NAME

Gtk2::Ex::FormFactory::Proxy - Proxy class for application objects

SYNOPSIS

  #-- Proxies are always created through
  #-- Gtk2::Ex::FormFactory::Context, never
  #-- directly by the application.

  Gtk2::Ex::FormFactory::Proxy->new (
    context              => Gtk2::Ex::FormFactory::Context,
    object               => Object instance or CODEREF,
    name                 => Name of this proxy,
    set_prefix           => Method prefix for write accessors,
    get_prefix           => Method prefix for read accessors,
    attr_accessors_href  => Hashref with accessor callbacks,
    attr_activity_href   => Hashref with activity callbacks,
    aggregated_by        => Fully qualified attribute of the parent,
    changes_attr_filter  => Regex for attributes which should not trigger
                            the object's 'changed' status
  );

DESCRIPTION

This class implements a generic proxy mechanism for accessing application objects and their attributes. It defines attributes of the associated object are accessed. You never instantiate objects of this class by yourself; they're created internally by Gtk2::Ex::FormFactory::Context when adding objects with the Context->add_object() method.

But you may use the proxy objects e.g. for updates which affect the application object and the GUI as well.

You can receive Proxy objects using the Gtk2::Ex::FormFactory::Context->get_proxy() method.

OBJECT HIERARCHY

  Gtk2::Ex::FormFactory::Proxy

ATTRIBUTES

Attributes are handled through the common get_ATTR(), set_ATTR() style accessors.

context = Gtk2::Ex::FormFactory::Context [mandatory]: The Context this proxy belongs to.
object = Object instance | CODEREF: The application object itself or a code reference, which returns the object instance.
name = SCALAR [mandatory]: The Context wide unique name of this Proxy.
set_prefix = SCALAR [optional]: This is the method prefix for write accessors. Defaults to set_.
get_prefix = SCALAR [optional]: This is the method prefix for read accessors. Defaults to get_.
attr_accessors_href = HASHREF [optional]: With this hash you can override specific accessors with a code reference, which is called instead of the object's own accessor.
Refer to Gtk2::Ex::FormFactory::Context->add_object for details.
attr_activity_href = HASHREF [optional]: This hash defines callbacks for attributes which return the activity state of the corresonding attribute.
Refer to Gtk2::Ex::FormFactory::Context->add_object for details.
aggregated_by = "object.attr" [optional]: Fully qualified attribute of the parent aggregating this object
Refer to Gtk2::Ex::FormFactory::Context->add_object for details.
changes_attr_filter = REGEX [optional]: Refer to Gtk2::Ex::FormFactory::Context->add_object for details.
object_changed = BOOLEAN: This flag indicates whether the object represented by this Proxy was changed. You may set this attribute to reset the object's changed state.

METHODS

$app_object = $proxy->get_object (): This returns the actual application object of this Proxy, either the statical assigned instance or a dynamicly retrieved instance.
$proxy->set_object ($object): Changes the application object instance in this Proxy. All dependend Widgets on the GUI are updated accordingly.
$app_object_attr_value = $proxy->get_attr ($attr): Returns the application object's attribute $attr of this Proxy.
If $attr has the form "object.attr" the attribute of the correspondent object is retreived, instead of the object associated with this proxy.
$proxy->set_attr ($attr => $value): Changes the application object's attribute $attr to $value and updates all dependend Widgets on the GUI accordingly.
If $attr has the form "object.attr" the correspondent object will be updated, instead of the object associated with this proxy.
$proxy->set_attrs ( { $attr => $value, ... } ): Changes a bunch of application object's attributes, which is passed as a hash reference with $attr => $value pairs and updates all dependend Widgets on the GUI accordingly.
$activity = $proxy->get_attr_activity ($attr): Returns the current activity state of $attr.

AUTHORS

 Jörn Reder <joern at zyn dot de>

COPYRIGHT AND LICENSE

This library is free software; you can redistribute it and/or modify it under the terms of the GNU Library General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version.

This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public License for more details.

You should have received a copy of the GNU Library General Public License along with this library; if not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307 USA.

POD ERRORS

Hey! The above document had some coding errors, which are explained below:

Around line 470:: Expected text after =item, not a bullet
Around line 476:: Non-ASCII character seen before =encoding in 'Jörn'. Assuming CP1252