'ngMax': 'max',
'ngPattern': 'pattern'
};
function getBooleanAttrName(element, name) {
// check dom last since we will most likely fail on name
var booleanAttr = BOOLEAN_ATTR[name.toLowerCase()];
// booleanAttr is here twice to minimize DOM access
return booleanAttr && BOOLEAN_ELEMENTS[nodeName_(element)] && booleanAttr;
}
function getAliasedAttrName(element, name) {
var nodeName = element.nodeName;
return (nodeName === 'INPUT' || nodeName === 'TEXTAREA') && ALIASED_ATTR[name];
}
forEach({
data: jqLiteData,
removeData: jqLiteRemoveData
}, function(fn, name) {
JQLite[name] = fn;
});
forEach({
data: jqLiteData,
inheritedData: jqLiteInheritedData,
scope: function(element) {
// Can't use jqLiteData here directly so we stay compatible with jQuery!
return jqLite.data(element, '$scope') || jqLiteInheritedData(element.parentNode || element, ['$isolateScope', '$scope']);
},
isolateScope: function(element) {
// Can't use jqLiteData here directly so we stay compatible with jQuery!
return jqLite.data(element, '$isolateScope') || jqLite.data(element, '$isolateScopeNoTemplate');
},
controller: jqLiteController,
injector: function(element) {
return jqLiteInheritedData(element, '$injector');
},
removeAttr: function(element, name) {
element.removeAttribute(name);
},
hasClass: jqLiteHasClass,
css: function(element, name, value) {
name = camelCase(name);
if (isDefined(value)) {
element.style[name] = value;
} else {
return element.style[name];
}
},
attr: function(element, name, value) {
var nodeType = element.nodeType;
if (nodeType === NODE_TYPE_TEXT || nodeType === NODE_TYPE_ATTRIBUTE || nodeType === NODE_TYPE_COMMENT) {
return;
}
var lowercasedName = lowercase(name);
if (BOOLEAN_ATTR[lowercasedName]) {
if (isDefined(value)) {
if (!!value) {
element[name] = true;
element.setAttribute(name, lowercasedName);
} else {
element[name] = false;
element.removeAttribute(lowercasedName);
}
} else {
return (element[name] ||
(element.attributes.getNamedItem(name) || noop).specified)
? lowercasedName
: undefined;
}
} else if (isDefined(value)) {
element.setAttribute(name, value);
} else if (element.getAttribute) {
// the extra argument "2" is to get the right thing for a.href in IE, see jQuery code
// some elements (e.g. Document) don't have get attribute, so return undefined
var ret = element.getAttribute(name, 2);
// normalize non-existing attributes to undefined (as jQuery)
return ret === null ? undefined : ret;
}
},
prop: function(element, name, value) {
if (isDefined(value)) {
element[name] = value;
} else {
return element[name];
}
},
text: (function() {
getText.$dv = '';
return getText;
function getText(element, value) {
if (isUndefined(value)) {
var nodeType = element.nodeType;
return (nodeType === NODE_TYPE_ELEMENT || nodeType === NODE_TYPE_TEXT) ? element.textContent : '';
}
element.textContent = value;
}
})(),
val: function(element, value) {
if (isUndefined(value)) {
if (element.multiple && nodeName_(element) === 'select') {
var result = [];
forEach(element.options, function(option) {
if (option.selected) {
result.push(option.value || option.text);
}
});
return result.length === 0 ? null : result;
}
return element.value;
}
element.value = value;
},
html: function(element, value) {
if (isUndefined(value)) {
return element.innerHTML;
}
jqLiteDealoc(element, true);
element.innerHTML = value;
},
empty: jqLiteEmpty
}, function(fn, name) {
/**
* Properties: writes return selection, reads return first value
*/
JQLite.prototype[name] = function(arg1, arg2) {
var i, key;
var nodeCount = this.length;
// jqLiteHasClass has only two arguments, but is a getter-only fn, so we need to special-case it
// in a way that survives minification.
