mirror of
https://github.com/sbrl/powahroot.git
synced 2024-11-22 06:23:02 +00:00
105 lines
2.8 KiB
JavaScript
105 lines
2.8 KiB
JavaScript
"use strict";
|
|
|
|
import EventEmitter from 'event-emitter-es6';
|
|
|
|
class ClientRouter extends EventEmitter {
|
|
constructor(options) {
|
|
super();
|
|
|
|
/***** Settings *****/
|
|
this.listen_pushstate = true;
|
|
this.verbose = false;
|
|
|
|
/********************/
|
|
|
|
for(let key in options) {
|
|
this[key] = options[key];
|
|
}
|
|
|
|
/********************/
|
|
|
|
/** Whether we should handle popstate events or not. @type {Boolean} */
|
|
this.handle_popstates = true;
|
|
this.routes = [];
|
|
|
|
window.addEventListener("popstate", ((event) => {
|
|
if(!this.handle_popstates) return;
|
|
|
|
console.info(`[ClientRouter] Handling popstate - path: ${window.location.hash.substr(1)} (state`, event.state, `)`);
|
|
this.navigate(window.location.hash.substr(1));
|
|
}).bind(this));
|
|
}
|
|
|
|
add_404(callback) {
|
|
this.callback_404 = callback;
|
|
}
|
|
|
|
add_page(routespec, callback) {
|
|
this.routes.push({
|
|
spec: routespec,
|
|
match: this.pathspec_to_regex(routespec),
|
|
callback
|
|
});
|
|
}
|
|
|
|
navigate(path) {
|
|
for(let route_info of this.routes) {
|
|
const matches = path.match(route_info.match.regex);
|
|
if(matches) {
|
|
if(this.verbose) console.log(`%c[Router] Matched against ${route_info.match.regex}!`, "color: hsl(331, 76%, 40%); font-weight: bold;");
|
|
|
|
// Build the parameters object
|
|
let params = {};
|
|
for(let i = 1; i < matches.length; i++) { // Skip the top-level group match
|
|
params[route_info.match.tokens[i-1]] = matches[i];
|
|
}
|
|
|
|
// Don't handle any popstates potentially generated by changing the hash
|
|
this.handle_popstates = false;
|
|
window.location.hash = `#${path}`;
|
|
this.handle_popstates = true;
|
|
|
|
route_info.callback(params);
|
|
return;
|
|
}
|
|
|
|
if(this.verbose) console.debug(`%c[Router] No match against ${route_info.match.regex} - moving on.`, "color: hsl(331, 76%, 40%)");
|
|
}
|
|
|
|
if(this.verbose) console.warn(`Couldn't find a match for '${path}'.`);
|
|
if(typeof this.callback_404 == "function")
|
|
this.callback_404(path);
|
|
}
|
|
|
|
navigate_current_hash() {
|
|
this.navigate(window.location.hash.substr(1));
|
|
}
|
|
|
|
/**
|
|
* Converts a path specification into a regular expression.
|
|
* From the server-side sibling of this (client-side) router.
|
|
* @param {string} pathspec The path specification to convert.
|
|
* @return {RegExp} The resulting regular expression
|
|
*/
|
|
pathspec_to_regex(pathspec) {
|
|
if(pathspec == "*") // Support wildcards
|
|
return { regex: /^/, tokens: [] };
|
|
|
|
let tokens = [];
|
|
let regex = new RegExp("^" + pathspec.replace(/::?([a-zA-Z0-9\-_]+)/g, (substr/*, index, template (not used)*/) => {
|
|
tokens.push(substr.replace(/:/g, ""));
|
|
|
|
// FUTURE: We could add optional param support here too
|
|
if(substr.startsWith("::"))
|
|
return `(.+)`;
|
|
else
|
|
return `([^\/]+)`;
|
|
}) + "$", "i");
|
|
|
|
if(this.verbose) console.info("[router/verbose] Created regex", regex);
|
|
|
|
return { regex, tokens };
|
|
}
|
|
}
|
|
|
|
export default ClientRouter;
|