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/****************************************************************************
**
** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of Qt Creator.
**
** 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://www.qt.io/licensing. For further information
** use the contact form at http://www.qt.io/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 or version 3 as published by the Free
** Software Foundation and appearing in the file LICENSE.LGPLv21 and
** LICENSE.LGPLv3 included in the packaging of this file. Please review the
** following information to ensure the GNU Lesser General Public License
** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
** 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.
**
****************************************************************************/
#include "topicchooser.h"
#include <QMap>
#include <QUrl>
#include <QKeyEvent>
#include <QStandardItemModel>
#include <QSortFilterProxyModel>
TopicChooser::TopicChooser(QWidget *parent, const QString &keyword,
const QMap<QString, QUrl> &links)
: QDialog(parent)
, m_filterModel(new QSortFilterProxyModel(this))
{
ui.setupUi(this);
setFocusProxy(ui.lineEdit);
ui.lineEdit->setFiltering(true);
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);
QMap<QString, QUrl>::const_iterator it = links.constBegin();
for (; it != links.constEnd(); ++it) {
m_links.append(it.value());
QStandardItem *item = new QStandardItem(it.key());
item->setToolTip(it.value().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.buttonDisplay, &QPushButton::clicked,
this, &TopicChooser::acceptDialog);
connect(ui.buttonCancel, &QPushButton::clicked,
this, &TopicChooser::reject);
connect(ui.listWidget, &QListView::activated,
this, &TopicChooser::activated);
connect(ui.lineEdit, &Utils::FancyLineEdit::filterChanged,
this, &TopicChooser::setFilter);
}
QUrl TopicChooser::link() const
{
if (m_activedIndex.isValid())
return m_links.at(m_filterModel->mapToSource(m_activedIndex).row());
return QUrl();
}
void TopicChooser::acceptDialog()
{
m_activedIndex = ui.listWidget->currentIndex();
accept();
}
void TopicChooser::setFilter(const QString &pattern)
{
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)
{
m_activedIndex = index;
accept();
}
bool TopicChooser::eventFilter(QObject *object, QEvent *event)
{
if (object == ui.lineEdit && event->type() == QEvent::KeyPress) {
QKeyEvent *ke = static_cast<QKeyEvent*>(event);
int dIndex = 0;
switch (ke->key()) {
case Qt::Key_Up:
dIndex = -1;
break;
case Qt::Key_Down:
dIndex = +1;
break;
case Qt::Key_PageUp:
dIndex = -5;
break;
case Qt::Key_PageDown:
dIndex = +5;
break;
default:
break;
}
if (dIndex != 0) {
QModelIndex idx = ui.listWidget->currentIndex();
int newIndex = qMin(m_filterModel->rowCount(idx.parent()) - 1,
qMax(0, idx.row() + dIndex));
idx = m_filterModel->index(newIndex, idx.column(), idx.parent());
if (idx.isValid())
ui.listWidget->setCurrentIndex(idx);
return true;
}
} 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);
}
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