Method updateFileButtons

kdevplatform/shell/workingsets/workingsettooltipwidget.cpp:249–328

void WorkingSetToolTipWidget::updateFileButtons()
{
    auto* mainWindow = qobject_cast<MainWindow*>(Core::self()->uiController()->activeMainWindow());
    Q_ASSERT(mainWindow);

    WorkingSetController* controller = Core::self()->workingSetControllerInternal();
    ActiveToolTip* tooltip = controller->tooltip();

    QString activeFile;
    if(mainWindow->area()->activeView())
        activeFile = mainWindow->area()->activeView()->document()->documentSpecifier();

    WorkingSet* currentWorkingSet = nullptr;
    QSet<QString> openFiles;

    if(!mainWindow->area()->workingSet().isEmpty())
    {
        currentWorkingSet = controller->workingSet(mainWindow->area()->workingSet());
        openFiles = currentWorkingSet->fileSet();
    }

    bool allOpen = true;
    bool noneOpen = true;

    bool needResize = false;

    bool allHidden = true;

    for(QMap< QString, FileWidget* >::iterator it = m_fileWidgets.begin(); it != m_fileWidgets.end(); ++it) {
        if(openFiles.contains(it.key())) {
            noneOpen = false;
            (*it)->m_button->setToolTip(i18nc("@info:tooltip", "Remove this file from the current working set"));
            (*it)->m_button->setIcon(QIcon::fromTheme(QStringLiteral("list-remove")));
            (*it)->show();
        }else{
            allOpen = false;
            (*it)->m_button->setToolTip(i18nc("@info:tooltip", "Add this file to the current working set"));
            (*it)->m_button->setIcon(QIcon::fromTheme(QStringLiteral("list-add")));
            if(currentWorkingSet == m_set)
            {
                (*it)->hide();
                needResize = true;
            }
        }


        if(!(*it)->isHidden())
            allHidden = false;

        (*it)->m_label->setIsActiveFile(it.key() == activeFile);
    }

    // NOTE: always hide merge&subtract all on current working set
    // if we want to enable mergeButton, we have to fix it's behavior since it operates directly on the
    // set contents and not on the m_fileWidgets
    m_mergeButton->setHidden(allOpen || currentWorkingSet == m_set);
    m_subtractButton->setHidden(noneOpen || currentWorkingSet == m_set);
    m_deleteButton->setHidden(m_set->hasConnectedAreas());