File indexing completed on 2024-05-12 05:21:19

 /*
   This file is part of KOrganizer.
 
   SPDX-FileCopyrightText: 2003, 2004 Cornelius Schumacher <schumacher@kde.org>
   SPDX-FileCopyrightText: 2003-2004 Reinhold Kainhofer <reinhold@kainhofer.com>
   SPDX-FileCopyrightText: 2009 Sebastian Sauer <sebsauer@kdab.net>
   SPDX-FileCopyrightText: 2010-2024 Laurent Montel <montel@kde.org>
   SPDX-FileCopyrightText: 2012 Sérgio Martins <iamsergio@gmail.com>
 
   SPDX-License-Identifier: GPL-2.0-or-later WITH Qt-Commercial-exception-1.0
 */
 
 #include "akonadicollectionview.h"
 #include "kocore.h"
 #include "koglobals.h"
 #include "kohelper.h"
 #include "manageshowcollectionproperties.h"
 #include "prefs/koprefs.h"
 #include "views/collectionview/calendardelegate.h"
 #include "views/collectionview/quickview.h"
 
 #include <CalendarSupport/KCalPrefs>
 #include <CalendarSupport/Utils>
 
 #include <Akonadi/AgentFilterProxyModel>
 #include <Akonadi/AgentInstanceCreateJob>
 #include <Akonadi/AgentManager>
 #include <Akonadi/AgentTypeDialog>
 #include <Akonadi/CalendarUtils>
 #include <Akonadi/CollectionDeleteJob>
 #include <Akonadi/CollectionFilterProxyModel>
 #include <Akonadi/CollectionIdentificationAttribute>
 #include <Akonadi/CollectionUtils>
 #include <Akonadi/ETMViewStateSaver>
 #include <Akonadi/EntityDisplayAttribute>
 #include <Akonadi/EntityTreeModel>
 #include <Akonadi/EntityTreeView>
 #include <Akonadi/StandardCalendarActionManager>
 #include <PimCommonAkonadi/MailUtil>
 #include <PimCommonAkonadi/ManageServerSideSubscriptionJob>
 
 #include <KActionCollection>
 #include <KCheckableProxyModel>
 #include <KConfigGroup>
 #include <KMessageBox>
 
 #include "korganizer_debug.h"
 #include <QSortFilterProxyModel>
 
 #include <QAction>
 #include <QColorDialog>
 #include <QHeaderView>
 #include <QLineEdit>
 #include <QStackedWidget>
 #include <QVBoxLayout>
 
 static Akonadi::EntityTreeModel *findEtm(QAbstractItemModel *model)
 {
     QAbstractProxyModel *proxyModel = nullptr;
     while (model) {
         proxyModel = qobject_cast<QAbstractProxyModel *>(model);
         if (proxyModel && proxyModel->sourceModel()) {
             model = proxyModel->sourceModel();
         } else {
             break;
         }
     }
     return qobject_cast<Akonadi::EntityTreeModel *>(model);
 }
 
 /**
  * Automatically checks new calendar entries
  */
 class NewCalendarChecker : public QObject
 {
     Q_OBJECT
 public:
     NewCalendarChecker(QAbstractItemModel *model)
         : QObject(model)
         , mCheckableProxy(model)
     {
         connect(model, &QAbstractItemModel::rowsInserted, this, &NewCalendarChecker::onSourceRowsInserted);
         qRegisterMetaType<QPersistentModelIndex>("QPersistentModelIndex");
     }
 
 private Q_SLOTS:
     void onSourceRowsInserted(const QModelIndex &parent, int start, int end)
     {
         Akonadi::EntityTreeModel *etm = findEtm(mCheckableProxy);
         // Only check new collections and not during initial population
         if (!etm || !etm->isCollectionTreeFetched()) {
             return;
         }
         for (int i = start; i <= end; ++i) {
             qCDebug(KORGANIZER_LOG) << "checking " << i << parent << mCheckableProxy->index(i, 0, parent).data().toString();
             const QModelIndex index = mCheckableProxy->index(i, 0, parent);
             QMetaObject::invokeMethod(this, "setCheckState", Qt::QueuedConnection, Q_ARG(QPersistentModelIndex, index));
         }
     }
 
     void setCheckState(const QPersistentModelIndex &index)
     {
         mCheckableProxy->setData(index, Qt::Checked, Qt::CheckStateRole);
         if (mCheckableProxy->hasChildren(index)) {
             onSourceRowsInserted(index, 0, mCheckableProxy->rowCount(index) - 1);
         }
     }
 
 private:
     QAbstractItemModel *const mCheckableProxy;
 };
 
