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24 lines
666 B
24 lines
666 B
var Emitter = require('./Emitter'); |
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exports = Emitter.extend({ |
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className: 'MediaQuery', |
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initialize: function(query) { |
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var _this = this; |
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this.callSuper(Emitter, 'initialize'); |
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this._listener = function() { |
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_this.emit(_this.isMatch() ? 'match' : 'unmatch'); |
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}; |
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this.setQuery(query); |
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}, |
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setQuery: function(query) { |
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if (this._mql) { |
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this._mql.removeListener(this._listener); |
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} |
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this._mql = window.matchMedia(query); |
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this._mql.addListener(this._listener); |
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}, |
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isMatch: function() { |
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return this._mql.matches; |
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} |
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}); |
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module.exports = exports;
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