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/*****************************************************************************
* Open MCT, Copyright (c) 2014-2021, United States Government
* as represented by the Administrator of the National Aeronautics and Space
* Administration. All rights reserved.
*
* Open MCT is licensed under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
* http://www.apache.org/licenses/LICENSE-2.0.
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*
* Open MCT includes source code licensed under additional open source
* licenses. See the Open Source Licenses file (LICENSES.md) included with
* this source code distribution or the Licensing information page available
* at runtime from the About dialog for additional information.
*****************************************************************************/
/**
* The query service handles calls for browser and userAgent
* info using a comparison between the userAgent and key
* device names
* @constructor
* @param window the broser object model
* @memberof /utils/agent
*/
export default class Agent {
constructor(window) {
const userAgent = window.navigator.userAgent;
const matches = userAgent.match(/iPad|iPhone|Android/i) || [];
this.userAgent = userAgent;
this.mobileName = matches[0];
this.window = window;
this.touchEnabled = (window.ontouchstart !== undefined);
}
/**
* Check if the user is on a mobile device.
* @returns {boolean} true on mobile
*/
isMobile() {
return Boolean(this.mobileName);
}
/**
* Check if the user is on a phone-sized mobile device.
* @returns {boolean} true on a phone
*/
isPhone() {
if (this.isMobile()) {
if (this.isAndroidTablet()) {
return false;
} else if (this.mobileName === 'iPad') {
return false;
} else {
return true;
}
} else {
return false;
}
}
/**
* Check if the user is on a tablet sized android device
* @returns {boolean} true on an android tablet
*/
isAndroidTablet() {
if (this.mobileName === 'Android') {
if (this.isPortrait() && this.window.innerWidth >= 768) {
return true;
} else if (this.isLandscape() && this.window.innerHeight >= 768) {
return true;
}
} else {
return false;
}
}
/**
* Check if the user is on a tablet-sized mobile device.
* @returns {boolean} true on a tablet
*/
isTablet() {
return (this.isMobile() && !this.isPhone() && this.mobileName !== 'Android') || (this.isMobile() && this.isAndroidTablet());
}
/**
* Check if the user's device is in a portrait-style
* orientation (display width is narrower than display height.)
* @returns {boolean} true in portrait mode
*/
isPortrait() {
return this.window.innerWidth < this.window.innerHeight;
}
/**
* Check if the user's device is in a landscape-style
* orientation (display width is greater than display height.)
* @returns {boolean} true in landscape mode
*/
isLandscape() {
return !this.isPortrait();
}
/**
* Check if the user's device supports a touch interface.
* @returns {boolean} true if touch is supported
*/
isTouch() {
return this.touchEnabled;
}
/**
* Check if the user agent matches a certain named device,
* as indicated by checking for a case-insensitive substring
* match.
* @param {string} name the name to check for
* @returns {boolean} true if the user agent includes that name
*/
isBrowser(name) {
name = name.toLowerCase();
return this.userAgent.toLowerCase().indexOf(name) !== -1;
}
}
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