 /**
  * Handles expansion state of a treeview
  *
  * Persists state, and automatically expands new entries.
  * With expandAll enabled this class simply ensures that all indexes are fully expanded.
  */
 class NewNodeExpander : public QObject
 {
     Q_OBJECT
 public:
     NewNodeExpander(QTreeView *view, bool expandAll, const QString &treeStateConfig)
         : QObject(view)
         , mTreeView(view)
         , mExpandAll(expandAll)
         , mTreeStateConfig(treeStateConfig)
     {
         connect(view->model(), &QAbstractItemModel::rowsInserted, this, &NewNodeExpander::onSourceRowsInserted);
         connect(view->model(), &QAbstractItemModel::layoutChanged, this, &NewNodeExpander::onLayoutChanged);
         connect(view->model(), &QAbstractItemModel::modelReset, this, &NewNodeExpander::onModelReset);
         restoreTreeState();
     }
 
     ~NewNodeExpander() override
     {
         // Ideally we'd automatically save the treestate of the parent view here,
         // but that unfortunately doesn't seem to work
     }
 
 public Q_SLOTS:
     void saveState()
     {
         saveTreeState();
     }
 
 private Q_SLOTS:
     void onSourceRowsInserted(const QModelIndex &parent, int start, int end)
     {
         // The initial expansion is handled by the state saver
         if (!mExpandAll) {
             Akonadi::EntityTreeModel *etm = findEtm(mTreeView->model());
             if (!etm || !etm->isCollectionTreeFetched()) {
                 restoreTreeState();
                 return;
             }
         }
         for (int i = start; i <= end; ++i) {
             const QModelIndex index = mTreeView->model()->index(i, 0, parent);
             // qCDebug(KORGANIZER_LOG) << "expanding " << index.data().toString();
             mTreeView->expand(index);
             if (mTreeView->model()->hasChildren(index)) {
                 onSourceRowsInserted(index, 0, mTreeView->model()->rowCount(index) - 1);
             }
         }
     }
 
     void onLayoutChanged()
     {
         if (mExpandAll) {
             onSourceRowsInserted(QModelIndex(), 0, mTreeView->model()->rowCount(QModelIndex()) - 1);
         }
     }
 
     void onModelReset()
     {
         if (mExpandAll) {
             onSourceRowsInserted(QModelIndex(), 0, mTreeView->model()->rowCount(QModelIndex()) - 1);
         }
     }
 
 private:
     void saveTreeState()
     {
         Akonadi::ETMViewStateSaver treeStateSaver;
         KSharedConfig::Ptr config = KSharedConfig::openConfig();
         KConfigGroup group = config->group(mTreeStateConfig);
         treeStateSaver.setView(mTreeView);
         treeStateSaver.setSelectionModel(nullptr); // we only save expand state
         treeStateSaver.saveState(group);
     }
 
     void restoreTreeState()
     {
         if (mTreeStateConfig.isEmpty()) {
             return;
         }
         // Otherwise ETMViewStateSaver crashes
         if (!findEtm(mTreeView->model())) {
             return;
         }
         if (treeStateRestorer) { // We don't need more than one to be running at the same time
             delete treeStateRestorer;
         }
         qCDebug(KORGANIZER_LOG) << "Restore tree state";
         treeStateRestorer = new Akonadi::ETMViewStateSaver(); // not a leak
         KConfigGroup group(KSharedConfig::openConfig(), mTreeStateConfig);
         treeStateRestorer->setView(mTreeView);
         treeStateRestorer->setSelectionModel(nullptr); // we only restore expand state
         treeStateRestorer->restoreState(group);
     }
 
     QPointer<Akonadi::ETMViewStateSaver> treeStateRestorer;
     QTreeView *mTreeView = nullptr;
     bool mExpandAll = false;
     QString mTreeStateConfig;
 };
 
 AkonadiCollectionViewFactory::AkonadiCollectionViewFactory(CalendarView *view)
     : mView(view)
     , mAkonadiCollectionView(nullptr)
 {
 }
 
 static bool hasCompatibleMimeTypes(const Akonadi::Collection &collection)
 {
     static QStringList goodMimeTypes;
 
     if (goodMimeTypes.isEmpty()) {
         goodMimeTypes << QStringLiteral("text/calendar") << KCalendarCore::Event::eventMimeType() << KCalendarCore::Todo::todoMimeType()
                       << KCalendarCore::Journal::journalMimeType();
     }
 
     for (int i = 0; i < goodMimeTypes.count(); ++i) {
         if (collection.contentMimeTypes().contains(goodMimeTypes.at(i))) {
             return true;
         }
     }
 
     return false;
 }
 
 namespace
 {
 class ColorProxyModel : public QSortFilterProxyModel
 {
 public:
     explicit ColorProxyModel(QObject *parent = nullptr)
         : QSortFilterProxyModel(parent)
         , mInitDefaultCalendar(false)
     {
     }
 
