906f93a130
Introduce e_extensible_list_extensions(), which provides extensible
objects access to their own extensions, or a subset of them.
Convert EShellBackend to an abstract EExtension subtype. EShell will
load its extensions with e_extensible_load_extensions(), and then obtain
a list of EShellBackend extensions as follows:
shell_backends = e_extensible_list_extensions (
E_EXTENSIBLE (shell), E_TYPE_SHELL_BACKEND);
Because EShellBackend is abstract, its GType is skipped while traversing
the GType hierarchy to find EShell extensions.
60 lines
1.8 KiB
C
60 lines
1.8 KiB
C
/*
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* e-extensible.h
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) version 3.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with the program; if not, see <http://www.gnu.org/licenses/>
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*
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*/
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#ifndef E_EXTENSIBLE_H
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#define E_EXTENSIBLE_H
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#include <glib-object.h>
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/* Standard GObject macros */
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#define E_TYPE_EXTENSIBLE \
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(e_extensible_get_type ())
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#define E_EXTENSIBLE(obj) \
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(G_TYPE_CHECK_INSTANCE_CAST \
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((obj), E_TYPE_EXTENSIBLE, EExtensible))
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#define E_EXTENSIBLE_INTERFACE(cls) \
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(G_TYPE_CHECK_CLASS_CAST \
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((cls), E_TYPE_EXTENSIBLE, EExtensibleInterface))
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#define E_IS_EXTENSIBLE(obj) \
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(G_TYPE_CHECK_INSTANCE_TYPE \
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((obj), E_TYPE_EXTENSIBLE))
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#define E_IS_EXTENSIBLE_INTERFACE(cls) \
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(G_TYPE_CHECK_CLASS_TYPE \
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((cls), E_TYPE_EXTENSIBLE))
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#define E_EXTENSIBLE_GET_INTERFACE(obj) \
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(G_TYPE_INSTANCE_GET_INTERFACE \
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((obj), E_TYPE_EXTENSIBLE, EExtensibleInterface))
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G_BEGIN_DECLS
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typedef struct _EExtensible EExtensible;
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typedef struct _EExtensibleInterface EExtensibleInterface;
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struct _EExtensibleInterface {
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GTypeInterface parent_interface;
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};
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GType e_extensible_get_type (void);
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void e_extensible_load_extensions (EExtensible *extensible);
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GList * e_extensible_list_extensions (EExtensible *extensible,
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GType extension_type);
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G_END_DECLS
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#endif /* E_EXTENSIBLE_H */
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