third_party/polymer/v1_0/components-chromium/more-routing/driver-extracted.js

   1
   2 (function(scope) {
   3 var MoreRouting = scope.MoreRouting = scope.MoreRouting || {};
   4 MoreRouting.Driver = Driver;
   5
   6 /**
   7  * TODO(nevir): Docs.
   8  */
   9 function Driver(opt_config) {
  10   var config = opt_config || {};
  11   if (config.prefix) this.prefix = config.prefix;
  12
  13   this._activeRoutes = [];
  14
  15   this._rootRoutes = [];
  16 }
  17
  18 Driver.prototype.manageRoute = function manageRoute(route) {
  19   route.driver = this;
  20   this._appendRoute(route);
  21
  22   if (route.parent) {
  23     if (route.parent.active) {
  24       // Remember: `processPathParts` takes just the path parts relative to that
  25       // route; not the full set.
  26       route.processPathParts(this.currentPathParts.slice(route.parent.depth));
  27     }
  28   } else {
  29     route.processPathParts(this.currentPathParts);
  30   }
  31
  32   if (route.active) this._activeRoutes.push(route);
  33 };
  34
  35 Driver.prototype.urlForParts = function urlForParts(parts) {
  36   return this.prefix + parts.join(this.separator);
  37 };
  38
  39 Driver.prototype.navigateToParts = function(parts) {
  40   return this.navigateToUrl(this.urlForParts(parts));
  41 };
  42
  43 Driver.prototype.navigateToUrl = function navigateToUrl(url) {
  44   throw new Error(this.constructor.name + '#navigateToUrl not implemented');
  45 };
  46
  47 // Subclass Interface
  48
  49 Driver.prototype.prefix = '/';
  50 Driver.prototype.separator = '/';
  51
  52 Driver.prototype.setCurrentPath = function setCurrentPath(path) {
  53   this.currentPathParts = this.splitPath(path);
  54   var newRoutes = this._matchingRoutes(this.currentPathParts);
  55
  56   // active -> inactive.
  57   for (var i = 0, route; route = this._activeRoutes[i]; i++) {
  58     if (newRoutes.indexOf(route) === -1) {
  59       route.processPathParts(null);
  60     }
  61   }
  62
  63   this._activeRoutes = newRoutes;
  64 }
  65
  66 Driver.prototype.splitPath = function splitPath(rawPath) {
  67   if (this.prefix && rawPath.indexOf(this.prefix) !== 0) {
  68     throw new Error(
  69         'Invalid path "' + rawPath + '"; ' +
  70         'expected it to be prefixed by "' + this.prefix + '"');
  71   }
  72   var path  = rawPath.substr(this.prefix.length);
  73   var parts = path.split(this.separator);
  74   // Ignore trailing separators.
  75   if (!parts[parts.length - 1]) parts.pop();
  76
  77   return parts;
  78 };
  79
  80 // Internal Implementation
  81 Driver.prototype._appendRoute = function _appendRoute(route) {
  82   if (route.parent) {
  83     // We only care about root routes.
  84     return;
  85   }
  86   this._rootRoutes.push(route);
  87 };
  88
  89 Driver.prototype._matchingRoutes = function _matchingRoutes(parts, rootRoutes) {
  90   var routes = [];
  91   var candidates = rootRoutes || this._rootRoutes;
  92   var route;
  93   for (var i = 0; i < candidates.length; i++) {
  94     route = candidates[i];
  95     route.processPathParts(parts);
  96     if (route.active) {
  97       routes.push(route);
  98       routes = routes.concat(this._matchingRoutes(parts.slice(route.compiled.length), route.children));
  99     }
 100   }
 101   return routes;
 102 }
 103
 104 })(window);