/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** 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 The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** 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
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-3.0.html.
**
****************************************************************************/

#include "buildconfiguration.h"
#include "deployconfiguration.h"
#include "kit.h"
#include "kitmanager.h"
#include "miniprojecttargetselector.h"
#include "projectexplorer.h"
#include "projectexplorericons.h"
#include "project.h"
#include "projectmodels.h"
#include "runconfiguration.h"
#include "session.h"
#include "target.h"

#include <utils/algorithm.h>
#include <utils/stringutils.h>
#include <utils/styledbar.h>
#include <utils/stylehelper.h>
#include <utils/theme/theme.h>

#include <coreplugin/icore.h>
#include <coreplugin/coreconstants.h>
#include <coreplugin/modemanager.h>

#include <QGuiApplication>
#include <QTimer>
#include <QLayout>
#include <QLabel>
#include <QList>
#include <QListWidget>
#include <QStatusBar>
#include <QKeyEvent>
#include <QPainter>
#include <QPixmap>
#include <QStyleFactory>
#include <QAction>
#include <QItemDelegate>

static QIcon createCenteredIcon(const QIcon &icon, const QIcon &overlay)
{
    QPixmap targetPixmap;
    const qreal appDevicePixelRatio = qApp->devicePixelRatio();
    const auto deviceSpaceIconSize = static_cast<int>(Core::Constants::MODEBAR_ICON_SIZE * appDevicePixelRatio);
    targetPixmap = QPixmap(deviceSpaceIconSize, deviceSpaceIconSize);
    targetPixmap.setDevicePixelRatio(appDevicePixelRatio);
    targetPixmap.fill(Qt::transparent);
    QPainter painter(&targetPixmap); // painter in user space

    QPixmap pixmap = icon.pixmap(Core::Constants::MODEBAR_ICON_SIZE); // already takes app devicePixelRatio into account
    qreal pixmapDevicePixelRatio = pixmap.devicePixelRatio();
    painter.drawPixmap((Core::Constants::MODEBAR_ICON_SIZE - pixmap.width() / pixmapDevicePixelRatio) / 2,
                       (Core::Constants::MODEBAR_ICON_SIZE - pixmap.height() / pixmapDevicePixelRatio) / 2, pixmap);
    if (!overlay.isNull()) {
        pixmap = overlay.pixmap(Core::Constants::MODEBAR_ICON_SIZE); // already takes app devicePixelRatio into account
        pixmapDevicePixelRatio = pixmap.devicePixelRatio();
        painter.drawPixmap((Core::Constants::MODEBAR_ICON_SIZE - pixmap.width() / pixmapDevicePixelRatio) / 2,
                           (Core::Constants::MODEBAR_ICON_SIZE - pixmap.height() / pixmapDevicePixelRatio) / 2, pixmap);
    }

    return QIcon(targetPixmap);
}

using namespace ProjectExplorer;
using namespace ProjectExplorer::Internal;
using namespace Utils;

static bool projectLesserThan(Project *p1, Project *p2)
{
    int result = caseFriendlyCompare(p1->displayName(), p2->displayName());
    if (result != 0)
        return result < 0;
    else
        return p1 < p2;
}

static QString displayNameFor(QObject *object)
{
    if (auto t = qobject_cast<Target *>(object))
        return t->displayName();
    if (auto pc = qobject_cast<ProjectConfiguration *>(object))
        return pc->displayName();
    QTC_CHECK(false);
    return {};
}

static QString toolTipFor(QObject *object)
{
    if (auto t = qobject_cast<Target *>(object))
        return t->toolTip();
    if (auto pc = qobject_cast<ProjectConfiguration *>(object))
        return pc->toolTip();
    QTC_CHECK(false);
    return {};
}


////////
// TargetSelectorDelegate
////////
class TargetSelectorDelegate : public QItemDelegate
{
public:
    TargetSelectorDelegate(ListWidget *parent) : QItemDelegate(parent), m_listWidget(parent) { }
private:
    QSize sizeHint(const QStyleOptionViewItem &option, const QModelIndex &index) const override;
    void paint(QPainter *painter,
               const QStyleOptionViewItem &option,
               const QModelIndex &index) const override;
    ListWidget *m_listWidget;
};

QSize TargetSelectorDelegate::sizeHint(const QStyleOptionViewItem &option, const QModelIndex &index) const
{
    Q_UNUSED(option)
    Q_UNUSED(index)
    return QSize(m_listWidget->size().width(), 30);
}

void TargetSelectorDelegate::paint(QPainter *painter,
                                   const QStyleOptionViewItem &option,
                                   const QModelIndex &index) const
{
    painter->save();
    painter->setClipping(false);

    QColor textColor = creatorTheme()->color(Theme::MiniProjectTargetSelectorTextColor);
    if (option.state & QStyle::State_Selected) {
        QColor color;
        if (option.state & QStyle::State_HasFocus) {
            color = option.palette.highlight().color();
            textColor = option.palette.highlightedText().color();
        } else {
            color = option.palette.dark().color();
        }

        if (creatorTheme()->flag(Theme::FlatToolBars)) {
            painter->fillRect(option.rect, color);
        } else {
            painter->fillRect(option.rect, color.darker(140));
            static const QImage selectionGradient(":/projectexplorer/images/targetpanel_gradient.png");
            StyleHelper::drawCornerImage(selectionGradient, painter, option.rect.adjusted(0, 0, 0, -1), 5, 5, 5, 5);
            const QRectF borderRect = QRectF(option.rect).adjusted(0.5, 0.5, -0.5, -0.5);
            painter->setPen(QColor(255, 255, 255, 60));
            painter->drawLine(borderRect.topLeft(), borderRect.topRight());
            painter->setPen(QColor(255, 255, 255, 30));
            painter->drawLine(borderRect.bottomLeft() - QPointF(0, 1), borderRect.bottomRight() - QPointF(0, 1));
            painter->setPen(QColor(0, 0, 0, 80));
            painter->drawLine(borderRect.bottomLeft(), borderRect.bottomRight());
        }
    }

    QFontMetrics fm(option.font);
    QString text = index.data(Qt::DisplayRole).toString();
    painter->setPen(textColor);
    QString elidedText = fm.elidedText(text, Qt::ElideMiddle, option.rect.width() - 12);
    if (elidedText != text)
        const_cast<QAbstractItemModel *>(index.model())->setData(index, text, Qt::ToolTipRole);
    else
        const_cast<QAbstractItemModel *>(index.model())
            ->setData(index, index.model()->data(index, Qt::UserRole + 1).toString(), Qt::ToolTipRole);
    painter->drawText(option.rect.left() + 6, option.rect.top() + (option.rect.height() - fm.height()) / 2 + fm.ascent(), elidedText);

    painter->restore();
}

////////
// ListWidget
////////
ListWidget::ListWidget(QWidget *parent) : QListWidget(parent)
{
    setFocusPolicy(Qt::NoFocus);
    setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
    setAlternatingRowColors(false);
    setFocusPolicy(Qt::WheelFocus);
    setItemDelegate(new TargetSelectorDelegate(this));
    setAttribute(Qt::WA_MacShowFocusRect, false);
    const QColor bgColor = creatorTheme()->color(Theme::MiniProjectTargetSelectorBackgroundColor);
    const QString bgColorName = creatorTheme()->flag(Theme::FlatToolBars)
            ? bgColor.lighter(120).name() : bgColor.name();
    setStyleSheet(QString::fromLatin1("QListWidget { background: %1; border-style: none; }").arg(bgColorName));
    setSizePolicy(QSizePolicy::MinimumExpanding, QSizePolicy::MinimumExpanding);
}

