[gnome-builder/wip/plugins: 15/36] workbench: add peas extension set for workbench

[Christian Hergert <chergert src gnome org>]

commit b3688ae106c743397a39273b9b7952819f549f5a
Author: Christian Hergert <christian hergert me>
Date:   Fri Jun 5 23:57:13 2015 -0700

    workbench: add peas extension set for workbench

 src/Makefile.am                      |    4 +-
 src/workbench/gb-workbench-addin.c   |   78 ++++++++++++++++++++++++++++++++++
 src/workbench/gb-workbench-addin.h   |   43 +++++++++++++++++++
 src/workbench/gb-workbench-private.h |    2 +
 src/workbench/gb-workbench.c         |   35 +++++++++++++++
 5 files changed, 161 insertions(+), 1 deletions(-)
---
diff --git a/src/Makefile.am b/src/Makefile.am
index 6b4b3e9..1f71f5e 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -161,10 +161,12 @@ libgnome_builder_la_SOURCES = \
        vim/gb-vim.h \
        workbench/gb-workbench-actions.c \
        workbench/gb-workbench-actions.h \
+       workbench/gb-workbench-addin.c \
+       workbench/gb-workbench-addin.h \
        workbench/gb-workbench-private.h \
+       workbench/gb-workbench-types.h \
        workbench/gb-workbench.c \
        workbench/gb-workbench.h \
-       workbench/gb-workbench-types.h \
        workspace/gb-workspace.c \
        workspace/gb-workspace.h \
        workspace/gb-workspace-pane.c \
diff --git a/src/workbench/gb-workbench-addin.c b/src/workbench/gb-workbench-addin.c
new file mode 100644
index 0000000..0baaa65
--- /dev/null
+++ b/src/workbench/gb-workbench-addin.c
@@ -0,0 +1,78 @@
+/* gb-workbench-addin.c
+ *
+ * Copyright (C) 2015 Christian Hergert <christian hergert me>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <glib/gi18n.h>
+
+#include "gb-workbench.h"
+#include "gb-workbench-addin.h"
+
+G_DEFINE_INTERFACE (GbWorkbenchAddin, gb_workbench_addin, G_TYPE_OBJECT)
+
+enum {
+  PROP_0,
+  PROP_WORKBENCH,
+  LAST_PROP
+};
+
+enum {
+  LOAD,
+  UNLOAD,
+  LAST_SIGNAL
+};
+
+static GParamSpec *gParamSpecs [LAST_PROP];
+static guint gSignals [LAST_SIGNAL];
+
+static void
+gb_workbench_addin_default_init (GbWorkbenchAddinInterface *iface)
+{
+  gParamSpecs [PROP_WORKBENCH] =
+    g_param_spec_object ("workbench",
+                         _("Workbench"),
+                         _("The workbench window."),
+                         GB_TYPE_WORKBENCH,
+                         (G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
+  g_object_interface_install_property (iface, gParamSpecs [PROP_WORKBENCH]);
+
+  gSignals [LOAD] = g_signal_new ("load",
+                                  G_TYPE_FROM_INTERFACE (iface),
+                                  G_SIGNAL_RUN_LAST,
+                                  G_STRUCT_OFFSET (GbWorkbenchAddinInterface, load),
+                                  NULL, NULL, NULL, G_TYPE_NONE, 0);
+
+  gSignals [UNLOAD] = g_signal_new ("unload",
+                                    G_TYPE_FROM_INTERFACE (iface),
+                                    G_SIGNAL_RUN_LAST,
+                                    G_STRUCT_OFFSET (GbWorkbenchAddinInterface, unload),
+                                    NULL, NULL, NULL, G_TYPE_NONE, 0);
+}
+
+void
+gb_workbench_addin_load (GbWorkbenchAddin *self)
+{
+  g_return_if_fail (GB_IS_WORKBENCH_ADDIN (self));
+
+  g_signal_emit (self, gSignals [LOAD], 0);
+}
+void
+gb_workbench_addin_unload (GbWorkbenchAddin *self)
+{
+  g_return_if_fail (GB_IS_WORKBENCH_ADDIN (self));
+
+  g_signal_emit (self, gSignals [UNLOAD], 0);
+}
diff --git a/src/workbench/gb-workbench-addin.h b/src/workbench/gb-workbench-addin.h
new file mode 100644
index 0000000..63b0866
--- /dev/null
+++ b/src/workbench/gb-workbench-addin.h
@@ -0,0 +1,43 @@
+/* gb-workbench-addin.h
+ *
+ * Copyright (C) 2015 Christian Hergert <christian hergert me>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef GB_WORKBENCH_ADDIN_H
+#define GB_WORKBENCH_ADDIN_H
+
+#include <glib-object.h>
+
+G_BEGIN_DECLS
+
+#define GB_TYPE_WORKBENCH_ADDIN (gb_workbench_addin_get_type ())
+
+G_DECLARE_INTERFACE (GbWorkbenchAddin, gb_workbench_addin, GB, WORKBENCH_ADDIN, GObject)
+
+struct _GbWorkbenchAddinInterface
+{
+  GTypeInterface parent;
+
+  void (*load)   (GbWorkbenchAddin *self);
+  void (*unload) (GbWorkbenchAddin *self);
+};
+
+void gb_workbench_addin_load   (GbWorkbenchAddin *self);
+void gb_workbench_addin_unload (GbWorkbenchAddin *self);
+
+G_END_DECLS
+
+#endif /* GB_WORKBENCH_ADDIN_H */
diff --git a/src/workbench/gb-workbench-private.h b/src/workbench/gb-workbench-private.h
index 1786639..de83f43 100644
--- a/src/workbench/gb-workbench-private.h
+++ b/src/workbench/gb-workbench-private.h
@@ -20,6 +20,7 @@
 #define GB_WORKBENCH_PRIVATE_H
 
