12 scan.js

/*********************************************************************
 *                           扫描系统                                 *
 **********************************************************************/

avalon.scan = function(elem, vmodel, group) {
    elem = elem || root
    var vmodels = vmodel ? [].concat(vmodel) : []
    scanTag(elem, vmodels)
}

//http://www.w3.org/TR/html5/syntax.html#void-elements
var stopScan = oneObject("area,base,basefont,br,col,command,embed,hr,img,input,link,meta,param,source,track,wbr,noscript,script,style,textarea".toUpperCase())

function checkScan(elem, callback, innerHTML) {
    var id = setTimeout(function() {
        var currHTML = elem.innerHTML
        clearTimeout(id)
        if (currHTML === innerHTML) {
            callback()
        } else {
            checkScan(elem, callback, currHTML)
        }
    })
}


function createSignalTower(elem, vmodel) {
    var id = elem.getAttribute("avalonctrl") || vmodel.$id
    elem.setAttribute("avalonctrl", id)
    vmodel.$events.expr = elem.tagName + '[avalonctrl="' + id + '"]'
}

var getBindingCallback = function(elem, name, vmodels) {
    var callback = elem.getAttribute(name)
    if (callback) {
        for (var i = 0, vm; vm = vmodels[i++]; ) {
            if (vm.hasOwnProperty(callback) && typeof vm[callback] === "function") {
                return vm[callback]
            }
        }
    }
}

function executeBindings(bindings, vmodels) {
    for (var i = 0, data; data = bindings[i++]; ) {
        data.vmodels = vmodels
        bindingHandlers[data.type](data, vmodels)
        if (data.evaluator && data.element && data.element.nodeType === 1) { //移除数据绑定，防止被二次解析
            //chrome使用removeAttributeNode移除不存在的特性节点时会报错 https://github.com/RubyLouvre/avalon/issues/99
            data.element.removeAttribute(data.name)
        }
    }
    bindings.length = 0
}

//https://github.com/RubyLouvre/avalon/issues/636
var mergeTextNodes = IEVersion && window.MutationObserver ? function (elem) {
    var node = elem.firstChild, text
    while (node) {
        var aaa = node.nextSibling
        if (node.nodeType === 3) {
            if (text) {
                text.nodeValue += node.nodeValue
                elem.removeChild(node)
            } else {
                text = node
            }
        } else {
            text = null
        }
        node = aaa
    }
} : 0

var rmsAttr = /ms-(\w+)-?(.*)/
var priorityMap = {
    "if": 10,
    "repeat": 90,
    "data": 100,
    "widget": 110,
    "each": 1400,
    "with": 1500,
    "duplex": 2000,
    "on": 3000
}

var events = oneObject("animationend,blur,change,input,click,dblclick,focus,keydown,keypress,keyup,mousedown,mouseenter,mouseleave,mousemove,mouseout,mouseover,mouseup,scan,scroll,submit")
var obsoleteAttrs = oneObject("value,title,alt,checked,selected,disabled,readonly,enabled")
function bindingSorter(a, b) {
    return a.priority - b.priority
}