qt-creator/src/plugins/cppeditor/cppminimizableinfobars.cpp

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** Copyright (C) 2017 The Qt Company Ltd.
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#include "cppminimizableinfobars.h"

#include "cppeditorconstants.h"
#include "cpptoolssettings.h"

#include <QToolButton>

#include <utils/infobar.h>
#include <utils/qtcassert.h>
#include <utils/utilsicons.h>

using namespace Utils;

namespace CppEditor {
namespace Internal {

static CppToolsSettings *settings() { return CppToolsSettings::instance(); }

MinimizableInfoBars::MinimizableInfoBars(InfoBar &infoBar, QObject *parent)
    : QObject(parent)
    , m_infoBar(infoBar)
{
    connect(settings(), &CppToolsSettings::showNoProjectInfoBarChanged,
            this, &MinimizableInfoBars::updateNoProjectConfiguration);
}

MinimizableInfoBars::Actions MinimizableInfoBars::createShowInfoBarActions(
        const ActionCreator &actionCreator)
{
    Actions result;
    QTC_ASSERT(actionCreator, return result);

    // No project configuration available
    auto *button = new QToolButton();
    button->setToolTip(tr("File is not part of any project."));
    button->setIcon(Utils::Icons::WARNING_TOOLBAR.pixmap());
    connect(button, &QAbstractButton::clicked, []() {
        settings()->setShowNoProjectInfoBar(true);
    });
    QAction *action = actionCreator(button);
    action->setVisible(!settings()->showNoProjectInfoBar());
    result.insert(Constants::NO_PROJECT_CONFIGURATION, action);

    return result;
}

void MinimizableInfoBars::processHasProjectPart(bool hasProjectPart)
{
    m_hasProjectPart = hasProjectPart;
    updateNoProjectConfiguration();
}

void MinimizableInfoBars::updateNoProjectConfiguration()
{
    const Id id(Constants::NO_PROJECT_CONFIGURATION);
    m_infoBar.removeInfo(id);

    bool show = false;
    if (!m_hasProjectPart) {
        if (settings()->showNoProjectInfoBar())
            addNoProjectConfigurationEntry(id);
        else
            show = true;
    }

    emit showAction(id, show);
}

static InfoBarEntry createMinimizableInfo(const Id &id,
                                          const QString &text,
                                          std::function<void()> minimizer)
{
    QTC_CHECK(minimizer);

    InfoBarEntry info(id, text);
    info.removeCancelButton();
    // The minimizer() might delete the "Minimize" button immediately and as
    // result invalid reads will happen in QToolButton::mouseReleaseEvent().
    // Avoid this by running the minimizer in the next event loop iteration.
    info.addCustomButton(MinimizableInfoBars::tr("Minimize"), [minimizer] {
        QMetaObject::invokeMethod(settings(), [minimizer] { minimizer(); }, Qt::QueuedConnection);
    });

    return info;
}

void MinimizableInfoBars::addNoProjectConfigurationEntry(const Id &id)
{
    const QString text = tr("<b>Warning</b>: This file is not part of any project. "
                            "The code model might have issues parsing this file properly.");

    m_infoBar.addInfo(createMinimizableInfo(id, text, []() {
        settings()->setShowNoProjectInfoBar(false);
    }));
}

} // namespace Internal
} // namespace CppEditor