[gtk/ebassi/for-master: 2/14] a11y: Implement missing atspi.Component getters

[Emmanuele Bassi <ebassi src gnome org>]

commit 3b2cd972d5ae60f93b5aa1a97bd0c9dab7dd60cb
Author: Emmanuele Bassi <ebassi gnome org>
Date:   Wed Nov 11 17:43:44 2020 +0000

    a11y: Implement missing atspi.Component getters
    
    Some of them are entirely innocuous, and we can easily provide values
    that match what GTK3 provides.

 gtk/a11y/gtkatspicomponent.c | 19 ++++++++++++++++---
 gtk/a11y/gtkatspiprivate.h   | 12 ++++++++++++
 2 files changed, 28 insertions(+), 3 deletions(-)
---
diff --git a/gtk/a11y/gtkatspicomponent.c b/gtk/a11y/gtkatspicomponent.c
index 2ab1ffc81c..7da968d1d1 100644
--- a/gtk/a11y/gtkatspicomponent.c
+++ b/gtk/a11y/gtkatspicomponent.c
@@ -26,7 +26,9 @@
 #include "gtkatspiprivate.h"
 #include "gtkatspiutilsprivate.h"
 #include "gtkaccessibleprivate.h"
+#include "gtkpopover.h"
 #include "gtkwidget.h"
+#include "gtkwindow.h"
 
 #include "a11y/atspi/atspi-component.h"
 
@@ -194,11 +196,20 @@ component_handle_method (GDBusConnection       *connection,
     }
   else if (g_strcmp0 (method_name, "GetLayer") == 0)
     {
-      g_dbus_method_invocation_return_error_literal (invocation, G_DBUS_ERROR, G_DBUS_ERROR_NOT_SUPPORTED, 
"");
+      AtspiComponentLayer layer;
+
+      if (GTK_IS_WINDOW (widget))
+        layer = ATSPI_COMPONENT_LAYER_WINDOW;
+      else if (GTK_IS_POPOVER (widget))
+        layer = ATSPI_COMPONENT_LAYER_POPUP;
+      else
+        layer = ATSPI_COMPONENT_LAYER_WIDGET;
+
+      g_dbus_method_invocation_return_value (invocation, g_variant_new ("(u)", layer));
     }
   else if (g_strcmp0 (method_name, "GetMDIZOrder") == 0)
     {
-      g_dbus_method_invocation_return_error_literal (invocation, G_DBUS_ERROR, G_DBUS_ERROR_NOT_SUPPORTED, 
"");
+      g_dbus_method_invocation_return_value (invocation, g_variant_new ("(n)", 0));
     }
   else if (g_strcmp0 (method_name, "GrabFocus") == 0)
     {
@@ -206,7 +217,9 @@ component_handle_method (GDBusConnection       *connection,
     }
   else if (g_strcmp0 (method_name, "GetAlpha") == 0)
     {
-      g_dbus_method_invocation_return_error_literal (invocation, G_DBUS_ERROR, G_DBUS_ERROR_NOT_SUPPORTED, 
"");
+      double opacity = gtk_widget_get_opacity (widget);
+
+      g_dbus_method_invocation_return_value (invocation, g_variant_new ("(d)", opacity));
     }
   else if (g_strcmp0 (method_name, "SetExtents") == 0)
     {
diff --git a/gtk/a11y/gtkatspiprivate.h b/gtk/a11y/gtkatspiprivate.h
index 9d3d316354..036a41ef27 100644
--- a/gtk/a11y/gtkatspiprivate.h
+++ b/gtk/a11y/gtkatspiprivate.h
@@ -252,4 +252,16 @@ typedef enum {
   ATSPI_COORD_TYPE_PARENT,
 } AtspiCoordType;
 
+typedef enum {
+  ATSPI_COMPONENT_LAYER_INVALID,
+  ATSPI_COMPONENT_LAYER_BACKGROUND,
+  ATSPI_COMPONENT_LAYER_CANVAS,
+  ATSPI_COMPONENT_LAYER_WIDGET,
+  ATSPI_COMPONENT_LAYER_MDI,
+  ATSPI_COMPONENT_LAYER_POPUP,
+  ATSPI_COMPONENT_LAYER_OVERLAY,
+  ATSPI_COMPONENT_LAYER_WINDOW
+} AtspiComponentLayer;
+
+
 G_END_DECLS