1Gtk2::Ex::FormFactory::UPsreorxyC(o3n)tributed Perl DocuGmtekn2t:a:tEixo:n:FormFactory::Proxy(3)
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6 Gtk2::Ex::FormFactory::Proxy - Proxy class for application objects
7
9 #-- Proxies are always created through
10 #-- Gtk2::Ex::FormFactory::Context, never
11 #-- directly by the application.
12 Gtk2::Ex::FormFactory::Proxy->new (
14 context => Gtk2::Ex::FormFactory::Context,
15 object => Object instance or CODEREF,
16 name => Name of this proxy,
17 set_prefix => Method prefix for write accessors,
18 get_prefix => Method prefix for read accessors,
19 attr_accessors_href => Hashref with accessor callbacks,
20 attr_activity_href => Hashref with activity callbacks,
21 aggregated_by => Fully qualified attribute of the parent,
22 changes_attr_filter => Regex for attributes which should not trigger
23 the object's 'changed' status
24 );
25
27 This class implements a generic proxy mechanism for accessing
28 application objects and their attributes. It defines attributes of the
29 associated object are accessed. You never instantiate objects of this
30 class by yourself; they're created internally by
31 Gtk2::Ex::FormFactory::Context when adding objects with the
32 Context->add_object() method.
33 But you may use the proxy objects e.g. for updates which affect the
35 application object and the GUI as well.
36 You can receive Proxy objects using the
38 Gtk2::Ex::FormFactory::Context->get_proxy() method.
39
41 Gtk2::Ex::FormFactory::Proxy
42
44 Attributes are handled through the common get_ATTR(), set_ATTR() style
45 accessors.
46 context = Gtk2::Ex::FormFactory::Context [mandatory]
48 The Context this proxy belongs to.
49 object = Object instance | CODEREF
51 The application object itself or a code reference, which returns
52 the object instance.
53 name = SCALAR [mandatory]
55 The Context wide unique name of this Proxy.
56 set_prefix = SCALAR [optional]
58 This is the method prefix for write accessors. Defaults to set_.
59 get_prefix = SCALAR [optional]
61 This is the method prefix for read accessors. Defaults to get_.
62 attr_accessors_href = HASHREF [optional]
64 With this hash you can override specific accessors with a code
65 reference, which is called instead of the object's own accessor.
66 Refer to Gtk2::Ex::FormFactory::Context->add_object for details.
68 attr_activity_href = HASHREF [optional]
70 This hash defines callbacks for attributes which return the
71 activity state of the corresonding attribute.
72 Refer to Gtk2::Ex::FormFactory::Context->add_object for details.
74 aggregated_by = "object.attr" [optional]
76 Fully qualified attribute of the parent aggregating this object
77 Refer to Gtk2::Ex::FormFactory::Context->add_object for details.
79 changes_attr_filter = REGEX [optional]
81 Refer to Gtk2::Ex::FormFactory::Context->add_object for details.
82 object_changed = BOOLEAN
84 This flag indicates whether the object represented by this Proxy
85 was changed. You may set this attribute to reset the object's
86 changed state.
87
89 $app_object = $proxy->get_object ()
90 This returns the actual application object of this Proxy, either
91 the statical assigned instance or a dynamicly retrieved instance.
92 $proxy->set_object ($object)
94 Changes the application object instance in this Proxy. All
95 dependend Widgets on the GUI are updated accordingly.
96 $app_object_attr_value = $proxy->get_attr ($attr)
98 Returns the application object's attribute $attr of this Proxy.
99 If $attr has the form "object.attr" the attribute of the
101 correspondent object is retreived, instead of the object associated
102 with this proxy.
103 $proxy->set_attr ($attr => $value)
105 Changes the application object's attribute $attr to $value and
106 updates all dependend Widgets on the GUI accordingly.
107 If $attr has the form "object.attr" the correspondent object will
109 be updated, instead of the object associated with this proxy.
110 $proxy->set_attrs ( { $attr => $value, ... } )
112 Changes a bunch of application object's attributes, which is passed
113 as a hash reference with $attr => $value pairs and updates all
114 dependend Widgets on the GUI accordingly.
115 $activity = $proxy->get_attr_activity ($attr)
117 Returns the current activity state of $attr.
118
122 Jörn Reder <joern at zyn dot de>
123
125 Copyright 2004-2006 by Jörn Reder.
126 This library is free software; you can redistribute it and/or modify it
128 under the terms of the GNU Library General Public License as published
129 by the Free Software Foundation; either version 2.1 of the License, or
130 (at your option) any later version.
131 This library is distributed in the hope that it will be useful, but
133 WITHOUT ANY WARRANTY; without even the implied warranty of
134 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
135 Library General Public License for more details.
136 You should have received a copy of the GNU Library General Public
138 License along with this library; if not, write to the Free Software
139 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307
140 USA.
141
143 Hey! The above document had some coding errors, which are explained
144 below:
145 Around line 470:
147 Expected text after =item, not a bullet
148 Around line 476:
150 Non-ASCII character seen before =encoding in 'Jörn'. Assuming UTF-8
151perl v5.36.0 2023-01-20 Gtk2::Ex::FormFactory::Proxy(3)