Add Linux Accessibility Bridge

This is a plugin that bridges the QAccessible world
to AT-SPI 2 on Linux.

Change-Id: I7af22621ee6a3cefc723b137b7f227a611cf6641
Reviewed-by: Jan-Arve Sæther <jan-arve.saether@nokia.com>

1 files changed, 192 insertions, 0 deletions

diff --git a/src/platformsupport/linuxaccessibility/bridge.cpp b/src/platformsupport/linuxaccessibility/bridge.cpp
new file mode 100644
index 0000000000..c36f5a58c8
--- /dev/null
+++ b/src/platformsupport/linuxaccessibility/bridge.cpp
@@ -0,0 +1,192 @@
+/****************************************************************************
+**
+** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/
+**
+** This file is part of the QtGui module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** GNU Lesser General Public License Usage
+** This file may be used under the terms of the GNU Lesser General Public
+** License version 2.1 as published by the Free Software Foundation and
+** appearing in the file LICENSE.LGPL included in the packaging of this
+** file. Please review the following information to ensure the GNU Lesser
+** General Public License version 2.1 requirements will be met:
+** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights. These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU General
+** Public License version 3.0 as published by the Free Software Foundation
+** and appearing in the file LICENSE.GPL included in the packaging of this
+** file. Please review the following information to ensure the GNU General
+** Public License version 3.0 requirements will be met:
+** http://www.gnu.org/copyleft/gpl.html.
+**
+** Other Usage
+** Alternatively, this file may be used in accordance with the terms and
+** conditions contained in a signed written agreement between you and Nokia.
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+
+#include "bridge_p.h"
+
+#include <atspi/atspi-constants.h>
+#include <qstring.h>
+
+#include "atspiadaptor_p.h"
+
+#include "cache_p.h"
+#include "constant_mappings_p.h"
+#include "dbusconnection_p.h"
+#include "struct_marshallers_p.h"
+
+#include "deviceeventcontroller_adaptor.h"
+
+QT_BEGIN_NAMESPACE
+
+/*!
+    \class QSpiAccessibleBridge
+
+    \brief QSpiAccessibleBridge
+
+    QSpiAccessibleBridge
+*/
+
+QSpiAccessibleBridge::QSpiAccessibleBridge()
+    : cache(0)
+{
+    dbusConnection = new DBusConnection();
+    if (!dBusConnection().isConnected())
+        qWarning() << "Could not connect to dbus.";
+
+    qSpiInitializeStructTypes();
+    initializeConstantMappings();
+
+    /* Create the cache of accessible objects */
+    cache = new QSpiDBusCache(dBusConnection(), this);
+    dec = new DeviceEventControllerAdaptor(this);
+
+    bool reg = dBusConnection().registerObject(QLatin1String(ATSPI_DBUS_PATH_DEC), this, QDBusConnection::ExportAdaptors);
+    qDebug() << "Registered DEC: " << reg;
+
+    dbusAdaptor = new AtSpiAdaptor(dbusConnection, this);
+    dBusConnection().registerVirtualObject(QLatin1String(QSPI_OBJECT_PATH_ACCESSIBLE), dbusAdaptor, QDBusConnection::SubPath);
+    dbusAdaptor->registerApplication();
+}
+
+QSpiAccessibleBridge::~QSpiAccessibleBridge()
+{
+    delete dbusConnection;
+} // Qt currently doesn't delete plugins.
+
+QDBusConnection QSpiAccessibleBridge::dBusConnection() const
+{
+    return dbusConnection->connection();
+}
+
+void QSpiAccessibleBridge::setRootObject(QAccessibleInterface *interface)
+{
+    // the interface we get will be for the QApplication object.
+    // we already cache it in the constructor.
