michael@0: /* Any copyright is dedicated to the Public Domain.
michael@0:    http://creativecommons.org/publicdomain/zero/1.0/ */
michael@0: 
michael@0: function test() {
michael@0:   waitForExplicitFinish();
michael@0: 
michael@0:   newWindowWithTabView(function (win) {
michael@0:     let cw = win.TabView.getContentWindow();
michael@0: 
michael@0:     // turn off zoom animations
michael@0:     cw.gPrefBranch.setBoolPref("animate_zoom", false);
michael@0: 
michael@0:     registerCleanupFunction(function () {
michael@0:       cw.gPrefBranch.clearUserPref("animate_zoom");
michael@0:       win.close();
michael@0:     });
michael@0: 
michael@0:     let group = cw.GroupItems.groupItems[0];
michael@0:     group.setSize(100, 100, true);
michael@0: 
michael@0:     while (!group.isStacked())
michael@0:       win.gBrowser.addTab();
michael@0: 
michael@0:     waitForFocus(function () {
michael@0:       whenGroupIsExpanded(group, function () {
michael@0:         ok(win.TabView.isVisible(), "tabview is visible");
michael@0:         finish();
michael@0:       });
michael@0: 
michael@0:       let expander = group.$expander[0];
michael@0:       EventUtils.synthesizeMouseAtCenter(expander, {}, cw);
michael@0:     }, cw);
michael@0:   });
michael@0: }
michael@0: 
michael@0: // ----------
michael@0: function whenGroupIsExpanded(group, callback) {
michael@0:   group.addSubscriber("expanded", function onExpanded() {
michael@0:     group.removeSubscriber("expanded", onExpanded);
michael@0:     executeSoon(callback);
michael@0:   });
michael@0: }