angular2
Version:
Angular 2 - a web framework for modern web apps
120 lines (119 loc) • 4.26 kB
JavaScript
import { isPresent } from 'angular2/src/facade/lang';
import { Map, ListWrapper, isListLikeIterable } from 'angular2/src/facade/collection';
function paramParser(rawParams = '') {
var map = new Map();
if (rawParams.length > 0) {
var params = rawParams.split('&');
params.forEach((param) => {
var split = param.split('=');
var key = split[0];
var val = split[1];
var list = isPresent(map.get(key)) ? map.get(key) : [];
list.push(val);
map.set(key, list);
});
}
return map;
}
/**
* Map-like representation of url search parameters, based on
* [URLSearchParams](https://url.spec.whatwg.org/#urlsearchparams) in the url living standard,
* with several extensions for merging URLSearchParams objects:
* - setAll()
* - appendAll()
* - replaceAll()
*/
export class URLSearchParams {
constructor(rawParams = '') {
this.rawParams = rawParams;
this.paramsMap = paramParser(rawParams);
}
clone() {
var clone = new URLSearchParams();
clone.appendAll(this);
return clone;
}
has(param) { return this.paramsMap.has(param); }
get(param) {
var storedParam = this.paramsMap.get(param);
if (isListLikeIterable(storedParam)) {
return ListWrapper.first(storedParam);
}
else {
return null;
}
}
getAll(param) {
var mapParam = this.paramsMap.get(param);
return isPresent(mapParam) ? mapParam : [];
}
set(param, val) {
var mapParam = this.paramsMap.get(param);
var list = isPresent(mapParam) ? mapParam : [];
ListWrapper.clear(list);
list.push(val);
this.paramsMap.set(param, list);
}
// A merge operation
// For each name-values pair in `searchParams`, perform `set(name, values[0])`
//
// E.g: "a=[1,2,3], c=[8]" + "a=[4,5,6], b=[7]" = "a=[4], c=[8], b=[7]"
//
// TODO(@caitp): document this better
setAll(searchParams) {
searchParams.paramsMap.forEach((value, param) => {
var mapParam = this.paramsMap.get(param);
var list = isPresent(mapParam) ? mapParam : [];
ListWrapper.clear(list);
list.push(value[0]);
this.paramsMap.set(param, list);
});
}
append(param, val) {
var mapParam = this.paramsMap.get(param);
var list = isPresent(mapParam) ? mapParam : [];
list.push(val);
this.paramsMap.set(param, list);
}
// A merge operation
// For each name-values pair in `searchParams`, perform `append(name, value)`
// for each value in `values`.
//
// E.g: "a=[1,2], c=[8]" + "a=[3,4], b=[7]" = "a=[1,2,3,4], c=[8], b=[7]"
//
// TODO(@caitp): document this better
appendAll(searchParams) {
searchParams.paramsMap.forEach((value, param) => {
var mapParam = this.paramsMap.get(param);
var list = isPresent(mapParam) ? mapParam : [];
for (var i = 0; i < value.length; ++i) {
list.push(value[i]);
}
this.paramsMap.set(param, list);
});
}
// A merge operation
// For each name-values pair in `searchParams`, perform `delete(name)`,
// followed by `set(name, values)`
//
// E.g: "a=[1,2,3], c=[8]" + "a=[4,5,6], b=[7]" = "a=[4,5,6], c=[8], b=[7]"
//
// TODO(@caitp): document this better
replaceAll(searchParams) {
searchParams.paramsMap.forEach((value, param) => {
var mapParam = this.paramsMap.get(param);
var list = isPresent(mapParam) ? mapParam : [];
ListWrapper.clear(list);
for (var i = 0; i < value.length; ++i) {
list.push(value[i]);
}
this.paramsMap.set(param, list);
});
}
toString() {
var paramsList = [];
this.paramsMap.forEach((values, k) => { values.forEach(v => paramsList.push(k + '=' + v)); });
return paramsList.join('&');
}
delete(param) { this.paramsMap.delete(param); }
}