-
Frederik Gladhorn authored
This commit adds the basics to bridge the blink accessibility classes to QAccessibleInterfaces. Note that it needs two follow up commits to implement the bridging from the QWidget/Qt Quick worlds. [ChangeLog][Accessibility] QtWebEngine now has accessibility support, enabling assistive technology such as screen readers to work with it. Change-Id: Ied1d97e61a024115ac7a9245331211f6d9fac1b4 Reviewed-by:
Zeno Albisser <zeno.albisser@digia.com> Reviewed-by:
Andras Becsi <andras.becsi@digia.com>
a9853701
/******************************************************************************** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).** Contact: http://www.qt-project.org/legal**** This file is part of the QtWebEngine module of the Qt Toolkit.**** $QT_BEGIN_LICENSE:LGPL$** Commercial License Usage** Licensees holding valid commercial Qt licenses may use this file in** accordance with the commercial license agreement provided with the** Software or, alternatively, in accordance with the terms contained in** a written agreement between you and Digia. For licensing terms and** conditions see http://qt.digia.com/licensing. For further information** use the contact form at http://qt.digia.com/contact-us.**** GNU Lesser General Public License Usage** Alternatively, 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, Digia gives you certain additional** rights. These rights are described in the Digia 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.****** $QT_END_LICENSE$******************************************************************************/#include "qquickwebengineview_p.h"#include "qquickwebengineview_p_p.h"#include "javascript_dialog_controller.h"#include "qquickwebenginehistory_p.h"#include "qquickwebengineloadrequest_p.h"#include "qquickwebenginenewviewrequest_p.h"#include "render_widget_host_view_qt_delegate_quick.h"#include "render_widget_host_view_qt_delegate_quickwindow.h"#include "ui_delegates_manager.h"#include "web_contents_adapter.h"#include "web_engine_error.h"#include <QGuiApplication>#include <QQmlComponent>#include <QQmlContext>#include <QQmlEngine>#include <QQmlProperty>#include <QScreen>#include <QStringBuilder>#include <QUrl>#include <private/qqmlmetatype_p.h>#include <private/qguiapplication_p.h>#include <qpa/qplatformintegration.h>QT_BEGIN_NAMESPACEQQuickWebEngineViewPrivate::QQuickWebEngineViewPrivate() : adapter(new WebContentsAdapter)7172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140
, e(new QQuickWebEngineViewExperimental(this))
, v(new QQuickWebEngineViewport(this))
, m_history(new QQuickWebEngineHistory(this))
, contextMenuExtraItems(0)
, loadProgress(0)
, inspectable(false)
, m_isFullScreen(false)
, devicePixelRatio(QGuiApplication::primaryScreen()->devicePixelRatio())
, m_dpiScale(1.0)
{
// The gold standard for mobile web content is 160 dpi, and the devicePixelRatio expected
// is the (possibly quantized) ratio of device dpi to 160 dpi.
// However GUI toolkits on non-iOS platforms may be using different criteria than relative
// DPI (depending on the history of that platform), dictating the choice of
// QScreen::devicePixelRatio().
// Where applicable (i.e. non-iOS mobile platforms), override QScreen::devicePixelRatio
// and instead use a reasonable default value for viewport.devicePixelRatio to avoid every
// app having to use this experimental API.
QString platform = qApp->platformName().toLower();
if (platform == QStringLiteral("qnx")) {
qreal webPixelRatio = QGuiApplication::primaryScreen()->physicalDotsPerInch() / 160;
// Quantize devicePixelRatio to increments of 1 to allow JS and media queries to select
// 1x, 2x, 3x etc assets that fit an integral number of pixels.
