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Side by Side Diff: polymer_1.0.4/bower_components/iron-signals/iron-signals.html

Issue 1205703007: Add polymer 1.0 to npm_modules (Closed) Base URL: https://chromium.googlesource.com/infra/third_party/npm_modules.git@master
Patch Set: Renamed folder to 1.0.4 Created 5 years, 5 months ago
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1 <!-- 1 <!--
2 Copyright (c) 2014 The Polymer Project Authors. All rights reserved. 2 @license
3 This code may only be used under the BSD style license found at http://polymer.g ithub.io/LICENSE 3 Copyright (c) 2015 The Polymer Project Authors. All rights reserved.
4 The complete set of authors may be found at http://polymer.github.io/AUTHORS 4 This code may only be used under the BSD style license found at http://polymer.g ithub.io/LICENSE.txt
5 The complete set of contributors may be found at http://polymer.github.io/CONTRI BUTORS 5 The complete set of authors may be found at http://polymer.github.io/AUTHORS.txt
6 The complete set of contributors may be found at http://polymer.github.io/CONTRI BUTORS.txt
6 Code distributed by Google as part of the polymer project is also 7 Code distributed by Google as part of the polymer project is also
7 subject to an additional IP rights grant found at http://polymer.github.io/PATEN TS 8 subject to an additional IP rights grant found at http://polymer.github.io/PATEN TS.txt
8 --> 9 -->
9 <link rel="import" href="../polymer/polymer.html"> 10 <link rel="import" href="../polymer/polymer.html">
10 11
11 <!-- 12 <script>
12 `core-signals` provides basic publish-subscribe functionality. 13 (function(){
14 /**
15 `iron-signals` provides basic publish-subscribe functionality.
13 16
14 Note: avoid using `core-signals` whenever you can use 17 Note: avoid using `iron-signals` whenever you can use
15 a controller (parent element) to mediate communication 18 a controller (parent element) to mediate communication
16 instead. 19 instead.
17 20
18 To send a signal, fire a custom event of type `core-signal`, with 21 To send a signal, fire a custom event of type `iron-signal`, with
19 a detail object containing `name` and `data` fields. 22 a detail object containing `name` and `data` fields.
20 23
21 this.fire('core-signal', {name: 'hello', data: null}); 24 this.fire('iron-signal', {name: 'hello', data: null});
22
23 To receive a signal, listen for `core-signal-<name>` event on a
24 `core-signal` element.
25 25
26 <core-signal on-core-signal-hello="{{helloSignal}}"> 26 To receive a signal, listen for `iron-signal-<name>` event on a
27 `iron-signals` element.
27 28
28 You can fire a signal event from anywhere, and all 29 <iron-signals on-iron-signal-hello="{{helloSignal}}">
29 `core-signal` elements will receive the event, regardless 30
31 You can fire a signal event from anywhere, and all
32 `iron-signals` elements will receive the event, regardless
30 of where they are in DOM. 33 of where they are in DOM.
31 34
32 @group Polymer Core Elements 35 @demo demo/index.html
33 @element core-signals 36 */
34 @status stable
35 @homepage github.io
36 -->
37 <polymer-element name="core-signals">
38 <script>
39 (function(){
40
41 Polymer({ 37 Polymer({
38 is: 'iron-signals',
39
42 attached: function() { 40 attached: function() {
43 signals.push(this); 41 signals.push(this);
44 }, 42 },
45 removed: function() { 43 detached: function() {
46 var i = signals.indexOf(this); 44 var i = signals.indexOf(this);
47 if (i >= 0) { 45 if (i >= 0) {
48 signals.splice(i, 1); 46 signals.splice(i, 1);
49 } 47 }
50 } 48 }
51 }); 49 });
52 50
53 // private shared database 51 // private shared database
54 var signals = []; 52 var signals = [];
55 53
56 // signal dispatcher 54 // signal dispatcher
57 function notify(name, data) { 55 function notify(name, data) {
58 // convert generic-signal event to named-signal event 56 // convert generic-signal event to named-signal event
59 var signal = new CustomEvent('core-signal-' + name, { 57 var signal = new CustomEvent('iron-signal-' + name, {
60 // if signals bubble, it's easy to get confusing duplicates 58 // if signals bubble, it's easy to get confusing duplicates
61 // (1) listen on a container on behalf of local child 59 // (1) listen on a container on behalf of local child
62 // (2) some deep child ignores the event and it bubbles 60 // (2) some deep child ignores the event and it bubbles
63 // up to said container 61 // up to said container
64 // (3) local child event bubbles up to container 62 // (3) local child event bubbles up to container
65 // also, for performance, we avoid signals flying up the 63 // also, for performance, we avoid signals flying up the
66 // tree from all over the place 64 // tree from all over the place
67 bubbles: false, 65 bubbles: false,
68 detail: data 66 detail: data
69 }); 67 });
70 // dispatch named-signal to all 'signals' instances, 68 // dispatch named-signal to all 'signals' instances,
71 // only interested listeners will react 69 // only interested listeners will react
72 signals.forEach(function(s) { 70 signals.forEach(function(s) {
73 s.dispatchEvent(signal); 71 s.dispatchEvent(signal);
74 }); 72 });
75 } 73 }
76 74
77 // signal listener at document 75 // signal listener at document
78 document.addEventListener('core-signal', function(e) { 76 document.addEventListener('iron-signal', function(e) {
79 notify(e.detail.name, e.detail.data); 77 notify(e.detail.name, e.detail.data);
80 }); 78 });
81 79
82 })(); 80 })();
83 </script> 81 </script>
84 </polymer-element>
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