Titanium tabs accumulating when opening new windows - tabs

Question

I have a list of courses in rows like this:
Whenever I click a row, a new tab is created, and a new window is added to that tab showing the course info.
Then if I press back, it goes back to the courses window, which is great, but when I click another course it adds that to the list of tabs, so it starts looking like this:
Whereas, there should only be two tabs here, the Courses tab and Get Courses tab.
In get_courses.js (the file that deals with making the rows) I have this event listener which creates a new tab every time a row is clicked (which I'm sure is where my mistake is, I'm just not sure how to fix it):
table.addEventListener("click",function(e){
var courseInfo_window = Titanium.UI.createWindow({
title:e.rowData.title,
url:'get_courseInfo.js',
courseIMISCode: e.rowData.courseIMISCode
});
var courseInfo_tab = Titanium.UI.createTab({
title:'Course Info',
window:courseInfo_window
});
Titanium.UI.currentTabGroup.addTab(courseInfo_tab);
});
Which I want to be there to create a Course Info tab, but then in get_courseInfo.js I have this, possibly redundant code:
Ti.UI.currentTabGroup.activeTab.open(courseInfo_window);
Which, in my noob mind seems necessary to open my courseInfo_window, but is accumulating the tabs in the bottom (as shown in the image earlier).
TL;DR: What do I need to do (probably in get_courses.js) to update the Course Info tab instead of opening a new tab for each row click?

Answer 1

You can access tabs in TabGroup through tabs property. However, it would be easier to keep reference to tab which you created outside of event listener and modify inside:
var courseInfo_tab = null;
table.addEventListener("click",function(e){
var courseInfo_window = Titanium.UI.createWindow({
title:e.rowData.title,
url:'get_courseInfo.js',
courseIMISCode: e.rowData.courseIMISCode
});
if (courseInfo_tab === null) {
courseInfo_tab = Titanium.UI.createTab({
title:'Course Info',
window:courseInfo_window
});
Titanium.UI.currentTabGroup.addTab(courseInfo_tab);
} else {
courseInfo_tab.window = courseInfo_window;
}
});