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/* -*- 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 "nsMai.h"
#include "nsAccessibilityService.h"
#include <gtk/gtk.h>
#include "atk/atkobject.h"
using namespace mozilla;
using namespace mozilla::a11y;
// ApplicationAccessibleWrap
ApplicationAccessibleWrap::ApplicationAccessibleWrap() = default;
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));
AtkRole role = atk_object_get_role(child);
// GTK native dialog
if (!IS_MAI_OBJECT(child) &&
(role == ATK_ROLE_DIALOG || role == ATK_ROLE_FILE_CHOOSER ||
role == ATK_ROLE_COLOR_CHOOSER || role == ATK_ROLE_FONT_CHOOSER)) {
if (data == reinterpret_cast<gpointer>(nsIAccessibleEvent::EVENT_SHOW)) {
// Attach the dialog accessible to app accessible tree
LocalAccessible* windowAcc =
GetAccService()->AddNativeRootAccessible(child);
g_object_set_qdata(G_OBJECT(child), sQuark_gecko_acc_obj,
reinterpret_cast<gpointer>(windowAcc));
} else {
// Deattach the dialog accessible
LocalAccessible* windowAcc = reinterpret_cast<LocalAccessible*>(
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) const {
// 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, static_cast<Accessible*>(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,
LocalAccessible* 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(LocalAccessible* 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);
}
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