setDevicePixelRatio(qMax(1, qRound(webPixelRatio)));
}
}
QQuickWebEngineViewPrivate::~QQuickWebEngineViewPrivate()
{
}
QQuickWebEngineViewExperimental *QQuickWebEngineViewPrivate::experimental() const
{
return e.data();
}
QQuickWebEngineViewport *QQuickWebEngineViewPrivate::viewport() const
{
return v.data();
}
UIDelegatesManager *QQuickWebEngineViewPrivate::ui()
{
Q_Q(QQuickWebEngineView);
if (m_uIDelegatesManager.isNull())
m_uIDelegatesManager.reset(new UIDelegatesManager(q));
return m_uIDelegatesManager.data();
}
RenderWidgetHostViewQtDelegate *QQuickWebEngineViewPrivate::CreateRenderWidgetHostViewQtDelegate(RenderWidgetHostViewQtDelegateClient *client)
{
return new RenderWidgetHostViewQtDelegateQuick(client, /*isPopup = */ false);
}
RenderWidgetHostViewQtDelegate *QQuickWebEngineViewPrivate::CreateRenderWidgetHostViewQtDelegateForPopup(RenderWidgetHostViewQtDelegateClient *client)
{
Q_Q(QQuickWebEngineView);
const bool hasWindowCapability = QGuiApplicationPrivate::platformIntegration()->hasCapability(QPlatformIntegration::MultipleWindows);
RenderWidgetHostViewQtDelegateQuick *quickDelegate = new RenderWidgetHostViewQtDelegateQuick(client, /*isPopup = */ true);
if (hasWindowCapability) {
RenderWidgetHostViewQtDelegateQuickWindow *wrapperWindow = new RenderWidgetHostViewQtDelegateQuickWindow(quickDelegate);
quickDelegate->setParentItem(wrapperWindow->contentItem());
return wrapperWindow;
}
quickDelegate->setParentItem(q);
return quickDelegate;
}
bool QQuickWebEngineViewPrivate::contextMenuRequested(const WebEngineContextMenuData &data)
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{
Q_Q(QQuickWebEngineView);
QObject *menu = ui()->addMenu(0, QString(), data.pos);
if (!menu)
return false;
// Populate our menu
MenuItemHandler *item = 0;
if (data.selectedText.isEmpty()) {
item = new MenuItemHandler(menu);
QObject::connect(item, &MenuItemHandler::triggered, q, &QQuickWebEngineView::goBack);
ui()->addMenuItem(item, QObject::tr("Back"), QStringLiteral("go-previous"), q->canGoBack());
item = new MenuItemHandler(menu);
QObject::connect(item, &MenuItemHandler::triggered, q, &QQuickWebEngineView::goForward);
ui()->addMenuItem(item, QObject::tr("Forward"), QStringLiteral("go-next"), q->canGoForward());
item = new MenuItemHandler(menu);
QObject::connect(item, &MenuItemHandler::triggered, q, &QQuickWebEngineView::reload);
ui()->addMenuItem(item, QObject::tr("Reload"), QStringLiteral("view-refresh"));
} else {
item = new CopyMenuItem(menu, data.selectedText);
ui()->addMenuItem(item, QObject::tr("Copy..."));
}
if (!data.linkText.isEmpty() && data.linkUrl.isValid()) {
item = new NavigateMenuItem(menu, adapter, data.linkUrl);
ui()->addMenuItem(item, QObject::tr("Navigate to..."));
item = new CopyMenuItem(menu, data.linkUrl.toString());
ui()->addMenuItem(item, QObject::tr("Copy link address"));
}
// FIXME: expose the context menu data as an attached property to make this more useful
if (contextMenuExtraItems) {
ui()->addMenuSeparator(menu);
if (QObject* menuExtras = contextMenuExtraItems->create(ui()->creationContextForComponent(contextMenuExtraItems))) {
menuExtras->setParent(menu);
QQmlListReference entries(menu, QQmlMetaType::defaultProperty(menu).name(), qmlEngine(q));
if (entries.isValid())
entries.append(menuExtras);
}
}
// Now fire the popup() method on the top level menu
