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| 1 | |
| 2 | |
| 3 MoreRouting.ContextAware = { | |
| 4 | |
| 5 /** @override */ | |
| 6 ready: function() { | |
| 7 this._makeRoutingReady(); | |
| 8 }, | |
| 9 | |
| 10 /** | |
| 11 * Calls `routingReady`, and ensures that it is called in a top-down manner. | |
| 12 * | |
| 13 * We need to be sure that parent nodes have `routingReady` triggered before | |
| 14 * their children so that they can properly configure nested routes. | |
| 15 * | |
| 16 * Unfortunately, `ready` is sometimes bottom-up, sometimes top-down. | |
| 17 * Ideally, this wouldn't be necessary. | |
| 18 * | |
| 19 * @see https://github.com/Polymer/polymer/pull/1448 | |
| 20 */ | |
| 21 _makeRoutingReady: function() { | |
| 22 if (this.routingIsReady) return; | |
| 23 | |
| 24 var node = this; | |
| 25 while (node = Polymer.dom(node).parentNode) { | |
| 26 if (typeof node._makeRoutingReady === 'function') break; | |
| 27 } | |
| 28 if (node) node._makeRoutingReady(); | |
| 29 | |
| 30 this.parentRoute = this._findParentRoute(); | |
| 31 this.routingIsReady = true; | |
| 32 if (typeof this.routingReady === 'function') this.routingReady(); | |
| 33 }, | |
| 34 | |
| 35 _findParentRoute: function() { | |
| 36 var node = this; | |
| 37 while (node) { | |
| 38 node = Polymer.dom(node).parentNode; | |
| 39 if (node && node.nodeType !== Node.ELEMENT_NODE) { | |
| 40 node = node.host; | |
| 41 } | |
| 42 | |
| 43 var route = node && node.moreRouteContext; | |
| 44 if (route instanceof MoreRouting.Route) { | |
| 45 return route; | |
| 46 } | |
| 47 } | |
| 48 return null; | |
| 49 }, | |
| 50 | |
| 51 }; | |
| 52 | |
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