     QVariant data(const QModelIndex &index, int role) const override
     {
         if (!index.isValid()) {
             return {};
         }
         if (role == Qt::DecorationRole) {
             const Akonadi::Collection collection = Akonadi::CollectionUtils::fromIndex(index);
 
             if (hasCompatibleMimeTypes(collection)) {
                 if (collection.hasAttribute<Akonadi::EntityDisplayAttribute>()
                     && !collection.attribute<Akonadi::EntityDisplayAttribute>()->iconName().isEmpty()) {
                     return collection.attribute<Akonadi::EntityDisplayAttribute>()->icon();
                 }
             }
         } else if (role == Qt::FontRole) {
             const Akonadi::Collection collection = Akonadi::CollectionUtils::fromIndex(index);
             if (!collection.contentMimeTypes().isEmpty() && KOHelper::isStandardCalendar(collection.id())
                 && collection.rights() & Akonadi::Collection::CanCreateItem) {
                 auto font = qvariant_cast<QFont>(QSortFilterProxyModel::data(index, Qt::FontRole));
                 font.setBold(true);
                 if (!mInitDefaultCalendar) {
                     mInitDefaultCalendar = true;
                     CalendarSupport::KCalPrefs::instance()->setDefaultCalendarId(collection.id());
                 }
                 return font;
             }
         } else if (role == Qt::DisplayRole) {
             const Akonadi::Collection collection = Akonadi::CollectionUtils::fromIndex(index);
             const Akonadi::Collection::Id colId = collection.id();
             const Akonadi::AgentInstance instance = Akonadi::AgentManager::self()->instance(collection.resource());
             if (!instance.isOnline() && !collection.isVirtual()) {
                 return i18nc("@item this is the default calendar", "%1 (Offline)", collection.displayName());
             }
             if (colId == CalendarSupport::KCalPrefs::instance()->defaultCalendarId()) {
                 return i18nc("@item this is the default calendar", "%1 (Default)", collection.displayName());
             }
         }
 
         return QSortFilterProxyModel::data(index, role);
     }
 
     Qt::ItemFlags flags(const QModelIndex &index) const override
     {
         return Qt::ItemIsSelectable | QSortFilterProxyModel::flags(index);
     }
 
 private:
     mutable bool mInitDefaultCalendar;
 };
 
 class CollectionFilter : public QSortFilterProxyModel
 {
 public:
     explicit CollectionFilter(QObject *parent = nullptr)
         : QSortFilterProxyModel(parent)
     {
         setDynamicSortFilter(true);
     }
 
 protected:
     [[nodiscard]] bool filterAcceptsRow(int row, const QModelIndex &sourceParent) const override
     {
         const QModelIndex sourceIndex = sourceModel()->index(row, 0, sourceParent);
         Q_ASSERT(sourceIndex.isValid());
 
         const Akonadi::Collection &col = sourceIndex.data(Akonadi::EntityTreeModel::CollectionRole).value<Akonadi::Collection>();
         const auto attr = col.attribute<Akonadi::CollectionIdentificationAttribute>();
 
         // We filter the user folders because we insert person nodes for user folders.
         if ((attr && attr->collectionNamespace().startsWith("usertoplevel")) || col.name().contains(QLatin1StringView("Other Users"))) {
             return false;
         }
         return true;
     }
 
     [[nodiscard]] QVariant data(const QModelIndex &index, int role = Qt::DisplayRole) const override
     {
         if (role == Qt::ToolTipRole) {
             const Akonadi::Collection col = Akonadi::CollectionUtils::fromIndex(index);
             return CalendarSupport::toolTipString(col);
         }
 
         return QSortFilterProxyModel::data(index, role);
     };
 };
 
 class CalendarDelegateModel : public QSortFilterProxyModel
 {
 public:
     explicit CalendarDelegateModel(QObject *parent = nullptr)
         : QSortFilterProxyModel(parent)
     {
     }
 
 protected:
     [[nodiscard]] bool checkChildren(const QModelIndex &index, int role, const QVariant &value) const
     {
         const QModelIndex sourceIndex = mapToSource(index);
         for (int i = 0; i < sourceModel()->rowCount(sourceIndex); ++i) {
             const QModelIndex child = sourceModel()->index(i, 0, sourceIndex);
             if (child.data(role) != value) {
                 return false;
             }
         }
         return true;
     }
 
     void setChildren(const QModelIndex &sourceIndex, const QVariant &value, int role) const
     {
         if (!sourceIndex.isValid()) {
             return;
         }
         for (int i = 0; i < sourceModel()->rowCount(sourceIndex); ++i) {
             const QModelIndex child = sourceModel()->index(i, 0, sourceIndex);
             sourceModel()->setData(child, value, role);
             setChildren(child, value, role);
         }
     }
 };
 }
 