QMetaObject::invokeMethod(menu, "popup");
return true;
}
void QQuickWebEngineViewPrivate::javascriptDialog(QSharedPointer<JavaScriptDialogController> dialog)
{
ui()->showDialog(dialog);
}
void QQuickWebEngineViewPrivate::runFileChooser(FileChooserMode mode, const QString &defaultFileName, const QStringList &acceptedMimeTypes)
{
ui()->showFilePicker(mode, defaultFileName, acceptedMimeTypes, adapter);
}
void QQuickWebEngineViewPrivate::passOnFocus(bool reverse)
{
Q_Q(QQuickWebEngineView);
focusNextPrev(q, !reverse);
}
void QQuickWebEngineViewPrivate::titleChanged(const QString &title)
{
Q_Q(QQuickWebEngineView);
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Q_UNUSED(title);
Q_EMIT q->titleChanged();
}
void QQuickWebEngineViewPrivate::urlChanged(const QUrl &url)
{
Q_Q(QQuickWebEngineView);
Q_UNUSED(url);
Q_EMIT q->urlChanged();
}
void QQuickWebEngineViewPrivate::iconChanged(const QUrl &url)
{
Q_Q(QQuickWebEngineView);
icon = url;
Q_EMIT q->iconChanged();
}
void QQuickWebEngineViewPrivate::loadProgressChanged(int progress)
{
Q_Q(QQuickWebEngineView);
loadProgress = progress;
Q_EMIT q->loadProgressChanged();
}
void QQuickWebEngineViewPrivate::didUpdateTargetURL(const QUrl &hoveredUrl)
{
Q_Q(QQuickWebEngineView);
Q_EMIT q->linkHovered(hoveredUrl);
}
QRectF QQuickWebEngineViewPrivate::viewportRect() const
{
Q_Q(const QQuickWebEngineView);
return QRectF(q->x(), q->y(), q->width(), q->height());
}
QPoint QQuickWebEngineViewPrivate::mapToGlobal(const QPoint &posInView) const
{
Q_Q(const QQuickWebEngineView);
return q->window() ? q->window()->mapToGlobal(posInView) : QPoint();
}
qreal QQuickWebEngineViewPrivate::dpiScale() const
{
return m_dpiScale;
}
void QQuickWebEngineViewPrivate::loadStarted(const QUrl &provisionalUrl)
{
Q_Q(QQuickWebEngineView);
m_history->reset();
QQuickWebEngineLoadRequest loadRequest(provisionalUrl, QQuickWebEngineView::LoadStartedStatus);
Q_EMIT q->loadingChanged(&loadRequest);
}
void QQuickWebEngineViewPrivate::loadCommitted()
{
m_history->reset();
}
void QQuickWebEngineViewPrivate::loadFinished(bool success, int error_code, const QString &error_description)
{
Q_Q(QQuickWebEngineView);
m_history->reset();
if (error_code == WebEngineError::UserAbortedError) {
QQuickWebEngineLoadRequest loadRequest(q->url(), QQuickWebEngineView::LoadStoppedStatus);
Q_EMIT q->loadingChanged(&loadRequest);
return;
}
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if (success) {
QQuickWebEngineLoadRequest loadRequest(q->url(), QQuickWebEngineView::LoadSucceededStatus);
Q_EMIT q->loadingChanged(&loadRequest);
return;
}
Q_ASSERT(error_code);
QQuickWebEngineLoadRequest loadRequest(
q->url(),
QQuickWebEngineView::LoadFailedStatus,
error_description,
error_code,
static_cast<QQuickWebEngineView::ErrorDomain>(WebEngineError::toQtErrorDomain(error_code)));
Q_EMIT q->loadingChanged(&loadRequest);
return;
}
void QQuickWebEngineViewPrivate::focusContainer()
{
Q_Q(QQuickWebEngineView);
q->forceActiveFocus();
}
void QQuickWebEngineViewPrivate::adoptNewWindow(WebContentsAdapter *newWebContents, WindowOpenDisposition disposition, bool userGesture, const QRect &)
{
QQuickWebEngineNewViewRequest request;
// This increases the ref-count of newWebContents and will tell Chromium
// to start loading it and possibly return it to its parent page window.open().
