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++ // Copyright (C) 2016 The Qt Company Ltd.
++ // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
++ #include "tracer.h"
++
++ #include "topicchooser.h"
++ #include "helpenginewrapper.h"
++
++ #include <QKeyEvent>
++ #include <QStandardItemModel>
++ #include <QSortFilterProxyModel>
++ #include <QUrl>
++
++ #include <QtHelp/QHelpLink>
++
++ #include <algorithm>
++
++ QT_BEGIN_NAMESPACE
++
++ using namespace Qt::StringLiterals;
++
++ // Sort QHelpLink lists such that deprecated QtLabs entries are last.
++ static bool isNotQtLabsUrl(const QHelpLink &hl)
++ {
++ return !hl.url.host().contains("qtlabsplatform"_L1);
++ }
++
++ TopicChooser::TopicChooser(QWidget *parent, const QString &keyword, QList<QHelpLink> docs)
++ : QDialog(parent)
++ , m_filterModel(new QSortFilterProxyModel(this))
++ {
++ std::stable_partition(docs.begin(), docs.end(), isNotQtLabsUrl);
++
++ TRACE_OBJ
++ ui.setupUi(this);
++
++ setFocusProxy(ui.lineEdit);
++ ui.lineEdit->installEventFilter(this);
++ ui.lineEdit->setPlaceholderText(tr("Filter"));
++ ui.label->setText(tr("Choose a topic for <b>%1</b>:").arg(keyword));
++
++ QStandardItemModel *model = new QStandardItemModel(this);
++ m_filterModel->setSourceModel(model);
++ m_filterModel->setFilterCaseSensitivity(Qt::CaseInsensitive);
++
++ for (const auto &doc : docs) {
++ m_links.append(doc.url);
++ QStandardItem *item = new QStandardItem(doc.title);
++ item->setToolTip(doc.url.toString());
++ model->appendRow(item);
++ }
++
++ ui.listWidget->setModel(m_filterModel);
++ ui.listWidget->setUniformItemSizes(true);
++ ui.listWidget->setEditTriggers(QAbstractItemView::NoEditTriggers);
++
++ if (m_filterModel->rowCount() != 0)
++ ui.listWidget->setCurrentIndex(m_filterModel->index(0, 0));
++
++ connect(ui.buttonCancel, &QAbstractButton::clicked,
++ this, &QDialog::reject);
++ connect(ui.buttonDisplay, &QAbstractButton::clicked,
++ this, &TopicChooser::acceptDialog);
++ connect(ui.lineEdit, &QLineEdit::textChanged,
++ this, &TopicChooser::setFilter);
++ connect(ui.listWidget, &QAbstractItemView::activated,
++ this, &TopicChooser::activated);
++
++ const QByteArray ba = HelpEngineWrapper::instance().topicChooserGeometry();
++ if (!ba.isEmpty())
++ restoreGeometry(ba);
++ }
++
++ TopicChooser::~TopicChooser()
++ {
++ HelpEngineWrapper::instance().setTopicChooserGeometry(saveGeometry());
++ }
++
++ QUrl TopicChooser::link() const
++ {
++ TRACE_OBJ
++ if (m_activedIndex.isValid())
++ return m_links.at(m_filterModel->mapToSource(m_activedIndex).row());
++ return QUrl();
++ }
++
++ void TopicChooser::acceptDialog()
++ {
++ TRACE_OBJ
++ m_activedIndex = ui.listWidget->currentIndex();
++ accept();
++ }
++
++ void TopicChooser::setFilter(const QString &pattern)
++ {
++ TRACE_OBJ
++ m_filterModel->setFilterFixedString(pattern);
++ if (m_filterModel->rowCount() != 0 && !ui.listWidget->currentIndex().isValid())
++ ui.listWidget->setCurrentIndex(m_filterModel->index(0, 0));
++ }
++
++ void TopicChooser::activated(const QModelIndex &index)
++ {
++ TRACE_OBJ
++ m_activedIndex = index;
++ accept();
++ }
++
++ bool TopicChooser::eventFilter(QObject *object, QEvent *event)
++ {
++ TRACE_OBJ
++ if (object == ui.lineEdit && event->type() == QEvent::KeyPress) {
++ QKeyEvent *keyEvent = static_cast<QKeyEvent*>(event);
++ switch (keyEvent->key()) {
++ case Qt::Key_Up:
++ case Qt::Key_Down:
++ case Qt::Key_PageUp:
++ case Qt::Key_PageDown:
++ QCoreApplication::sendEvent(ui.listWidget, event);
++ break;
++ }
++ } else if (ui.lineEdit && event->type() == QEvent::FocusIn
++ && static_cast<QFocusEvent *>(event)->reason() != Qt::MouseFocusReason) {
++ ui.lineEdit->selectAll();
++ ui.lineEdit->setFocus();
++ }
++ return QDialog::eventFilter(object, event);
++ }
++
++ QT_END_NAMESPACE