qt-creator/src/plugins/projectexplorer/sessionview.cpp

/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of Qt Creator.
**
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** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3 as published by the Free Software
** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
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#include "sessionview.h"

#include "session.h"

#include <QItemSelection>
#include <QStyledItemDelegate>
#include <QHeaderView>

namespace ProjectExplorer {
namespace Internal {

// custom item delegate class
class RemoveItemFocusDelegate : public QStyledItemDelegate
{
public:
    RemoveItemFocusDelegate(QObject *parent = nullptr) : QStyledItemDelegate(parent) {
    }

protected:
    void paint(QPainter* painter, const QStyleOptionViewItem& option, const QModelIndex& index) const;
};

void RemoveItemFocusDelegate::paint(QPainter* painter, const QStyleOptionViewItem & option, const QModelIndex &index) const
{
    QStyleOptionViewItem opt = option;
    opt.state &= ~QStyle::State_HasFocus;
    QStyledItemDelegate::paint(painter, opt, index);
}

SessionView::SessionView(QWidget *parent)
    : QTreeView(parent)
{
    setItemDelegate(new RemoveItemFocusDelegate(this));
    setSelectionBehavior(QAbstractItemView::SelectRows);
    setSelectionMode(QAbstractItemView::SingleSelection);
    setWordWrap(false);
    setRootIsDecorated(false);

    setModel(&m_sessionModel);

    QItemSelection firstRow(m_sessionModel.index(0,0), m_sessionModel.index(0, 0));
    selectionModel()->select(firstRow,
        QItemSelectionModel::QItemSelectionModel::SelectCurrent);

    connect(this, &QTreeView::activated, [this](const QModelIndex &index){
        emit activated(m_sessionModel.sessionAt(index.row()));
    });
    connect(selectionModel(), &QItemSelectionModel::currentRowChanged, [this]
            (const QModelIndex &index) {
        emit selected(m_sessionModel.sessionAt(index.row()));
    });
    connect(&m_sessionModel, &SessionModel::sessionSwitched,
        this, &SessionView::sessionSwitched);

    connect(&m_sessionModel, &SessionModel::modelReset,
        this, &SessionView::selectActiveSession);
 }

void SessionView::createNewSession()
{
    m_sessionModel.newSession();
}

void SessionView::deleteCurrentSession()
{
    m_sessionModel.deleteSession(currentSession());
}

void SessionView::cloneCurrentSession()
{
    m_sessionModel.cloneSession(currentSession());
}

void SessionView::renameCurrentSession()
{
    m_sessionModel.renameSession(currentSession());
}

void SessionView::switchToCurrentSession()
{
    m_sessionModel.switchToSession(currentSession());
}

QString SessionView::currentSession()
{
    return m_sessionModel.sessionAt(selectionModel()->currentIndex().row());
}

SessionModel *SessionView::sessionModel()
{
    return &m_sessionModel;
}

void SessionView::selectActiveSession()
{
    int row = m_sessionModel.indexOfSession(SessionManager::activeSession());
    selectionModel()->setCurrentIndex(model()->index(row, 0),
        QItemSelectionModel::ClearAndSelect | QItemSelectionModel::Rows);
}

void SessionView::showEvent(QShowEvent *event)
{
    QTreeView::showEvent(event);
    selectActiveSession();
    setFocus();
}

} // namespace Internal
} // namespace ProjectExplorer