request.m_adapter = newWebContents;
request.m_isUserInitiated = userGesture;
switch (disposition) {
case WebContentsAdapterClient::NewForegroundTabDisposition:
case WebContentsAdapterClient::NewBackgroundTabDisposition:
request.m_destination = QQuickWebEngineView::NewViewInTab;
break;
case WebContentsAdapterClient::NewPopupDisposition:
request.m_destination = QQuickWebEngineView::NewViewInDialog;
break;
case WebContentsAdapterClient::NewWindowDisposition:
request.m_destination = QQuickWebEngineView::NewViewInWindow;
break;
default:
Q_UNREACHABLE();
}
emit e->newViewRequested(&request);
}
void QQuickWebEngineViewPrivate::close()
{
Q_UNREACHABLE();
}
void QQuickWebEngineViewPrivate::requestFullScreen(bool fullScreen)
{
Q_EMIT e->fullScreenRequested(fullScreen);
}
bool QQuickWebEngineViewPrivate::isFullScreen() const
{
return e->isFullScreen();
}
void QQuickWebEngineViewPrivate::javaScriptConsoleMessage(JavaScriptConsoleMessageLevel level, const QString& message, int lineNumber, const QString& sourceID)
{
Q_Q(QQuickWebEngineView);
Q_UNUSED(level);
Q_EMIT q->javaScriptConsoleMessage(static_cast<QQuickWebEngineView::JavaScriptConsoleMessageLevel>(level), message, lineNumber, sourceID);
}
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void QQuickWebEngineViewPrivate::runMediaAccessPermissionRequest(const QUrl &securityOrigin, WebContentsAdapterClient::MediaRequestFlags requestFlags)
{
if (!requestFlags)
return;
QQuickWebEngineViewExperimental::Feature feature;
if (requestFlags.testFlag(WebContentsAdapterClient::MediaAudioCapture) && requestFlags.testFlag(WebContentsAdapterClient::MediaVideoCapture))
feature = QQuickWebEngineViewExperimental::MediaAudioVideoDevices;
else if (requestFlags.testFlag(WebContentsAdapterClient::MediaAudioCapture))
feature = QQuickWebEngineViewExperimental::MediaAudioDevices;
else // WebContentsAdapterClient::MediaVideoCapture
feature = QQuickWebEngineViewExperimental::MediaVideoDevices;
Q_EMIT e->featurePermissionRequested(securityOrigin, feature);
}
QObject *QQuickWebEngineViewPrivate::accessibilityParentObject()
{
Q_Q(QQuickWebEngineView);
return q;
}
void QQuickWebEngineViewPrivate::setDevicePixelRatio(qreal devicePixelRatio)
{
this->devicePixelRatio = devicePixelRatio;
QScreen *screen = window ? window->screen() : QGuiApplication::primaryScreen();
m_dpiScale = devicePixelRatio / screen->devicePixelRatio();
}
void QQuickWebEngineViewPrivate::adoptWebContents(WebContentsAdapter *webContents)
{
if (!webContents) {
qWarning("Trying to open an empty request, it was either already used or was invalidated."
"\nYou must complete the request synchronously within the newViewRequested signal handler."
" If a view hasn't been adopted before returning, the request will be invalidated.");
return;
}
Q_Q(QQuickWebEngineView);
// This throws away the WebContentsAdapter that has been used until now.
// All its states, particularly the loading URL, are replaced by the adopted WebContentsAdapter.
adapter = webContents;
adapter->initialize(this);
// Emit signals for values that might be different from the previous WebContentsAdapter.
emit q->titleChanged();
emit q->urlChanged();
emit q->iconChanged();
// FIXME: The current loading state should be stored in the WebContentAdapter
// and it should be checked here if the signal emission is really necessary.
