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<a href="../index.html">all files</a> / <a href="index.html">vdom/</a> VElement.js
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<span class="strong">98.88% </span>
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<span class="strong">21 statements, 5 functions, 11 branches</span>
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<span class="cline-any cline-neutral"> </span></td><td class="text"><pre class="prettyprint lang-js">import { avalon, document, msie } from '../seed/core'
export function VElement(type, props, children, isVoidTag) {
this.nodeName = type
this.props = props
this.children = children
this.isVoidTag = isVoidTag
}
VElement.prototype = {
constructor: VElement,
toDOM() {
if (this.dom)
return this.dom
var dom, tagName = this.nodeName
if (avalon.modern && svgTags[tagName]) {
dom = createSVG(tagName)
/* istanbul ignore next*/
} else <span class="skip-if-branch" title="if path not taken" >I</span>if (!avalon.modern && (<span class="branch-1 cbranch-skip" title="branch not covered" >VMLTags[tagName] </span>|| <span class="branch-2 cbranch-skip" title="branch not covered" >rvml.test(tagName))</span>) {
<span class="cstat-skip" title="statement not covered" > dom = createVML(tagName)</span>
} else {
dom = document.createElement(tagName)
}
var props = this.props || <span class="branch-1 cbranch-no" title="branch not covered" >{}</span>
for (var i in props) {
var val = props[i]
<span class="missing-if-branch" title="else path not taken" >E</span>if (skipFalseAndFunction(val)) {
/* istanbul ignore if*/
<span class="skip-if-branch" title="if path not taken" >I</span>if (specalAttrs[i] && avalon.msie < 8) {
<span class="cstat-skip" title="statement not covered" > specalAttrs[i](dom, val)</span>
} else {
dom.setAttribute(i, val + '')
}
}
}
var c = this.children || <span class="branch-1 cbranch-no" title="branch not covered" >[]</span>
var template = c[0] ? c[0].nodeValue : ''
switch (this.nodeName) {
case 'script':
dom.type = 'noexec'
dom.text = template
try{
dom.innerHTML = template
}catch(e){}
dom.type = props.type || ''
break
case 'noscript':
dom.textContent = template
case 'style':
case 'xmp':
case 'template':
try {
dom.innerHTML = template
} catch (e) {
/* istanbul ignore next*/
<span class="cstat-skip" title="statement not covered" > this.hackIE(dom, this.nodeName, template)</span>
}
break
case 'option':
//IE6-8,为option添加文本子节点,不会同步到text属性中
/* istanbul ignore next */
<span class="skip-if-branch" title="if path not taken" >I</span>if (msie < 9)
<span class="cstat-skip" title="statement not covered" > dom.text = template</span>
default:
/* istanbul ignore next */
if (!this.isVoidTag && this.children) {
this.children.forEach(el =>
c && dom.appendChild(avalon.vdom(c, 'toDOM'))
)
}
break
}
return this.dom = dom
},
/* istanbul ignore next */
hackIE(dom, nodeName, template) {
switch (nodeName) {
case 'style':
dom.setAttribute('type', 'text/css')
dom.styleSheet.cssText = template
<span class="cstat-no" title="statement not covered" > break</span>
case 'xmp': //IE6-8,XMP元素里面只能有文本节点,不能使用innerHTML
case 'noscript':
dom.textContent = template
break
}
},
toHTML() {
var arr = []
var props = this.props || <span class="branch-1 cbranch-no" title="branch not covered" >{}</span>
for (var i in props) {
var val = props[i]
<span class="missing-if-branch" title="else path not taken" >E</span>if (skipFalseAndFunction(val)) {
arr.push(i + '=' + avalon.quote(props[i] + ''))
}
}
arr = arr.length ? ' ' + arr.join(' ') : ''
var str = '<' + this.nodeName + arr
if (this.isVoidTag) {
return str + '/>'
}
str += '>'
<span class="missing-if-branch" title="else path not taken" >E</span>if (this.children) {
str += this.children.map(
el => (el ? avalon.vdom(el, 'toHTML') : <span class="branch-1 cbranch-no" title="branch not covered" >'')</span>
).join('')
}
return str + '</' + this.nodeName + '>'
}
}
function skipFalseAndFunction(a) {
return a !== false && (Object(a) !== a)
}
/* istanbul ignore next */
var specalAttrs = {
"class": <span class="fstat-skip" title="function not covered" >function(dom, val) {</span>
<span class="cstat-skip" title="statement not covered" > dom.className = val</span>
},
style: <span class="fstat-skip" title="function not covered" >function(dom, val) {</span>
<span class="cstat-skip" title="statement not covered" > dom.style.cssText = val</span>
},
type: <span class="fstat-skip" title="function not covered" >function(dom, val) {</span>
<span class="cstat-skip" title="statement not covered" > try { //textarea,button 元素在IE6,7设置 type 属性会抛错</span>
<span class="cstat-skip" title="statement not covered" > dom.type = val</span>
} catch (e) {}
},
'for': <span class="fstat-skip" title="function not covered" >function(dom, val) {</span>
<span class="cstat-skip" title="statement not covered" > dom.setAttribute('for', val)</span>
<span class="cstat-skip" title="statement not covered" > dom.htmlFor = val</span>
}
}
function createSVG(type) {
return document.createElementNS('http://www.w3.org/2000/svg', type)
}
var svgTags = avalon.oneObject('circle,defs,ellipse,image,line,' +
'path,polygon,polyline,rect,symbol,text,use,g,svg')
var rvml = /^\w+\:\w+/
/* istanbul ignore next*/
<span class="fstat-skip" title="function not covered" >function createVML(type) {</span>
<span class="cstat-skip" title="statement not covered" > if (document.styleSheets.length < 31) {</span>
<span class="cstat-skip" title="statement not covered" > document.createStyleSheet().addRule(".rvml", "behavior:url(#default#VML)");</span>
} else {
// no more room, add to the existing one
// http://msdn.microsoft.com/en-us/library/ms531194%28VS.85%29.aspx
<span class="cstat-skip" title="statement not covered" > document.styleSheets[0].addRule(".rvml", "behavior:url(#default#VML)");</span>
}
<span class="cstat-skip" title="statement not covered" > var arr = type.split(':')</span>
<span class="cstat-skip" title="statement not covered" > if (arr.length === 1) {</span>
<span class="cstat-skip" title="statement not covered" > arr.unshift('v')</span>
}
<span class="cstat-skip" title="statement not covered" > var tag = arr[1]</span>
<span class="cstat-skip" title="statement not covered" > var ns = arr[0]</span>
<span class="cstat-skip" title="statement not covered" > if (!document.namespaces[ns]) {</span>
<span class="cstat-skip" title="statement not covered" > document.namespaces.add(ns, "urn:schemas-microsoft-com:vml")</span>
}
<span class="cstat-skip" title="statement not covered" > return document.createElement('<' + ns + ':' + tag + ' class="rvml">');</span>
}
var VMLTags = avalon.oneObject('shape,line,polyline,rect,roundrect,oval,arc,' +
'curve,background,image,shapetype,group,fill,' +
'stroke,shadow, extrusion, textbox, imagedata, textpath')</pre></td></tr>
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