+    Q_ASSERT(interface->object() == qApp);
+    dbusAdaptor->setInitialized(true);
+}
+
+void QSpiAccessibleBridge::notifyAccessibilityUpdate(QAccessibleEvent *event)
+{
+    dbusAdaptor->notify(event);
+}
+
+struct RoleMapping {
+    QAccessible::Role role;
+    AtspiRole spiRole;
+    const char *name;
+    const char *localizedName;
+};
+
+static RoleMapping map[] = {
+    { QAccessible::NoRole, ATSPI_ROLE_INVALID, "invalid", QT_TR_NOOP("invalid role") },
+    { QAccessible::TitleBar, ATSPI_ROLE_TEXT, "text", QT_TR_NOOP("title bar") },
+    { QAccessible::MenuBar, ATSPI_ROLE_MENU_BAR, "menu bar", QT_TR_NOOP("menu bar") },
+    { QAccessible::ScrollBar, ATSPI_ROLE_SCROLL_BAR, "scroll bar", QT_TR_NOOP("scroll bar") },
+    { QAccessible::Grip, ATSPI_ROLE_UNKNOWN, "unknown", QT_TR_NOOP("grip") },
+    { QAccessible::Sound, ATSPI_ROLE_UNKNOWN, "unknown", QT_TR_NOOP("sound") },
+    { QAccessible::Cursor, ATSPI_ROLE_ARROW, "arrow", QT_TR_NOOP("cursor") },
+    { QAccessible::Caret, ATSPI_ROLE_UNKNOWN, "unknown", QT_TR_NOOP("caret") },
+    { QAccessible::AlertMessage, ATSPI_ROLE_ALERT, "alert", QT_TR_NOOP("alert message") },
+    { QAccessible::Window, ATSPI_ROLE_WINDOW, "window", QT_TR_NOOP("window") },
+    { QAccessible::Client, ATSPI_ROLE_FILLER, "filler", QT_TR_NOOP("filler") },
+    { QAccessible::PopupMenu, ATSPI_ROLE_POPUP_MENU, "popup menu", QT_TR_NOOP("popup menu") },
+    { QAccessible::MenuItem, ATSPI_ROLE_MENU_ITEM, "menu item", QT_TR_NOOP("menu item") },
+    { QAccessible::ToolTip, ATSPI_ROLE_TOOL_TIP, "tool tip", QT_TR_NOOP("tool tip") },
+    { QAccessible::Application, ATSPI_ROLE_APPLICATION, "application", QT_TR_NOOP("application") },
+    { QAccessible::Document, ATSPI_ROLE_DOCUMENT_FRAME, "document frame", QT_TR_NOOP("document") },
+    { QAccessible::Pane, ATSPI_ROLE_PANEL, "panel", QT_TR_NOOP("pane") },
+    { QAccessible::Chart, ATSPI_ROLE_CHART, "chart", QT_TR_NOOP("chart") },
+    { QAccessible::Dialog, ATSPI_ROLE_DIALOG, "dialog", QT_TR_NOOP("dialog") },
+    { QAccessible::Border, ATSPI_ROLE_FRAME, "frame", QT_TR_NOOP("border") },
+    { QAccessible::Grouping, ATSPI_ROLE_PANEL, "panel", QT_TR_NOOP("grouping") },
+    { QAccessible::Separator, ATSPI_ROLE_SEPARATOR, "separator", QT_TR_NOOP("separator") },
+    { QAccessible::ToolBar, ATSPI_ROLE_TOOL_BAR, "tool bar", QT_TR_NOOP("tool bar") },
+    { QAccessible::StatusBar, ATSPI_ROLE_STATUS_BAR, "statusbar", QT_TR_NOOP("status bar") },
+    { QAccessible::Table, ATSPI_ROLE_TABLE, "table", QT_TR_NOOP("table") },
+    { QAccessible::ColumnHeader, ATSPI_ROLE_TABLE_COLUMN_HEADER, "column header", QT_TR_NOOP("column header") },
+    { QAccessible::RowHeader, ATSPI_ROLE_TABLE_ROW_HEADER, "row header", QT_TR_NOOP("row header") },
+    { QAccessible::Column, ATSPI_ROLE_TABLE_CELL, "table cell", QT_TR_NOOP("column") },
+    { QAccessible::Row, ATSPI_ROLE_TABLE_CELL, "table cell", QT_TR_NOOP("row") },
+    { QAccessible::Cell, ATSPI_ROLE_TABLE_CELL, "table cell", QT_TR_NOOP("cell") },
+    { QAccessible::Link, ATSPI_ROLE_LINK, "link", QT_TR_NOOP("link") },
+    { QAccessible::HelpBalloon, ATSPI_ROLE_DIALOG, "dialog", QT_TR_NOOP("help balloon") },