 CalendarViewExtension *AkonadiCollectionViewFactory::create(QWidget *parent)
 {
     mAkonadiCollectionView = new AkonadiCollectionView(view(), true, parent);
     QObject::connect(mAkonadiCollectionView, &AkonadiCollectionView::collectionEnabled, mView, &CalendarView::collectionSelected);
     QObject::connect(mAkonadiCollectionView, &AkonadiCollectionView::collectionDisabled, mView, &CalendarView::collectionDeselected);
     QObject::connect(mAkonadiCollectionView, &AkonadiCollectionView::resourcesChanged, mView, &CalendarView::resourcesChanged);
     return mAkonadiCollectionView;
 }
 
 CalendarView *AkonadiCollectionViewFactory::view() const
 {
     return mView;
 }
 
 AkonadiCollectionView *AkonadiCollectionViewFactory::collectionView() const
 {
     return mAkonadiCollectionView;
 }
 
 AkonadiCollectionView::AkonadiCollectionView(CalendarView *view, bool hasContextMenu, QWidget *parent)
     : CalendarViewExtension(parent)
     , mCalendarView(view)
     , mHasContextMenu(hasContextMenu)
 {
     mManagerShowCollectionProperties = new ManageShowCollectionProperties(this, this);
 
     auto topLayout = new QVBoxLayout(this);
     topLayout->setContentsMargins({});
 
     auto searchCol = new QLineEdit(this);
     searchCol->setToolTip(i18nc("@info:tooltip", "Set search keyword"));
     searchCol->setWhatsThis(i18nc("@info:whatsthis", "Lets you search for a keyword in your calendars"));
     searchCol->setClearButtonEnabled(true);
     searchCol->setPlaceholderText(
         i18nc("@info/plain Displayed grayed-out inside the "
               "textbox, verb to search",
               "Search..."));
     topLayout->addWidget(searchCol);
 
     auto colorProxy = new ColorProxyModel(this);
     colorProxy->setObjectName(QLatin1StringView("Show calendar colors"));
     colorProxy->setDynamicSortFilter(true);
     mBaseModel = colorProxy;
 
     auto calendarDelegateModel = new CalendarDelegateModel(this);
     calendarDelegateModel->setSourceModel(mBaseModel);
 
     // Hide collections that are not required
     auto collectionFilter = new CollectionFilter(this);
     collectionFilter->setSourceModel(calendarDelegateModel);
 
     // Filter tree view.
     auto searchProxy = new ReparentingModel(this);
     searchProxy->setSourceModel(collectionFilter);
     searchProxy->setObjectName(QLatin1StringView("searchProxy"));
 
     auto filterTreeViewModel = new QSortFilterProxyModel(this);
     filterTreeViewModel->setFilterCaseSensitivity(Qt::CaseInsensitive);
     filterTreeViewModel->setRecursiveFilteringEnabled(true);
     filterTreeViewModel->setDynamicSortFilter(true);
     filterTreeViewModel->setSourceModel(searchProxy);
     connect(searchCol, &QLineEdit::textChanged, filterTreeViewModel, &QSortFilterProxyModel::setFilterWildcard);
 
     mCollectionView = new Akonadi::EntityTreeView(this);
     mCollectionView->header()->hide();
     mCollectionView->setRootIsDecorated(true);
     // mCollectionView->setSorting( true );
     {
         auto delegate = new StyledCalendarDelegate(mCollectionView);
         connect(delegate, &StyledCalendarDelegate::action, this, &AkonadiCollectionView::onAction);
         mCollectionView->setItemDelegate(delegate);
     }
     mCollectionView->setModel(filterTreeViewModel);
     connect(mCollectionView->selectionModel(), &QItemSelectionModel::selectionChanged, this, &AkonadiCollectionView::updateMenu);
     mNewNodeExpander = new NewNodeExpander(mCollectionView, false, QStringLiteral("CollectionTreeView"));
 
     topLayout->addWidget(mCollectionView);
 
     connect(mBaseModel, &QAbstractProxyModel::rowsInserted, this, &AkonadiCollectionView::rowsInserted);
 
