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/****************************************************************************
**
** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the Assistant 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 "openpagesswitcher.h"
#include "centralwidget.h"
#include "openpagesmodel.h"
#include "openpageswidget.h"
#include "tracer.h"
#include <QtCore/QEvent>
#include <QtGui/QKeyEvent>
#include <QtGui/QVBoxLayout>
QT_BEGIN_NAMESPACE
const int gWidth = 300;
const int gHeight = 200;
OpenPagesSwitcher::OpenPagesSwitcher(OpenPagesModel *model)
: QFrame(0, Qt::Popup)
, m_openPagesModel(model)
{
TRACE_OBJ
resize(gWidth, gHeight);
m_openPagesWidget = new OpenPagesWidget(m_openPagesModel);
// We disable the frame on this list view and use a QFrame around it instead.
// This improves the look with QGTKStyle.
#ifndef Q_WS_MAC
setFrameStyle(m_openPagesWidget->frameStyle());
#endif
m_openPagesWidget->setFrameStyle(QFrame::NoFrame);
m_openPagesWidget->allowContextMenu(false);
m_openPagesWidget->installEventFilter(this);
QVBoxLayout *layout = new QVBoxLayout(this);
layout->setMargin(0);
layout->addWidget(m_openPagesWidget);
connect(m_openPagesWidget, SIGNAL(closePage(QModelIndex)), this,
SIGNAL(closePage(QModelIndex)));
connect(m_openPagesWidget, SIGNAL(setCurrentPage(QModelIndex)), this,
SIGNAL(setCurrentPage(QModelIndex)));
}
OpenPagesSwitcher::~OpenPagesSwitcher()
{
TRACE_OBJ
}
void OpenPagesSwitcher::gotoNextPage()
{
TRACE_OBJ
selectPageUpDown(1);
}
void OpenPagesSwitcher::gotoPreviousPage()
{
TRACE_OBJ
selectPageUpDown(-1);
}
void OpenPagesSwitcher::selectAndHide()
{
TRACE_OBJ
setVisible(false);
emit setCurrentPage(m_openPagesWidget->currentIndex());
}
void OpenPagesSwitcher::selectCurrentPage()
{
TRACE_OBJ
m_openPagesWidget->selectCurrentPage();
}
void OpenPagesSwitcher::setVisible(bool visible)
{
TRACE_OBJ
QWidget::setVisible(visible);
if (visible)
setFocus();
}
void OpenPagesSwitcher::focusInEvent(QFocusEvent *event)
{
TRACE_OBJ
Q_UNUSED(event)
m_openPagesWidget->setFocus();
}
bool OpenPagesSwitcher::eventFilter(QObject *object, QEvent *event)
{
TRACE_OBJ
if (object == m_openPagesWidget) {
if (event->type() == QEvent::KeyPress) {
QKeyEvent *ke = static_cast<QKeyEvent*>(event);
if (ke->key() == Qt::Key_Escape) {
setVisible(false);
return true;
}
const int key = ke->key();
if (key == Qt::Key_Return || key == Qt::Key_Enter || key == Qt::Key_Space) {
emit setCurrentPage(m_openPagesWidget->currentIndex());
return true;
}
Qt::KeyboardModifier modifier = Qt::ControlModifier;
#ifdef Q_WS_MAC
modifier = Qt::AltModifier;
#endif
if (key == Qt::Key_Backtab
&& (ke->modifiers() == (modifier | Qt::ShiftModifier)))
gotoPreviousPage();
else if (key == Qt::Key_Tab && (ke->modifiers() == modifier))
gotoNextPage();
} else if (event->type() == QEvent::KeyRelease) {
QKeyEvent *ke = static_cast<QKeyEvent*>(event);
if (ke->modifiers() == 0
/*HACK this is to overcome some event inconsistencies between platforms*/
|| (ke->modifiers() == Qt::AltModifier
&& (ke->key() == Qt::Key_Alt || ke->key() == -1))) {
selectAndHide();
}
}
}
return QWidget::eventFilter(object, event);
}
void OpenPagesSwitcher::selectPageUpDown(int summand)
{
TRACE_OBJ
const int pageCount = m_openPagesModel->rowCount();
if (pageCount < 2)
return;
const QModelIndexList &list = m_openPagesWidget->selectionModel()->selectedIndexes();
if (list.isEmpty())
return;
QModelIndex index = list.first();
if (!index.isValid())
return;
index = m_openPagesModel->index((index.row() + summand + pageCount) % pageCount, 0);
if (index.isValid()) {
m_openPagesWidget->setCurrentIndex(index);
m_openPagesWidget->scrollTo(index, QAbstractItemView::PositionAtCenter);
}
}
QT_END_NAMESPACE
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