Taowei David Wang added a comment - 01/Sep/17 11:50 AM Native looking checkbox images have been added for Linux. Code has been added to detect whether users are running the workbench on Linux and take the appropriate actions. This means the workbench will use these pre-rendered images for checkboxes instead of generating them on-the-fly, which causes the hanging. On Windows and Mac, the workbench still generate these images on-the-fly. A few other bugs are fixed along the way: 1. Black, non-interactive regions in Temporal Query Plugin have been fixed. 2. Black drop boxes on the Timeline have been fixed. 3. The color discrepancy in Temporal Query Plugin's GroupPanel instructions have been fixed. (now uniformly 'gray'). Code and resources have been checked in and this issue should be ready for testing.

Taowei David Wang added a comment - 31/Aug/17 3:56 PM Hanging is resolved. Modification to allow 'native-looking' check boxes is on-going. In the mean time, it is discovered that some components are completely black in Temporal Query Plugin. They have the right size, but look black, do not show any sub-components, also do not allow any interaction. After a day of tracking, the culprit seems to be the option SWT.CENTER, which is used to create some of the black components. By removing them, the appearance and behavior have returned to normal.

Taowei David Wang added a comment - 30/Aug/17 12:02 PM Temporal Query plugin uses a piece of code to mimic native OS's look and feel of check boxes. This piece of code was never tested on Linux, and apparently it causes hanging. I will remove this piece of code to ensure the proper operation of Temporal Query plugin. The side-effect will be that the check boxes will look 'java' instead of 'native.'