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<a href="../../../index.html">all files</a> / <a href="index.html">src/hyperscript/hasCssSelector/</a> hasCssSelector.ts
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<span class="strong">26.98% </span>
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<span class="cline-any cline-neutral"> </span></td><td class="text"><pre class="prettyprint lang-js">import { VNode } from '../../'
import { matchesSelector } from './matchesSelector'
// tslint:disable-next-line:cyclomatic-complexity
export function hasCssSelector(cssSelector: string, vNode: VNode): boolean {
cssSelector = cssSelector.trim()
<span class="missing-if-branch" title="if path not taken" >I</span>if (cssSelector === '*')
<span class="cstat-no" title="statement not covered" > return true</span>
if (cssSelector.indexOf(',') > -1) {
const cssSelectors = cssSelector.split(',').map((str) => str.trim())
for (let i = 0; i < cssSelectors.length; ++i)
if (hasCssSelector(cssSelectors[i], vNode))
return true
return false
} else <span class="missing-if-branch" title="if path not taken" >I</span>if (cssSelector.indexOf('>') > -1) {
const <span class="cstat-no" title="statement not covered" >[ parentSelector, childSelector ] = splitByLastIndex(cssSelector, '>')</span>
<span class="cstat-no" title="statement not covered" > if (!vNode.parent)</span>
<span class="cstat-no" title="statement not covered" > return false</span>
<span class="cstat-no" title="statement not covered" > return hasCssSelector(parentSelector, vNode.parent) &&</span>
hasCssSelector(childSelector, vNode)
} else <span class="missing-if-branch" title="if path not taken" >I</span>if (cssSelector.indexOf(' + ') > -1) {
const <span class="cstat-no" title="statement not covered" >[ siblingSelector, selector ] = splitByLastIndex(cssSelector, '+')</span>
<span class="cstat-no" title="statement not covered" > const parent = vNode.parent</span>
<span class="cstat-no" title="statement not covered" > if (!parent || !hasCssSelector(selector, vNode))</span>
<span class="cstat-no" title="statement not covered" > return false</span>
<span class="cstat-no" title="statement not covered" > const children = parent.children</span>
<span class="cstat-no" title="statement not covered" > if (!children) <span class="cstat-no" title="statement not covered" >return false</span></span>
<span class="cstat-no" title="statement not covered" > const index = children.indexOf(vNode)</span>
<span class="cstat-no" title="statement not covered" > if (index === 0 || !hasCssSelector(siblingSelector, children[index - 1]))</span>
<span class="cstat-no" title="statement not covered" > return false</span>
<span class="cstat-no" title="statement not covered" > return true</span>
} else <span class="missing-if-branch" title="if path not taken" >I</span>if (cssSelector.indexOf(' ~ ') > -1) {
const <span class="cstat-no" title="statement not covered" >[ siblingSelector, selector ] = splitByLastIndex(cssSelector, '~')</span>
<span class="cstat-no" title="statement not covered" > const parent = vNode.parent</span>
<span class="cstat-no" title="statement not covered" > if (!parent || !hasCssSelector(selector, vNode))</span>
<span class="cstat-no" title="statement not covered" > return false</span>
<span class="cstat-no" title="statement not covered" > const children = parent.children</span>
<span class="cstat-no" title="statement not covered" > if (!children) <span class="cstat-no" title="statement not covered" >return false</span></span>
<span class="cstat-no" title="statement not covered" > const index = children.indexOf(vNode)</span>
<span class="cstat-no" title="statement not covered" > if (index === 0)</span>
<span class="cstat-no" title="statement not covered" > return false</span>
<span class="cstat-no" title="statement not covered" > for (let i = 0; i < index; ++i)</span>
<span class="cstat-no" title="statement not covered" > if (hasCssSelector(siblingSelector, children[i]))</span>
<span class="cstat-no" title="statement not covered" > return true</span>
<span class="cstat-no" title="statement not covered" > return false</span>
} else <span class="missing-if-branch" title="if path not taken" >I</span>if (cssSelector.indexOf(' ') > -1) {
<span class="cstat-no" title="statement not covered" > const cssSelectors: Array<string> =</span>
cssSelector.split(' ').filter(Boolean).map(<span class="fstat-no" title="function not covered" >(str)</span> => <span class="cstat-no" title="statement not covered" >str.trim())</span>
<span class="cstat-no" title="statement not covered" > let i = cssSelectors.length - 1</span>
<span class="cstat-no" title="statement not covered" > if (!hasCssSelector(cssSelectors[i], vNode))</span>
<span class="cstat-no" title="statement not covered" > return false</span>
<span class="cstat-no" title="statement not covered" > while (--i >= 0) {</span>
<span class="cstat-no" title="statement not covered" > const parentMatches =</span>
traverseParentVNodes(<span class="fstat-no" title="function not covered" >(parent)</span> => <span class="cstat-no" title="statement not covered" >hasCssSelector(cssSelectors[i], parent),</span> vNode)
<span class="cstat-no" title="statement not covered" > if (!parentMatches)</span>
<span class="cstat-no" title="statement not covered" > return false</span>
}
<span class="cstat-no" title="statement not covered" > return true</span>
}
return matchesSelector(cssSelector, vNode)
}
<span class="fstat-no" title="function not covered" >function splitByLastIndex(cssSelector: string, token: string)</span>: [string, string] {
<span class="cstat-no" title="statement not covered" > const index = cssSelector.lastIndexOf(token)</span>
<span class="cstat-no" title="statement not covered" > return [</span>
cssSelector.substring(0, index).trim(),
cssSelector.substring(index + 1).trim(),
]
}
<span class="fstat-no" title="function not covered" >function traverseParentVNodes(</span>
predicate: (vNode: VNode) => boolean,
vNode: VNode): boolean
{
<span class="cstat-no" title="statement not covered" > const parent = vNode.parent</span>
<span class="cstat-no" title="statement not covered" > if (!parent) <span class="cstat-no" title="statement not covered" >return false</span></span>
<span class="cstat-no" title="statement not covered" > if (predicate(parent))</span>
<span class="cstat-no" title="statement not covered" > return true</span>
<span class="cstat-no" title="statement not covered" > return traverseParentVNodes(predicate, parent)</span>
}
</pre></td></tr>
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