     KXMLGUIClient *xmlclient = KOCore::self()->xmlguiClient(view);
     if (xmlclient) {
         mCollectionView->setXmlGuiClient(xmlclient);
 
         mActionManager = new Akonadi::StandardCalendarActionManager(xmlclient->actionCollection(), mCollectionView);
 
         QList<Akonadi::StandardActionManager::Type> standardActions;
         standardActions << Akonadi::StandardActionManager::CreateCollection << Akonadi::StandardActionManager::DeleteCollections
                         << Akonadi::StandardActionManager::SynchronizeCollections << Akonadi::StandardActionManager::CollectionProperties
                         << Akonadi::StandardActionManager::CopyItems << Akonadi::StandardActionManager::Paste << Akonadi::StandardActionManager::DeleteItems
                         << Akonadi::StandardActionManager::CutItems << Akonadi::StandardActionManager::CreateResource
                         << Akonadi::StandardActionManager::DeleteResources << Akonadi::StandardActionManager::ResourceProperties
                         << Akonadi::StandardActionManager::SynchronizeResources << Akonadi::StandardActionManager::SynchronizeCollectionTree
                         << Akonadi::StandardActionManager::CopyCollectionToMenu << Akonadi::StandardActionManager::MoveCollectionToMenu;
 
         for (Akonadi::StandardActionManager::Type standardAction : std::as_const(standardActions)) {
             mActionManager->createAction(standardAction);
         }
 
         QList<Akonadi::StandardCalendarActionManager::Type> calendarActions;
         calendarActions << Akonadi::StandardCalendarActionManager::CreateEvent << Akonadi::StandardCalendarActionManager::CreateTodo
                         << Akonadi::StandardCalendarActionManager::CreateSubTodo << Akonadi::StandardCalendarActionManager::CreateJournal
                         << Akonadi::StandardCalendarActionManager::EditIncidence;
 
         for (Akonadi::StandardCalendarActionManager::Type calendarAction : std::as_const(calendarActions)) {
             mActionManager->createAction(calendarAction);
         }
 
         mActionManager->setCollectionSelectionModel(mCollectionView->selectionModel());
 
         mActionManager->interceptAction(Akonadi::StandardActionManager::CreateResource);
         mActionManager->interceptAction(Akonadi::StandardActionManager::DeleteResources);
         mActionManager->interceptAction(Akonadi::StandardActionManager::DeleteCollections);
 
         connect(mActionManager->action(Akonadi::StandardActionManager::CreateResource), &QAction::triggered, this, &AkonadiCollectionView::newCalendar);
         connect(mActionManager->action(Akonadi::StandardActionManager::DeleteResources), &QAction::triggered, this, &AkonadiCollectionView::deleteCalendar);
         connect(mActionManager->action(Akonadi::StandardActionManager::DeleteCollections), &QAction::triggered, this, &AkonadiCollectionView::deleteCalendar);
 
         mActionManager->setContextText(Akonadi::StandardActionManager::CollectionProperties,
                                        Akonadi::StandardActionManager::DialogTitle,
                                        ki18nc("@title:window", "Properties of Calendar Folder %1"));
 
         mActionManager->action(Akonadi::StandardActionManager::CreateCollection)
             ->setProperty("ContentMimeTypes", QStringList() << Akonadi::Collection::mimeType() << KCalendarCore::Event::eventMimeType());
 
         mActionManager->interceptAction(Akonadi::StandardActionManager::CollectionProperties);
         connect(mActionManager->action(Akonadi::StandardActionManager::CollectionProperties),
                 &QAction::triggered,
                 mManagerShowCollectionProperties,
                 &ManageShowCollectionProperties::showCollectionProperties);
 
         mAssignColor = new QAction(mCollectionView);
         mAssignColor->setText(i18nc("@action:inmenu", "&Set Folder Color..."));
         mAssignColor->setEnabled(false);
         xmlclient->actionCollection()->addAction(QStringLiteral("assign_color"), mAssignColor);
         connect(mAssignColor, &QAction::triggered, this, &AkonadiCollectionView::assignColor);
 
         mDefaultCalendar = new QAction(mCollectionView);
         mDefaultCalendar->setText(i18nc("@action:inmenu", "Set as &Default Folder"));
         mDefaultCalendar->setEnabled(false);
         xmlclient->actionCollection()->addAction(QStringLiteral("set_standard_calendar"), mDefaultCalendar);
         connect(mDefaultCalendar, &QAction::triggered, this, &AkonadiCollectionView::setDefaultCalendar);
 
         mServerSideSubscription =
             new QAction(QIcon::fromTheme(QStringLiteral("folder-bookmarks")), i18nc("@action:inmenu", "Serverside Subscription..."), this);
         xmlclient->actionCollection()->addAction(QStringLiteral("serverside_subscription"), mServerSideSubscription);
         connect(mServerSideSubscription, &QAction::triggered, this, &AkonadiCollectionView::slotServerSideSubscription);
     }
 }
 