void ListWidget::keyPressEvent(QKeyEvent *event)
{
    if (event->key() == Qt::Key_Left)
        focusPreviousChild();
    else if (event->key() == Qt::Key_Right)
        focusNextChild();
    else
        QListWidget::keyPressEvent(event);
}

void ListWidget::keyReleaseEvent(QKeyEvent *event)
{
    if (event->key() != Qt::Key_Left && event->key() != Qt::Key_Right)
        QListWidget::keyReleaseEvent(event);
}

void ListWidget::setMaxCount(int maxCount)
{
    m_maxCount = maxCount;
    updateGeometry();
}

int ListWidget::maxCount()
{
    return m_maxCount;
}

int ListWidget::optimalWidth() const
{
    return m_optimalWidth;
}

void ListWidget::setOptimalWidth(int width)
{
    m_optimalWidth = width;
    updateGeometry();
}

int ListWidget::padding()
{
    // there needs to be enough extra pixels to show a scrollbar
    return 2 * style()->pixelMetric(QStyle::PM_FocusFrameHMargin, nullptr, this)
            + style()->pixelMetric(QStyle::PM_ScrollBarExtent, nullptr, this)
            + 10;
}

////////
// ProjectListWidget
////////
ProjectListWidget::ProjectListWidget(QWidget *parent)
    : ListWidget(parent), m_ignoreIndexChange(false)
{
    SessionManager *sessionManager = SessionManager::instance();
    connect(sessionManager, &SessionManager::projectAdded,
            this, &ProjectListWidget::addProject);
    connect(sessionManager, &SessionManager::aboutToRemoveProject,
            this, &ProjectListWidget::removeProject);
    connect(sessionManager, &SessionManager::startupProjectChanged,
            this, &ProjectListWidget::changeStartupProject);
    connect(sessionManager, &SessionManager::projectDisplayNameChanged,
            this, &ProjectListWidget::projectDisplayNameChanged);
    connect(this, &QListWidget::currentRowChanged,
            this, &ProjectListWidget::setProject);
}

QListWidgetItem *ProjectListWidget::itemForProject(Project *project)
{
    for (int i = 0; i < count(); ++i) {
        QListWidgetItem *currentItem = item(i);
        if (currentItem->data(Qt::UserRole).value<Project*>() == project)
            return currentItem;
    }
    return nullptr;
}

QString ProjectListWidget::fullName(Project *project)
{
    return tr("%1 (%2)").arg(project->displayName(), project->projectFilePath().toUserOutput());
}

void ProjectListWidget::addProject(Project *project)
{
    m_ignoreIndexChange = true;

    int pos = count();
    for (int i = 0; i < count(); ++i) {
        auto *p = item(i)->data(Qt::UserRole).value<Project*>();
        if (projectLesserThan(project, p)) {
            pos = i;
            break;
        }
    }

    bool useFullName = false;
    for (int i = 0; i < count(); ++i) {
        auto *p = item(i)->data(Qt::UserRole).value<Project*>();
        if (p->displayName() == project->displayName()) {
            useFullName = true;
            item(i)->setText(fullName(p));
        }
    }

    QString displayName = useFullName ? fullName(project) : project->displayName();
    auto *item = new QListWidgetItem();
    item->setData(Qt::UserRole, QVariant::fromValue(project));
    item->setText(displayName);
    insertItem(pos, item);

    if (project == SessionManager::startupProject())
        setCurrentItem(item);

    QFontMetrics fn(font());
    int width = fn.horizontalAdvance(displayName) + padding();
    if (width > optimalWidth())
        setOptimalWidth(width);

    m_ignoreIndexChange = false;
}

void ProjectListWidget::removeProject(Project *project)
{
    m_ignoreIndexChange = true;

    QListWidgetItem *listItem = itemForProject(project);
    delete listItem;

    // Update display names
    QString name = project->displayName();
    int countDisplayName = 0;
    int otherIndex = -1;
    for (int i = 0; i < count(); ++i) {
        auto *p = item(i)->data(Qt::UserRole).value<Project *>();
        if (p->displayName() == name) {
            ++countDisplayName;
            otherIndex = i;
        }
    }
    if (countDisplayName == 1) {
        auto *p = item(otherIndex)->data(Qt::UserRole).value<Project *>();
        item(otherIndex)->setText(p->displayName());
    }

    QFontMetrics fn(font());

    // recheck optimal width
    int width = 0;
    for (int i = 0; i < count(); ++i)
        width = qMax(fn.horizontalAdvance(item(i)->text()) + padding(), width);
    setOptimalWidth(width);

    m_ignoreIndexChange = false;
}

void ProjectListWidget::projectDisplayNameChanged(Project *project)
{
    m_ignoreIndexChange = true;

    int oldPos = 0;
    bool useFullName = false;
    for (int i = 0; i < count(); ++i) {
        auto *p = item(i)->data(Qt::UserRole).value<Project*>();
        if (p == project) {
            oldPos = i;
        } else if (p->displayName() == project->displayName()) {
            useFullName = true;
            item(i)->setText(fullName(p));
        }
    }

    bool isCurrentItem = (oldPos == currentRow());
    QListWidgetItem *projectItem = takeItem(oldPos);

    int pos = count();
    for (int i = 0; i < count(); ++i) {
        auto *p = item(i)->data(Qt::UserRole).value<Project*>();
        if (projectLesserThan(project, p)) {
            pos = i;
            break;
        }
    }

    QString displayName = useFullName ? fullName(project) : project->displayName();
    projectItem->setText(displayName);
    insertItem(pos, projectItem);
    if (isCurrentItem)
        setCurrentRow(pos);

    // recheck optimal width
    QFontMetrics fn(font());
    int width = 0;
    for (int i = 0; i < count(); ++i)
        width = qMax(fn.horizontalAdvance(item(i)->text()) + padding(), width);
    setOptimalWidth(width);

    m_ignoreIndexChange = false;
}

void ProjectListWidget::setProject(int index)
{
    if (m_ignoreIndexChange)
        return;
    if (index < 0)
        return;
    auto *p = item(index)->data(Qt::UserRole).value<Project *>();
    SessionManager::setStartupProject(p);
}

void ProjectListWidget::changeStartupProject(Project *project)
{
    setCurrentItem(itemForProject(project));
}

/////////
// GenericListWidget
/////////

GenericListWidget::GenericListWidget(QWidget *parent)
    : ListWidget(parent), m_ignoreIndexChange(false)
{
    connect(this, &QListWidget::currentRowChanged,
            this, &GenericListWidget::rowChanged);
}

void GenericListWidget::setProjectConfigurations(const QList<QObject *> &list, QObject *active)
{
    m_ignoreIndexChange = true;
    clear();

    for (int i = 0; i < count(); ++i) {
        auto obj = objectAt(i);
        if (auto t = qobject_cast<Target *>(obj)) {
            disconnect(t, &Target::kitChanged,
                   this, &GenericListWidget::displayNameChanged);
        } else if (auto pc = qobject_cast<ProjectConfiguration *>(obj)) {
            disconnect(pc, &ProjectConfiguration::displayNameChanged,
                   this, &GenericListWidget::displayNameChanged);
        }
    }