// jqLiteEmpty takes no arguments but is a setter.
if (fn !== jqLiteEmpty &&
(((fn.length == 2 && (fn !== jqLiteHasClass && fn !== jqLiteController)) ? arg1 : arg2) === undefined)) {
if (isObject(arg1)) {
// we are a write, but the object properties are the key/values
for (i = 0; i < nodeCount; i++) {
if (fn === jqLiteData) {
// data() takes the whole object in jQuery
fn(this[i], arg1);
} else {
for (key in arg1) {
fn(this[i], key, arg1[key]);
}
}
}
// return self for chaining
return this;
} else {
// we are a read, so read the first child.
// TODO: do we still need this?
var value = fn.$dv;
// Only if we have $dv do we iterate over all, otherwise it is just the first element.
var jj = (value === undefined) ? Math.min(nodeCount, 1) : nodeCount;
for (var j = 0; j < jj; j++) {
var nodeValue = fn(this[j], arg1, arg2);
value = value ? value + nodeValue : nodeValue;
}
return value;
}
} else {
// we are a write, so apply to all children
for (i = 0; i < nodeCount; i++) {
fn(this[i], arg1, arg2);
}
// return self for chaining
return this;
}
};
});
function createEventHandler(element, events) {
var eventHandler = function(event, type) {
// jQuery specific api
event.isDefaultPrevented = function() {
return event.defaultPrevented;
};
var eventFns = events[type || event.type];
var eventFnsLength = eventFns ? eventFns.length : 0;
if (!eventFnsLength) return;
if (isUndefined(event.immediatePropagationStopped)) {
var originalStopImmediatePropagation = event.stopImmediatePropagation;
event.stopImmediatePropagation = function() {
event.immediatePropagationStopped = true;
if (event.stopPropagation) {
event.stopPropagation();
}
if (originalStopImmediatePropagation) {
originalStopImmediatePropagation.call(event);
}
};
}
event.isImmediatePropagationStopped = function() {
return event.immediatePropagationStopped === true;
};
// Copy event handlers in case event handlers array is modified during execution.
if ((eventFnsLength > 1)) {
eventFns = shallowCopy(eventFns);
}
for (var i = 0; i < eventFnsLength; i++) {
if (!event.isImmediatePropagationStopped()) {
eventFns[i].call(element, event);
}
}
};
// TODO: this is a hack for angularMocks/clearDataCache that makes it possible to deregister all
// events on `element`
eventHandler.elem = element;
return eventHandler;
}
//////////////////////////////////////////
// Functions iterating traversal.
// These functions chain results into a single
// selector.
//////////////////////////////////////////
forEach({
removeData: jqLiteRemoveData,
on: function jqLiteOn(element, type, fn, unsupported) {
if (isDefined(unsupported)) throw jqLiteMinErr('onargs', 'jqLite#on() does not support the `selector` or `eventData` parameters');
// Do not add event handlers to non-elements because they will not be cleaned up.
if (!jqLiteAcceptsData(element)) {
return;
}
var expandoStore = jqLiteExpandoStore(element, true);
var events = expandoStore.events;
var handle = expandoStore.handle;
if (!handle) {
handle = expandoStore.handle = createEventHandler(element, events);
}
// http://jsperf.com/string-indexof-vs-split
var types = type.indexOf(' ') >= 0 ? type.split(' ') : [type];
var i = types.length;
while (i--) {
type = types[i];
var eventFns = events[type];
if (!eventFns) {
events[type] = [];
if (type === 'mouseenter' || type === 'mouseleave') {
// Refer to jQuery's implementation of mouseenter & mouseleave
// Read about mouseenter and mouseleave:
// http://www.quirksmode.org/js/events_mouse.html#link8
jqLiteOn(element, MOUSE_EVENT_MAP[type], function(event) {
var target = this, related = event.relatedTarget;
// For mousenter/leave call the handler if related is outside the target.
