As a user I want to define custom commands that get multiple selected resources as a list or as indexed parameters

[basti1302]

Normally, if multiple resources are selected in a resource view like package explorer, and the user executes a custom command on this selection, the command is executed on each of the resources separately. Thus, if 3 files are selected, the command is simply executed 3 times and each execution gets one of the files as a parameter. For most commands this is just fine.

For some commands however, it would be nice to be able to pass all selected resources as a parameter list to one execution. Then the command would be executed just once but gets all three files as a parameter.

To support this feature, StartExplorer should provide a few new variables:

• ${resource_path_list:arg} :The paths of all selected resources, delimited by arg. If no argument is provided, a comma or the platform specific path separator is used
• Variables of the same fashion for resource_parent, resource_name, resource_name_without_extension and resource_extension, that is, ${resource_parent_list:arg}, ${resource_name_list:arg}, ${resource_name_without_extension_list:arg} and ${resource_extension_list:arg}
• ${resource_path_elem:arg} :The paths of the n-th resource, n is given by the numerical arg. If no argument is provided, the first resource is used
• Variables of the same fashion for resource_parent, resource_name, resource_name_without_extension and resource_extension, that is, ${resource_parent_elem:arg}, ${resource_name_elem:arg}, ${resource_name_without_extension_elem:arg} and ${resource_extension_elem:arg}.
• Maybe we can find something better than elem...
  Bring variable names in line with Eclipse variable naming schemes #17 and Variable replacement should always be handled by standard Eclipse mechanisms #18 should be done before this ticket