    QFontMetrics fn(font());
    int width = 0;
    for (QObject *pc : list) {
        addProjectConfiguration(pc);
        width = qMax(width, fn.horizontalAdvance(displayNameFor(pc)) + padding());
    }
    setOptimalWidth(width);
    setActiveProjectConfiguration(active);

    m_ignoreIndexChange = false;
}

QObject *GenericListWidget::objectAt(int row) const
{
    return item(row)->data(Qt::UserRole).value<QObject *>();
}

void GenericListWidget::setActiveProjectConfiguration(QObject *active)
{
    QListWidgetItem *item = itemForProjectConfiguration(active);
    setCurrentItem(item);
}

void GenericListWidget::addProjectConfiguration(QObject *obj)
{
    const QString displayName = displayNameFor(obj);
    const QString toolTip = toolTipFor(obj);

    m_ignoreIndexChange = true;
    auto lwi = new QListWidgetItem();
    lwi->setText(displayName);
    lwi->setData(Qt::ToolTipRole, toolTip);
    lwi->setData(Qt::UserRole + 1, toolTip);
    lwi->setData(Qt::UserRole, QVariant::fromValue(obj));

    // Figure out pos
    int pos = count();
    for (int i = 0; i < count(); ++i) {
        QObject *p = objectAt(i);
        if (caseFriendlyCompare(displayName, displayNameFor(p)) < 0) {
            pos = i;
            break;
        }
    }
    insertItem(pos, lwi);

    if (auto t = qobject_cast<Target *>(obj)) {
        connect(t, &Target::kitChanged, this,
                &GenericListWidget::displayNameChanged);
        connect(t, &Target::kitChanged, this,
                &GenericListWidget::toolTipChanged);
    } else if (auto pc = qobject_cast<ProjectConfiguration *>(obj)) {
        connect(pc, &ProjectConfiguration::displayNameChanged,
                this, &GenericListWidget::displayNameChanged);
        connect(pc, &ProjectConfiguration::toolTipChanged,
                this, &GenericListWidget::toolTipChanged);
    }

    QFontMetrics fn(font());
    int width = fn.horizontalAdvance(displayName) + padding();
    if (width > optimalWidth())
        setOptimalWidth(width);

    m_ignoreIndexChange = false;
}

void GenericListWidget::removeProjectConfiguration(QObject *obj)
{
    m_ignoreIndexChange = true;
    if (auto t = qobject_cast<Target *>(obj)) {
        disconnect(t, &Target::kitChanged,
                   this, &GenericListWidget::displayNameChanged);
    } else if (auto pc = qobject_cast<ProjectConfiguration *>(obj)) {
        disconnect(pc, &ProjectConfiguration::displayNameChanged,
                   this, &GenericListWidget::displayNameChanged);
    }
    delete itemForProjectConfiguration(obj);

    QFontMetrics fn(font());
    int width = 0;
    for (int i = 0; i < count(); ++i)
        width = qMax(width, fn.horizontalAdvance(displayNameFor(objectAt(i))) + padding());

    setOptimalWidth(width);

    m_ignoreIndexChange = false;
}

void GenericListWidget::rowChanged(int index)
{
    if (m_ignoreIndexChange)
        return;
    if (index < 0)
        return;
    emit changeActiveProjectConfiguration(objectAt(index));
}

void GenericListWidget::displayNameChanged()
{
    m_ignoreIndexChange = true;
    QObject *activeObject = nullptr;
    if (currentItem())
        activeObject = currentItem()->data(Qt::UserRole).value<QObject *>();

    QObject *obj = sender();
    int index = -1;
    int i = 0;
    for (; i < count(); ++i) {
        QListWidgetItem *lwi = item(i);
        if (lwi->data(Qt::UserRole).value<QObject *>() == obj) {
            index = i;
            break;
        }
    }
    if (index == -1)
        return;

    const QString displayName = displayNameFor(obj);
    QListWidgetItem *lwi = takeItem(i);
    lwi->setText(displayName);
    int pos = count();
    for (int i = 0; i < count(); ++i) {
        if (caseFriendlyCompare(displayName, displayNameFor(objectAt(i))) < 0) {
            pos = i;
            break;
        }
    }
    insertItem(pos, lwi);
    if (activeObject)
        setCurrentItem(itemForProjectConfiguration(activeObject));

    QFontMetrics fn(font());
    int width = 0;
    for (int i = 0; i < count(); ++i)
        width = qMax(width, fn.horizontalAdvance(displayNameFor(objectAt(i))) + padding());

    setOptimalWidth(width);

    m_ignoreIndexChange = false;
}

void GenericListWidget::toolTipChanged()
{
    QObject *obj = sender();
    if (QListWidgetItem *lwi = itemForProjectConfiguration(obj)) {
        const QString toolTip = toolTipFor(obj);
        lwi->setData(Qt::ToolTipRole, toolTip);
        lwi->setData(Qt::UserRole + 1, toolTip);
    }
}

QListWidgetItem *GenericListWidget::itemForProjectConfiguration(QObject *pc)
{
    for (int i = 0; i < count(); ++i) {
        QListWidgetItem *lwi = item(i);
        if (lwi->data(Qt::UserRole).value<QObject *>() == pc)
            return lwi;
    }
    return nullptr;
}

/////////
// KitAreaWidget
/////////

KitAreaWidget::KitAreaWidget(QWidget *parent) : QWidget(parent),
    m_layout(new QGridLayout(this))
{
    m_layout->setContentsMargins(3, 3, 3, 3);
    setAutoFillBackground(true);
    connect(KitManager::instance(), &KitManager::kitUpdated, this, &KitAreaWidget::updateKit);
}

KitAreaWidget::~KitAreaWidget()
{
    setKit(nullptr);
}

void KitAreaWidget::setKit(Kit *k)
{
    foreach (KitAspectWidget *w, m_widgets)
        delete(w);
    m_widgets.clear();

    if (!k)
        return;

    foreach (QLabel *l, m_labels)
        l->deleteLater();
    m_labels.clear();

    int row = 0;
    for (KitAspect *aspect : KitManager::kitAspects()) {
        if (k && k->isMutable(aspect->id())) {
            KitAspectWidget *widget = aspect->createConfigWidget(k);
            m_widgets << widget;
            QLabel *label = new QLabel(aspect->displayName());
            m_labels << label;

            widget->setStyle(QStyleFactory::create(QLatin1String("fusion")));
            widget->setPalette(palette());

            m_layout->addWidget(label, row, 0);
            m_layout->addWidget(widget->mainWidget(), row, 1);
            m_layout->addWidget(widget->buttonWidget(), row, 2);

            ++row;
        }
    }
    m_kit = k;

    setHidden(m_widgets.isEmpty());
}

void KitAreaWidget::updateKit(Kit *k)
{
    if (!m_kit || m_kit != k)
        return;

    bool addedMutables = false;
    QList<Core::Id> knownIdList = Utils::transform(m_widgets, &KitAspectWidget::kitInformationId);

    for (KitAspect *aspect : KitManager::kitAspects()) {
        const Core::Id currentId = aspect->id();
        if (m_kit->isMutable(currentId) && !knownIdList.removeOne(currentId)) {
            addedMutables = true;
            break;
        }
    }
    const bool removedMutables = !knownIdList.isEmpty();

    if (addedMutables || removedMutables) {
        // Redo whole setup if the number of mutable settings did change
        setKit(m_kit);
    } else {
        // Refresh all widgets if the number of mutable settings did not change
        foreach (KitAspectWidget *w, m_widgets)
            w->refresh();
    }
}

