Расширения для Firefox/Mozilla Firefox Extensions (часть 8) - [1236] :: Программы

/*global Components, Services*/

const Cu = Components.utils, Cc = Components.classes, Ci = Components.interfaces;

Cu.import("resource://gre/modules/Services.jsm");

const overlay = "chrome://browser/content/bookmarks/bookmarksPanel.xul";

function sidebar_change(sidebar) {
    if (sidebar.currentURI.spec !== overlay) {
        return false;
    }

    var bookmarks = sidebar.contentDocument.getElementById("bookmarks-view"), place;

    if (!bookmarks || !(place = bookmarks.getAttribute("place"))) {
        return false;
    }

    bookmarks.setAttribute("place-default", place);
    bookmarks.place = "place:queryType=1&folder=BOOKMARKS_MENU";

    return true;
}

function sidebar_restore(sidebar) {
    if (sidebar.currentURI.spec !== overlay) {
        return false;
    }

    var bookmarks = sidebar.contentDocument.getElementById("bookmarks-view"), place;

    if (!bookmarks || !(place = bookmarks.getAttribute("place-default"))) {
        return false;
    }

    bookmarks.place = place;
    bookmarks.removeAttribute("place-default");

    return true;
}

function window_load(doc) {
    var sidebar = doc.getElementById("sidebar");

    if (!sidebar) {
        return false;
    }

    var stop = Ci.nsIWebProgressListener.STATE_STOP, win = Ci.nsIWebProgressListener.STATE_IS_WINDOW;
    sidebar.addProgressListener(sidebar.old_bookmarks_sidebar = {
        QueryInterface: function (id)
        {
            if (id.equals(Ci.nsIWebProgressListener) || id.equals(Ci.nsISupportsWeakReference) || id.equals(Ci.nsISupports)) {
                return this;
            }

            throw Components.results.NS_NOINTERFACE;
        },

        onStateChange: function (progress, request, flag) {
            return flag & stop && flag & win ? sidebar_change(sidebar) : false;
        },
        onLocationChange: function () {},
        onProgressChange: function () {},
        onStatusChange: function () {},
        onSecurityChange: function () {}
    });

    return sidebar_change(sidebar);
}

function window_unload(doc) {
    var sidebar = doc.getElementById("sidebar");

    if (!sidebar) {
        return false;
    }

    sidebar.removeProgressListener(sidebar.old_bookmarks_sidebar);

    return sidebar_restore(sidebar);
}

function window_check(win) {
    if (win.document.readyState === "complete") {
        return window_load(win.document);
    }

    return win.addEventListener("load", function listener() {
        win.removeEventListener("load", listener, false);

        return window_load(win.document);
    }, false);
}

const window_watcher = {
    observe: function (win, action) {
        return action === "domwindowopened" ? window_check(win) : false;
    }
};

function startup() {
    var all = Services.ww.getWindowEnumerator();
    while (all.hasMoreElements()) {
        window_check(all.getNext());
    }

    return Services.ww.registerNotification(window_watcher);
}

function shutdown() {
    var all = Services.ww.getWindowEnumerator();
    while (all.hasMoreElements()) {
        window_unload(all.getNext().document);
    }

    return Services.ww.unregisterNotification(window_watcher);
}

Модерирует : gyra, Maz
gyra (16-09-2017 13:48): Расширения для Firefox/Mozilla Firefox Extensions (часть 9)	Версия для печати • Подписаться • Добавить в закладки
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