The Tor Browser: accessible/src/atk/ApplicationAccessibleWrap.cpp@b8a032363ba2 (annotated)

accessible/src/atk/ApplicationAccessibleWrap.cpp@b8a032363ba2 (annotated)

accessible/src/atk/ApplicationAccessibleWrap.cpp

Thu, 22 Jan 2015 13:21:57 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Thu, 22 Jan 2015 13:21:57 +0100
branch: TOR_BUG_9701
changeset 15: b8a032363ba2
permissions: -rw-r--r--

Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6

 /* -*- 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 "nsAutoPtr.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).
   GetAppName(aName);
   return eNameOK;
 }
 NS_IMETHODIMP
 ApplicationAccessibleWrap::GetNativeInterface(void** aOutAccessible)
 {
     *aOutAccessible = nullptr;
     if (!mAtkObject) {
         mAtkObject =
             reinterpret_cast<AtkObject *>
                             (g_object_new(MAI_TYPE_ATK_OBJECT, nullptr));
         NS_ENSURE_TRUE(mAtkObject, NS_ERROR_OUT_OF_MEMORY);
         atk_object_initialize(mAtkObject, this);
         mAtkObject->role = ATK_ROLE_INVALID;
         mAtkObject->layer = ATK_LAYER_INVALID;
     }
     *aOutAccessible = mAtkObject;
     return NS_OK;
 }
 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);
 }

The Tor Browser / annotate

accessible/src/atk/ApplicationAccessibleWrap.cpp@b8a032363ba2 (annotated)

accessible/src/atk/ApplicationAccessibleWrap.cpp