/////////
// MiniProjectTargetSelector
/////////

QWidget *MiniProjectTargetSelector::createTitleLabel(const QString &text)
{
    auto *bar = new StyledBar(this);
    bar->setSingleRow(true);
    auto *toolLayout = new QVBoxLayout(bar);
    toolLayout->setContentsMargins(6, 0, 6, 0);
    toolLayout->setSpacing(0);

    QLabel *l = new QLabel(text);
    QFont f = l->font();
    f.setBold(true);
    l->setFont(f);
    toolLayout->addWidget(l);

    int panelHeight = l->fontMetrics().height() + 12;
    bar->ensurePolished(); // Required since manhattanstyle overrides height
    bar->setFixedHeight(panelHeight);
    return bar;
}

MiniProjectTargetSelector::MiniProjectTargetSelector(QAction *targetSelectorAction, QWidget *parent) :
    QWidget(parent),
    m_projectAction(targetSelectorAction)
{
    setProperty("panelwidget", true);
    setContentsMargins(QMargins(0, 1, 1, 8));
    setWindowFlags(Qt::Popup);

    targetSelectorAction->setIcon(creatorTheme()->flag(Theme::FlatSideBarIcons)
                                  ? Icons::DESKTOP_DEVICE.icon()
                                  : style()->standardIcon(QStyle::SP_ComputerIcon));
    targetSelectorAction->setProperty("titledAction", true);

    m_kitAreaWidget = new KitAreaWidget(this);

    m_summaryLabel = new QLabel(this);
    m_summaryLabel->setContentsMargins(3, 3, 3, 3);
    m_summaryLabel->setAlignment(Qt::AlignLeft | Qt::AlignTop);
    m_summaryLabel->setStyleSheet(QString::fromLatin1("background: %1;")
        .arg(creatorTheme()->color(Theme::MiniProjectTargetSelectorSummaryBackgroundColor).name()));
    m_summaryLabel->setSizePolicy(QSizePolicy::MinimumExpanding, QSizePolicy::MinimumExpanding);
    m_summaryLabel->setTextInteractionFlags(m_summaryLabel->textInteractionFlags() | Qt::LinksAccessibleByMouse);

    m_listWidgets.resize(LAST);
    m_titleWidgets.resize(LAST);
    m_listWidgets[PROJECT] = nullptr; //project is not a generic list widget

    m_titleWidgets[PROJECT] = createTitleLabel(tr("Project"));
    m_projectListWidget = new ProjectListWidget(this);

    QStringList titles;
    titles << tr("Kit") << tr("Build")
           << tr("Deploy") << tr("Run");

    for (int i = TARGET; i < LAST; ++i) {
        m_titleWidgets[i] = createTitleLabel(titles.at(i -1));
        m_listWidgets[i] = new GenericListWidget(this);
    }

    // Validate state: At this point the session is still empty!
    Project *startup = SessionManager::startupProject();
    QTC_CHECK(!startup);
    QTC_CHECK(SessionManager::projects().isEmpty());

    connect(m_summaryLabel, &QLabel::linkActivated,
            this, &MiniProjectTargetSelector::switchToProjectsMode);

    SessionManager *sessionManager = SessionManager::instance();
    connect(sessionManager, &SessionManager::startupProjectChanged,
            this, &MiniProjectTargetSelector::changeStartupProject);

    connect(sessionManager, &SessionManager::projectAdded,
            this, &MiniProjectTargetSelector::projectAdded);
    connect(sessionManager, &SessionManager::projectRemoved,
            this, &MiniProjectTargetSelector::projectRemoved);
    connect(sessionManager, &SessionManager::projectDisplayNameChanged,
            this, &MiniProjectTargetSelector::updateActionAndSummary);

    // for icon changes:
    connect(ProjectExplorer::KitManager::instance(), &KitManager::kitUpdated,
            this, &MiniProjectTargetSelector::kitChanged);

    connect(m_listWidgets[TARGET], &GenericListWidget::changeActiveProjectConfiguration,
            this, [this](QObject *pc) {
                SessionManager::setActiveTarget(m_project, static_cast<Target *>(pc), SetActive::Cascade);
            });
    connect(m_listWidgets[BUILD], &GenericListWidget::changeActiveProjectConfiguration,
            this, [this](QObject *pc) {
                 SessionManager::setActiveBuildConfiguration(m_project->activeTarget(),
                                                             static_cast<BuildConfiguration *>(pc), SetActive::Cascade);
            });
    connect(m_listWidgets[DEPLOY], &GenericListWidget::changeActiveProjectConfiguration,
            this, [this](QObject *pc) {
                 SessionManager::setActiveDeployConfiguration(m_project->activeTarget(),
                                                              static_cast<DeployConfiguration *>(pc), SetActive::Cascade);
            });
    connect(m_listWidgets[RUN], &GenericListWidget::changeActiveProjectConfiguration,
            this, [this](QObject *pc) {
                 m_project->activeTarget()->setActiveRunConfiguration(static_cast<RunConfiguration *>(pc));
            });
}

bool MiniProjectTargetSelector::event(QEvent *event)
{
    if (event->type() == QEvent::LayoutRequest) {
        doLayout(true);
        return true;
    } else if (event->type() == QEvent::ShortcutOverride) {
        if (static_cast<QKeyEvent *>(event)->key() == Qt::Key_Escape) {
            event->accept();
            return true;
        }
    }
    return QWidget::event(event);
}

// does some fancy calculations to ensure proper widths for the list widgets
QVector<int> MiniProjectTargetSelector::listWidgetWidths(int minSize, int maxSize)
{
    QVector<int> result;
    result.resize(LAST);
    if (m_projectListWidget->isVisibleTo(this))
        result[PROJECT] = m_projectListWidget->optimalWidth();
    else
        result[PROJECT] = -1;

    for (int i = TARGET; i < LAST; ++i) {
        if (m_listWidgets[i]->isVisibleTo(this))
            result[i] = m_listWidgets[i]->optimalWidth();
        else
            result[i] = -1;
    }

    int totalWidth = 0;
    // Adjust to minimum width of title
    for (int i = PROJECT; i < LAST; ++i) {
        if (result[i] != -1) {
            // We want at least 100 pixels per column
            int width = qMax(m_titleWidgets[i]->sizeHint().width(), 100);
            if (result[i] < width)
                result[i] = width;
            totalWidth += result[i];
        }
    }

    if (totalWidth == 0) // All hidden
        return result;

    bool tooSmall;
    if (totalWidth < minSize)
        tooSmall = true;
    else if (totalWidth > maxSize)
        tooSmall = false;
    else
        return result;

    int widthToDistribute = tooSmall ? (minSize - totalWidth)
                                     : (totalWidth - maxSize);
    QVector<int> indexes;
    indexes.reserve(LAST);
    for (int i = PROJECT; i < LAST; ++i)
        if (result[i] != -1)
            indexes.append(i);

    if (tooSmall) {
        Utils::sort(indexes, [&result](int i, int j) {
            return result[i] < result[j];
        });
    } else {
        Utils::sort(indexes, [&result](int i, int j) {
            return result[i] > result[j];
        });
    }

    int i = 0;
    int first = result[indexes.first()]; // biggest or smallest

    // we resize the biggest columns until they are the same size as the second biggest
    // since it looks prettiest if all the columns are the same width
    while (true) {
        for (; i < indexes.size(); ++i) {
            if (result[indexes[i]] != first)
                break;
        }
        int next = tooSmall ? INT_MAX : 0;
        if (i < indexes.size())
            next = result[indexes[i]];