// NB: No relatedTarget if the mouse left/entered the browser window
if (!related || (related !== target && !target.contains(related))) {
handle(event, type);
}
});
} else {
if (type !== '$destroy') {
addEventListenerFn(element, type, handle);
}
}
eventFns = events[type];
}
eventFns.push(fn);
}
},
off: jqLiteOff,
one: function(element, type, fn) {
element = jqLite(element);
//add the listener twice so that when it is called
//you can remove the original function and still be
//able to call element.off(ev, fn) normally
element.on(type, function onFn() {
element.off(type, fn);
element.off(type, onFn);
});
element.on(type, fn);
},
replaceWith: function(element, replaceNode) {
var index, parent = element.parentNode;
jqLiteDealoc(element);
forEach(new JQLite(replaceNode), function(node) {
if (index) {
parent.insertBefore(node, index.nextSibling);
} else {
parent.replaceChild(node, element);
}
index = node;
});
},
children: function(element) {
var children = [];
forEach(element.childNodes, function(element) {
if (element.nodeType === NODE_TYPE_ELEMENT)
children.push(element);
});
return children;
},
contents: function(element) {
return element.contentDocument || element.childNodes || [];
},
append: function(element, node) {
var nodeType = element.nodeType;
if (nodeType !== NODE_TYPE_ELEMENT && nodeType !== NODE_TYPE_DOCUMENT_FRAGMENT) return;
node = new JQLite(node);
for (var i = 0, ii = node.length; i < ii; i++) {
var child = node[i];
element.appendChild(child);
}
},
prepend: function(element, node) {
if (element.nodeType === NODE_TYPE_ELEMENT) {
var index = element.firstChild;
forEach(new JQLite(node), function(child) {
element.insertBefore(child, index);
});
}
},
wrap: function(element, wrapNode) {
wrapNode = jqLite(wrapNode).eq(0).clone()[0];
var parent = element.parentNode;
if (parent) {
parent.replaceChild(wrapNode, element);
}
wrapNode.appendChild(element);
},
remove: jqLiteRemove,
detach: function(element) {
jqLiteRemove(element, true);
},
after: function(element, newElement) {
var index = element, parent = element.parentNode;
newElement = new JQLite(newElement);
for (var i = 0, ii = newElement.length; i < ii; i++) {
var node = newElement[i];
parent.insertBefore(node, index.nextSibling);
index = node;
}
},
addClass: jqLiteAddClass,
removeClass: jqLiteRemoveClass,
toggleClass: function(element, selector, condition) {
if (selector) {
forEach(selector.split(' '), function(className) {
var classCondition = condition;
if (isUndefined(classCondition)) {
classCondition = !jqLiteHasClass(element, className);
}
(classCondition ? jqLiteAddClass : jqLiteRemoveClass)(element, className);
});
}
},
parent: function(element) {
var parent = element.parentNode;
return parent && parent.nodeType !== NODE_TYPE_DOCUMENT_FRAGMENT ? parent : null;
},
next: function(element) {
return element.nextElementSibling;
},
find: function(element, selector) {
if (element.getElementsByTagName) {
return element.getElementsByTagName(selector);
} else {
return [];
}
},
clone: jqLiteClone,
triggerHandler: function(element, event, extraParameters) {
var dummyEvent, eventFnsCopy, handlerArgs;
var eventName = event.type || event;
var expandoStore = jqLiteExpandoStore(element);
var events = expandoStore && expandoStore.events;
var eventFns = events && events[eventName];
if (eventFns) {
// Create a dummy event to pass to the handlers
dummyEvent = {
preventDefault: function() { this.defaultPrevented = true; },
isDefaultPrevented: function() { return this.defaultPrevented === true; },
stopImmediatePropagation: function() { this.immediatePropagationStopped = true; },
isImmediatePropagationStopped: function() { return this.immediatePropagationStopped === true; },
stopPropagation: noop,
type: eventName,
target: element
};
// If a custom event was provided then extend our dummy event with it
if (event.type) {
dummyEvent = extend(dummyEvent, event);
}
// Copy event handlers in case event handlers array is modified during execution.
eventFnsCopy = shallowCopy(eventFns);
handlerArgs = extraParameters ? [dummyEvent].concat(extraParameters) : [dummyEvent];
forEach(eventFnsCopy, function(fn) {
if (!dummyEvent.isImmediatePropagationStopped()) {
fn.apply(element, handlerArgs);
}
});
}
}
}, function(fn, name) {
/**
* chaining functions
*/
JQLite.prototype[name] = function(arg1, arg2, arg3) {