We have not yet implemented multiple rows for document tabs. We do have a future feature request filed for it, so maybe someday. We also have a future feature request for vertical orientation with document tabs filed.
There are a few options which you might want to take advantage of to make the single row of tabs more compact and useful:
- Reduce the document tabs font size: Tools > Options... > Appearance > Fonts > Document Tabs
- Adjust the document tabs settings to make them as compact as possible (most of these suggestions are defaults). Tools > Options... > Editing > Editor Windows
- Show close button on Document tabs = OFF
- Document tab title = Name Only
- Abbreviate file tab captions = ON
- Hide known file extensions = ON
I believe that "Hide known file extensions" is off by default. It kind of runs counter to normal coder's instincts of wanting to see all the information, but if you are working in a Java project and nearly all the source files have the ".java" extension, is it really worth the space to have ".java" on every tab, you know what you are looking at without that. I use this setting, and frankly, I seldom even notice that the file extensions are missing anymore.
I tend to prefer to sort Document tabs alphabetically so that it is easy to scan for an item, but you may want to consider using one of the "Most recent" sort orders so that files in your working set stay visible on the document tabs.
This is my personal opinion here, but I'd like to hear yours. Why do you want multiple rows of document tabs? Obviously to see the names of all the files you have open. But does stacked tabs really give you the best presentation of a long list of open files? Generally, I find them to be unintuitive and a bit difficult to scan visually, which leaves me spending too much time hunting for the file I want.
Finally, would you be happy with a compromise where moving the mouse over a certain icon (=) would display an overlay with all the files in multiple rows of tabs. That way we do not consume extra space but you can see multiple rows when you want to. Or is it a requirement to be able to see everything you have open at once, even when you are not actively looking to switch documents?