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