 #include <gtk/gtk.h>
+#include <libpeas/peas.h>
 #include <ide.h>
 
 #include "gb-command-bar.h"
@@ -42,6 +43,7 @@ struct _GbWorkbench
   IdeContext             *context;
   GCancellable           *unload_cancellable;
   gchar                  *current_folder_uri;
+  PeasExtensionSet       *extensions;
 
   /* Template references */
   GbCommandBar           *command_bar;
diff --git a/src/workbench/gb-workbench.c b/src/workbench/gb-workbench.c
index 5a1f811..50165b2 100644
--- a/src/workbench/gb-workbench.c
+++ b/src/workbench/gb-workbench.c
@@ -30,6 +30,7 @@
 #include "gb-workbench-actions.h"
 #include "gb-workbench-private.h"
 #include "gb-workbench.h"
+#include "gb-workbench-addin.h"
 #include "gb-workspace.h"
 #include "gb-workspace-pane.h"
 #include "gb-project-tree.h"
@@ -566,8 +567,25 @@ gb_workbench_class_init (GbWorkbenchClass *klass)
 }
 
 static void
+gb_workbench__extension_added (PeasExtensionSet *set,
+                               PeasPluginInfo   *plugin_info,
+                               GbWorkbenchAddin *addin)
+{
+  gb_workbench_addin_load (addin);
+}
+
+static void
+gb_workbench__extension_removed (PeasExtensionSet *set,
+                                 PeasPluginInfo   *plugin_info,
+                                 GbWorkbenchAddin *addin)
+{
+  gb_workbench_addin_unload (addin);
+}
+
+static void
 gb_workbench_init (GbWorkbench *self)
 {
+  PeasEngine *engine;
   g_autoptr(GbCommandProvider) gaction_provider = NULL;
   g_autoptr(GbCommandProvider) vim_provider = NULL;
 
@@ -593,6 +611,23 @@ gb_workbench_init (GbWorkbench *self)
 
   gb_settings_init_window (GTK_WINDOW (self));
 
+  engine = peas_engine_get_default ();
+  self->extensions = peas_extension_set_new (engine,
+                                             GB_TYPE_WORKBENCH_ADDIN,
+                                             "workbench", self,
+                                             NULL);
+  peas_extension_set_foreach (self->extensions,
+                              (PeasExtensionSetForeachFunc)gb_workbench__extension_added,
+                              NULL);
+  g_signal_connect (self->extensions,
+                    "extension-added",
+                    G_CALLBACK (gb_workbench__extension_added),
+                    self);
+  g_signal_connect (self->extensions,
+                    "extension-removed",
+                    G_CALLBACK (gb_workbench__extension_removed),
+                    self);
+
   IDE_EXIT;
 }