@difizen/mana-core
Version:
83 lines (80 loc) • 4.16 kB
JavaScript
function _typeof(o) { "@babel/helpers - typeof"; return _typeof = "function" == typeof Symbol && "symbol" == typeof Symbol.iterator ? function (o) { return typeof o; } : function (o) { return o && "function" == typeof Symbol && o.constructor === Symbol && o !== Symbol.prototype ? "symbol" : typeof o; }, _typeof(o); }
var _dec, _class;
function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, _toPropertyKey(descriptor.key), descriptor); } }
function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); Object.defineProperty(Constructor, "prototype", { writable: false }); return Constructor; }
function _toPropertyKey(t) { var i = _toPrimitive(t, "string"); return "symbol" == _typeof(i) ? i : String(i); }
function _toPrimitive(t, r) { if ("object" != _typeof(t) || !t) return t; var e = t[Symbol.toPrimitive]; if (void 0 !== e) { var i = e.call(t, r || "default"); if ("object" != _typeof(i)) return i; throw new TypeError("@@toPrimitive must return a primitive value."); } return ("string" === r ? String : Number)(t); }
import { Emitter } from '@difizen/mana-common';
import { singleton } from '@difizen/mana-syringe';
import { ApplicationContribution } from "./application";
import { WindowService } from "./application-protocol";
export var DefaultWindowService = (_dec = singleton({
contrib: [WindowService, ApplicationContribution]
}), _dec(_class = /*#__PURE__*/function () {
function DefaultWindowService() {
_classCallCheck(this, DefaultWindowService);
this.onUnloadEmitter = new Emitter();
}
_createClass(DefaultWindowService, [{
key: "onUnload",
get: function get() {
return this.onUnloadEmitter.event;
}
}, {
key: "onStart",
value: function onStart(app) {
this.frontendApplication = app;
this.registerUnloadListeners();
}
}, {
key: "canUnload",
value: function canUnload() {
var _this$frontendApplica;
// eslint-disable-next-line prefer-const
var confirmExit = 'never';
// TODO: core preferrence application.confirmExit
var preventUnload = (_this$frontendApplica = this.frontendApplication) === null || _this$frontendApplica === void 0 ? void 0 : _this$frontendApplica.onWillStop();
preventUnload = confirmExit === 'always' || preventUnload;
return confirmExit === 'never' || !preventUnload;
}
/**
* Implement the mechanism to detect unloading of the page.
*/
}, {
key: "registerUnloadListeners",
value: function registerUnloadListeners() {
var _this = this;
window.addEventListener('beforeunload', function (event) {
if (!_this.canUnload()) {
return _this.preventUnload(event);
}
return undefined;
});
// In a browser, `unload` is correctly fired when the page unloads, unlike Electron.
// If `beforeunload` is cancelled, the user will be prompted to leave or stay.
// If the user stays, the page won't be unloaded, so `unload` is not fired.
// If the user leaves, the page will be unloaded, so `unload` is fired.
window.addEventListener('unload', function () {
return _this.onUnloadEmitter.fire();
});
}
/**
* Notify the browser that we do not want to unload.
*
* Notes:
* - Shows a confirmation popup in browsers.
* - Prevents the window from closing without confirmation in electron.
*
* @param event The beforeunload event
*/
}, {
key: "preventUnload",
value: function preventUnload(event) {
event.returnValue = '';
event.preventDefault();
return '';
}
}]);
return DefaultWindowService;
}()) || _class);