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base.js
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/*
Copyright 2013, KISSY UI Library v1.40dev
MIT Licensed
build time: Aug 20 18:14
*/
/*
Combined processedModules by KISSY Module Compiler:
event/dom/base/utils
event/dom/base/special
event/dom/base/observer
event/dom/base/object
event/dom/base/observable
event/dom/base/dom-event
event/dom/base/key-codes
event/dom/base/gesture
event/dom/base/special-events
event/dom/base/mouseenter
event/dom/base/valuechange
event/dom/base
*/
/**
* @ignore
* utils for event
* @author yiminghe@gmail.com
*/
KISSY.add('event/dom/base/utils', function (S, Dom) {
var EVENT_GUID = 'ksEventTargetId_'+ S.now(),
doc = S.Env.host.document,
simpleAdd = doc && doc.addEventListener ?
function (el, type, fn, capture) {
if (el.addEventListener) {
el.addEventListener(type, fn, !!capture);
}
} :
function (el, type, fn) {
if (el.attachEvent) {
el.attachEvent('on' + type, fn);
}
},
simpleRemove = doc && doc.removeEventListener ?
function (el, type, fn, capture) {
if (el.removeEventListener) {
el.removeEventListener(type, fn, !!capture);
}
} :
function (el, type, fn) {
if (el.detachEvent) {
el.detachEvent('on' + type, fn);
}
};
return {
simpleAdd: simpleAdd,
simpleRemove: simpleRemove,
data: function (elem, v) {
return Dom.data(elem, EVENT_GUID, v);
},
removeData: function (elem) {
return Dom.removeData(elem, EVENT_GUID);
}
};
}, {
requires: ['dom']
});
/**
* @ignore
* special house for special events
* @author yiminghe@gmail.com
*/
KISSY.add('event/dom/base/special', function () {
return {
};
});
/**
* @ignore
* observer for dom event.
* @author yiminghe@gmail.com
*/
KISSY.add('event/dom/base/observer', function (S, Special, BaseEvent) {
/**
* observer for dom event
* @class KISSY.Event.DomEventObserver
* @extends KISSY.Event.Observer
* @private
*/
function DomEventObserver(cfg) {
DomEventObserver.superclass.constructor.apply(this, arguments);
/**
* filter selector string or function to find right element
* @cfg {String} filter
*/
/**
* extra data as second parameter of listener
* @cfg {*} data
*/
}
S.extend(DomEventObserver, BaseEvent.Observer, {
keys: ['fn', 'filter', 'data', 'context', 'originalType', 'groups', 'last'],
notifyInternal: function (event, ce) {
var self = this,
s, t, ret,
type = event.type,
originalType;
if (originalType = self.originalType) {
event.type = originalType;
} else {
originalType = type;
}
// context undefined 时不能写死在 listener 中，否则不能保证 clone 时的 this
if ((s = Special[originalType]) && s.handle) {
t = s.handle(event, self, ce);
// can handle
if (t && t.length > 0) {
ret = t[0];
}
} else {
ret = self.simpleNotify(event, ce);
}
// notify other mousemove listener
event.type = type;
return ret;
}
});
return DomEventObserver;
}, {
requires: ['./special', 'event/base']
});
/**
* @ignore
* event object for dom
* @author yiminghe@gmail.com
*/
KISSY.add('event/dom/base/object', function (S, BaseEvent, undefined) {
var DOCUMENT = S.Env.host.document,
TRUE = true,
FALSE = false,
commonProps = [
'altKey', 'bubbles', 'cancelable',
'ctrlKey', 'currentTarget', 'eventPhase',
'metaKey', 'shiftKey', 'target',
'timeStamp', 'view', 'type'
],
eventNormalizers = [
{
reg: /^key/,
