Convert GailPaned to GtkPanedAccessible

1 files changed, 158 insertions, 0 deletions

diff --git a/gtk/a11y/gtkpanedaccessible.c b/gtk/a11y/gtkpanedaccessible.c
new file mode 100644
index 0000000000..939087021c
--- /dev/null
+++ b/gtk/a11y/gtkpanedaccessible.c
@@ -0,0 +1,158 @@
+/* GAIL - The GNOME Accessibility Enabling Library
+ * Copyright 2001, 2002, 2003 Sun Microsystems Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+#include "config.h"
+
+#include <string.h>
+#include <gtk/gtk.h>
+#include "gtkpanedaccessible.h"
+
+static void atk_value_interface_init (AtkValueIface *iface);
+
+G_DEFINE_TYPE_WITH_CODE (GtkPanedAccessible, gtk_paned_accessible, GAIL_TYPE_CONTAINER,
+                         G_IMPLEMENT_INTERFACE (ATK_TYPE_VALUE, atk_value_interface_init))
+
+static void
+gtk_paned_accessible_size_allocate_gtk (GtkWidget     *widget,
+                                        GtkAllocation *allocation)
+{
+  AtkObject *obj = gtk_widget_get_accessible (widget);
+
+  g_object_notify (G_OBJECT (obj), "accessible-value");
+}
+
+static void
+gtk_paned_accessible_initialize (AtkObject *obj,
+                                 gpointer   data)
+{
+  ATK_OBJECT_CLASS (gtk_paned_accessible_parent_class)->initialize (obj, data);
+
+  g_signal_connect (data,
+                    "size_allocate",
+                    G_CALLBACK (gtk_paned_accessible_size_allocate_gtk),
+                    NULL);
+
+  obj->role = ATK_ROLE_SPLIT_PANE;
+}
+
+static void
+gtk_paned_accessible_class_init (GtkPanedAccessibleClass *klass)
+{
+  AtkObjectClass *class = ATK_OBJECT_CLASS (klass);
+
+  class->initialize = gtk_paned_accessible_initialize;
+}
+
+static void
+gtk_paned_accessible_init (GtkPanedAccessible *paned)
+{
+}
+
+static void
+gtk_paned_accessible_get_current_value (AtkValue *obj,
+                                        GValue   *value)
+{
+  GtkWidget* widget;
+  gint current_value;
+
+  widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (obj));
+  if (widget == NULL)
+    return;
+
+  current_value = gtk_paned_get_position (GTK_PANED (widget));
+  memset (value,  0, sizeof (GValue));
+  g_value_init (value, G_TYPE_INT);
+  g_value_set_int (value,current_value);
+}
+
+static void
+gtk_paned_accessible_get_maximum_value (AtkValue *obj,
+                                        GValue   *value)
+{
+  GtkWidget* widget;
+  gint maximum_value;
+
+  widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (obj));
+  if (widget == NULL)
+    return;
+
+  g_object_get (GTK_PANED (widget),
+                "max-position", &maximum_value,
+                NULL);
+  memset (value,  0, sizeof (GValue));
+  g_value_init (value, G_TYPE_INT);
+  g_value_set_int (value, maximum_value);
+}
+
+static void
+gtk_paned_accessible_get_minimum_value (AtkValue *obj,
+                                        GValue   *value)
+{
+  GtkWidget* widget;
+  gint minimum_value;
+
+  widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (obj));
+  if (widget == NULL)
+    return;
+
+  g_object_get (GTK_PANED (widget),
+                "min-position", &minimum_value,
+                NULL);
+  memset (value,  0, sizeof (GValue));
+  g_value_init (value, G_TYPE_INT);
+  g_value_set_int (value, minimum_value);
+}
+
+/*
+ * Calling atk_value_set_current_value() is no guarantee that the value
+ * is acceptable; it is necessary to listen for accessible-value signals
+ * and check whether the current value has been changed or check what the
+ * maximum and minimum values are.
+ */
+
+static gboolean
+gtk_paned_accessible_set_current_value (AtkValue     *obj,
+                                        const GValue *value)
+{
+  GtkWidget* widget;
+  gint new_value;
+
+  widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (obj));
+  if (widget == NULL)
+    return FALSE;
+
+  if (G_VALUE_HOLDS_INT (value))
+    {
+      new_value = g_value_get_int (value);
+      gtk_paned_set_position (GTK_PANED (widget), new_value);
+
+      return TRUE;
+    }
+  else
+    return FALSE;
+}
+
+static void
+atk_value_interface_init (AtkValueIface *iface)
+{
+  iface->get_current_value = gtk_paned_accessible_get_current_value;
+  iface->get_maximum_value = gtk_paned_accessible_get_maximum_value;
+  iface->get_minimum_value = gtk_paned_accessible_get_minimum_value;
+  iface->set_current_value = gtk_paned_accessible_set_current_value;
+}