[firefox] hacking tabundle extension: only list tabs in current group (panorama)

Tabundle.createGroupListHtml.js

//extensions/tabundle@relucks.org/chrome/content/tabundle.js
Tabundle.createGroupListHtml = function() {
    var height = window.innerHeight;
    var currentGroup = TabView._window.GroupItems.getActiveGroupItem();
    var list = Array.map(currentGroup._children, function(tabitem) {
        var w = gBrowser.getBrowserForTab(tabitem.tab).contentWindow
        var c = Tabundle.capture(w, {x: 0, y:0}, {h: height, w: w.innerWidth}, 0.3)
        return [w.document.title, w.location.href, c]
    })
    var date = Tabundle.dateString();
    var size = currentGroup._children.length.toString();
    var group = currentGroup.getTitle();
    var opt = {
        list: list,
        size: size,
        date: date,
        title: "[" + group + "]: " + size + 'tabs ' + date,
        fav: Tabundle.icon(size).toDataURL(),
        style: Tabundle.style()
    }
    var html = Tabundle.listHtml(opt)
    var fileName = date + "-" + group + '.html'
    var out = Tabundle.IOUtils.getFile(Tabundle.getHtmlDir())
    out.append(fileName);
    var path = out.path;

    if (out.exists()) {
        var opt = {
            mode: Components.interfaces.nsIFilePicker.modeSave,
            defaultString: fileName,
            displayDirectory: Tabundle.IOUtils.getFile(Tabundle.getHtmlDir()),
            filters: Components.interfaces.nsIFilePicker.filterHTML
        }
        path = Tabundle.selectFile(opt)
    }

    if (path) {
        Tabundle.IOUtils.write(path, html)
        return path
    }
}

//then replace all occurrence of `createListHtml' to `createGroupListHtml'

to support groups of TabGroups Manager, the first lines should be:

Tabundle.createGroupListHtml = function() {
    var height = window.innerHeight;
    var currentGroup = TabGroupsManager.allGroups.selectedGroup;
    var list = Array.map(currentGroup.tabArray, function(tabitem) {
        var w = gBrowser.getBrowserForTab(tabitem).contentWindow
        var c = Tabundle.capture(w, {x: 0, y:0}, {h: height, w: w.innerWidth}, 0.3)
        return [w.document.title, w.location.href, c]
    })
    var date = Tabundle.dateString();
    var size = currentGroup.tabArray.length.toString();
    var group = currentGroup.name || "noname";
    //...