props: ['char', 'charCode', 'key', 'keyCode', 'which'],
fix: function (event, originalEvent) {
if (event.which == null) {
event.which = originalEvent.charCode != null ? originalEvent.charCode : originalEvent.keyCode;
}
// add metaKey to non-Mac browsers (use ctrl for PC 's and Meta for Macs)
if (event.metaKey === undefined) {
event.metaKey = event.ctrlKey;
}
}
},
{
reg: /^touch/,
props: ['touches', 'changedTouches', 'targetTouches']
},
{
reg: /^gesturechange$/i,
props: ['rotation', 'scale']
},
{
reg: /^(mousewheel|DOMMouseScroll)$/,
props: [],
fix: function (event, originalEvent) {
var deltaX,
deltaY,
delta,
wheelDelta = originalEvent.wheelDelta,
axis = originalEvent.axis,
wheelDeltaY = originalEvent['wheelDeltaY'],
wheelDeltaX = originalEvent['wheelDeltaX'],
detail = originalEvent.detail;
// ie/webkit
if (wheelDelta) {
delta = wheelDelta / 120;
}
// gecko
if (detail) {
// press control e.detail == 1 else e.detail == 3
delta = -(detail % 3 == 0 ? detail / 3 : detail);
}
// Gecko
if (axis !== undefined) {
if (axis === event['HORIZONTAL_AXIS']) {
deltaY = 0;
deltaX = -1 * delta;
} else if (axis === event['VERTICAL_AXIS']) {
deltaX = 0;
deltaY = delta;
}
}
// Webkit
if (wheelDeltaY !== undefined) {
deltaY = wheelDeltaY / 120;
}
if (wheelDeltaX !== undefined) {
deltaX = -1 * wheelDeltaX / 120;
}
// 默认 deltaY (ie)
if (!deltaX && !deltaY) {
deltaY = delta;
}
if (deltaX !== undefined) {
/**
* deltaX of mousewheel event
* @property deltaX
*/
event.deltaX = deltaX;
}
if (deltaY !== undefined) {
/**
* deltaY of mousewheel event
* @property deltaY
*/
event.deltaY = deltaY;
}
if (delta !== undefined) {
/**
* delta of mousewheel event
* @property delta
*/
event.delta = delta;
}
}
},
{
reg: /^mouse|contextmenu|click|mspointer|(^DOMMouseScroll$)/i,
props: [
'buttons', 'clientX', 'clientY', 'button',
'offsetX', 'relatedTarget', 'which',
'fromElement', 'toElement', 'offsetY',
'pageX', 'pageY', 'screenX', 'screenY'
],
fix: function (event, originalEvent) {
var eventDoc, doc, body,
target = event.target,
button = originalEvent.button;
// Calculate pageX/Y if missing and clientX/Y available
if (event.pageX == null && originalEvent.clientX != null) {
eventDoc = target.ownerDocument || DOCUMENT;
doc = eventDoc.documentElement;
body = eventDoc.body;
event.pageX = originalEvent.clientX +
( doc && doc.scrollLeft || body && body.scrollLeft || 0 ) -
( doc && doc.clientLeft || body && body.clientLeft || 0 );
event.pageY = originalEvent.clientY +
( doc && doc.scrollTop || body && body.scrollTop || 0 ) -
( doc && doc.clientTop || body && body.clientTop || 0 );
}
// which for click: 1 === left; 2 === middle; 3 === right
// do not use button
if (!event.which && button !== undefined) {
event.which = ( button & 1 ? 1 : ( button & 2 ? 3 : ( button & 4 ? 2 : 0 ) ) );
}
// add relatedTarget, if necessary
if (!event.relatedTarget && event.fromElement) {
event.relatedTarget = (event.fromElement === target) ? event.toElement : event.fromElement;
}
return event;
}
}
];
function retTrue() {
return TRUE;
}
function retFalse() {
return FALSE;
}
/**
* Do not new by yourself.
*
* KISSY 's dom event system normalizes the event object according to
* W3C standards.
*
* The event object is guaranteed to be passed to
* the event handler.
