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// Copyright (C) 2022 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 "autofillpopupwidget_p.h"
#include "qwebengineview.h"
#include "qwebengineview_p.h"
#include "autofill_popup_controller.h"
#include <QApplication>
#include <QBoxLayout>
#include <QEvent>
#include <QKeyEvent>
#include <QListView>
#include <QMouseEvent>
namespace QtWebEngineWidgetUI {
AutofillPopupWidget::AutofillPopupWidget(QtWebEngineCore::AutofillPopupController *controller,
QWebEngineView *parent)
: QFrame(parent, Qt::Popup), m_controller(controller), m_webEngineView(parent)
{
setAttribute(Qt::WA_WindowPropagation);
setAttribute(Qt::WA_X11NetWmWindowTypeCombo);
// we need a vertical layout
QBoxLayout *layout = new QBoxLayout(QBoxLayout::TopToBottom, this);
layout->setSpacing(0);
layout->setContentsMargins(QMargins());
m_listView = new QListView(m_webEngineView);
m_listView->setModel(m_controller->model());
m_listView->setTextElideMode(Qt::ElideMiddle);
// Based on QComboBoxPrivateContainer::setItemView
m_listView->setParent(this);
m_listView->setAttribute(Qt::WA_MacShowFocusRect, false);
layout->insertWidget(0, m_listView);
m_listView->setSizePolicy(QSizePolicy::Ignored, QSizePolicy::Ignored);
m_listView->installEventFilter(this);
// Necessary for filtering QEvent::MouseMove:
m_listView->viewport()->installEventFilter(this);
m_listView->setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
// TODO: Implement vertical scrollbar. Chromium also has it.
m_listView->setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
m_listView->setMouseTracking(true);
m_listView->setSelectionMode(QAbstractItemView::SingleSelection);
m_listView->setEditTriggers(QAbstractItemView::NoEditTriggers);
// Some styles (Mac) have a margin at the top and bottom of the popup.
layout->insertSpacing(0, 0);
layout->addSpacing(0);
connect(m_controller, &QtWebEngineCore::AutofillPopupController::currentIndexChanged,
m_listView, &QListView::setCurrentIndex);
}
AutofillPopupWidget::~AutofillPopupWidget() { }
// Based on QComboBox::showPopup()
void AutofillPopupWidget::showPopup(QPoint pos, int width, bool autoselectFirstSuggestion)
{
QStyle *const style = m_webEngineView->style();
QStyleOptionComboBox opt;
opt.initFrom(m_webEngineView);
if (autoselectFirstSuggestion)
m_controller->selectFirstSuggestion();
QRect listRect(pos, QSize(width, 0));
// Calculate height
{
int listHeight = 0;
int rowCount = m_controller->model()->rowCount();
for (int i = 0; i < rowCount; ++i) {
QModelIndex idx = m_controller->model()->index(i, 0);
listHeight += m_listView->visualRect(idx).height();
}
if (rowCount > 1)
listHeight += (rowCount - 1) * m_listView->spacing() * 2;
listRect.setHeight(listRect.height() + listHeight);
}
// Calculate height margin
{
int heightMargin = m_listView->spacing() * 2;
// Add the frame of the popup
const QMargins pm = contentsMargins();
heightMargin += pm.top() + pm.bottom();
// Add the frame of the list view
const QMargins vm = m_listView->contentsMargins();
heightMargin += vm.top() + vm.bottom();
listRect.setHeight(listRect.height() + heightMargin);
}
// Add space for margin at top and bottom if the style wants it
int styleMargin = style->pixelMetric(QStyle::PM_MenuVMargin, &opt, this) * 2;
listRect.setHeight(listRect.height() + styleMargin);
// Takes account of the mimium/maximum size of the popup
layout()->activate();
listRect.setSize(listRect.size().expandedTo(minimumSize()).boundedTo(maximumSize()));
setGeometry(listRect);
QFrame::show();
}
bool AutofillPopupWidget::eventFilter(QObject *object, QEvent *event)
{
switch (event->type()) {
case QEvent::MouseMove:
if (isVisible()) {
QMouseEvent *mouseEvent = static_cast<QMouseEvent *>(event);
QModelIndex indexUnderMouse = m_listView->indexAt(mouseEvent->position().toPoint());
if (indexUnderMouse.isValid()
&& indexUnderMouse.data(Qt::AccessibleDescriptionRole).toString()
!= QLatin1String("separator")) {
m_controller->selectSuggestion(indexUnderMouse.row());
}
}
return true;
case QEvent::MouseButtonRelease: {
QMouseEvent *mouseEvent = static_cast<QMouseEvent *>(event);
if (mouseEvent->button() == Qt::LeftButton) {
m_controller->acceptSuggestion();
return true;
}
break;
}
default:
break;
}
return QFrame::eventFilter(object, event);
}
void AutofillPopupWidget::keyPressEvent(QKeyEvent *event)
{
// AutofillPopupControllerImpl::HandleKeyPressEvent()
// chrome/browser/ui/autofill/autofill_popup_controller_impl.cc
switch (event->key()) {
case Qt::Key_Up:
m_controller->selectPreviousSuggestion();
return;
case Qt::Key_Down:
m_controller->selectNextSuggestion();
return;
case Qt::Key_PageUp:
m_controller->selectFirstSuggestion();
return;
case Qt::Key_PageDown:
m_controller->selectLastSuggestion();
return;
case Qt::Key_Escape:
m_webEngineView->d_ptr->hideAutofillPopup();
return;
case Qt::Key_Enter:
case Qt::Key_Return:
m_controller->acceptSuggestion();
return;
case Qt::Key_Delete:
// Remove suggestion is not supported for datalist.
// Forward delete to view to be able to remove selected text.
break;
case Qt::Key_Tab:
m_controller->acceptSuggestion();
break;
default:
break;
}
QCoreApplication::sendEvent(m_webEngineView->focusWidget(), event);
}
void AutofillPopupWidget::keyReleaseEvent(QKeyEvent *event)
{
// Do not forward release events of the overridden key presses.
switch (event->key()) {
case Qt::Key_Up:
case Qt::Key_Down:
case Qt::Key_PageUp:
case Qt::Key_PageDown:
case Qt::Key_Escape:
case Qt::Key_Enter:
case Qt::Key_Return:
return;
default:
break;
}
QCoreApplication::sendEvent(m_webEngineView->focusWidget(), event);
}
} // namespace QtWebEngineWidgetUI
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