QQuickWebEngineLoadRequest loadRequest(adapter->activeUrl(), QQuickWebEngineView::LoadSucceededStatus);
emit q->loadingChanged(&loadRequest);
emit q->loadProgressChanged();
}
QQuickWebEngineView::QQuickWebEngineView(QQuickItem *parent)
: QQuickItem(*(new QQuickWebEngineViewPrivate), parent)
{
Q_D(QQuickWebEngineView);
d->e->q_ptr = this;
d->adapter->initialize(d);
this->setFocus(true);
this->setActiveFocusOnTab(true);
this->setFlag(QQuickItem::ItemIsFocusScope);
}
QQuickWebEngineView::~QQuickWebEngineView()
{
}
QUrl QQuickWebEngineView::url() const
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{
Q_D(const QQuickWebEngineView);
return d->adapter->activeUrl();
}
void QQuickWebEngineView::setUrl(const QUrl& url)
{
if (url.isEmpty())
return;
Q_D(QQuickWebEngineView);
d->adapter->load(url);
}
QUrl QQuickWebEngineView::icon() const
{
Q_D(const QQuickWebEngineView);
return d->icon;
}
void QQuickWebEngineView::loadHtml(const QString &html, const QUrl &baseUrl)
{
Q_D(QQuickWebEngineView);
d->adapter->setContent(html.toUtf8(), QStringLiteral("text/html;charset=UTF-8"), baseUrl);
}
void QQuickWebEngineView::goBack()
{
Q_D(QQuickWebEngineView);
d->adapter->navigateToOffset(-1);
}
void QQuickWebEngineView::goForward()
{
Q_D(QQuickWebEngineView);
d->adapter->navigateToOffset(1);
}
void QQuickWebEngineView::reload()
{
Q_D(QQuickWebEngineView);
d->adapter->reload();
}
void QQuickWebEngineView::stop()
{
Q_D(QQuickWebEngineView);
d->adapter->stop();
}
void QQuickWebEngineViewPrivate::didRunJavaScript(quint64 requestId, const QVariant &result)
{
QJSValue callback = m_callbacks.take(requestId);
QJSValueList args;
args.append(callback.engine()->toScriptValue(result));
callback.call(args);
}
bool QQuickWebEngineView::isLoading() const
{
Q_D(const QQuickWebEngineView);
return d->adapter->isLoading();
}
int QQuickWebEngineView::loadProgress() const
{
Q_D(const QQuickWebEngineView);
return d->loadProgress;
}
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QString QQuickWebEngineView::title() const
{
Q_D(const QQuickWebEngineView);
return d->adapter->pageTitle();
}
bool QQuickWebEngineView::canGoBack() const
{
Q_D(const QQuickWebEngineView);
return d->adapter->canGoBack();
}
bool QQuickWebEngineView::canGoForward() const
{
Q_D(const QQuickWebEngineView);
return d->adapter->canGoForward();
}
void QQuickWebEngineView::forceActiveFocus()
{
Q_FOREACH (QQuickItem *child, childItems()) {
if (qobject_cast<RenderWidgetHostViewQtDelegateQuick *>(child)) {
child->forceActiveFocus();
break;
}
}
}
bool QQuickWebEngineViewExperimental::inspectable() const
{
Q_D(const QQuickWebEngineView);
return d->inspectable;
}
void QQuickWebEngineViewExperimental::setInspectable(bool enable)
{
Q_D(QQuickWebEngineView);
d->inspectable = enable;
d->adapter->enableInspector(enable);
}
void QQuickWebEngineViewExperimental::setIsFullScreen(bool fullscreen)
{
d_ptr->m_isFullScreen = fullscreen;
emit isFullScreenChanged();
}
bool QQuickWebEngineViewExperimental::isFullScreen() const
{
return d_ptr->m_isFullScreen;
}
void QQuickWebEngineViewExperimental::setExtraContextMenuEntriesComponent(QQmlComponent *contextMenuExtras)
{
if (d_ptr->contextMenuExtraItems == contextMenuExtras)
return;
d_ptr->contextMenuExtraItems = contextMenuExtras;
emit extraContextMenuEntriesComponentChanged();
}
QQmlComponent *QQuickWebEngineViewExperimental::extraContextMenuEntriesComponent() const
{
return d_ptr->contextMenuExtraItems;
}