 AkonadiCollectionView::~AkonadiCollectionView()
 {
     // Need this because it seems impossible to detect in the NodeExpander when to save the state
     // before the view is deleted.
     mNewNodeExpander->saveState();
 }
 
 void AkonadiCollectionView::slotServerSideSubscription()
 {
     const QModelIndex index = mCollectionView->selectionModel()->currentIndex(); // selectedRows()
     Q_ASSERT(index.isValid());
     const Akonadi::Collection collection = Akonadi::CollectionUtils::fromIndex(index);
     if (!collection.isValid()) {
         return;
     }
     auto job = new PimCommon::ManageServerSideSubscriptionJob(this);
     job->setCurrentCollection(collection);
     job->setParentWidget(this);
     job->start();
 }
 
 Akonadi::Collection AkonadiCollectionView::currentCalendar() const
 {
     const QModelIndex index = mCollectionView->selectionModel()->currentIndex(); // selectedRows()
     Q_ASSERT(index.isValid());
     Akonadi::Collection collection = Akonadi::CollectionUtils::fromIndex(index);
     return collection;
 }
 
 void AkonadiCollectionView::setDefaultCalendar()
 {
     QModelIndex index = mCollectionView->selectionModel()->currentIndex(); // selectedRows()
     Q_ASSERT(index.isValid());
     const Akonadi::Collection collection = Akonadi::CollectionUtils::fromIndex(index);
 
     // Ask if they really want to do this
     const Akonadi::Collection curCol(CalendarSupport::KCalPrefs::instance()->defaultCalendarId());
     if (curCol.isValid()
         && KMessageBox::warningContinueCancel(this,
                                               i18nc("@info", "Do you really want replace your current default calendar with \"%1\"?", collection.displayName()),
                                               i18nc("@title:window", "Replace Default Calendar?"))
             != KMessageBox::Continue) {
         return;
     }
 
     CalendarSupport::KCalPrefs::instance()->setDefaultCalendarId(collection.id());
     CalendarSupport::KCalPrefs::instance()->usrSave();
     updateMenu();
     updateView();
 
     Q_EMIT defaultResourceChanged(collection);
 }
 
 void AkonadiCollectionView::assignColor()
 {
     QModelIndex index = mCollectionView->selectionModel()->currentIndex(); // selectedRows()
     Q_ASSERT(index.isValid());
     const Akonadi::Collection collection = Akonadi::CollectionUtils::fromIndex(index);
     Q_ASSERT(collection.isValid());
 
     const QColor defaultColor = KOHelper::resourceColor(collection);
     QColor myColor;
     myColor = QColorDialog::getColor(defaultColor);
     if (myColor.isValid() && myColor != defaultColor) {
         KOHelper::setResourceColor(collection, myColor);
         Q_EMIT colorsChanged();
         updateMenu();
         updateView();
     }
 }
 
 void AkonadiCollectionView::setCollectionSelectionProxyModel(KCheckableProxyModel *m)
 {
     if (mSelectionProxyModel == m) {
         return;
     }
 
     m->selectionModel()->disconnect(this);
 
     mSelectionProxyModel = m;
     if (!mSelectionProxyModel) {
         return;
     }
 
     new NewCalendarChecker(m);
     mBaseModel->setSourceModel(mSelectionProxyModel);
 
     connect(m->selectionModel(), &QItemSelectionModel::selectionChanged, this, &AkonadiCollectionView::selectionChanged);
 }
 
 KCheckableProxyModel *AkonadiCollectionView::collectionSelectionProxyModel() const
 {
     return mSelectionProxyModel;
 }
 
 void AkonadiCollectionView::selectionChanged(const QItemSelection &selected, const QItemSelection &deselected)
 {
     bool changed = false;
 
     for (const auto &index : selected.indexes()) {
         if (!index.isValid()) {
             continue;
         }
 
         const auto col = index.data(Akonadi::EntityTreeModel::CollectionRole).value<Akonadi::Collection>();
         if (col.isValid()) {
             Q_EMIT collectionEnabled(col);
             changed |= true;
         }
     }
 
     for (const auto &index : deselected.indexes()) {
         if (!index.isValid()) {
             continue;
         }
 