*
* Most properties from the original event are
* copied over and normalized to the new event object
* according to [W3C standards](http://www.w3.org/TR/dom/#event).
*
* @class KISSY.Event.DomEventObject
* @extends KISSY.Event.Object
* @param originalEvent native dom event
*/
function DomEventObject(originalEvent) {
var self = this,
type = originalEvent.type;
/**
* altKey
* @property altKey
*/
/**
* attrChange
* @property attrChange
*/
/**
* attrName
* @property attrName
*/
/**
* bubbles
* @property bubbles
*/
/**
* button
* @property button
*/
/**
* cancelable
* @property cancelable
*/
/**
* charCode
* @property charCode
*/
/**
* clientX
* @property clientX
*/
/**
* clientY
* @property clientY
*/
/**
* ctrlKey
* @property ctrlKey
*/
/**
* data
* @property data
*/
/**
* detail
* @property detail
*/
/**
* eventPhase
* @property eventPhase
*/
/**
* fromElement
* @property fromElement
*/
/**
* handler
* @property handler
*/
/**
* keyCode
* @property keyCode
*/
/**
* metaKey
* @property metaKey
*/
/**
* newValue
* @property newValue
*/
/**
* offsetX
* @property offsetX
*/
/**
* offsetY
* @property offsetY
*/
/**
* pageX
* @property pageX
*/
/**
* pageY
* @property pageY
*/
/**
* prevValue
* @property prevValue
*/
/**
* relatedNode
* @property relatedNode
*/
/**
* relatedTarget
* @property relatedTarget
*/
/**
* screenX
* @property screenX
*/
/**
* screenY
* @property screenY
*/
/**
* shiftKey
* @property shiftKey
*/
/**
* srcElement
* @property srcElement
*/
/**
* toElement
* @property toElement
*/
/**
* view
* @property view
*/
/**
* wheelDelta
* @property wheelDelta
*/
/**
* which
* @property which
*/
/**
* changedTouches
* @property changedTouches
*/
/**
* touches
* @property touches
*/
/**
* targetTouches
* @property targetTouches
*/
/**
* rotation
* @property rotation
*/
/**
* scale
* @property scale
*/
/**
* source html node of current event
* @property target
* @type {HTMLElement}
*/
/**
* current htm node which processes current event
* @property currentTarget
* @type {HTMLElement}
*/
DomEventObject.superclass.constructor.call(self);
self.originalEvent = originalEvent;
// in case dom event has been mark as default prevented by lower dom node
self.isDefaultPrevented = (
originalEvent['defaultPrevented'] || originalEvent.returnValue === FALSE ||
originalEvent['getPreventDefault'] && originalEvent['getPreventDefault']()
) ? retTrue : retFalse;
var fixFns = [],
fixFn,
l,
prop,
props = commonProps.concat();
S.each(eventNormalizers, function (normalizer) {
if (type.match(normalizer.reg)) {
props = props.concat(normalizer.props);
if (normalizer.fix)
fixFns.push(normalizer.fix);
}
return undefined;
});
l = props.length;
// clone properties of the original event object
while (l) {
prop = props[--l];
self[prop] = originalEvent[prop];
}
// fix target property, if necessary
if (!self.target) {
self.target = originalEvent.srcElement || DOCUMENT; // srcElement might not be defined either
}
// check if target is a text node (safari)
if (self.target.nodeType === 3) {
self.target = self.target.parentNode;
}
l = fixFns.length;
while (l) {
fixFn = fixFns[--l];
fixFn(self, originalEvent);
}
}
S.extend(DomEventObject, BaseEvent.Object, {
constructor: DomEventObject,
preventDefault: function () {
