Created
June 30, 2015 03:24
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Polymer 1.0 Global Variables Behavior
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| { | |
| "name": "polymer-globals-behavior", | |
| "dependencies": { | |
| "polymer": "Polymer/polymer#~1.0.5" | |
| } | |
| } |
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| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <title>Globals Behavior Example</title> | |
| <link rel="import" href="bower_components/polymer/polymer.html"> | |
| <link rel="import" href="globals-enabled-element.html"> | |
| </head> | |
| <body> | |
| <template is="dom-bind"> | |
| <globals-enabled-element id="element1"></globals-enabled-element> | |
| <globals-enabled-element id="element2"></globals-enabled-element> | |
| </template> | |
| </body> | |
| </html> |
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| <script> | |
| var instances = []; | |
| var dataGlobal = {}; | |
| var GlobalsBehaviour = { | |
| properties: { | |
| globals: { | |
| type: Object, | |
| notify: true, | |
| value: dataGlobal | |
| } | |
| }, | |
| ready: function() { | |
| var _setOrig = this.set; | |
| var _notifyPathOrig = this.notifyPath; | |
| this.set = function() { | |
| _setOrig.apply(this, arguments); | |
| if (arguments[0].split(".")[0] === "globals") { | |
| this.invokeInstances(_notifyPathOrig, arguments); | |
| } | |
| }; | |
| this.notifyPath = function(path, value) { | |
| _notifyPathOrig.apply(this, arguments); | |
| if (arguments[0].split(".")[0] === "globals") { | |
| this.invokeInstances(_notifyPathOrig, arguments); | |
| } | |
| }; | |
| }, | |
| invokeInstances: function(fn, args) { | |
| var i; | |
| for (i = 0; i < instances.length; i++) { | |
| instance = instances[i]; | |
| if (instance !== this) { | |
| fn.apply(instance, args); | |
| } | |
| } | |
| }, | |
| attached: function() { | |
| instances.push(this); | |
| }, | |
| detached: function() { | |
| var i; | |
| i = instances.indexOf(this); | |
| if (i >= 0) { | |
| instances.splice(i, 1); | |
| } | |
| } | |
| }; | |
| </script> |
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| <link rel="import" href="globals-behavior.html"> | |
| <dom-module id="globals-enabled-element"> | |
| <template> | |
| <input type="text" value="{{globals.my_variable::input}}"> | |
| </template> | |
| <script> | |
| Polymer({ | |
| is: 'globals-enabled-element', | |
| behaviors: [GlobalsBehaviour] | |
| }); | |
| </script> | |
| </dom-module> |
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