+    { QAccessible::Assistant, ATSPI_ROLE_DIALOG, "dialog", QT_TR_NOOP("assistant") },
+    { QAccessible::List, ATSPI_ROLE_LIST, "list", QT_TR_NOOP("list") },
+    { QAccessible::ListItem, ATSPI_ROLE_LIST_ITEM, "list item", QT_TR_NOOP("list item") },
+    { QAccessible::Tree, ATSPI_ROLE_TREE, "tree", QT_TR_NOOP("tree") },
+    { QAccessible::TreeItem, ATSPI_ROLE_TABLE_CELL, "tree item", QT_TR_NOOP("tree item") },
+    { QAccessible::PageTab, ATSPI_ROLE_PAGE_TAB, "page tab", QT_TR_NOOP("page tab") },
+    { QAccessible::PropertyPage, ATSPI_ROLE_PAGE_TAB, "page tab", QT_TR_NOOP("property page") },
+    { QAccessible::Indicator, ATSPI_ROLE_UNKNOWN, "unknown", QT_TR_NOOP("indicator") },
+    { QAccessible::Graphic, ATSPI_ROLE_IMAGE, "image", QT_TR_NOOP("graphic") },
+    { QAccessible::StaticText, ATSPI_ROLE_LABEL, "label", QT_TR_NOOP("label") },
+    { QAccessible::EditableText, ATSPI_ROLE_TEXT, "text", QT_TR_NOOP("text") },
+    { QAccessible::PushButton, ATSPI_ROLE_PUSH_BUTTON, "push button", QT_TR_NOOP("push button") },
+    { QAccessible::CheckBox, ATSPI_ROLE_CHECK_BOX, "check box", QT_TR_NOOP("check box") },
+    { QAccessible::RadioButton, ATSPI_ROLE_RADIO_BUTTON, "radio button", QT_TR_NOOP("radio box") },
+    { QAccessible::ComboBox, ATSPI_ROLE_COMBO_BOX, "combo box", QT_TR_NOOP("combo box") },
+    { QAccessible::ProgressBar, ATSPI_ROLE_PROGRESS_BAR, "progress bar", QT_TR_NOOP("progress bar") },
+    { QAccessible::Dial, ATSPI_ROLE_DIAL, "accelerator label", QT_TR_NOOP("dial") },
+    { QAccessible::HotkeyField, ATSPI_ROLE_TEXT, "text", QT_TR_NOOP("hotkey field") }, //FIXME text?
+    { QAccessible::Slider, ATSPI_ROLE_SLIDER, "slider", QT_TR_NOOP("slider") },
+    { QAccessible::SpinBox, ATSPI_ROLE_SPIN_BUTTON, "spin button", QT_TR_NOOP("spin box") },
+    { QAccessible::Canvas, ATSPI_ROLE_CANVAS, "canvas", QT_TR_NOOP("canvas") },
+    { QAccessible::Animation, ATSPI_ROLE_ANIMATION, "animation", QT_TR_NOOP("animation") },
+    { QAccessible::Equation, ATSPI_ROLE_TEXT, "text", QT_TR_NOOP("equation") },
+    { QAccessible::ButtonDropDown, ATSPI_ROLE_PUSH_BUTTON, "push button", QT_TR_NOOP("button drop down") },
+    { QAccessible::ButtonMenu, ATSPI_ROLE_PUSH_BUTTON, "push button", QT_TR_NOOP("button menu") },
+    { QAccessible::ButtonDropGrid, ATSPI_ROLE_PUSH_BUTTON, "push button", QT_TR_NOOP("button drop grid") },
+    { QAccessible::Whitespace, ATSPI_ROLE_FILLER, "filler", QT_TR_NOOP("whitespace") },
+    { QAccessible::PageTabList, ATSPI_ROLE_PAGE_TAB_LIST, "page tab list", QT_TR_NOOP("page tab list") },
+    { QAccessible::Clock, ATSPI_ROLE_UNKNOWN, "unknown", QT_TR_NOOP("clock") },
+    { QAccessible::Splitter, ATSPI_ROLE_SPLIT_PANE, "split pane", QT_TR_NOOP("splitter") },
+    { QAccessible::LayeredPane, ATSPI_ROLE_LAYERED_PANE, "layered pane", QT_TR_NOOP("layered pane") },
+    { QAccessible::UserRole, ATSPI_ROLE_UNKNOWN, "unknown", QT_TR_NOOP("user role") }
+};
+
+void QSpiAccessibleBridge::initializeConstantMappings()
+{
+    for (uint i = 0; i < sizeof(map) / sizeof(RoleMapping); ++i)
+        qSpiRoleMapping.insert(map[i].role, RoleNames(map[i].spiRole, QLatin1String(map[i].name), tr(map[i].localizedName)));
+}
+
+QT_END_NAMESPACE