        int delta;
        if (tooSmall)
            delta = qMin(next - first, widthToDistribute / qMax(i, 1));
        else
            delta = qMin(first - next, widthToDistribute / qMax(i, 1));

        if (delta == 0)
            return result;

        if (tooSmall) {
            for (int j = 0; j < i; ++j)
                result[indexes[j]] += delta;
        } else {
            for (int j = 0; j < i; ++j)
                result[indexes[j]] -= delta;
        }

        widthToDistribute -= delta * i;
        if (widthToDistribute <= 0)
            return result;

        first = result[indexes.first()];
        i = 0; // TODO can we do better?
    }
}

void MiniProjectTargetSelector::doLayout(bool keepSize)
{
    // An unconfigured project shows empty build/deploy/run sections
    // if there's a configured project in the seesion
    // that could be improved
    static QStatusBar *statusBar = Core::ICore::statusBar();
    static auto *actionBar = Core::ICore::mainWindow()->findChild<QWidget*>(QLatin1String("actionbar"));
    Q_ASSERT(actionBar);

    m_kitAreaWidget->move(0, 0);

    int oldSummaryLabelY = m_summaryLabel->y();

    int kitAreaHeight = m_kitAreaWidget->isVisibleTo(this) ? m_kitAreaWidget->sizeHint().height() : 0;

    // 1. Calculate the summary label height
    int summaryLabelY = 1 + kitAreaHeight;

    int summaryLabelHeight = 0;
    int oldSummaryLabelHeight = m_summaryLabel->height();
    bool onlySummary = false;
    // Count the number of lines
    int visibleLineCount = m_projectListWidget->isVisibleTo(this) ? 0 : 1;
    for (int i = TARGET; i < LAST; ++i)
        visibleLineCount += m_listWidgets[i]->isVisibleTo(this) ? 0 : 1;

    if (visibleLineCount == LAST) {
        summaryLabelHeight = m_summaryLabel->sizeHint().height();
        onlySummary = true;
    } else {
        if (visibleLineCount < 3) {
            if (Utils::anyOf(SessionManager::projects(), &Project::needsConfiguration))
                visibleLineCount = 3;
        }
        if (visibleLineCount)
            summaryLabelHeight = m_summaryLabel->sizeHint().height();
    }

    if (keepSize && oldSummaryLabelHeight > summaryLabelHeight)
        summaryLabelHeight = oldSummaryLabelHeight;

    m_summaryLabel->move(0, summaryLabelY);

    // Height to be aligned with side bar button
    int alignedWithActionHeight = 210;
    if (actionBar->isVisible())
        alignedWithActionHeight = actionBar->height() - statusBar->height();
    int bottomMargin = 9;
    int heightWithoutKitArea = 0;

    if (!onlySummary) {
        // list widget height
        int maxItemCount = m_projectListWidget->maxCount();
        for (int i = TARGET; i < LAST; ++i)
            maxItemCount = qMax(maxItemCount, m_listWidgets[i]->maxCount());

        int titleWidgetsHeight = m_titleWidgets.first()->height();
        if (keepSize) {
            heightWithoutKitArea = height() - oldSummaryLabelY + 1;
        } else {
            // Clamp the size of the listwidgets to be
            // at least as high as the sidebar button
            // and at most twice as high
            heightWithoutKitArea = summaryLabelHeight
                    + qBound(alignedWithActionHeight,
                             maxItemCount * 30 + bottomMargin + titleWidgetsHeight,
                             alignedWithActionHeight * 2);
        }

        int titleY = summaryLabelY + summaryLabelHeight;
        int listY = titleY + titleWidgetsHeight;
        int listHeight = heightWithoutKitArea + kitAreaHeight - bottomMargin - listY + 1;

        // list widget widths
        int minWidth = qMax(m_summaryLabel->sizeHint().width(), 250);
        minWidth = qMax(minWidth, m_kitAreaWidget->sizeHint().width());
        if (keepSize) {
            // Do not make the widget smaller then it was before
            int oldTotalListWidgetWidth = m_projectListWidget->isVisibleTo(this) ?
                    m_projectListWidget->width() : 0;
            for (int i = TARGET; i < LAST; ++i)
                oldTotalListWidgetWidth += m_listWidgets[i]->width();
            minWidth = qMax(minWidth, oldTotalListWidgetWidth);
        }

        QVector<int> widths = listWidgetWidths(minWidth, 1000);
        int x = 0;
        for (int i = PROJECT; i < LAST; ++i) {
            int optimalWidth = widths[i];
            if (i == PROJECT) {
                m_projectListWidget->resize(optimalWidth, listHeight);
                m_projectListWidget->move(x, listY);
            } else {
                m_listWidgets[i]->resize(optimalWidth, listHeight);
                m_listWidgets[i]->move(x, listY);
            }
            m_titleWidgets[i]->resize(optimalWidth, titleWidgetsHeight);
            m_titleWidgets[i]->move(x, titleY);
            x += optimalWidth + 1; //1 extra pixel for the separators or the right border
        }

        m_summaryLabel->resize(x - 1, summaryLabelHeight);
        m_kitAreaWidget->resize(x - 1, kitAreaHeight);
        setFixedSize(x, heightWithoutKitArea + kitAreaHeight);
    } else {
        if (keepSize)
            heightWithoutKitArea = height() - oldSummaryLabelY + 1;
        else
            heightWithoutKitArea = qMax(summaryLabelHeight + bottomMargin, alignedWithActionHeight);
        m_summaryLabel->resize(m_summaryLabel->sizeHint().width(), heightWithoutKitArea - bottomMargin);
        m_kitAreaWidget->resize(m_kitAreaWidget->sizeHint());
        setFixedSize(m_summaryLabel->width() + 1, heightWithoutKitArea + kitAreaHeight); //1 extra pixel for the border
    }

    QPoint moveTo = statusBar->mapToGlobal(QPoint(0, 0));
    moveTo -= QPoint(0, height());
    move(moveTo);
}

void MiniProjectTargetSelector::projectAdded(Project *project)
{
    connect(project, &Project::addedProjectConfiguration,
            this, &MiniProjectTargetSelector::handleNewProjectConfiguration);
    connect(project, &Project::addedTarget,
            this, &MiniProjectTargetSelector::handleNewTarget);

    connect(project, &Project::removedProjectConfiguration,
            this, &MiniProjectTargetSelector::handleRemovalOfProjectConfiguration);
    connect(project, &Project::removedTarget,
            this, &MiniProjectTargetSelector::handleRemovalOfTarget);

    foreach (Target *t, project->targets())
        addedTarget(t);

    updateProjectListVisible();
    updateTargetListVisible();
    updateBuildListVisible();
    updateDeployListVisible();
    updateRunListVisible();
}

void MiniProjectTargetSelector::projectRemoved(Project *project)
{
    disconnect(project, &Project::addedProjectConfiguration,
               this, &MiniProjectTargetSelector::handleNewProjectConfiguration);
    disconnect(project, &Project::addedTarget,
               this, &MiniProjectTargetSelector::handleNewTarget);

    disconnect(project, &Project::removedProjectConfiguration,
               this, &MiniProjectTargetSelector::handleRemovalOfProjectConfiguration);
    disconnect(project, &Project::removedTarget,
               this, &MiniProjectTargetSelector::handleRemovalOfTarget);

    foreach (Target *t, project->targets())
        removedTarget(t);

    updateProjectListVisible();
    updateTargetListVisible();
    updateBuildListVisible();
    updateDeployListVisible();
    updateRunListVisible();
}

