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/**************************************************************************
**
** This file is part of Qt Creator
**
** Copyright (c) 2012 Nokia Corporation and/or its subsidiary(-ies).
**
** Contact: Nokia Corporation (qt-info@nokia.com)
**
**
** GNU Lesser General Public License Usage
**
** 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, Nokia gives you certain additional
** rights. These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** Other Usage
**
** Alternatively, this file may be used in accordance with the terms and
** conditions contained in a signed written agreement between you and Nokia.
**
** If you have questions regarding the use of this file, please contact
** Nokia at qt-info@nokia.com.
**
**************************************************************************/
#include "openpageswidget.h"
#include "centralwidget.h"
#include "openpagesmodel.h"
#include <coreplugin/coreconstants.h>
#include <QtGui/QApplication>
#include <QtGui/QPainter>
#include <QtGui/QHeaderView>
#include <QtGui/QKeyEvent>
#include <QtGui/QMouseEvent>
#include <QtGui/QMenu>
#ifdef Q_OS_MAC
#include <qmacstyle_mac.h>
#endif
using namespace Help::Internal;
// -- OpenPagesDelegate
OpenPagesDelegate::OpenPagesDelegate(QObject *parent)
: QStyledItemDelegate(parent)
{
}
void OpenPagesDelegate::paint(QPainter *painter, const QStyleOptionViewItem &option,
const QModelIndex &index) const
{
if (option.state & QStyle::State_MouseOver) {
if ((QApplication::mouseButtons() & Qt::LeftButton) == 0)
pressedIndex = QModelIndex();
QBrush brush = option.palette.alternateBase();
if (index == pressedIndex)
brush = option.palette.dark();
painter->fillRect(option.rect, brush);
}
QStyledItemDelegate::paint(painter, option, index);
if (index.column() == 1 && index.model()->rowCount() > 1
&& option.state & QStyle::State_MouseOver) {
const QIcon icon(QLatin1String((option.state & QStyle::State_Selected) ?
Core::Constants::ICON_CLOSE : Core::Constants::ICON_CLOSE_DARK));
const QRect iconRect(option.rect.right() - option.rect.height(),
option.rect.top(), option.rect.height(), option.rect.height());
icon.paint(painter, iconRect, Qt::AlignRight | Qt::AlignVCenter);
}
}
// -- OpenPagesWidget
OpenPagesWidget::OpenPagesWidget(OpenPagesModel *model, QWidget *parent)
: QTreeView(parent)
, m_allowContextMenu(true)
{
setModel(model);
setIndentation(0);
setItemDelegate((m_delegate = new OpenPagesDelegate(this)));
setTextElideMode(Qt::ElideMiddle);
setAttribute(Qt::WA_MacShowFocusRect, false);
viewport()->setAttribute(Qt::WA_Hover);
setSelectionBehavior(QAbstractItemView::SelectRows);
setSelectionMode(QAbstractItemView::SingleSelection);
header()->hide();
header()->setStretchLastSection(false);
header()->setResizeMode(0, QHeaderView::Stretch);
header()->setResizeMode(1, QHeaderView::Fixed);
header()->resizeSection(1, 18);
installEventFilter(this);
setUniformRowHeights(true);
setContextMenuPolicy(Qt::CustomContextMenu);
connect(this, SIGNAL(clicked(QModelIndex)), this,
SLOT(handleClicked(QModelIndex)));
connect(this, SIGNAL(pressed(QModelIndex)), this,
SLOT(handlePressed(QModelIndex)));
connect(this, SIGNAL(customContextMenuRequested(QPoint)), this,
SLOT(contextMenuRequested(QPoint)));
}
OpenPagesWidget::~OpenPagesWidget()
{
}
void OpenPagesWidget::selectCurrentPage()
{
QItemSelectionModel * const selModel = selectionModel();
selModel->clearSelection();
selModel->select(model()->index(CentralWidget::instance()->currentIndex(), 0),
QItemSelectionModel::ClearAndSelect | QItemSelectionModel::Rows);
scrollTo(currentIndex());
}
void OpenPagesWidget::allowContextMenu(bool ok)
{
m_allowContextMenu = ok;
}
// -- private slots
void OpenPagesWidget::contextMenuRequested(QPoint pos)
{
QModelIndex index = indexAt(pos);
if (!index.isValid() || !m_allowContextMenu)
return;
if (index.column() == 1)
index = index.sibling(index.row(), 0);
QMenu contextMenu;
QAction *closeEditor = contextMenu.addAction(tr("Close %1").arg(index.data()
.toString()));
QAction *closeOtherEditors = contextMenu.addAction(tr("Close All Except %1")
.arg(index.data().toString()));
if (model()->rowCount() == 1) {
closeEditor->setEnabled(false);
closeOtherEditors->setEnabled(false);
}
QAction *action = contextMenu.exec(mapToGlobal(pos));
if (action == closeEditor)
emit closePage(index);
else if (action == closeOtherEditors)
emit closePagesExcept(index);
}
void OpenPagesWidget::handlePressed(const QModelIndex &index)
{
if (index.column() == 0)
emit setCurrentPage(index);
if (index.column() == 1)
m_delegate->pressedIndex = index;
}
void OpenPagesWidget::handleClicked(const QModelIndex &index)
{
// implemented here to handle the funky close button and to work around a
// bug in item views where the delegate wouldn't get the QStyle::State_MouseOver
if (index.column() == 1) {
if (model()->rowCount() > 1)
emit closePage(index);
QWidget *vp = viewport();
const QPoint &cursorPos = QCursor::pos();
QMouseEvent e(QEvent::MouseMove, vp->mapFromGlobal(cursorPos), cursorPos,
Qt::NoButton, 0, 0);
QCoreApplication::sendEvent(vp, &e);
}
}
// -- private
bool OpenPagesWidget::eventFilter(QObject *obj, QEvent *event)
{
if (obj == this && event->type() == QEvent::KeyPress) {
if (currentIndex().isValid()) {
QKeyEvent *ke = static_cast<QKeyEvent*>(event);
const int key = ke->key();
if ((key == Qt::Key_Return || key == Qt::Key_Enter || key == Qt::Key_Space)
&& ke->modifiers() == 0) {
emit setCurrentPage(currentIndex());
} else if ((key == Qt::Key_Delete || key == Qt::Key_Backspace)
&& ke->modifiers() == 0 && model()->rowCount() > 1) {
emit closePage(currentIndex());
}
}
}
return QWidget::eventFilter(obj, event);
}
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