b38dea0597
Share Gaia assets and adapters, keep private profiles and development documents local, and update both public READMEs.
65 lines
1.5 KiB
JavaScript
Executable file
65 lines
1.5 KiB
JavaScript
Executable file
/* global BaseModule */
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'use strict';
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(function(exports) {
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/**
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* This is the feature detector module of the system app.
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* It is responsible to retrieve device specific information.
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*/
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var FeatureDetector = function() {
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};
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FeatureDetector.SERVICES = [
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'getDeviceMemory'
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];
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FeatureDetector.STATES = [
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'getDeviceType'
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];
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BaseModule.create(FeatureDetector, {
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name: 'FeatureDetector',
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deviceType: 'phone',
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_deviceMemoryPromise: null,
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_start: function() {
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this._getDeviceType();
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this._getDeviceMemory();
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},
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_stop: function() {
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this.deviceType = null;
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this._deviceMemoryPromise = null;
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},
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_getDeviceType: function() {
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// `_GAIA_DEVICE_TYPE_` is a placeholder and will be replaced by real
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// device type in build time, `system/build/build.js` does the trick.
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this.deviceType = '_GAIA_DEVICE_TYPE_';
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},
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getDeviceType: function() {
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return this.deviceType;
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},
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_getDeviceMemory: function() {
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if ('getFeature' in navigator) {
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this._deviceMemoryPromise =
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navigator.getFeature('hardware.memory').catch(() => {
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this.error('Failed to retrieve total memory of the device.');
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// Return the failsafe value.
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return 0;
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});
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} else {
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this.error('navigator.getFeature is not available.');
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this._deviceMemoryPromise = Promise.resolve(0);
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}
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},
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getDeviceMemory: function() {
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return this._deviceMemoryPromise;
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}
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});
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}(window));
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