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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 { XPCOMUtils } from "resource://gre/modules/XPCOMUtils.sys.mjs";
const lazy = {};
ChromeUtils.defineESModuleGetters(lazy, {
SessionStore: "resource:///modules/sessionstore/SessionStore.sys.mjs",
});
XPCOMUtils.defineLazyModuleGetters(lazy, {
TabCrashHandler: "resource:///modules/ContentCrashHandlers.jsm",
});
// A list of all of the open about:tabcrashed pages.
let gAboutTabCrashedPages = new Map();
export class AboutTabCrashedParent extends JSWindowActorParent {
didDestroy() {
this.removeCrashedPage();
}
async receiveMessage(message) {
let browser = this.browsingContext.top.embedderElement;
if (!browser) {
// If there is no browser, remove the crashed page from the set
// and return.
this.removeCrashedPage();
return;
}
let gBrowser = browser.getTabBrowser();
let tab = gBrowser.getTabForBrowser(browser);
switch (message.name) {
case "Load": {
gAboutTabCrashedPages.set(this, browser);
this.updateTabCrashedCount();
let report = lazy.TabCrashHandler.onAboutTabCrashedLoad(browser);
this.sendAsyncMessage("SetCrashReportAvailable", report);
break;
}
case "closeTab": {
lazy.TabCrashHandler.maybeSendCrashReport(browser, message);
gBrowser.removeTab(tab, { animate: true });
break;
}
case "restoreTab": {
lazy.TabCrashHandler.maybeSendCrashReport(browser, message);
lazy.SessionStore.reviveCrashedTab(tab);
break;
}
case "restoreAll": {
lazy.TabCrashHandler.maybeSendCrashReport(browser, message);
lazy.SessionStore.reviveAllCrashedTabs();
break;
}
}
}
removeCrashedPage() {
let browser =
this.browsingContext.top.embedderElement ||
gAboutTabCrashedPages.get(this);
gAboutTabCrashedPages.delete(this);
this.updateTabCrashedCount();
lazy.TabCrashHandler.onAboutTabCrashedUnload(browser);
}
updateTabCrashedCount() {
// Broadcast to all about:tabcrashed pages a count of
// how many about:tabcrashed pages exist, so that they
// can decide whether or not to display the "Restore All
// Crashed Tabs" button.
let count = gAboutTabCrashedPages.size;
for (let actor of gAboutTabCrashedPages.keys()) {
let browser = actor.browsingContext.top.embedderElement;
if (browser) {
browser.sendMessageToActor("UpdateCount", { count }, "AboutTabCrashed");
}
}
}
}
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