void MiniProjectTargetSelector::handleNewTarget(Target *target)
{
    addedTarget(target);
    updateTargetListVisible();
    updateBuildListVisible();
    updateDeployListVisible();
    updateRunListVisible();
}

void MiniProjectTargetSelector::handleNewProjectConfiguration(ProjectConfiguration *pc)
{
    if (auto bc = qobject_cast<BuildConfiguration *>(pc)) {
        if (addedBuildConfiguration(bc))
            updateBuildListVisible();
        return;
    }
    if (auto dc = qobject_cast<DeployConfiguration *>(pc)) {
        if (addedDeployConfiguration(dc))
            updateDeployListVisible();
        return;
    }
    if (auto rc = qobject_cast<RunConfiguration *>(pc)) {
        if (addedRunConfiguration(rc))
            updateRunListVisible();
        return;
    }
}

void MiniProjectTargetSelector::handleRemovalOfTarget(Target *target)
{
    removedTarget(target);

    updateTargetListVisible();
    updateBuildListVisible();
    updateDeployListVisible();
    updateRunListVisible();
}

void MiniProjectTargetSelector::handleRemovalOfProjectConfiguration(ProjectConfiguration *pc)
{
    if (auto bc = qobject_cast<BuildConfiguration *>(pc)) {
        if (removedBuildConfiguration(bc))
            updateBuildListVisible();
        return;
    }
    if (auto dc = qobject_cast<DeployConfiguration *>(pc)) {
        if (removedDeployConfiguration(dc))
            updateDeployListVisible();
        return;
    }
    if (auto rc = qobject_cast<RunConfiguration *>(pc)) {
        if (removedRunConfiguration(rc))
            updateRunListVisible();
        return;
    }
}

void MiniProjectTargetSelector::addedTarget(Target *target)
{
    if (target->project() != m_project)
        return;

    m_listWidgets[TARGET]->addProjectConfiguration(target);

    foreach (BuildConfiguration *bc, target->buildConfigurations())
        addedBuildConfiguration(bc);
    foreach (DeployConfiguration *dc, target->deployConfigurations())
        addedDeployConfiguration(dc);
    foreach (RunConfiguration *rc, target->runConfigurations())
        addedRunConfiguration(rc);
}

void MiniProjectTargetSelector::removedTarget(Target *target)
{
    if (target->project() != m_project)
        return;

    m_listWidgets[TARGET]->removeProjectConfiguration(target);

    foreach (BuildConfiguration *bc, target->buildConfigurations())
        removedBuildConfiguration(bc);
    foreach (DeployConfiguration *dc, target->deployConfigurations())
        removedDeployConfiguration(dc);
    foreach (RunConfiguration *rc, target->runConfigurations())
        removedRunConfiguration(rc);
}

bool MiniProjectTargetSelector::addedBuildConfiguration(BuildConfiguration *bc)
{
    if (bc->target() != m_project->activeTarget())
        return false;

    m_listWidgets[BUILD]->addProjectConfiguration(bc);
    return true;
}

bool MiniProjectTargetSelector::removedBuildConfiguration(BuildConfiguration *bc)
{
    if (bc->target() != m_project->activeTarget())
        return false;

    m_listWidgets[BUILD]->removeProjectConfiguration(bc);
    return true;
}

bool MiniProjectTargetSelector::addedDeployConfiguration(DeployConfiguration *dc)
{
    if (!m_project || dc->target() != m_project->activeTarget())
        return false;

    m_listWidgets[DEPLOY]->addProjectConfiguration(dc);
    return true;
}

bool MiniProjectTargetSelector::removedDeployConfiguration(DeployConfiguration *dc)
{
    if (!m_project || dc->target() != m_project->activeTarget())
        return false;

    m_listWidgets[DEPLOY]->removeProjectConfiguration(dc);
    return true;
}
bool MiniProjectTargetSelector::addedRunConfiguration(RunConfiguration *rc)
{
    if (!m_project || rc->target() != m_project->activeTarget())
        return false;

    m_listWidgets[RUN]->addProjectConfiguration(rc);
    return true;
}

bool MiniProjectTargetSelector::removedRunConfiguration(RunConfiguration *rc)
{
    if (!m_project || rc->target() != m_project->activeTarget())
        return false;

    m_listWidgets[RUN]->removeProjectConfiguration(rc);
    return true;
}

void MiniProjectTargetSelector::updateProjectListVisible()
{
    int count = SessionManager::projects().size();
    bool visible = count > 1;

    m_projectListWidget->setVisible(visible);
    m_projectListWidget->setMaxCount(count);
    m_titleWidgets[PROJECT]->setVisible(visible);

    updateSummary();
}

void MiniProjectTargetSelector::updateTargetListVisible()
{
    int maxCount = 0;
    for (Project *p : SessionManager::projects())
        maxCount = qMax(p->targets().size(), maxCount);

    bool visible = maxCount > 1;
    m_listWidgets[TARGET]->setVisible(visible);
    m_listWidgets[TARGET]->setMaxCount(maxCount);
    m_titleWidgets[TARGET]->setVisible(visible);
    updateSummary();
}

void MiniProjectTargetSelector::updateBuildListVisible()
{
    int maxCount = 0;
    for (Project *p : SessionManager::projects())
        foreach (Target *t, p->targets())
            maxCount = qMax(t->buildConfigurations().size(), maxCount);

    bool visible = maxCount > 1;
    m_listWidgets[BUILD]->setVisible(visible);
    m_listWidgets[BUILD]->setMaxCount(maxCount);
    m_titleWidgets[BUILD]->setVisible(visible);
    updateSummary();
}

void MiniProjectTargetSelector::updateDeployListVisible()
{
    int maxCount = 0;
    for (Project *p : SessionManager::projects())
        foreach (Target *t, p->targets())
            maxCount = qMax(t->deployConfigurations().size(), maxCount);

    bool visible = maxCount > 1;
    m_listWidgets[DEPLOY]->setVisible(visible);
    m_listWidgets[DEPLOY]->setMaxCount(maxCount);
    m_titleWidgets[DEPLOY]->setVisible(visible);
    updateSummary();
}

void MiniProjectTargetSelector::updateRunListVisible()
{
    int maxCount = 0;
    for (Project *p : SessionManager::projects())
        foreach (Target *t, p->targets())
            maxCount = qMax(t->runConfigurations().size(), maxCount);

    bool visible = maxCount > 1;
    m_listWidgets[RUN]->setVisible(visible);
    m_listWidgets[RUN]->setMaxCount(maxCount);
    m_titleWidgets[RUN]->setVisible(visible);
    updateSummary();
}

void MiniProjectTargetSelector::changeStartupProject(Project *project)
{
    if (m_project) {
        disconnect(m_project, &Project::activeTargetChanged,
                   this, &MiniProjectTargetSelector::activeTargetChanged);
    }
    m_project = project;
    if (m_project) {
        connect(m_project, &Project::activeTargetChanged,
                this, &MiniProjectTargetSelector::activeTargetChanged);
        activeTargetChanged(m_project->activeTarget());
    } else {
        activeTargetChanged(nullptr);
    }

    if (project) {
        QList<QObject *> list;
        foreach (Target *t, project->targets())
            list.append(t);
        m_listWidgets[TARGET]->setProjectConfigurations(list, project->activeTarget());
    } else {
        m_listWidgets[TARGET]->setProjectConfigurations(QList<QObject *>(), nullptr);
    }

