//Conflicts with this script：EventRenameTabItemCount  https://resource.dopus.com/t/item-count-in-tab-name/43276/4
//Conflicts with this script：Tab-Labelizer  https://resource.dopus.com/t/tab-labelizer-extend-the-folder-names-shown-in-your-tabs/18075
function OnInit(initData) {
    initData.name = 'ShowTabIndex';
    initData.version = '2024-02-22';
    initData.copyright = '';
    initData.url = 'https://resource.dopus.com/t/showtabindex-show-the-position-index-number-in-folder-tab-name/49276';
    initData.desc = 'Add the index of folder tab to the beginning of tab name';
    initData.default_enable = true;
    initData.min_version = '12.0';
}

/*
function OnOpenTab(openTabData) {
    //DOpus.Output('*** OnOpenTab');
    AppendTabIndex(openTabData.tab);
}

function OnCloseTab(closeTabData) {
    //DOpus.Output('*** OnCloseTab');
    AppendTabIndex(closeTabData.tab);
}
*/

function OnActivateTab(activateTabData) {
    //DOpus.Output('*** OnActivateTab');
    AppendTabIndex(activateTabData.newtab);
}

function OnAfterFolderChange(afterFolderChangeData) {
    //DOpus.Output('*** OnAfterFolderChange');
	if (afterFolderChangeData.result)
		AppendTabIndex(afterFolderChangeData.tab);
}

var cmd = DOpus.Create().Command();
var fsu = DOpus.FSUtil();
var Letters = "-ABCDEFGHIJKLMNOPQRSTUVWXYZ";
//tab.lister.tabsleft tab.lister.tabsright tab.right tab.displayed_label
function AppendTabIndex(tab) {
	if (tab.right) tabs = tab.lister.tabsright;
	else tabs = tab.lister.tabsleft;
	
	var Index = 0;
	for (var e = new Enumerator(tabs); !e.atEnd(); e.moveNext()) {
		var path = e.item().path;
		if(DOpus.TypeOf(path) == "empty") break;//关闭标签时可能导致当前处理的标签正式已关闭的标签，其path为undefined，会报错
		//DOpus.Output((Index+1) + " -path: " + DOpus.TypeOf(path) + " / " + path);
		
		var driveLetter = "";
		
		var tabName = String(path);
		if (tabName != "") {
			var drive = path.drive;
			if (drive)
				driveLetter = Letters[drive] + ":";
			
			//::开头的是此电脑、回收站等; 桌面是/desktop; coll://是文件收集; lib://是库; ftp://, 这些都需要fsu.DisplayName解析
			tabName = fsu.DisplayName(tabName);
			var newPath = fsu.NewPath(tabName)
			if (tabName.substring(0, 4) == 'lib:') 
				tabName = "lib:" + newPath.filepart;
			else if (tabName.substring(0, 5) == 'coll:') 
				tabName = "coll:" + newPath.filepart;
			else if (tabName.substring(0, 4) == 'ftp:') 
				tabName = "ftp:" + newPath.filepart;
			else tabName = newPath.filepart;
			//DOpus.Output("tabName3:" + tabName);
		}

		var tabIndex = String(++Index)+":";
        var newTabName = tabIndex + driveLetter + tabName;
		cmd.SetSourceTab(e.item());//may error;关闭标签时可能导致当前处理的标签正式已关闭的标签，导致此行报错
		cmd.RunCommand('Go TABNAME="' + newTabName + '"');
	}
}