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/* vim: se cin sw=2 ts=2 et filetype=javascript :
* 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
const kWidgetId = "taskbar-tabs-button";
import { AppConstants } from "resource://gre/modules/AppConstants.sys.mjs";
let lazy = {};
ChromeUtils.defineESModuleGetters(lazy, {
PrivateBrowsingUtils: "resource://gre/modules/PrivateBrowsingUtils.sys.mjs",
TaskbarTabs: "resource:///modules/taskbartabs/TaskbarTabs.sys.mjs",
TaskbarTabsUtils: "resource:///modules/taskbartabs/TaskbarTabsUtils.sys.mjs",
});
ChromeUtils.defineLazyGetter(lazy, "logConsole", () => {
return console.createInstance({
prefix: "TaskbarTabs",
maxLogLevel: "Warn",
});
});
/**
* Object which handles Taskbar Tabs page actions.
*/
export const TaskbarTabsPageAction = {
// Set of tabs currently being processed due to a page action event.
_processingTabs: new Set(),
/**
* Connects a listener to the Taskbar Tabs page action.
*
* @param {DOMWindow} aWindow - The browser window.
*/
init(aWindow) {
let isPopupWindow = !aWindow.toolbar.visible;
let isPrivate = lazy.PrivateBrowsingUtils.isWindowPrivate(aWindow);
if (isPopupWindow || isPrivate || AppConstants.platform != "win") {
lazy.logConsole.info("Not initializing Taskbar Tabs Page Action.");
return;
}
lazy.logConsole.info("Initializing Taskbar Tabs Page Action.");
let taskbarTabsButton = aWindow.document.getElementById(kWidgetId);
taskbarTabsButton.addEventListener("click", this, true);
initVisibilityChanges(aWindow, taskbarTabsButton);
},
/**
* Handles the clicking of the page action button associated with Taskbar
* Tabs.
*
* @param {Event} aEvent - The event triggered by the Taskbar Tabs page
* action.
* @returns {Promise} Resolves once the event has been handled.
*/
async handleEvent(aEvent) {
if (aEvent.button != 0) {
// Only handle left-click events.
return;
}
let window = aEvent.target.ownerGlobal;
let currentTab = window.gBrowser.selectedTab;
if (this._processingTabs.has(currentTab)) {
// Button was clicked before last input finished processing for the tab,
// discard to avoid racing. Don't bother buffering input - clicking
// repeatedly before input is processed is not meaningful.
lazy.logConsole.debug(
`Page Action still processing for tab, dropping input.`
);
return;
}
lazy.logConsole.debug(`Blocking Page Action input for tab.`);
this._processingTabs.add(currentTab);
try {
let isTaskbarTabWindow = lazy.TaskbarTabsUtils.isTaskbarTabWindow(window);
if (!isTaskbarTabWindow) {
lazy.logConsole.info("Opening new Taskbar Tab via Page Action.");
// Move tab to a Taskbar Tabs window.
let browser = currentTab.linkedBrowser;
let url = browser.currentURI;
let userContextId =
browser.contentPrincipal.originAttributes.userContextId;
let taskbarTab = await lazy.TaskbarTabs.findOrCreateTaskbarTab(
url,
userContextId
);
await lazy.TaskbarTabs.replaceTabWithWindow(taskbarTab, currentTab);
} else {
lazy.logConsole.info("Closing Taskbar Tab via Page Action.");
// Move tab to a regular browser window.
let id = lazy.TaskbarTabsUtils.getTaskbarTabIdFromWindow(window);
await lazy.TaskbarTabs.ejectWindow(window);
if (!(await lazy.TaskbarTabs.getCountForId(id))) {
lazy.logConsole.info("Uninstalling Taskbar Tab via Page Action.");
await lazy.TaskbarTabs.removeTaskbarTab(id);
}
}
} finally {
lazy.logConsole.debug(`Unblocking Page Action input for tab.`);
this._processingTabs.delete(currentTab);
}
},
};
/**
* Shows or hides the page action as the user navigates.
*
* @param {Window} aWindow - The window that contains the page action.
* @param {Element} aElement - The element that makes up the page action.
*/
function initVisibilityChanges(aWindow, aElement) {
// Filled in at the end; memoized to avoid performance failures.
let isTaskbarTabsEnabled = false;
const shouldHide = aLocation =>
!(aLocation.scheme.startsWith("http") && isTaskbarTabsEnabled);
aWindow.gBrowser.addProgressListener({
onLocationChange(aWebProgress, aRequest, aLocation) {
if (aWebProgress.isTopLevel) {
aElement.hidden = shouldHide(aLocation);
}
},
});
const observer = () => {
isTaskbarTabsEnabled = lazy.TaskbarTabsUtils.isEnabled();
aElement.hidden = shouldHide(aWindow.gBrowser.currentURI);
};
Services.prefs.addObserver("browser.taskbarTabs.enabled", observer);
aWindow.addEventListener("unload", function () {
Services.prefs.removeObserver("browser.taskbarTabs.enabled", observer);
});
observer();
}