    updateActionAndSummary();
}

void MiniProjectTargetSelector::activeTargetChanged(Target *target)
{
    if (m_target) {
        disconnect(m_target, &Target::kitChanged,
                   this, &MiniProjectTargetSelector::updateActionAndSummary);
        disconnect(m_target, &Target::iconChanged,
                   this, &MiniProjectTargetSelector::updateActionAndSummary);
        disconnect(m_target, &Target::activeBuildConfigurationChanged,
                   this, &MiniProjectTargetSelector::activeBuildConfigurationChanged);
        disconnect(m_target, &Target::activeDeployConfigurationChanged,
                   this, &MiniProjectTargetSelector::activeDeployConfigurationChanged);
        disconnect(m_target, &Target::activeRunConfigurationChanged,
                   this, &MiniProjectTargetSelector::activeRunConfigurationChanged);
    }

    m_target = target;

    m_kitAreaWidget->setKit(m_target ? m_target->kit() : nullptr);

    m_listWidgets[TARGET]->setActiveProjectConfiguration(m_target);

    if (m_buildConfiguration)
        disconnect(m_buildConfiguration, &ProjectConfiguration::displayNameChanged,
                   this, &MiniProjectTargetSelector::updateActionAndSummary);
    if (m_deployConfiguration)
        disconnect(m_deployConfiguration, &ProjectConfiguration::displayNameChanged,
                   this, &MiniProjectTargetSelector::updateActionAndSummary);

    if (m_runConfiguration)
        disconnect(m_runConfiguration, &ProjectConfiguration::displayNameChanged,
                   this, &MiniProjectTargetSelector::updateActionAndSummary);

    if (m_target) {
        QList<QObject *> bl;
        foreach (BuildConfiguration *bc, target->buildConfigurations())
            bl.append(bc);
        m_listWidgets[BUILD]->setProjectConfigurations(bl, target->activeBuildConfiguration());

        QList<QObject *> dl;
        foreach (DeployConfiguration *dc, target->deployConfigurations())
            dl.append(dc);
        m_listWidgets[DEPLOY]->setProjectConfigurations(dl, target->activeDeployConfiguration());

        QList<QObject *> rl;
        foreach (RunConfiguration *rc, target->runConfigurations())
            rl.append(rc);
        m_listWidgets[RUN]->setProjectConfigurations(rl, target->activeRunConfiguration());

        m_buildConfiguration = m_target->activeBuildConfiguration();
        if (m_buildConfiguration)
            connect(m_buildConfiguration, &ProjectConfiguration::displayNameChanged,
                    this, &MiniProjectTargetSelector::updateActionAndSummary);
        m_deployConfiguration = m_target->activeDeployConfiguration();
        if (m_deployConfiguration)
            connect(m_deployConfiguration, &ProjectConfiguration::displayNameChanged,
                    this, &MiniProjectTargetSelector::updateActionAndSummary);
        m_runConfiguration = m_target->activeRunConfiguration();
        if (m_runConfiguration)
            connect(m_runConfiguration, &ProjectConfiguration::displayNameChanged,
                    this, &MiniProjectTargetSelector::updateActionAndSummary);

        connect(m_target, &Target::kitChanged,
                this, &MiniProjectTargetSelector::updateActionAndSummary);
        connect(m_target, &Target::iconChanged,
                this, &MiniProjectTargetSelector::updateActionAndSummary);
        connect(m_target, &Target::activeBuildConfigurationChanged,
                this, &MiniProjectTargetSelector::activeBuildConfigurationChanged);
        connect(m_target, &Target::activeDeployConfigurationChanged,
                this, &MiniProjectTargetSelector::activeDeployConfigurationChanged);
        connect(m_target, &Target::activeRunConfigurationChanged,
                this, &MiniProjectTargetSelector::activeRunConfigurationChanged);
    } else {
        m_listWidgets[BUILD]->setProjectConfigurations(QList<QObject *>(), nullptr);
        m_listWidgets[DEPLOY]->setProjectConfigurations(QList<QObject *>(), nullptr);
        m_listWidgets[RUN]->setProjectConfigurations(QList<QObject *>(), nullptr);
        m_buildConfiguration = nullptr;
        m_deployConfiguration = nullptr;
        m_runConfiguration = nullptr;
    }
    updateActionAndSummary();
}

void MiniProjectTargetSelector::kitChanged(Kit *k)
{
    if (m_target && m_target->kit() == k)
        updateActionAndSummary();
}

void MiniProjectTargetSelector::activeBuildConfigurationChanged(BuildConfiguration *bc)
{
    if (m_buildConfiguration)
        disconnect(m_buildConfiguration, &ProjectConfiguration::displayNameChanged,
                   this, &MiniProjectTargetSelector::updateActionAndSummary);
    m_buildConfiguration = bc;
    if (m_buildConfiguration)
        connect(m_buildConfiguration, &ProjectConfiguration::displayNameChanged,
                this, &MiniProjectTargetSelector::updateActionAndSummary);
    m_listWidgets[BUILD]->setActiveProjectConfiguration(bc);
    updateActionAndSummary();
}

void MiniProjectTargetSelector::activeDeployConfigurationChanged(DeployConfiguration *dc)
{
    if (m_deployConfiguration)
        disconnect(m_deployConfiguration, &ProjectConfiguration::displayNameChanged,
                   this, &MiniProjectTargetSelector::updateActionAndSummary);
    m_deployConfiguration = dc;
    if (m_deployConfiguration)
        connect(m_deployConfiguration, &ProjectConfiguration::displayNameChanged,
                this, &MiniProjectTargetSelector::updateActionAndSummary);
    m_listWidgets[DEPLOY]->setActiveProjectConfiguration(dc);
    updateActionAndSummary();
}

void MiniProjectTargetSelector::activeRunConfigurationChanged(RunConfiguration *rc)
{
    if (m_runConfiguration)
        disconnect(m_runConfiguration, &ProjectConfiguration::displayNameChanged,
                   this, &MiniProjectTargetSelector::updateActionAndSummary);
    m_runConfiguration = rc;
    if (m_runConfiguration)
        connect(m_runConfiguration, &ProjectConfiguration::displayNameChanged,
                this, &MiniProjectTargetSelector::updateActionAndSummary);
    m_listWidgets[RUN]->setActiveProjectConfiguration(rc);
    updateActionAndSummary();
}

void MiniProjectTargetSelector::setVisible(bool visible)
{
    doLayout(false);
    QWidget::setVisible(visible);
    m_projectAction->setChecked(visible);
    if (visible) {
        if (!focusWidget() || !focusWidget()->isVisibleTo(this)) { // Does the second part actually work?
            if (m_projectListWidget->isVisibleTo(this))
                m_projectListWidget->setFocus();
            for (int i = TARGET; i < LAST; ++i) {
                if (m_listWidgets[i]->isVisibleTo(this)) {
                    m_listWidgets[i]->setFocus();
                    break;
                }
            }
        }
    }
}

void MiniProjectTargetSelector::toggleVisible()
{
    setVisible(!isVisible());
}

void MiniProjectTargetSelector::nextOrShow()
{
    if (!isVisible()) {
        show();
    } else {
        m_hideOnRelease = true;
        m_earliestHidetime = QDateTime::currentDateTime().addMSecs(800);
        if (auto *lw = qobject_cast<ListWidget *>(focusWidget())) {
            if (lw->currentRow() < lw->count() -1)
                lw->setCurrentRow(lw->currentRow() + 1);
            else
                lw->setCurrentRow(0);
        }
    }
}

void MiniProjectTargetSelector::keyPressEvent(QKeyEvent *ke)
{
    if (ke->key() == Qt::Key_Return
            || ke->key() == Qt::Key_Enter
            || ke->key() == Qt::Key_Space
            || ke->key() == Qt::Key_Escape) {
        hide();
    } else {
        QWidget::keyPressEvent(ke);
    }
}

void MiniProjectTargetSelector::keyReleaseEvent(QKeyEvent *ke)
{
    if (m_hideOnRelease) {
        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))) {
            delayedHide();
            m_hideOnRelease = false;
        }
    }
    if (ke->key() == Qt::Key_Return
            || ke->key() == Qt::Key_Enter
            || ke->key() == Qt::Key_Space
            || ke->key() == Qt::Key_Escape)
        return;
    QWidget::keyReleaseEvent(ke);
}

void MiniProjectTargetSelector::delayedHide()
{
    QDateTime current = QDateTime::currentDateTime();
    if (m_earliestHidetime > current) {
        // schedule for later
        QTimer::singleShot(current.msecsTo(m_earliestHidetime) + 50, this, &MiniProjectTargetSelector::delayedHide);
    } else {
        hide();
    }
}

