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/* 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/. */
import { GeckoViewUtils } from "resource://gre/modules/GeckoViewUtils.sys.mjs";
const { debug, warn } = GeckoViewUtils.initLogging("Module");
export class GeckoViewModule {
static initLogging(aModuleName) {
const tag = aModuleName.replace("GeckoView", "");
return GeckoViewUtils.initLogging(tag);
}
constructor(aModuleInfo) {
this._info = aModuleInfo;
this._isContentLoaded = false;
this._eventProxy = new EventProxy(this, this.eventDispatcher);
this.onInitBrowser();
}
get name() {
return this._info.name;
}
get enabled() {
return this._info.enabled;
}
get window() {
return this.moduleManager.window;
}
getActor(aActorName) {
return this.moduleManager.getActor(aActorName);
}
get browser() {
return this.moduleManager.browser;
}
get messageManager() {
return this.moduleManager.messageManager;
}
get eventDispatcher() {
return this.moduleManager.eventDispatcher;
}
get settings() {
return this.moduleManager.settings;
}
get moduleManager() {
return this._info.manager;
}
// Override to initialize the browser before it is bound to the window.
onInitBrowser() {}
// Override to cleanup when the browser is destroyed.
onDestroyBrowser() {}
// Override to initialize module.
onInit() {}
// Override to cleanup when the window is closed
onDestroy() {}
// Override to detect settings change. Access settings via this.settings.
onSettingsUpdate() {}
// Override to enable module after setting a Java delegate.
onEnable() {}
// Override to disable module after clearing the Java delegate.
onDisable() {}
// Override to perform actions when content module has started loading;
// by default, pause events so events that depend on content modules can work.
onLoadContentModule() {
this._eventProxy.enableQueuing(true);
}
// Override to perform actions when content module has finished loading;
// by default, un-pause events and flush queued events.
onContentModuleLoaded() {
this._eventProxy.enableQueuing(false);
this._eventProxy.dispatchQueuedEvents();
}
registerListener(aEventList) {
this._eventProxy.registerListener(aEventList);
}
unregisterListener(aEventList) {
this._eventProxy.unregisterListener(aEventList);
}
}
class EventProxy {
constructor(aListener, aEventDispatcher) {
this.listener = aListener;
this.eventDispatcher = aEventDispatcher;
this._eventQueue = [];
this._registeredEvents = [];
this._enableQueuing = false;
}
registerListener(aEventList) {
debug`registerListener ${aEventList}`;
this.eventDispatcher.registerListener(this, aEventList);
this._registeredEvents = this._registeredEvents.concat(aEventList);
}
unregisterListener(aEventList) {
debug`unregisterListener`;
if (this._registeredEvents.length === 0) {
return;
}
if (!aEventList) {
this.eventDispatcher.unregisterListener(this, this._registeredEvents);
this._registeredEvents = [];
} else {
this.eventDispatcher.unregisterListener(this, aEventList);
this._registeredEvents = this._registeredEvents.filter(
e => !aEventList.includes(e)
);
}
}
onEvent(aEvent, aData, aCallback) {
if (this._enableQueuing) {
debug`queue ${aEvent}, data=${aData}`;
this._eventQueue.unshift(arguments);
} else {
this._dispatch(...arguments);
}
}
enableQueuing(aEnable) {
debug`enableQueuing ${aEnable}`;
this._enableQueuing = aEnable;
}
_dispatch(aEvent, aData, aCallback) {
debug`dispatch ${aEvent}, data=${aData}`;
if (this.listener.onEvent) {
this.listener.onEvent(...arguments);
} else {
this.listener(...arguments);
}
}
dispatchQueuedEvents() {
debug`dispatchQueued`;
while (this._eventQueue.length) {
const args = this._eventQueue.pop();
this._dispatch(...args);
}
}
}
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