mirror of
http://git.whoc.org.uk/git/password-manager.git
synced 2025-01-10 23:20:02 +01:00
82 lines
3.0 KiB
JavaScript
82 lines
3.0 KiB
JavaScript
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;(function($){
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var zepto = $.zepto, oldQsa = zepto.qsa, oldMatches = zepto.matches
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function visible(elem){
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elem = $(elem)
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return !!(elem.width() || elem.height()) && elem.css("display") !== "none"
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}
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// Implements a subset from:
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// http://api.jquery.com/category/selectors/jquery-selector-extensions/
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//
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// Each filter function receives the current index, all nodes in the
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// considered set, and a value if there were parentheses. The value
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// of `this` is the node currently being considered. The function returns the
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// resulting node(s), null, or undefined.
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//
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// Complex selectors are not supported:
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// li:has(label:contains("foo")) + li:has(label:contains("bar"))
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// ul.inner:first > li
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var filters = $.expr[':'] = {
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visible: function(){ if (visible(this)) return this },
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hidden: function(){ if (!visible(this)) return this },
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selected: function(){ if (this.selected) return this },
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checked: function(){ if (this.checked) return this },
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parent: function(){ return this.parentNode },
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first: function(idx){ if (idx === 0) return this },
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last: function(idx, nodes){ if (idx === nodes.length - 1) return this },
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eq: function(idx, _, value){ if (idx === value) return this },
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contains: function(idx, _, text){ if ($(this).text().indexOf(text) > -1) return this },
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has: function(idx, _, sel){ if (zepto.qsa(this, sel).length) return this }
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}
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var filterRe = new RegExp('(.*):(\\w+)(?:\\(([^)]+)\\))?$\\s*'),
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childRe = /^\s*>/,
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classTag = 'Zepto' + (+new Date())
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function process(sel, fn) {
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// quote the hash in `a[href^=#]` expression
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sel = sel.replace(/=#\]/g, '="#"]')
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var filter, arg, match = filterRe.exec(sel)
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if (match && match[2] in filters) {
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var filter = filters[match[2]], arg = match[3]
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sel = match[1]
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if (arg) {
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var num = Number(arg)
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if (isNaN(num)) arg = arg.replace(/^["']|["']$/g, '')
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else arg = num
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}
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}
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return fn(sel, filter, arg)
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}
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zepto.qsa = function(node, selector) {
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return process(selector, function(sel, filter, arg){
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try {
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var taggedParent
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if (!sel && filter) sel = '*'
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else if (childRe.test(sel))
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// support "> *" child queries by tagging the parent node with a
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// unique class and prepending that classname onto the selector
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taggedParent = $(node).addClass(classTag), sel = '.'+classTag+' '+sel
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var nodes = oldQsa(node, sel)
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} catch(e) {
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console.error('error performing selector: %o', selector)
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throw e
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} finally {
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if (taggedParent) taggedParent.removeClass(classTag)
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}
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return !filter ? nodes :
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zepto.uniq($.map(nodes, function(n, i){ return filter.call(n, i, nodes, arg) }))
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})
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}
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zepto.matches = function(node, selector){
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return process(selector, function(sel, filter, arg){
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return (!sel || oldMatches(node, sel)) &&
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(!filter || filter.call(node, null, arg) === node)
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})
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}
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})(Zepto)
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