Advance select tab for Tree Style Tab and mouse gestures

advanceSelectedTab.js

gBrowser.tabContainer.advanceSelectedTab(1 /* 1 or -1 */, true);
if("TreeStyleTabService" in window) {
	const ns = "__mouseGesturesTabsSwitcher__";
	var autoExpandDelay = (
		"TreeStyleTabUtils" in window
			? TreeStyleTabUtils
			: TreeStyleTabService
		).getTreePref("autoExpandSubtreeOnSelect.whileFocusMovingByShortcut.delay") || 800;
	var ts = ns in window && window[ns];
	if(!ts) {
		ts = window[ns] = {
			timer: 0,
			handleEvent: function(e) {
				window.removeEventListener("mouseup", this, true);
				this.clearDelayed();
				delete window[ns];
			},
			clear: function() {
				clearTimeout(this.timer);
				if("treeStyleTab" in gBrowser && "cancelDelayedExpandOnTabSelect" in gBrowser.treeStyleTab)
					gBrowser.treeStyleTab.cancelDelayedExpandOnTabSelect();
			},
			clearDelayed: function() {
				setTimeout(function(_this) {
					_this.clear();
				}, 10, this);
			}
		};
		window.addEventListener("mouseup", ts, true);
	}
	ts.clear();
	ts.tab = gBrowser.selectedTab;
	ts.timer = setTimeout(function() {
		var tab = gBrowser.selectedTab;
		if(tab == ts.tab)
			gBrowser.treeStyleTab.collapseExpandSubtree(tab, false);
	}, autoExpandDelay);
}

History of this script: piroor/treestyletab#232