Roll Polymer elements

third_party/polymer/v1_0/components-chromium/carbon-route/carbon-route-extracted.js

-'use strict';
-
-  Polymer({
-    is: 'carbon-route',
-
-    properties: {
-      /**
-       * The URL component managed by this element.
-       */
-      route: {
-        type: Object,
-        notify: true
-      },
-
-      /**
-       * The pattern of slash-separated segments to match `path` against.
-       *
-       * For example the pattern "/foo" will match "/foo" or "/foo/bar"
-       * but not "/foobar".
-       *
-       * Path segments like `/:named` are mapped to properties on the `data` object.
-       */
-      pattern: {
-        type: String
-      },
-
-      /**
-       * The parameterized values that are extracted from the route as
-       * described by `pattern`.
-       */
-      data: {
-        type: Object,
-        value: function() {return {};},
-        notify: true
-      },
-
-      /**
-       * @type {?Object}
-       */
-      queryParams: {
-        type: Object,
-        value: function() {
-          return {};
-        },
-        notify: true
-      },
-
-      /**
-       * The part of `path` NOT consumed by `pattern`.
-       */
-      tail: {
-        type: Object,
-        value: function() {return {path: null, prefix: null, __queryParams: null};},
-        notify: true
-      },
-
-      active: {
-        type: Boolean,
-        notify: true,
-        readOnly: true
-      },
-
-      _skipMatch: {
-        type: Boolean,
-        value: false
-      },
-      /**
-       * @type {?string}
-       */
-      _matched: {
-        type: String,
-        value: ''
-      }
-    },
-
-    observers: [
-      '__tryToMatch(route.path, pattern)',
-      '__updatePathOnDataChange(data.*)',
-      '__tailPathChanged(tail.path)',
-      '__routeQueryParamsChanged(route.__queryParams)',
-      '__tailQueryParamsChanged(tail.__queryParams)',
-      '__queryParamsChanged(queryParams.*)'
-    ],
-
-    created: function() {
-      this.linkPaths('route.__queryParams', 'tail.__queryParams');
-      this.linkPaths('tail.__queryParams', 'route.__queryParams');
-    },
-
-    // IE Object.assign polyfill
-    __assign: function(target, source) {
-      if (source != null) {
-        for (var key in source) {
-          target[key] = source[key];
-        }
-      }
-
-      return target;
-    },
-
-    // Deal with the query params object being assigned to wholesale
-    __routeQueryParamsChanged: function(queryParams) {
-      if (queryParams && this.tail) {
-        this.set('tail.__queryParams', queryParams);
-
-        if (!this.active || this._skipMatch) {
-          return;
-        }
-
-        this._skipMatch = true;
-
-        var qp;
-
-        if (Object.assign) {
-          qp = Object.assign({}, queryParams);
-        } else {
-          qp = this.__assign({}, queryParams);
-        }
-
-        this.set('queryParams', qp);
-        this._skipMatch = false;
-      }
-    },
-
-    __tailQueryParamsChanged: function(queryParams) {
-      if (queryParams && this.route) {
-        this.set('route.__queryParams', queryParams);
-      }
-    },
-
-    __queryParamsChanged: function(changes) {
-      if (!this.active || this._skipMatch) {
-        return;
-      }
-
-      this.set('route.__' + changes.path, changes.value);
-    },
-
-    __resetProperties: function() {
-      this._setActive(false);
-      this._matched = null;
-      //this.tail = { path: null, prefix: null, queryParams: null };
-      //this.data = {};
-    },
-
-    __tryToMatch: function(path, pattern) {
-      if (this._skipMatch || !pattern) {
-        return;
-      }
-
-      if (!path) {
-        this.__resetProperties();
-        return;
-      }
-
-      var remainingPieces = path.split('/');
-      var patternPieces = pattern.split('/');
-
-      var matched = [];
-      var namedMatches = {};
-
-      for (var i=0; i < patternPieces.length; i++) {
-        var patternPiece = patternPieces[i];
-        if (!patternPiece && patternPiece !== '') {
-          break;
-        }
-        var pathPiece = remainingPieces.shift();
-
-        // We don't match this path.
-        if (!pathPiece && pathPiece !== '') {
-          this.__resetProperties();
-          return;
-        }
-        matched.push(pathPiece);
-
-        if (patternPiece.charAt(0) == ':') {
-          namedMatches[patternPiece.slice(1)] = pathPiece;
-        } else if (patternPiece !== pathPiece) {
-          this.__resetProperties();
-          return;
-        }
-      }
-
-      matched = matched.join('/');
-      var tailPath = remainingPieces.join('/');
-      if (remainingPieces.length > 0) {
-        tailPath = '/' + tailPath;
-      }
-
-      this._skipMatch = true;
-      this._matched = matched;
-      this.data = namedMatches;
-      var tailPrefix = this.route.prefix + matched;
-
-      if (!this.tail || this.tail.prefix !== tailPrefix || this.tail.path !== tailPath) {
-        this.tail = {
-          prefix: tailPrefix,
-          path: tailPath,
-          __queryParams: this.route.__queryParams
-        };
-      }
-      this._setActive(true);
-      this._skipMatch = false;
-    },
-
-    __tailPathChanged: function(path) {
-      if (!this.active || this._skipMatch) {
-        return;
-      }
-      var newPath = this._matched;
-      if (path) {
-        if (path.charAt(0) !== '/') {
-          path = '/' + path;
-        }
-        newPath += path;
-      }
-      this.set('route.path', newPath);
-    },
-
-    __updatePathOnDataChange: function() {
-      if (!this.route || this._skipMatch || !this.active) {
-        return;
-      }
-      this._skipMatch = true;
-      this.tail = {path: null, prefix: null, queryParams: null};
-      this.set('route.path', this.__getLink({}));
-      this._skipMatch = false;
-    },
-
-    __getLink: function(overrideValues) {
-      var values = {tail: this.tail};
-      for (var key in this.data) {
-        values[key] = this.data[key];
-      }
-      for (var key in overrideValues) {
-        values[key] = overrideValues[key];
-      }
-      var patternPieces = this.pattern.split('/');
-      var interp = patternPieces.map(function(value) {
-        if (value[0] == ':') {
-          value = values[value.slice(1)];
-        }
-        return value;
-      }, this);
-      if (values.tail && values.tail.path) {
-        interp.push(values.tail.path);
-      }
-      return interp.join('/');
-    }
-  });