var self = this,
e = self.originalEvent;
// if preventDefault exists run it on the original event
if (e.preventDefault) {
e.preventDefault();
}
// otherwise set the returnValue property of the original event to FALSE (IE)
else {
e.returnValue = FALSE;
}
DomEventObject.superclass.preventDefault.call(self);
},
stopPropagation: function () {
var self = this,
e = self.originalEvent;
// if stopPropagation exists run it on the original event
if (e.stopPropagation) {
e.stopPropagation();
}
// otherwise set the cancelBubble property of the original event to TRUE (IE)
else {
e.cancelBubble = TRUE;
}
DomEventObject.superclass.stopPropagation.call(self);
}
});
return DomEventObject;
}, {
requires: ['event/base']
});
/*
2012-10-30
- consider touch properties
2012-10-24
- merge with mousewheel: not perfect in osx : accelerated scroll
2010.04
- http://www.w3.org/TR/2003/WD-Dom-Level-3-Events-20030331/ecma-script-binding.html
- refer:
https://github.com/brandonaaron/jquery-mousewheel/blob/master/jquery.mousewheel.js
http://www.planabc.net/2010/08/12/mousewheel_event_in_javascript/
http://www.switchonthecode.com/tutorials/javascript-tutorial-the-scroll-wheel
http://stackoverflow.com/questions/5527601/normalizing-mousewheel-speed-across-browsers/5542105#5542105
http://www.javascriptkit.com/javatutors/onmousewheel.shtml
http://www.adomas.org/javascript-mouse-wheel/
http://plugins.jquery.com/project/mousewheel
http://www.cnblogs.com/aiyuchen/archive/2011/04/19/2020843.html
http://www.w3.org/TR/Dom-Level-3-Events/#events-mousewheelevents
*/
/**
* @ignore
* custom event for dom.
* @author yiminghe@gmail.com
*/
KISSY.add('event/dom/base/observable', function (S, Dom, Special, DomEventUtils, DomEventObserver, DomEventObject, BaseEvent) {
// 记录手工 fire(domElement,type) 时的 type
// 再在浏览器通知的系统 eventHandler 中检查
// 如果相同，那么证明已经 fire 过了，不要再次触发了
var BaseUtils = BaseEvent.Utils;
/**
* custom event for dom
* @param {Object} cfg
* @private
* @class KISSY.Event.DomEventObservable
* @extends KISSY.Event.Observable
*/
function DomEventObservable(cfg) {
var self = this;
S.mix(self, cfg);
self.reset();
/**
* html node which binds current custom event
* @cfg {HTMLElement} currentTarget
*/
}
S.extend(DomEventObservable, BaseEvent.Observable, {
setup: function () {
var self = this,
type = self.type,
s = Special[type] || {},
currentTarget = self.currentTarget,
eventDesc = DomEventUtils.data(currentTarget),
handle = eventDesc.handle;
// 第一次注册该事件，dom 节点才需要注册 dom 事件
if (!s.setup || s.setup.call(currentTarget, type) === false) {
DomEventUtils.simpleAdd(currentTarget, type, handle)
}
},
constructor: DomEventObservable,
reset: function () {
var self = this;
DomEventObservable.superclass.reset.call(self);
self.delegateCount = 0;
self.lastCount = 0;
},
/**
* notify current event 's observers
* @param {KISSY.Event.DomEventObject} event
* @return {*} return false if one of custom event 's observers else
* return last value of custom event 's observers 's return value.
*/
notify: function (event) {
/*
As some listeners may remove themselves from the
event, the original array length is dynamic. So,
let's make a copy of all listeners, so we are
sure we'll call all of them.
*/
/*
Dom3 Events: EventListenerList objects in the Dom are live. ??
