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/* vim: set ts=2 sw=2 sts=2 et tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
class ASRouterNewTabHookInstance {
constructor() {
this._newTabMessageHandler = null;
this._parentProcessMessageHandler = null;
this._router = null;
this._clearChildMessages = (...params) =>
this._newTabMessageHandler === null
? Promise.resolve()
: this._newTabMessageHandler.clearChildMessages(...params);
this._clearChildProviders = (...params) =>
this._newTabMessageHandler === null
? Promise.resolve()
: this._newTabMessageHandler.clearChildProviders(...params);
this._updateAdminState = (...params) =>
this._newTabMessageHandler === null
? Promise.resolve()
: this._newTabMessageHandler.updateAdminState(...params);
}
/**
* Params:
* object - {
* messageHandler: message handler for parent process messages
* {
* handleCFRAction: Responds to CFR action and returns a Promise
* handleTelemetry: Logs telemetry events and returns nothing
* },
* router: ASRouter instance
* createStorage: function to create DB storage for ASRouter
* }
*/
async initialize({ messageHandler, router, createStorage }) {
this._parentProcessMessageHandler = messageHandler;
this._router = router;
if (!this._router.initialized) {
const storage = await createStorage();
await this._router.init({
storage,
sendTelemetry: this._parentProcessMessageHandler.handleTelemetry,
dispatchCFRAction: this._parentProcessMessageHandler.handleCFRAction,
clearChildMessages: this._clearChildMessages,
clearChildProviders: this._clearChildProviders,
updateAdminState: this._updateAdminState,
});
}
}
destroy() {
if (this._router?.initialized) {
this.disconnect();
this._router.uninit();
}
}
/**
* Connects new tab message handler to hook.
* Note: Should only ever be called on an initialized instance
* Params:
* newTabMessageHandler - {
* clearChildMessages: clears child messages and returns Promise
* clearChildProviders: clears child providers and returns Promise.
* updateAdminState: updates admin state and returns Promise
* }
* Returns: parentProcessMessageHandler
*/
connect(newTabMessageHandler) {
this._newTabMessageHandler = newTabMessageHandler;
return this._parentProcessMessageHandler;
}
/**
* Disconnects new tab message handler from hook.
*/
disconnect() {
this._newTabMessageHandler = null;
}
}
class AwaitSingleton {
constructor() {
this.instance = null;
const initialized = new Promise(resolve => {
this.setInstance = instance => {
this.setInstance = () => {};
this.instance = instance;
resolve(instance);
};
});
this.getInstance = () => initialized;
}
}
export const ASRouterNewTabHook = (() => {
const singleton = new AwaitSingleton();
const instance = new ASRouterNewTabHookInstance();
return {
getInstance: singleton.getInstance,
/**
* Param:
* params - see ASRouterNewTabHookInstance.init
*/
createInstance: async params => {
await instance.initialize(params);
singleton.setInstance(instance);
},
destroy: () => {
instance.destroy();
},
};
})();
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