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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
#include "qtwebenginecoreglobal.h"
#include "content/browser/accessibility/browser_accessibility_manager.h"
#include <QtGui/qtguiglobal.h>
#if QT_CONFIG(accessibility)
#include "browser_accessibility_qt.h"
#include "browser_accessibility_manager_qt.h"
#include "render_widget_host_view_qt.h" // WebContentsAccessibilityQt
#include "content/browser/accessibility/browser_accessibility.h"
#include "ui/accessibility/ax_enums.mojom.h"
#include <QtGui/qaccessible.h>
#endif // QT_CONFIG(accessibility)
namespace content {
// static
BrowserAccessibilityManager *BrowserAccessibilityManager::Create(
const ui::AXTreeUpdate &initialTree,
WebAXPlatformTreeManagerDelegate *delegate)
{
#if QT_CONFIG(accessibility)
Q_ASSERT(delegate);
QtWebEngineCore::WebContentsAccessibilityQt *access = nullptr;
access = static_cast<QtWebEngineCore::WebContentsAccessibilityQt *>(delegate->AccessibilityGetWebContentsAccessibility());
// Accessibility is not supported for guest views and child frames.
if (!access) {
return nullptr;
}
return new BrowserAccessibilityManagerQt(access, initialTree, delegate);
#else
Q_UNUSED(initialTree);
Q_UNUSED(delegate);
return nullptr;
#endif // QT_CONFIG(accessibility)
}
// static
BrowserAccessibilityManager *BrowserAccessibilityManager::Create(
WebAXPlatformTreeManagerDelegate *delegate)
{
#if QT_CONFIG(accessibility)
return BrowserAccessibilityManager::Create(BrowserAccessibilityManagerQt::GetEmptyDocument(), delegate);
#else
Q_UNUSED(delegate);
return nullptr;
#endif
}
#if QT_CONFIG(accessibility)
BrowserAccessibilityManagerQt::BrowserAccessibilityManagerQt(
QtWebEngineCore::WebContentsAccessibilityQt *webContentsAccessibility,
const ui::AXTreeUpdate &initialTree,
WebAXPlatformTreeManagerDelegate* delegate)
: BrowserAccessibilityManager(delegate)
, m_webContentsAccessibility(webContentsAccessibility)
{
Initialize(initialTree);
m_valid = true; // BrowserAccessibilityQt can start using the AXTree
}
BrowserAccessibilityManagerQt::~BrowserAccessibilityManagerQt()
{
m_valid = false; // BrowserAccessibilityQt should stop using the AXTree
}
QAccessibleInterface *BrowserAccessibilityManagerQt::rootParentAccessible()
{
content::BrowserAccessibility *parent_node = GetParentNodeFromParentTreeAsBrowserAccessibility();
if (!parent_node) {
Q_ASSERT(m_webContentsAccessibility);
return QAccessible::queryAccessibleInterface(m_webContentsAccessibility->accessibilityParentObject());
}
auto *parent_manager =
static_cast<BrowserAccessibilityManagerQt *>(parent_node->manager());
return parent_manager->rootParentAccessible();
}
void BrowserAccessibilityManagerQt::FireBlinkEvent(ax::mojom::Event event_type,
BrowserAccessibility *node,
int action_request_id)
{
auto *iface = toQAccessibleInterface(node);
switch (event_type) {
case ax::mojom::Event::kFocus: {
QAccessibleEvent event(iface, QAccessible::Focus);
if (event.object())
event.setChild(-1);
QAccessible::updateAccessibility(&event);
break;
}
case ax::mojom::Event::kCheckedStateChanged: {
QAccessible::State change;
change.checked = true;
QAccessibleStateChangeEvent event(iface, change);
if (event.object())
event.setChild(-1);
QAccessible::updateAccessibility(&event);
break;
}
case ax::mojom::Event::kValueChanged: {
QVariant value;
if (QAccessibleValueInterface *valueIface = iface->valueInterface())
value = valueIface->currentValue();
QAccessibleValueChangeEvent event(iface, value);
if (event.object())
event.setChild(-1);
QAccessible::updateAccessibility(&event);
break;
}
case ax::mojom::Event::kChildrenChanged:
break;
case ax::mojom::Event::kLayoutComplete:
break;
case ax::mojom::Event::kLoadComplete:
break;
case ax::mojom::Event::kTextChanged: {
QAccessibleTextUpdateEvent event(iface, -1, QString(), QString());
if (event.object())
event.setChild(-1);
QAccessible::updateAccessibility(&event);
break;
}
case ax::mojom::Event::kTextSelectionChanged: {
QAccessibleTextInterface *textIface = iface->textInterface();
if (textIface) {
int start = 0;
int end = 0;
textIface->selection(0, &start, &end);
if (start == end) {
QAccessibleTextCursorEvent event(iface, start);
if (event.object())
event.setChild(-1);
QAccessible::updateAccessibility(&event);
} else {
QAccessibleTextSelectionEvent event(iface, start, end);
if (event.object())
event.setChild(-1);
QAccessible::updateAccessibility(&event);
}
}
break;
}
default:
break;
}
}
void BrowserAccessibilityManagerQt::FireGeneratedEvent(ui::AXEventGenerator::Event event_type,
const ui::AXNode *node)
{
BrowserAccessibilityManager::FireGeneratedEvent(event_type, node);
BrowserAccessibility *wrapper = GetFromAXNode(node);
DCHECK(wrapper);
auto *iface = toQAccessibleInterface(wrapper);
switch (event_type) {
case ui::AXEventGenerator::Event::VALUE_IN_TEXT_FIELD_CHANGED:
if (iface->role() == QAccessible::EditableText) {
QAccessibleTextUpdateEvent event(iface, -1, QString(), QString());
if (event.object())
event.setChild(-1);
QAccessible::updateAccessibility(&event);
}
break;
default:
break;
}
}
#endif // QT_CONFIG(accessibility)
}
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