*/
var target = event.target,
eventType = event['type'],
self = this,
currentTarget = self.currentTarget,
observers = self.observers,
currentTarget0,
allObservers = [],
ret,
gRet,
observerObj,
i,
j,
delegateCount = self.delegateCount || 0,
len,
currentTargetObservers,
currentTargetObserver,
observer;
// collect delegated observers and corresponding element
// https://github.com/kissyteam/kissy/issues/437
if (delegateCount && target.nodeType &&
(!event['button'] || eventType !== "click")) {
while (target != currentTarget) {
if (target.disabled !== true || eventType !== "click") {
var cachedMatch = {},
matched, key, filter;
currentTargetObservers = [];
for (i = 0; i < delegateCount; i++) {
observer = observers[i];
filter = observer.filter;
key = filter + '';
matched = cachedMatch[key];
if (matched === undefined) {
matched = cachedMatch[key] = Dom.test(target, filter);
}
if (matched) {
currentTargetObservers.push(observer);
}
}
if (currentTargetObservers.length) {
allObservers.push({
currentTarget: target,
'currentTargetObservers': currentTargetObservers
});
}
}
target = target.parentNode || currentTarget;
}
}
// root node's observers is placed at end position of add observers
// in case child node stopPropagation of root node's observers
if (delegateCount < observers.length) {
allObservers.push({
currentTarget: currentTarget,
// http://www.w3.org/TR/dom/#dispatching-events
// Let listeners be a static list of the event listeners
// associated with the object for which these steps are run.
currentTargetObservers: observers.slice(delegateCount)
});
}
//noinspection JSUnresolvedFunction
for (i = 0, len = allObservers.length; !event.isPropagationStopped() && i < len; ++i) {
observerObj = allObservers[i];
currentTargetObservers = observerObj.currentTargetObservers;
currentTarget0 = observerObj.currentTarget;
event.currentTarget = currentTarget0;
//noinspection JSUnresolvedFunction
for (j = 0; !event.isImmediatePropagationStopped() && j < currentTargetObservers.length; j++) {
currentTargetObserver = currentTargetObservers[j];
ret = currentTargetObserver.notify(event, self);
// 和 jQuery 逻辑保持一致
// 有一个 false，最终结果就是 false
// 否则等于最后一个返回值
if (gRet !== false) {
gRet = ret;
}
}
}
// fire 时判断如果 preventDefault，则返回 false 否则返回 true
// 这里返回值意义不同
return gRet;
},
/**
* fire dom event from bottom to up , emulate dispatchEvent in Dom3 Events
* @param {Object|KISSY.Event.DomEventObject} [event] additional event data
* @param {Boolean} [onlyHandlers] for internal usage
*/
fire: function (event, onlyHandlers/*internal usage*/) {
event = event || {};
var self = this,
eventType = String(self.type),
domEventObservable,
eventData,
specialEvent = Special[eventType] || {},
bubbles = specialEvent.bubbles !== false,
currentTarget = self.currentTarget;
// special fire for click/focus/blur
if (specialEvent.fire && specialEvent.fire.call(currentTarget, onlyHandlers) === false) {
return;
}
if (!(event instanceof DomEventObject)) {
eventData = event;
event = new DomEventObject({
currentTarget: currentTarget,
type: eventType,
target: currentTarget
});
S.mix(event, eventData);
}
if (specialEvent.preFire && specialEvent.preFire.call(currentTarget, event, onlyHandlers) === false) {
return;
}
// onlyHandlers is equal to event.halt()
// but we can not call event.halt()
// because handle will check event.isPropagationStopped
var cur = currentTarget,
win = Dom.getWindow(cur),
curDocument = win.document,
eventPath = [],
ontype = 'on' + eventType,
eventPathIndex = 0;
// http://www.w3.org/TR/dom/#dispatching-events
// let event path be a static ordered list of all its ancestors in tree order,
// or let event path be the empty list otherwise.
