How to remove the close (×) button from Eclipse Juno tabs?

Question

Is it possible to remove the close button from main editor tabs? I've heard there is a new UI model in Eclipse Juno (e4) that uses CSS for tuning, so is it possible to write some CSS to remove close button from the tabs?

I didn't found anything useful regarding available css rules and selector for the new UI.

Answer 1

Just found a solution:

1. First you need to install E4 tools (from update site http://download.eclipse.org/e4/updates/0.12/): Er CSS Editor (Incubation) and restart Eclipse
2. Now go to Preferences (menu Window → Preferences, then Appearance), there you should find CSS editor for Eclipse UI

3. Add the following piece of code at the end of CSS code:

   CTabItem {
       swt-show-close: false !important;   
   }
   

4. Restart eclipse.

Answer 2

In addition to Sergey,

You don't have to install any plugin to actually edit the CSS file. If you goto

(eclipse-folder)/plugins/org.eclipse.platform_4.2.***/css/e4_default_gtk.css

and edit this file you will get the same result.

CTabItem {
    swt-show-close: false !important;   
}