[gnome-todo] Introduce GtdWorkspace

[Georges Basile Stavracas Neto <gbsneto src gnome org>]

commit 902485b41a7ba8a988201bb350cc9debcbce76c5
Author: Georges Basile Stavracas Neto <georges stavracas gmail com>
Date:   Mon Apr 27 01:24:05 2020 -0300

    Introduce GtdWorkspace
    
    A workspace is a container to a set of widgetries,
    and is in a higher level than panels. GNOME To Do
    will ship a default task list workspace, plugins
    will be able to add more with incoming GtdManager
    API.

 src/gtd-types.h                |  3 +-
 src/interfaces/gtd-workspace.c | 79 ++++++++++++++++++++++++++++++++++++++++++
 src/interfaces/gtd-workspace.h | 47 +++++++++++++++++++++++++
 src/meson.build                |  4 +++
 4 files changed, 132 insertions(+), 1 deletion(-)
---
diff --git a/src/gtd-types.h b/src/gtd-types.h
index 9d91b5e..47f441f 100644
--- a/src/gtd-types.h
+++ b/src/gtd-types.h
@@ -1,6 +1,6 @@
 /* gtd-types.h
  *
- * Copyright (C) 2015 Georges Basile Stavracas Neto <georges stavracas gmail com>
+ * Copyright (C) 2015-2020 Georges Basile Stavracas Neto <georges stavracas gmail com>
  *
  * 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
@@ -48,6 +48,7 @@ typedef struct _GtdTaskList             GtdTaskList;
 typedef struct _GtdTaskListItem         GtdTaskListItem;
 typedef struct _GtdTaskRow              GtdTaskRow;
 typedef struct _GtdWindow               GtdWindow;
+typedef struct _GtdWorkspace            GtdWorkspace;
 
 G_END_DECLS
 
diff --git a/src/interfaces/gtd-workspace.c b/src/interfaces/gtd-workspace.c
new file mode 100644
index 0000000..4d2a9a6
--- /dev/null
+++ b/src/interfaces/gtd-workspace.c
@@ -0,0 +1,79 @@
+/* gtd-workspace.c
+ *
+ * Copyright 2020 Georges Basile Stavracas Neto <georges stavracas gmail com>
+ *
+ * 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/>.
+ *
+ * SPDX-License-Identifier: GPL-3.0-or-later
+ */
+
+#include "gtd-workspace.h"
+
+G_DEFINE_INTERFACE (GtdWorkspace, gtd_workspace, G_TYPE_OBJECT)
+
+static void
+gtd_workspace_default_init (GtdWorkspaceInterface *iface)
+{
+}
+
+/**
+ * gtd_workspace_get_id:
+ * @self: a #GtdWorkspace
+ *
+ * Retrieves the id of @self.
+ *
+ * Returns: the id of @self
+ */
+const gchar*
+gtd_workspace_get_id (GtdWorkspace *self)
+{
+  g_return_val_if_fail (GTD_IS_WORKSPACE (self), NULL);
+  g_return_val_if_fail (GTD_WORKSPACE_GET_IFACE (self)->get_id, NULL);
+
+  return GTD_WORKSPACE_GET_IFACE (self)->get_id (self);
+}
+
+/**
+ * gtd_workspace_get_title:
+ * @self: a #GtdWorkspace
+ *
+ * Retrieves the title of @self.
+ *
+ * Returns: the title of @self
+ */
+const gchar*
+gtd_workspace_get_title (GtdWorkspace *self)
+{
+  g_return_val_if_fail (GTD_IS_WORKSPACE (self), NULL);
+  g_return_val_if_fail (GTD_WORKSPACE_GET_IFACE (self)->get_title, NULL);
+
+  return GTD_WORKSPACE_GET_IFACE (self)->get_title (self);
+}
+
+/**
+ * gtd_workspace_get_priority:
+ * @self: a #GtdWorkspace
+ *
+ * Retrieves the priority of @self.
+ *
+ * Returns: the priority of @self
+ */
+gint
+gtd_workspace_get_priority (GtdWorkspace *self)
+{
+  g_return_val_if_fail (GTD_IS_WORKSPACE (self), 0);
+  g_return_val_if_fail (GTD_WORKSPACE_GET_IFACE (self)->get_priority, 0);
+
+  return GTD_WORKSPACE_GET_IFACE (self)->get_priority (self);
+}
diff --git a/src/interfaces/gtd-workspace.h b/src/interfaces/gtd-workspace.h
new file mode 100644
index 0000000..119d5a4
--- /dev/null
+++ b/src/interfaces/gtd-workspace.h
@@ -0,0 +1,47 @@
+/* gtd-workspace.h
+ *
+ * Copyright 2020 Georges Basile Stavracas Neto <georges stavracas gmail com>
+ *
+ * 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/>.
+ *
+ * SPDX-License-Identifier: GPL-3.0-or-later
+ */
+
+#pragma once
+
+#include <gtk/gtk.h>
+
+G_BEGIN_DECLS
+
+#define GTD_TYPE_WORKSPACE (gtd_workspace_get_type ())
+G_DECLARE_INTERFACE (GtdWorkspace, gtd_workspace, GTD, WORKSPACE, GtkWidget)
+
+struct _GtdWorkspaceInterface
+{
+  GTypeInterface parent;
+
+  const gchar*       (*get_id)                                   (GtdWorkspace       *self);
+
+  const gchar*       (*get_title)                                (GtdWorkspace       *self);
+
+  gint               (*get_priority)                             (GtdWorkspace       *self);
+};
+
+const gchar*         gtd_workspace_get_id                        (GtdWorkspace       *self);
+
+const gchar*         gtd_workspace_get_title                     (GtdWorkspace       *self);
+
+gint                 gtd_workspace_get_priority                  (GtdWorkspace       *self);
+
+G_END_DECLS
diff --git a/src/meson.build b/src/meson.build
index 9b28171..80e1a1a 100644
--- a/src/meson.build
+++ b/src/meson.build
@@ -19,6 +19,7 @@ headers = enum_headers + files(
   'interfaces/gtd-activatable.h',
   'interfaces/gtd-panel.h',
   'interfaces/gtd-provider.h',
+  'interfaces/gtd-workspace.h',
   'models/gtd-list-model-filter.h',
   'models/gtd-list-store.h',
   'notification/gtd-notification.h',
@@ -46,6 +47,7 @@ sources = files(
   'interfaces/gtd-activatable.c',
   'interfaces/gtd-panel.c',
   'interfaces/gtd-provider.c',
+  'interfaces/gtd-workspace.c',
   'logging/gtd-log.c',
   'models/gtd-list-model-filter.c',
   'models/gtd-list-model-sort.c',
@@ -233,6 +235,8 @@ if get_option('introspection')
     'interfaces/gtd-panel.h',
     'interfaces/gtd-provider.c',
     'interfaces/gtd-provider.h',
+    'interfaces/gtd-workspace.c',
+    'interfaces/gtd-workspace.h',
     'models/gtd-list-model-filter.c',
     'models/gtd-list-model-filter.h',
     'models/gtd-list-store.c',