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:   let cw;
michael@0:   let win;
michael@0: 
michael@0:   waitForExplicitFinish();
michael@0: 
michael@0:   newWindowWithTabView(function (tvwin) {
michael@0:     win = tvwin;
michael@0:     cw = win.TabView.getContentWindow();
michael@0: 
michael@0:     registerCleanupFunction(function () {
michael@0:       if (win && !win.closed)
michael@0:         win.close();
michael@0:     });
michael@0: 
michael@0:     // fill the group item with some tabs
michael@0:     for (let i = 0; i < 5; i++)
michael@0:       win.gBrowser.loadOneTab("about:blank");
michael@0: 
michael@0:     let groupItem = cw.GroupItems.groupItems[0];
michael@0:     groupItem.setSize(400, 400, true);
michael@0:     let range = new cw.Range(1, 400);
michael@0: 
michael@0:     // determine the groupItem's largest possible stacked size
michael@0:     while (range.extent > 1) {
michael@0:       let pivot = Math.floor(range.extent / 2);
michael@0:       groupItem.setSize(range.min + pivot, range.min + pivot, true);
michael@0: 
michael@0:       if (groupItem.isStacked())
michael@0:         range.min += pivot;
michael@0:       else
michael@0:         range.max -= pivot;
michael@0:     }
michael@0: 
michael@0:     // stack the group
michael@0:     groupItem.setSize(range.min, range.min, true);
michael@0:     ok(groupItem.isStacked(), "groupItem is stacked");
michael@0: 
michael@0:     // one step back to un-stack the groupItem
michael@0:     groupItem.setSize(range.max, range.max, true);
michael@0:     ok(!groupItem.isStacked(), "groupItem is no longer stacked");
michael@0: 
michael@0:     // check that close buttons are visible
michael@0:     let tabItem = groupItem.getChild(0);
michael@0:     isnot(tabItem.$close.css("display"), "none", "close button is visible");
michael@0: 
michael@0:     finish();
michael@0:   });
michael@0: }