====== Eclipse ======

This example touches only the basics.
Some of our colleagues managed to integrate Eclipse with the ATLAS TDAQ environment: [[https://twiki.cern.ch/twiki/bin/view/Sandbox/TdaqSwEclipse]]

===== Install Java and Eclipse =====

  - If you do not have Java, please download and install it. Eclipse needs it.
  - Download "Eclipse IDE for C/C++ Developers" from http://www.eclipse.org/downloads/
  - Extract folder "eclipse" to a location where you want to store the executable.  E.G. C:\Program Files\
  - Enter the folder and execute "eclipse". It will ask you for location of the workspace. That's where the source code is stored.

<note tip>For ANL, eclipse is installed in /share/sl6/eclipse/ directory.</note>

===== Install SVN plugins =====

  - Run Eclipse and select Help > Install New Software... from the main menu.
  - Enter "http://download.eclipse.org/releases/juno" in "work with" and click "Add..."
  - Select "Collaboration -> Subversive SVN team provider" and install it.
  - Restart Eclipse
  - Select Help -> Install New Software... from the main menu.
  - Enter [[http://community.polarion.com/projects/subversive/download/eclipse/4.0/luna-site/]] in "work with" and click "Add..."
  - Select "Subversive SVN Connectors" and "SVN Kit" and install them.
  - Restart Eclipse.

===== Access CERN SVN =====

  - Window -> Open perspective -> SVN Repository Exploring
  - Add New Repository Location. Enter [[svn+ssh://svn.cern.ch/reps/atlasoff]]
  - Use your CERN username and password.
  - You can also do that to your private SVN repository.
  - Select AnalysisSUSY -> trunk -> packages.rc
  - Right click on the file and select "Show history"
  - Compare tag 620896 to the previous revision.
  - Now you can see what has changed. When the change was made. Who did that. The comments are also displayed.


===== Import a package from SVN =====

  - Return to "C/C++ Perspective": click the icon in the upper-right corner of the window.
  - Right-click on "Project Explorer" and click "import".
  - Select "SVN" -> "Project from SVN". "Next" -> "Browse".
  - Navigate to PhysicsAnalysis -> SYSYPhys -> SUSYTools -> tags -> SUSYTools-00-05-00-13
  - Select "Check out as a project with the name specified:". The project will appear in the Project Explorer.
  - Go to src --> SUSYToolsAlg.cxx and double-click on the file.
  - Right-click on the project name. Select "New -> Covert to a C/C++ Project".
  - Select "C Project. Uncheck "Specify project type".
  - Now the syntax checking, indexing, and autocomplete are enabled.

===== Edit the code  =====

  - Press Shift+Ctrl+F
  - It will auto-alight the code.
  - Go to line 128 and type "jets_" and press "Ctrl+Space". The auto-coplete will finish the name.
  - Delete "jets_shallowCopy" and enter ";" instead.
  - Let's commit that into the SVN repository.
  - Right-click on SUSYToolsAlg.cxx and select "Team -> Commit...".
  - Select "Yes." Enter your comment and click "OK".
  - Ops.. we do not have permissions to do that.  
  - Well, that is how you synchronize your code with a repository.
  - Right-click on SUSYToolsAlg.cxx and select "Team -> Revert". The file is returned to the original state.

===== Add libraries  =====

  - You may want to keep your code aware of external libraries (e.g. ROOT).