Add a11y-settings plugin

1 files changed, 192 insertions, 0 deletions

diff --git a/plugins/a11y-settings/msd-a11y-settings-manager.c b/plugins/a11y-settings/msd-a11y-settings-manager.c
new file mode 100644
index 0000000..45469be
--- /dev/null
+++ b/plugins/a11y-settings/msd-a11y-settings-manager.c
@@ -0,0 +1,192 @@
+/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 8 -*-
+ *
+ * Copyright (C) 2007 William Jon McCann <[email protected]>
+ *
+ * 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 2 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, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ *
+ */
+
+#include "config.h"
+
+#include <sys/types.h>
+#include <sys/wait.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <unistd.h>
+#include <string.h>
+#include <errno.h>
+
+#include <locale.h>
+
+#include <glib.h>
+#include <glib/gi18n.h>
+#include <gdk/gdk.h>
+#include <gdk/gdkx.h>
+#include <gtk/gtk.h>
+
+#include "mate-settings-profile.h"
+#include "msd-a11y-settings-manager.h"
+
+#define MSD_A11Y_SETTINGS_MANAGER_GET_PRIVATE(o) (G_TYPE_INSTANCE_GET_PRIVATE ((o), MSD_TYPE_A11Y_SETTINGS_MANAGER, MsdA11ySettingsManagerPrivate))
+
+struct MsdA11ySettingsManagerPrivate
+{
+        GSettings *interface_settings;
+        GSettings *a11y_apps_settings;
+};
+
+enum {
+        PROP_0,
+};
+
+static void     msd_a11y_settings_manager_class_init  (MsdA11ySettingsManagerClass *klass);
+static void     msd_a11y_settings_manager_init        (MsdA11ySettingsManager      *a11y_settings_manager);
+static void     msd_a11y_settings_manager_finalize    (GObject                     *object);
+
+G_DEFINE_TYPE (MsdA11ySettingsManager, msd_a11y_settings_manager, G_TYPE_OBJECT)
+
+static gpointer manager_object = NULL;
+
+static void
+apps_settings_changed (GSettings              *settings,
+		       const char             *key,
+		       MsdA11ySettingsManager *manager)
+{
+	gboolean screen_reader, keyboard;
+
+	if (g_str_equal (key, "screen-reader-enabled") == FALSE &&
+	    g_str_equal (key, "screen-keyboard-enabled") == FALSE)
+		return;
+
+	g_debug ("screen reader or OSK enablement changed");
+
+	screen_reader = g_settings_get_boolean (manager->priv->a11y_apps_settings, "screen-reader-enabled");
+	keyboard = g_settings_get_boolean (manager->priv->a11y_apps_settings, "screen-keyboard-enabled");
+
+	if (screen_reader || keyboard) {
+		g_debug ("Enabling accessibility, screen reader or OSK enabled");
+		g_settings_set_boolean (manager->priv->interface_settings, "accessibility", TRUE);
+	} else if (screen_reader == FALSE && keyboard == FALSE) {
+		g_debug ("Disabling accessibility, screen reader and OSK disabled");
+		g_settings_set_boolean (manager->priv->interface_settings, "accessibility", FALSE);
+	}
+}
+
+gboolean
+msd_a11y_settings_manager_start (MsdA11ySettingsManager *manager,
+                                 GError                **error)
+{
+        g_debug ("Starting a11y_settings manager");
+        mate_settings_profile_start (NULL);
+
+	manager->priv->interface_settings = g_settings_new ("org.mate.interface");
+	manager->priv->a11y_apps_settings = g_settings_new ("org.mate.applications-at");
+
+	g_signal_connect (G_OBJECT (manager->priv->a11y_apps_settings), "changed",
+			  G_CALLBACK (apps_settings_changed), manager);
+
+	/* If any of the screen reader or on-screen keyboard are enabled,
+	 * make sure a11y is enabled for the toolkits.
+	 * We don't do the same thing for the reverse so it's possible to
+	 * enable AT-SPI for the toolkits without using an a11y app */
+	if (g_settings_get_boolean (manager->priv->a11y_apps_settings, "screen-keyboard-enabled") ||
+	    g_settings_get_boolean (manager->priv->a11y_apps_settings, "screen-reader-enabled"))
+		g_settings_set_boolean (manager->priv->interface_settings, "accessibility", TRUE);
+
+        mate_settings_profile_end (NULL);
+        return TRUE;
+}
+
+void
+msd_a11y_settings_manager_stop (MsdA11ySettingsManager *manager)
+{
+	if (manager->priv->interface_settings) {
+		g_object_unref (manager->priv->interface_settings);
+		manager->priv->interface_settings = NULL;
+	}
+	if (manager->priv->a11y_apps_settings) {
+		g_object_unref (manager->priv->a11y_apps_settings);
+		manager->priv->a11y_apps_settings = NULL;
+	}
+        g_debug ("Stopping a11y_settings manager");
+}
+
+static GObject *
+msd_a11y_settings_manager_constructor (GType                  type,
+                                       guint                  n_construct_properties,
+                                       GObjectConstructParam *construct_properties)
+{
+        MsdA11ySettingsManager      *a11y_settings_manager;
+
+        a11y_settings_manager = MSD_A11Y_SETTINGS_MANAGER (G_OBJECT_CLASS (msd_a11y_settings_manager_parent_class)->constructor (type,
+                                                                                                                                 n_construct_properties,
+                                                                                                                                 construct_properties));
+
+        return G_OBJECT (a11y_settings_manager);
+}
+
+static void
+msd_a11y_settings_manager_dispose (GObject *object)
+{
+        G_OBJECT_CLASS (msd_a11y_settings_manager_parent_class)->dispose (object);
+}
+
+static void
+msd_a11y_settings_manager_class_init (MsdA11ySettingsManagerClass *klass)
+{
+        GObjectClass   *object_class = G_OBJECT_CLASS (klass);
+
+        object_class->constructor = msd_a11y_settings_manager_constructor;
+        object_class->dispose = msd_a11y_settings_manager_dispose;
+        object_class->finalize = msd_a11y_settings_manager_finalize;
+
+        g_type_class_add_private (klass, sizeof (MsdA11ySettingsManagerPrivate));
+}
+
+static void
+msd_a11y_settings_manager_init (MsdA11ySettingsManager *manager)
+{
+        manager->priv = MSD_A11Y_SETTINGS_MANAGER_GET_PRIVATE (manager);
+
+}
+
+static void
+msd_a11y_settings_manager_finalize (GObject *object)
+{
+        MsdA11ySettingsManager *a11y_settings_manager;
+
+        g_return_if_fail (object != NULL);
+        g_return_if_fail (MSD_IS_A11Y_SETTINGS_MANAGER (object));
+
+        a11y_settings_manager = MSD_A11Y_SETTINGS_MANAGER (object);
+
+        g_return_if_fail (a11y_settings_manager->priv != NULL);
+
+        G_OBJECT_CLASS (msd_a11y_settings_manager_parent_class)->finalize (object);
+}
+
+MsdA11ySettingsManager *
+msd_a11y_settings_manager_new (void)
+{
+        if (manager_object != NULL) {
+                g_object_ref (manager_object);
+        } else {
+                manager_object = g_object_new (MSD_TYPE_A11Y_SETTINGS_MANAGER, NULL);
+                g_object_add_weak_pointer (manager_object,
+                                           (gpointer *) &manager_object);
+        }
+
+        return MSD_A11Y_SETTINGS_MANAGER (manager_object);
+}