[[File:UI_EventTracer.png|thumb|220px|Event Tracer]]
The Event Tracer is meant for the Studio user to monitor events happening in the system environment of {{UBIK}}. It is used to visualize events immediately in Studio while they are written by the logging mechanism in the background. This gives the Studio user the possibility to watch events as they happen in the system without the need to open the log files. These events can be errors and warnings but can also be messages that are for example generated out of the customizing code for debugging.
==Message Types==
{{UBIK}} Event Tracer is able to show the following event types:
* Errors: events the user should pay high attention to because the system is in a vulnerable state (marked with red error symbol).
* Warnings: events that have to be investigated because they are potentially important to the productive use of the system (marked with yellow warning symbol).
* Messages: events that support the user in debugging or finding problems in general (marked with blue message symbol).
===Logging list===
The list shows all events that happened since the start of the Studio session. Every entry has an information header shown in the list, consisting of the type and the time it happened as well as the time that elapsed since it happened, which is updated frequently. Every entry then can be expanded to show the full amount of infomation included in this event:
====Message Types====
{{UBIK}} Event Tracer is able to show the following event types:
{| class="wikitable" | width = "50%"
|-
! Message type !! Content
|- align="left"
| Error || events the user should pay high attention to because the system is in a vulnerable state (marked with red error symbol); if the error message also provides a stack trace, the stacktrace will be shown on the right of the list box
|- align="left"
| Warning|| events that have to be investigated because they are potentially important to the productive use of the system (marked with yellow warning symbol)
|- align="left"
| Message|| events that support the user in debugging or finding problems in general (marked with blue message symbol)
|}
==Toolbar==
|- align="left"
| Sort by time stamp || this will sort the entries by the time stamp; clicking this repeatedly will change the direction of the sorting between ascending and descending time stamp
|- align="left"
|- align="left"
| Sort by category || this will sort the entries by the level of importance; clicking this repeatedly will change the direction of the sorting between important messages shown on top or at the bottom of the list
| Clear all items|| Clears the event list
|}
==Status bar==
The Event Tracer features a status bar at the bottom showing the fololwing information:
* number of each event type; clicking these items will also hide or show the respective type of events int the list.
* last event including time stamp; clicking on this item will automatically show and select the item in the events list.
==Context Menu==
|-
! Item !! Purpose
|- align="left"
| Copy to Clipboard || this will copy the content of the currently selected event(s)
|- align="left"