do {
eventPath.push(cur);
// Bubble up to document, then to window
cur = cur.parentNode || cur.ownerDocument || (cur === curDocument) && win;
} while (!onlyHandlers && cur && bubbles);
cur = eventPath[eventPathIndex];
// bubble up dom tree
do {
event['currentTarget'] = cur;
domEventObservable = DomEventObservable.getDomEventObservable(cur, eventType);
// default bubble for html node
if (domEventObservable) {
domEventObservable.notify(event);
}
// Trigger an inline bound script
if (cur[ ontype ] && cur[ ontype ].call(cur) === false) {
event.preventDefault();
}
cur = eventPath[++eventPathIndex];
} while (!onlyHandlers && cur && !event.isPropagationStopped());
if (!onlyHandlers && !event.isDefaultPrevented()) {
// now all browser support click
// https://developer.mozilla.org/en-US/docs/Dom/element.click
try {
// execute default action on dom node
// exclude window
if (currentTarget[ eventType ] && !S.isWindow(currentTarget)) {
// 记录当前 trigger 触发
DomEventObservable.triggeredEvent = eventType;
// 只触发默认事件，而不要执行绑定的用户回调
// 同步触发
currentTarget[ eventType ]();
}
} catch (eError) {
S.log('trigger action error: ');
S.log(eError);
}
DomEventObservable.triggeredEvent = '';
}
},
/**
* add a observer to custom event's observers
* @param {Object} cfg {@link KISSY.Event.DomEventObserver} 's config
*/
on: function (cfg) {
var self = this,
observers = self.observers,
s = Special[self.type] || {},
// clone event
observer = cfg instanceof DomEventObserver ? cfg : new DomEventObserver(cfg);
if (S.Config.debug) {
if (!observer.fn) {
S.error('lack event handler for ' + self.type);
}
}
if (self.findObserver(/**@type KISSY.Event.DomEventObserver*/observer) == -1) {
// 增加 listener
if (observer.filter) {
observers.splice(self.delegateCount, 0, observer);
self.delegateCount++;
} else {
if (observer.last) {
observers.push(observer);
self.lastCount++;
} else {
observers.splice(observers.length - self.lastCount, 0, observer);
}
}
if (s.add) {
s.add.call(self.currentTarget, observer);
}
}
},
/**
* remove some observers from current event 's observers by observer config param
* @param {Object} cfg {@link KISSY.Event.DomEventObserver} 's config
*/
detach: function (cfg) {
var groupsRe,
self = this,
s = Special[self.type] || {},
hasFilter = 'filter' in cfg,
filter = cfg.filter,
context = cfg.context,
fn = cfg.fn,
currentTarget = self.currentTarget,
observers = self.observers,
groups = cfg.groups;
if (!observers.length) {
return;
}
if (groups) {
groupsRe = BaseUtils.getGroupsRe(groups);
}
var i, j, t, observer, observerContext, len = observers.length;
// 移除 fn
if (fn || hasFilter || groupsRe) {
context = context || currentTarget;
for (i = 0, j = 0, t = []; i < len; ++i) {
observer = observers[i];
observerContext = observer.context || currentTarget;
if (
(context != observerContext) ||
// 指定了函数，函数不相等，保留
(fn && fn != observer.fn) ||
// 1.没指定函数
// 1.1 没有指定选择器,删掉 else2
// 1.2 指定选择器,字符串为空
// 1.2.1 指定选择器,字符串为空,待比较 observer 有选择器,删掉 else
// 1.2.2 指定选择器,字符串为空,待比较 observer 没有选择器,保留
// 1.3 指定选择器,字符串不为空,字符串相等,删掉 else
// 1.4 指定选择器,字符串不为空,字符串不相等,保留
// 2.指定了函数且函数相等
// 2.1 没有指定选择器,删掉 else
// 2.2 指定选择器,字符串为空
// 2.2.1 指定选择器,字符串为空,待比较 observer 有选择器,删掉 else
// 2.2.2 指定选择器,字符串为空,待比较 observer 没有选择器,保留
// 2.3 指定选择器,字符串不为空,字符串相等,删掉 else
// 2.4 指定选择器,字符串不为空,字符串不相等,保留
(
hasFilter &&
(
(filter && filter != observer.filter) ||
(!filter && !observer.filter)
)
) ||
// 指定了删除的某些组，而该 observer 不属于这些组，保留，否则删除
(groupsRe && !observer.groups.match(groupsRe))
) {
t[j++] = observer;