// This is a workaround for the problem that Windows
// will let the mouse events through when you click
// outside a popup to close it. This causes the popup
// to open on mouse release if you hit the button, which
//
//
// A similar case can be found in QComboBox
void MiniProjectTargetSelector::mousePressEvent(QMouseEvent *e)
{
    setAttribute(Qt::WA_NoMouseReplay);
    QWidget::mousePressEvent(e);
}

void MiniProjectTargetSelector::updateActionAndSummary()
{
    QString projectName = QLatin1String(" ");
    QString fileName; // contains the path if projectName is not unique
    QString targetName;
    QString targetToolTipText;
    QString buildConfig;
    QString deployConfig;
    QString runConfig;
    QIcon targetIcon = creatorTheme()->flag(Theme::FlatSideBarIcons)
            ? Icons::DESKTOP_DEVICE.icon()
            : style()->standardIcon(QStyle::SP_ComputerIcon);

    Project *project = SessionManager::startupProject();
    if (project) {
        projectName = project->displayName();
        for (Project *p : SessionManager::projects()) {
            if (p != project && p->displayName() == projectName) {
                fileName = project->projectFilePath().toUserOutput();
                break;
            }
        }

        if (Target *target = project->activeTarget()) {
            targetName = project->activeTarget()->displayName();

            if (BuildConfiguration *bc = target->activeBuildConfiguration())
                buildConfig = bc->displayName();

            if (DeployConfiguration *dc = target->activeDeployConfiguration())
                deployConfig = dc->displayName();

            if (RunConfiguration *rc = target->activeRunConfiguration())
                runConfig = rc->displayName();

            targetToolTipText = target->overlayIconToolTip();
            targetIcon = createCenteredIcon(target->icon(), target->overlayIcon());
        }
    }
    m_projectAction->setProperty("heading", projectName);
    if (project && project->needsConfiguration())
        m_projectAction->setProperty("subtitle", tr("Unconfigured"));
    else
        m_projectAction->setProperty("subtitle", buildConfig);
    m_projectAction->setIcon(targetIcon);
    QStringList lines;
    lines << tr("<b>Project:</b> %1").arg(projectName);
    if (!fileName.isEmpty())
        lines << tr("<b>Path:</b> %1").arg(fileName);
    if (!targetName.isEmpty())
        lines << tr("<b>Kit:</b> %1").arg(targetName);
    if (!buildConfig.isEmpty())
        lines << tr("<b>Build:</b> %1").arg(buildConfig);
    if (!deployConfig.isEmpty())
        lines << tr("<b>Deploy:</b> %1").arg(deployConfig);
    if (!runConfig.isEmpty())
        lines << tr("<b>Run:</b> %1").arg(runConfig);
    if (!targetToolTipText.isEmpty())
        lines << tr("%1").arg(targetToolTipText);
    QString toolTip = QString("<html><nobr>%1</html>")
            .arg(lines.join(QLatin1String("<br/>")));
    m_projectAction->setToolTip(toolTip);
    updateSummary();
}

void MiniProjectTargetSelector::updateSummary()
{
    QString summary;
    if (Project *startupProject = SessionManager::startupProject()) {
        if (!m_projectListWidget->isVisibleTo(this))
            summary.append(tr("Project: <b>%1</b><br/>").arg(startupProject->displayName()));
        if (Target *activeTarget = startupProject->activeTarget()) {
            if (!m_listWidgets[TARGET]->isVisibleTo(this))
                summary.append(tr("Kit: <b>%1</b><br/>").arg( activeTarget->displayName()));
            if (!m_listWidgets[BUILD]->isVisibleTo(this) && activeTarget->activeBuildConfiguration())
                summary.append(tr("Build: <b>%1</b><br/>").arg(
                                   activeTarget->activeBuildConfiguration()->displayName()));
            if (!m_listWidgets[DEPLOY]->isVisibleTo(this) && activeTarget->activeDeployConfiguration())
                summary.append(tr("Deploy: <b>%1</b><br/>").arg(
                                   activeTarget->activeDeployConfiguration()->displayName()));
            if (!m_listWidgets[RUN]->isVisibleTo(this) && activeTarget->activeRunConfiguration())
                summary.append(tr("Run: <b>%1</b><br/>").arg(
                                   activeTarget->activeRunConfiguration()->displayName()));
        } else if (startupProject->needsConfiguration()) {
            summary = tr("<style type=text/css>"
                         "a:link {color: rgb(128, 128, 255, 240);}</style>"
                         "The project <b>%1</b> is not yet configured<br/><br/>"
                         "You can configure it in the <a href=\"projectmode\">Projects mode</a><br/>")
                    .arg(startupProject->displayName());
        } else {
            if (!m_listWidgets[TARGET]->isVisibleTo(this))
                summary.append(QLatin1String("<br/>"));
            if (!m_listWidgets[BUILD]->isVisibleTo(this))
                summary.append(QLatin1String("<br/>"));
            if (!m_listWidgets[DEPLOY]->isVisibleTo(this))
                summary.append(QLatin1String("<br/>"));
            if (!m_listWidgets[RUN]->isVisibleTo(this))
                summary.append(QLatin1String("<br/>"));
        }
    }
    m_summaryLabel->setText(summary);
}

void MiniProjectTargetSelector::paintEvent(QPaintEvent *)
{
    QPainter painter(this);
    painter.setBrush(creatorTheme()->color(Theme::MiniProjectTargetSelectorBackgroundColor));
    painter.drawRect(rect());
    painter.setPen(creatorTheme()->color(Theme::MiniProjectTargetSelectorBorderColor));
    // draw border on top and right
    QRectF borderRect = QRectF(rect()).adjusted(0.5, 0.5, -0.5, -0.5);
    painter.drawLine(borderRect.topLeft(), borderRect.topRight());
    painter.drawLine(borderRect.topRight(), borderRect.bottomRight());
    if (creatorTheme()->flag(Theme::DrawTargetSelectorBottom)) {
        // draw thicker border on the bottom
        QRect bottomRect(0, rect().height() - 8, rect().width(), 8);
        static const QImage image(":/projectexplorer/images/targetpanel_bottom.png");
        StyleHelper::drawCornerImage(image, &painter, bottomRect, 1, 1, 1, 1);
    }
}

void MiniProjectTargetSelector::switchToProjectsMode()
{
    Core::ModeManager::activateMode(Constants::MODE_SESSION);
    hide();
}
