mithril-vndb/router/router.js
2016-04-20 20:02:37 -04:00

87 lines
No EOL
2.8 KiB
JavaScript

"use strict"
var buildQueryString = require("../querystring/build")
var parseQueryString = require("../querystring/parse")
module.exports = function($window, prefix) {
var supportsPushState = typeof $window.history.pushState === "function" && $window.location.protocol !== "file:"
function parsePath(path) {
var params = {}
var queryIndex = path.indexOf("?")
var hashIndex = path.indexOf("#")
var pathEnd = queryIndex > -1 ? queryIndex : hashIndex > -1 ? hashIndex : path.length
if (queryIndex > -1) {
var queryEnd = hashIndex > -1 ? hashIndex : path.length
var queryParams = parseQueryString(path.slice(queryIndex + 1, queryEnd))
for (var key in queryParams) params[key] = queryParams[key]
}
if (hashIndex > -1) {
var hashParams = parseQueryString(path.slice(hashIndex + 1))
for (var key in hashParams) params[key] = hashParams[key]
}
return {name: path.slice(0, pathEnd), params: params}
}
function getPath() {
var type = prefix.charAt(0)
switch (type) {
case "#": return $window.location.hash.slice(prefix.length)
case "?": return $window.location.search.slice(prefix.length) + $window.location.hash
default: return $window.location.pathname + $window.location.search + $window.location.hash
}
}
function setPath(path, data, options) {
if (supportsPushState) {
var queryData = {}
if (data != null) {
for (var key in data) queryData[key] = data[key]
path = path.replace(/:([^\/]+)/g, function(match, token) {
delete queryData[token]
return data[token]
})
}
var query = buildQueryString(queryData)
if (query) path = path + "?" + query
if (options && options.replace) $window.history.replaceState(null, null, prefix + path)
else $window.history.pushState(null, null, prefix + path)
$window.onpopstate()
}
else $window.location.href = prefix + path
}
function defineRoutes(routes, resolve, reject) {
if (supportsPushState) $window.onpopstate = resolveRoute
else if (prefix.charAt(0) === "#") $window.onhashchange = resolveRoute
resolveRoute()
function resolveRoute(e) {
var path = getPath()
var data = parsePath(path)
for (var route in routes) {
var matcher = new RegExp("^" + route.replace(/:[^\/]+?\.{3}/g, "(.*?)").replace(/:[^\/]+/g, "([^\\/]+)") + "\/?$")
if (matcher.test(data.name)) {
data.name.replace(matcher, function() {
var keys = route.match(/:[^\/]+/g) || []
var values = [].slice.call(arguments, 1, -2)
for (var i = 0; i < keys.length; i++) {
data.params[keys[i].replace(/:|\./g, "")] = decodeURIComponent(values[i])
}
resolve(routes[route], data.params, path, route)
})
return
}
}
reject(path, data.params)
}
return resolveRoute
}
return {getPath: getPath, setPath: setPath, defineRoutes: defineRoutes}
}