void QQuickWebEngineViewExperimental::runJavaScript(const QString &script, const QJSValue &callback)
{
if (!callback.isUndefined()) {
quint64 requestId = d_ptr->adapter->runJavaScriptCallbackResult(script);
d_ptr->m_callbacks.insert(requestId, callback);
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} else
d_ptr->adapter->runJavaScript(script);
}
QQuickWebEngineHistory *QQuickWebEngineViewExperimental::navigationHistory() const
{
return d_ptr->m_history.data();
}
void QQuickWebEngineViewExperimental::grantFeaturePermission(const QUrl &securityOrigin, QQuickWebEngineViewExperimental::Feature feature, bool granted)
{
if (!granted && feature >= MediaAudioDevices && feature <= MediaAudioVideoDevices) {
d_ptr->adapter->grantMediaAccessPermission(securityOrigin, WebContentsAdapterClient::MediaNone);
return;
}
switch (feature) {
case MediaAudioDevices:
d_ptr->adapter->grantMediaAccessPermission(securityOrigin, WebContentsAdapterClient::MediaAudioCapture);
break;
case MediaVideoDevices:
d_ptr->adapter->grantMediaAccessPermission(securityOrigin, WebContentsAdapterClient::MediaVideoCapture);
break;
case MediaAudioVideoDevices:
d_ptr->adapter->grantMediaAccessPermission(securityOrigin, WebContentsAdapterClient::MediaRequestFlags(WebContentsAdapterClient::MediaAudioCapture
| WebContentsAdapterClient::MediaVideoCapture));
break;
}
}
void QQuickWebEngineViewExperimental::goBackTo(int index)
{
int count = d_ptr->adapter->currentNavigationEntryIndex();
if (index < 0 || index >= count)
return;
d_ptr->adapter->navigateToIndex(count - 1 - index);
}
void QQuickWebEngineViewExperimental::goForwardTo(int index)
{
int count = d_ptr->adapter->navigationEntryCount() - d_ptr->adapter->currentNavigationEntryIndex() - 1;
if (index < 0 || index >= count)
return;
d_ptr->adapter->navigateToIndex(d_ptr->adapter->currentNavigationEntryIndex() + 1 + index);
}
void QQuickWebEngineView::geometryChanged(const QRectF &newGeometry, const QRectF &oldGeometry)
{
QQuickItem::geometryChanged(newGeometry, oldGeometry);
Q_FOREACH(QQuickItem *child, childItems()) {
if (qobject_cast<RenderWidgetHostViewQtDelegateQuick *>(child))
child->setSize(newGeometry.size());
}
}
void QQuickWebEngineView::itemChange(ItemChange change, const ItemChangeData &value)
{
Q_D(QQuickWebEngineView);
if (change == ItemSceneChange || change == ItemVisibleHasChanged) {
if (window() && isVisible())
d->adapter->wasShown();
else
d->adapter->wasHidden();
}
QQuickItem::itemChange(change, value);
}
QQuickWebEngineViewExperimental::QQuickWebEngineViewExperimental(QQuickWebEngineViewPrivate *viewPrivate)
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: q_ptr(0)
, d_ptr(viewPrivate)
{
}
QQuickWebEngineViewport *QQuickWebEngineViewExperimental::viewport() const
{
Q_D(const QQuickWebEngineView);
return d->viewport();
}
QQuickWebEngineViewport::QQuickWebEngineViewport(QQuickWebEngineViewPrivate *viewPrivate)
: d_ptr(viewPrivate)
{
}
qreal QQuickWebEngineViewport::devicePixelRatio() const
{
Q_D(const QQuickWebEngineView);
return d->devicePixelRatio;
}
void QQuickWebEngineViewport::setDevicePixelRatio(qreal devicePixelRatio)
{
Q_D(QQuickWebEngineView);
// Valid range is [1, inf)
devicePixelRatio = qMax(qreal(1.0), devicePixelRatio);
if (d->devicePixelRatio == devicePixelRatio)
return;
d->setDevicePixelRatio(devicePixelRatio);
d->adapter->dpiScaleChanged();
Q_EMIT devicePixelRatioChanged();
}
QT_END_NAMESPACE
#include "moc_qquickwebengineview_p.cpp"
#include "moc_qquickwebengineview_p_p.cpp"