4.8.14.1. Application Folders

Creating application folders requires special permissions to create/edit application folders (cuba.gui.appFolder.global).

A simple application folder can be created via the folder panel context menu. Such folder will not be connected to the system screens and can be only used to group other folders within a folder tree.

A folder that opens a screen with a filter can be created as follows:

  • Open a screen and filter the records as necessary.

  • Select Save as application folder option in the Filter…​ button menu.

  • Fill in the folder attributes in the Add dialog:

    • Folder name.

    • Window title – a string to be added to the window title when opening it from the folder.

    • Parent folder – determines the location of the new folder in the folder tree.

    • Visibility script – a Groovy script defining folder visibility, executed at the start of user session.

      The script should return a Boolean. The folder is visible, if the script is not defined or returns true or null. Example of a Groovy script:

      userSession.currentOrSubstitutedUser.login == 'admin'

    • Count script – a Groovy script defining the record count and display style for a folder. Executed at the start of the user session and on timer.

      The script should return a numeric value, the integer part of which will be used as the record count value. If the script is not defined or returns null, the counter will not be displayed. In addition to the returned value, the script can also set the style variable, which will be used as folder display style. Example of a Groovy script:

      def em = persistence.getEntityManager()
def q = em.createQuery('select count(o) from sales$Order o')
def count = q.getSingleResult()

style = count > 0 ? 'emphasized' : null
return count

      In order for the style to be displayed, the application theme should contain this style for the v-tree-node element in cuba-folders-pane, for example:

      .cuba-folders-pane .v-tree-node.emphasized {
  font-weight: bold;
}

Scripts can use the following variables defined in the groovy.lang.Binding context:

  • folder – an instance of AppFolder entity for which the script is executed.

  • userSession – instance of UserSession for current user session.

  • persistence – implementation of the Persistence interface.

  • metadata – implementation of the Metadata interface.

The platform uses the same instance of groovy.lang.Binding for all scripts when the folders are being updated. So it is possible to pass variables between them in order to eliminate duplicate requests and increase performance.

Script sources can be stored within the attributes of the AppFolder entity or in separate files. In the latter case, the attribute should include a file path with a mandatory ".groovy" extension, as required by the Resources interface. If an attribute contains a string ending with ".groovy", the script will be loaded from the corresponding file; otherwise, the attribute content itself will be used as a script.

Application folders are instances of the AppFolder entity and are stored in the related SYS_FOLDER and SYS_APP_FOLDER tables.