         const auto col = index.data(Akonadi::EntityTreeModel::CollectionRole).value<Akonadi::Collection>();
         if (col.isValid()) {
             Q_EMIT collectionDisabled(col);
             changed |= true;
         }
     }
 
     if (changed) {
         Q_EMIT resourcesChanged(true);
     }
 }
 
 Akonadi::EntityTreeView *AkonadiCollectionView::view() const
 {
     return mCollectionView;
 }
 
 void AkonadiCollectionView::updateView()
 {
     Q_EMIT resourcesChanged(mSelectionProxyModel ? mSelectionProxyModel->selectionModel()->hasSelection() : false);
 }
 
 void AkonadiCollectionView::updateMenu()
 {
     if (!mHasContextMenu) {
         return;
     }
     bool enableAction = mCollectionView->selectionModel()->hasSelection();
     enableAction = enableAction && (KOPrefs::instance()->agendaViewColors() != KOPrefs::CategoryOnly);
     mAssignColor->setEnabled(enableAction);
     QModelIndex index = mCollectionView->selectionModel()->currentIndex(); // selectedRows()
 
     bool disableStuff = true;
 
     if (index.isValid()) {
         // Returns an invalid collection on person nodes
         const Akonadi::Collection collection = Akonadi::CollectionUtils::fromIndex(index);
 
         if (collection.isValid() && !collection.contentMimeTypes().isEmpty()) {
             if (collection.remoteId() == QLatin1StringView("akonadi_birthdays_resource")) {
                 mAssignColor->setEnabled(false);
             }
 
             mDefaultCalendar->setEnabled(!KOHelper::isStandardCalendar(collection.id()) && (collection.rights() & Akonadi::Collection::CanCreateItem)
                                          && !collection.isVirtual() && collection.contentMimeTypes().contains(KCalendarCore::Event::eventMimeType()));
             disableStuff = false;
         }
         bool isOnline;
         mServerSideSubscription->setEnabled(PimCommon::MailUtil::isImapFolder(collection, isOnline));
     } else {
         mServerSideSubscription->setEnabled(false);
     }
     if (disableStuff) {
         mDefaultCalendar->setEnabled(false);
         mAssignColor->setEnabled(false);
     }
 }
 
 void AkonadiCollectionView::newCalendar()
 {
     QPointer<Akonadi::AgentTypeDialog> dlg = new Akonadi::AgentTypeDialog(this);
     dlg->setWindowTitle(i18nc("@title:window", "Add Calendar"));
     dlg->agentFilterProxyModel()->addMimeTypeFilter(QStringLiteral("text/calendar"));
     dlg->agentFilterProxyModel()->addCapabilityFilter(QStringLiteral("Resource")); // show only resources, no agents
     if (dlg->exec()) {
         mNotSendAddRemoveSignal = true;
         const Akonadi::AgentType agentType = dlg->agentType();
         if (agentType.isValid()) {
             auto job = new Akonadi::AgentInstanceCreateJob(agentType, this);
             job->configure(this);
             connect(job, &Akonadi::AgentInstanceCreateJob::result, this, &AkonadiCollectionView::newCalendarDone);
             job->start();
         }
     }
     delete dlg;
 }
 
 void AkonadiCollectionView::newCalendarDone(KJob *job)
 {
     auto createjob = static_cast<Akonadi::AgentInstanceCreateJob *>(job);
     if (createjob->error()) {
         // TODO(AKONADI_PORT)
         // this should show an error dialog and should be merged
         // with the identical code in ActionManager
         qCWarning(KORGANIZER_LOG) << "Create calendar failed:" << createjob->errorString();
         mNotSendAddRemoveSignal = false;
         return;
     }
     mNotSendAddRemoveSignal = false;
     // TODO
 }
 
 void AkonadiCollectionView::deleteCalendar()
 {
     QModelIndex index = mCollectionView->selectionModel()->currentIndex(); // selectedRows()
     Q_ASSERT(index.isValid());
     const Akonadi::Collection collection = Akonadi::CollectionUtils::fromIndex(index);
     Q_ASSERT(collection.isValid());
 
     const QString displayname = index.model()->data(index, Qt::DisplayRole).toString();
     Q_ASSERT(!displayname.isEmpty());
 
     if (KMessageBox::warningContinueCancel(this,
                                            i18nc("@info", "Do you really want to delete calendar %1?", displayname),
                                            i18nc("@title:window", "Delete Calendar"),
                                            KStandardGuiItem::del(),
                                            KStandardGuiItem::cancel(),
                                            QString(),
                                            KMessageBox::Dangerous)
         == KMessageBox::Continue) {
         bool isTopLevel = collection.parentCollection() == Akonadi::Collection::root();
 
