File indexing completed on 2024-04-28 15:39:50

 // SPDX-FileCopyrightText: 2003-2022 Jesper K. Pedersen <blackie@kde.org>
 //
 // SPDX-License-Identifier: GPL-2.0-or-later
 
 #include "DragableTreeWidget.h"
 
 #include "CheckDropItem.h"
 
 #include <DB/Category.h>
 
 #include <QDragMoveEvent>
 
 CategoryListView::DragableTreeWidget::DragableTreeWidget(const DB::CategoryPtr &category, QWidget *parent)
     : QTreeWidget(parent)
     , m_category(category)
 {
     setDragEnabled(true);
     setDragDropMode(DragDrop);
     viewport()->setAcceptDrops(true);
     setDropIndicatorShown(true);
     setSelectionMode(ExtendedSelection);
 }
 
 DB::CategoryPtr CategoryListView::DragableTreeWidget::category() const
 {
     return m_category;
 }
 
 void CategoryListView::DragableTreeWidget::emitItemsChanged()
 {
     Q_EMIT itemsChanged();
 }
 
 QMimeData *CategoryListView::DragableTreeWidget::mimeData(const QList<QTreeWidgetItem *> items) const
 {
     CategoryListView::DragItemInfoSet selected;
     for (QTreeWidgetItem *item : items) {
         QTreeWidgetItem *parent = item->parent();
         QString parentText = parent ? parent->text(0) : QString();
         selected.insert(CategoryListView::DragItemInfo(parentText, item->text(0)));
     }
 
     QByteArray data;
     QDataStream stream(&data, QIODevice::WriteOnly);
     stream << selected;
 
     QMimeData *mime = new QMimeData;
     mime->setData(QString::fromUtf8("x-kphotoalbum/x-categorydrag"), data);
     return mime;
 }
 
 QStringList CategoryListView::DragableTreeWidget::mimeTypes() const
 {
     return QStringList(QString::fromUtf8("x-kphotoalbum/x-categorydrag"));
 }
 
 bool CategoryListView::DragableTreeWidget::dropMimeData(QTreeWidgetItem *parent, int, const QMimeData *data, Qt::DropAction)
 {
     CheckDropItem *targetItem = static_cast<CheckDropItem *>(parent);
     if (targetItem == nullptr) {
         // This can happen when an item is dropped between two other items and not
         // onto an item, which leads to a crash when calling dataDropped(data).
         return false;
     } else {
         return targetItem->dataDropped(data);
     }
 }
 
 void CategoryListView::DragableTreeWidget::dragMoveEvent(QDragMoveEvent *event)
 {
     // Call super class in any case as it may scroll, which we want even if we reject
     QTreeWidget::dragMoveEvent(event);
 
     if (event->source() != this)
         event->ignore();
 
     QTreeWidgetItem *item = itemAt(event->pos());
     if (item && static_cast<CheckDropItem *>(item)->isSelfDrop(event->mimeData()))
         event->ignore();
 }
 
 // vi:expandtab:tabstop=4 shiftwidth=4:
 
 #include "moc_DragableTreeWidget.cpp"