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| 1 <!-- | |
| 2 Copyright 2014 The Chromium Authors. All rights reserved. | |
| 3 Use of this source code is governed by a BSD-style license that can be | |
| 4 found in the LICENSE file. | |
| 5 --> | |
| 6 | |
| 7 <!-- | |
| 8 Makes all links in a component view navigation aware. This will trap | |
| 9 clicks to links in that component and then redirect the navigation to the | |
| 10 <ct-router> component by dispatching a "navigate" event. | |
| 11 | |
| 12 To use, just add the component to the <template> inside all components that | |
| 13 use <a href> where the link should switch to a different view. | |
| 14 | |
| 15 ex. | |
| 16 <ct-view-handler></ct-view-handler> | |
| 17 --> | |
| 18 <polymer-element name="ct-view-handler"> | |
| 19 <template> | |
| 20 <style> | |
| 21 :host { display: none; } | |
| 22 </style> | |
| 23 </template> | |
| 24 <script> | |
| 25 Polymer("ct-view-handler", { | |
| 26 created: function() { | |
| 27 this.handleClick = this.handleClick.bind(this); | |
| 28 }, | |
| 29 | |
| 30 attached: function() { | |
| 31 this.scope = this.enclosingTreeScope(); | |
| 32 this.scope.addEventListener("click", this.handleClick); | |
| 33 }, | |
| 34 | |
| 35 detached: function() { | |
| 36 this.scope.removeEventListener("click", this.handleClick); | |
| 37 }, | |
| 38 | |
| 39 handleClick: function(event) { | |
| 40 if (event.metaKey || event.ctrlKey || event.button == 1) | |
| 41 return; | |
| 42 var a = this.findEnclosingLink(event.target); | |
| 43 if (!a) | |
| 44 return; | |
| 45 if (!a.href.startsWith(window.location.origin)) | |
| 46 return; | |
| 47 event.preventDefault(); | |
| 48 this.asyncFire("navigate", { | |
| 49 url: a.pathname + a.search + a.hash | |
| 50 }); | |
| 51 }, | |
| 52 | |
| 53 findEnclosingLink: function(node) { | |
| 54 while (node && node.nodeName != "A") | |
| 55 node = node.parentNode; | |
| 56 return node; | |
| 57 }, | |
| 58 | |
| 59 enclosingTreeScope: function() { | |
| 60 var scope = this; | |
| 61 while (scope.parentNode) | |
| 62 scope = scope.parentNode; | |
| 63 return scope; | |
| 64 }, | |
| 65 }); | |
| 66 </script> | |
| 67 </polymer-element> | |
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