         mNotSendAddRemoveSignal = true;
         mWasDefaultCalendar = KOHelper::isStandardCalendar(collection.id());
 
         if (!isTopLevel) {
             // deletes contents
             auto job = new Akonadi::CollectionDeleteJob(collection, this);
             connect(job, &Akonadi::AgentInstanceCreateJob::result, this, &AkonadiCollectionView::deleteCalendarDone);
         } else {
             // deletes the agent, not the contents
             const Akonadi::AgentInstance instance = Akonadi::AgentManager::self()->instance(collection.resource());
             if (instance.isValid()) {
                 Akonadi::AgentManager::self()->removeInstance(instance);
             }
         }
     }
 }
 
 void AkonadiCollectionView::deleteCalendarDone(KJob *job)
 {
     auto deletejob = static_cast<Akonadi::CollectionDeleteJob *>(job);
     if (deletejob->error()) {
         qCWarning(KORGANIZER_LOG) << "Delete calendar failed:" << deletejob->errorString();
         mNotSendAddRemoveSignal = false;
         return;
     }
     if (mWasDefaultCalendar) {
         CalendarSupport::KCalPrefs::instance()->setDefaultCalendarId(Akonadi::Collection().id());
     }
     mNotSendAddRemoveSignal = false;
     // TODO
 }
 
 void AkonadiCollectionView::rowsInserted(const QModelIndex &, int, int)
 {
     if (!mNotSendAddRemoveSignal) {
         Q_EMIT resourcesAddedRemoved();
     }
 }
 
 Akonadi::Collection AkonadiCollectionView::selectedCollection() const
 {
     Akonadi::Collection collection;
     QItemSelectionModel *selectionModel = mCollectionView->selectionModel();
     if (!selectionModel) {
         return collection;
     }
     QModelIndexList indexes = selectionModel->selectedIndexes();
     if (!indexes.isEmpty()) {
         collection = indexes.first().data(Akonadi::EntityTreeModel::CollectionRole).value<Akonadi::Collection>();
     }
     return collection;
 }
 
 Akonadi::Collection::List AkonadiCollectionView::checkedCollections() const
 {
     Akonadi::Collection::List collections;
     if (!mSelectionProxyModel) {
         return collections;
     }
     QItemSelectionModel *selectionModel = mSelectionProxyModel->selectionModel();
     if (!selectionModel) {
         return collections;
     }
     const QModelIndexList indexes = selectionModel->selectedIndexes();
     for (const QModelIndex &index : indexes) {
         if (index.isValid()) {
             const auto collection = index.data(Akonadi::EntityTreeModel::CollectionRole).value<Akonadi::Collection>();
             if (collection.isValid()) {
                 collections << collection;
             }
         }
     }
     return collections;
 }
 
 bool AkonadiCollectionView::isChecked(const Akonadi::Collection &collection) const
 {
     if (!mSelectionProxyModel) {
         return false;
     }
     QItemSelectionModel *selectionModel = mSelectionProxyModel->selectionModel();
     if (!selectionModel) {
         return false;
     }
     const QModelIndexList indexes = selectionModel->selectedIndexes();
     for (const QModelIndex &index : indexes) {
         if (index.isValid()) {
             const auto c = index.data(Akonadi::EntityTreeModel::CollectionRole).value<Akonadi::Collection>();
             if (c.id() == collection.id()) {
                 return true;
             }
         }
     }
     return false;
 }
 
 Akonadi::EntityTreeModel *AkonadiCollectionView::entityTreeModel() const
 {
     auto *etm = findEtm(mCollectionView->model());
     if (!etm) {
         qCWarning(KORGANIZER_LOG) << "Couldn't find EntityTreeModel";
     }
     return etm;
 }
 
 void AkonadiCollectionView::onAction(const QModelIndex &index, int a)
 {
     const auto action = static_cast<StyledCalendarDelegate::Action>(a);
     switch (action) {
     case StyledCalendarDelegate::Quickview: {
         const auto collection = Akonadi::CollectionUtils::fromIndex(index);
         const auto title = Akonadi::CalendarUtils::displayName(entityTreeModel(), collection);
         auto quickview = new Quickview(mCalendarView->calendarForCollection(collection), title);
         quickview->setAttribute(Qt::WA_DeleteOnClose, true);
         quickview->show();
         break;
     }
     case StyledCalendarDelegate::Total:
         // TODO: anything to implement here?
         break;
     }
 }
 
 #include "akonadicollectionview.moc"
 
 #include "moc_akonadicollectionview.cpp"