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       Prima::VB::CfgMaint - maintains visual builder widget palette


       The module is used by the Visual Builder and "cfgmaint" programs, to
       maintain the Visual Builder widget palette. The installed widgets are
       displayed in main panel of the Visual Builder, and can be maintained by


       The Visual Builder widget palette configuration is contained in two
       files - the system-wide "Prima::VB::Config" and the user
       "~/.prima/vbconfig". The user config file take the precedence when
       loaded by the Visual Builder. The module can select either
       configuration by assigning $systemWide boolean property.

       The widgets are grouped in pages, which are accessible by names.

       New widgets can be added to the palette by calling "add_module" method,
       which accepts a perl module file as its first parameter. The module
       must conform to the VB-loadable format.


       This section describes format of a module with VB-loadable widgets.

       The module must define a package with same name as the module.  In the
       package, "class" sub must be declared, that returns an array or paired
       scalars, where each first item in a pair corresponds to the widget
       class and the second to a hash, that contains the class loading
       information, and must contain the following keys:

       class STRING
           Name of the VB-representation class, which represents the original
           widget class in the Visual Builder. This is usually a lightweight
           class, which does not contain all functionality of the original
           class, but is capable of visually reflecting changes to the class

       icon PATH
           Sets an image file, where the class icon is contained.  PATH
           provides an extended syntax for indicating a frame index, if the
           image file is multiframed: the frame index is appended to the path
           name with ":" character prefix, for example:

       module STRING
           Sets the module name, that contains "class".

       page STRING
           Sets the default palette page where the widget is to be put.  The
           current implementation of the Visual Builder provides four pages:
           "General,Additional,Sliders,Abstract". If the page is not present,
           new page is automatically created when the widget class is

       RTModule STRING
           Sets the module name, that contains the original class.

       The reader is urged to explore Prima::VB::examples::Widgety file, which
       contains an example class "Prima::SampleWidget", its VB-representation,
       and a property "lineRoundStyle" definition example.


       add_module FILE
           Reads FILE module and loads all VB-loadable widgets from it.

           Returns string declaration of all registered classes in format of
           "classes" registration procedure ( see "FORMAT" ).

           Loads class and pages information from either a system-wide or a
           user configuration file.  If succeeds, the information is stored in
           @pages and %classes variables ( the old information is lost ) and
           returns 1. If fails, returns 0 and string with the error
           explanation; @pages and %classes content is undefined.

           Returns array of page names

           Reads information from both system-wide and user configuration
           files, and merges the information. If succeeds, returns 1. If
           fails, returns 0 and string with the error explanation.

           Erases all information about pages and classes.

           Writes either the system-wide or the user configuration file.  If
           $backup flag is set to 1, the old file renamed with ".bak"
           extension.  If succeeds, returns 1. If fails, returns 0 and string
           with the error explanation.

FILES, "~/.prima/vbconfig".


       Dmitry Karasik, <>.


       VB, cfgmaint, Prima::VB::examples::Widgety.