import FIREFOX_52_6_0esr_RELEASE from mozilla-esr52 hg repo

accessible/atk/ApplicationAccessibleWrap.cpp

@@ -0,0 +1,167 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "ApplicationAccessibleWrap.h"
+
+#include "nsCOMPtr.h"
+#include "nsMai.h"
+#include "nsAccessibilityService.h"
+
+#include <gtk/gtk.h>
+#include <atk/atk.h>
+
+using namespace mozilla;
+using namespace mozilla::a11y;
+
+
+// ApplicationAccessibleWrap
+
+ApplicationAccessibleWrap::ApplicationAccessibleWrap():
+  ApplicationAccessible()
+{
+}
+
+ApplicationAccessibleWrap::~ApplicationAccessibleWrap()
+{
+  AccessibleWrap::ShutdownAtkObject();
+}
+
+gboolean
+toplevel_event_watcher(GSignalInvocationHint* ihint,
+                       guint                  n_param_values,
+                       const GValue*          param_values,
+                       gpointer               data)
+{
+  static GQuark sQuark_gecko_acc_obj = 0;
+
+  if (!sQuark_gecko_acc_obj)
+    sQuark_gecko_acc_obj = g_quark_from_static_string("GeckoAccObj");
+
+  if (nsAccessibilityService::IsShutdown())
+    return TRUE;
+
+  GObject* object = reinterpret_cast<GObject*>(g_value_get_object(param_values));
+  if (!GTK_IS_WINDOW(object))
+    return TRUE;
+
+  AtkObject* child = gtk_widget_get_accessible(GTK_WIDGET(object));
+
+  // GTK native dialog
+  if (!IS_MAI_OBJECT(child) &&
+      (atk_object_get_role(child) == ATK_ROLE_DIALOG)) {
+
+    if (data == reinterpret_cast<gpointer>(nsIAccessibleEvent::EVENT_SHOW)) {
+
+      // Attach the dialog accessible to app accessible tree
+      Accessible* windowAcc = GetAccService()->AddNativeRootAccessible(child);
+      g_object_set_qdata(G_OBJECT(child), sQuark_gecko_acc_obj,
+                         reinterpret_cast<gpointer>(windowAcc));
+
+    } else {
+
+      // Deattach the dialog accessible
+      Accessible* windowAcc =
+        reinterpret_cast<Accessible*>
+                        (g_object_get_qdata(G_OBJECT(child), sQuark_gecko_acc_obj));
+      if (windowAcc) {
+        GetAccService()->RemoveNativeRootAccessible(windowAcc);
+        g_object_set_qdata(G_OBJECT(child), sQuark_gecko_acc_obj, nullptr);
+      }
+
+    }
+  }
+
+  return TRUE;
+}
+
+ENameValueFlag
+ApplicationAccessibleWrap::Name(nsString& aName)
+{
+  // ATK doesn't provide a way to obtain an application name (for example,
+  // Firefox or Thunderbird) like IA2 does. Thus let's return an application
+  // name as accessible name that was used to get a branding name (for example,
+  // Minefield aka nightly Firefox or Daily aka nightly Thunderbird).
+  AppName(aName);
+  return eNameOK;
+}
+
+void
+ApplicationAccessibleWrap::GetNativeInterface(void** aOutAccessible)
+{
+  *aOutAccessible = nullptr;
+
+  if (!mAtkObject) {
+    mAtkObject =
+      reinterpret_cast<AtkObject*>(g_object_new(MAI_TYPE_ATK_OBJECT, nullptr));
+    if (!mAtkObject)
+      return;
+
+    atk_object_initialize(mAtkObject, this);
+    mAtkObject->role = ATK_ROLE_INVALID;
+    mAtkObject->layer = ATK_LAYER_INVALID;
+  }
+
+  *aOutAccessible = mAtkObject;
+}
+
+struct AtkRootAccessibleAddedEvent {
+  AtkObject *app_accessible;
+  AtkObject *root_accessible;
+  uint32_t index;
+};
+
+gboolean fireRootAccessibleAddedCB(gpointer data)
+{
+    AtkRootAccessibleAddedEvent* eventData = (AtkRootAccessibleAddedEvent*)data;
+    g_signal_emit_by_name(eventData->app_accessible, "children_changed::add",
+                          eventData->index, eventData->root_accessible, nullptr);
+    g_object_unref(eventData->app_accessible);
+    g_object_unref(eventData->root_accessible);
+    free(data);
+
+    return FALSE;
+}
+
+bool
+ApplicationAccessibleWrap::InsertChildAt(uint32_t aIdx, Accessible* aChild)
+{
+  if (!ApplicationAccessible::InsertChildAt(aIdx, aChild))
+    return false;
+
+  AtkObject* atkAccessible = AccessibleWrap::GetAtkObject(aChild);
+  atk_object_set_parent(atkAccessible, mAtkObject);
+
+    uint32_t count = mChildren.Length();
+
+    // Emit children_changed::add in a timeout
+    // to make sure aRootAccWrap is fully initialized.
+    AtkRootAccessibleAddedEvent* eventData = (AtkRootAccessibleAddedEvent*)
+      malloc(sizeof(AtkRootAccessibleAddedEvent));
+    if (eventData) {
+      eventData->app_accessible = mAtkObject;
+      eventData->root_accessible = atkAccessible;
+      eventData->index = count -1;
+      g_object_ref(mAtkObject);
+      g_object_ref(atkAccessible);
+      g_timeout_add(0, fireRootAccessibleAddedCB, eventData);
+    }
+
+    return true;
+}
+
+bool
+ApplicationAccessibleWrap::RemoveChild(Accessible* aChild)
+{
+  int32_t index = aChild->IndexInParent();
+
+  AtkObject* atkAccessible = AccessibleWrap::GetAtkObject(aChild);
+  atk_object_set_parent(atkAccessible, nullptr);
+  g_signal_emit_by_name(mAtkObject, "children_changed::remove", index,
+                        atkAccessible, nullptr);
+
+  return ApplicationAccessible::RemoveChild(aChild);
+}
+