X-Git-Url: https://gitweb.stoutner.com/?a=blobdiff_plain;f=src%2Fwidgets%2FDraggableTreeView.cpp;fp=src%2Fwidgets%2FDraggableTreeView.cpp;h=1fa07a56498c74bf94d8a69c02bc83ec815ee26e;hb=f18185adbdce9891be0cbd2197838441aaa5ed3e;hp=0000000000000000000000000000000000000000;hpb=7c6edb3608791950c6146ac242e2b6f493ca8e8c;p=PrivacyBrowserPC.git

diff --git a/src/widgets/DraggableTreeView.cpp b/src/widgets/DraggableTreeView.cpp
new file mode 100644
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+++ b/src/widgets/DraggableTreeView.cpp
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+/*
+ * Copyright 2023 Soren Stoutner <soren@stoutner.com>.
+ *
+ * This file is part of Privacy Browser PC <https://www.stoutner.com/privacy-browser-pc>.
+ *
+ * Privacy Browser PC is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * Privacy Browser PC is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with Privacy Browser PC.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+// Application headers.
+#include "DraggableTreeView.h"
+#include "databases/BookmarksDatabase.h"
+#include "dialogs/BookmarksDialog.h"
+
+// Qt toolkit headers.
+#include <QDebug>
+#include <QDropEvent>
+#include <QList>
+
+// Construct the class.
+DraggableTreeView::DraggableTreeView(QWidget *parentWidget) : QTreeView(parentWidget) {}
+
+// Handle drop events.
+void DraggableTreeView::dropEvent(QDropEvent *dropEvent)
+{
+    // Get the list of currently selected items that are moving.
+    QList<QModelIndex> indexesMovingList = selectedIndexes();
+
+    // Create a list of database IDs that are moving.
+    QList<int> *databaseIdsMovingListPointer = new QList<int>;
+
+    // Populate the list of moving database IDs.
+    for (const QModelIndex &modelIndex : indexesMovingList)
+    {
+        // Only process model indexes from the bookmark name column (by default, there will be model indexes from all the visible columns in the list).
+        if (modelIndex.column() == BookmarksDialog::BOOKMARK_NAME_COLUMN)
+            databaseIdsMovingListPointer->append(modelIndex.siblingAtColumn(BookmarksDialog::DATABASE_ID_COLUMN).data().toInt());
+    }
+
+    // Get the drop position.
+    int dropPosition = dropIndicatorPosition();
+
+    // Get the drop model index.
+    QModelIndex dropModelIndex = indexAt(dropEvent->pos());
+
+    // Get the drop display order.
+    int dropDisplayOrder = dropModelIndex.siblingAtColumn(BookmarksDialog::DISPLAY_ORDER).data().toInt();
+
+    // Process the move according to the drop position.
+    switch (dropPosition)
+    {
+        case QAbstractItemView::OnItem:
+            // TODO  Implement for moving into a folder.
+            break;
+
+        case QAbstractItemView::AboveItem:
+        {
+            // Get a list of all the bookmarks except those selected.
+            QList<BookmarkStruct> *bookmarksExceptSelectedListPointer = BookmarksDatabase::getBookmarksExcept(databaseIdsMovingListPointer);
+
+            // Initialize a new display order tracker.
+            int newDisplayOrder = 0;
+
+            // Move the bookmarks.
+            for (const BookmarkStruct &bookmarkStruct : *bookmarksExceptSelectedListPointer)
+            {
+                // Check to see if this is the drop display order.
+                if (bookmarkStruct.displayOrder == dropDisplayOrder)
+                {
+                    // Add all of the bookmarks being moved to this point.
+                    for (const int databaseId : *databaseIdsMovingListPointer)
+                    {
+                        // Update the display order for each bookmark.
+                        BookmarksDatabase::updateDisplayOrder(databaseId, newDisplayOrder);
+
+                        // Increment the new display order.
+                        ++newDisplayOrder;
+                    }
+                }
+
+                // Set the bookmark's display order if it has changed.
+                if (bookmarkStruct.displayOrder != newDisplayOrder)
+                    BookmarksDatabase::updateDisplayOrder(bookmarkStruct.id, newDisplayOrder);
+
+                // Increment the new display order.
+                ++newDisplayOrder;
+            }
+
+            break;
+        }
+
+        case QAbstractItemView::BelowItem:
+        {
+            // Get a list of all the bookmarks except those selected.
+            QList<BookmarkStruct> *bookmarksExceptSelectedListPointer = BookmarksDatabase::getBookmarksExcept(databaseIdsMovingListPointer);
+
+            // Initialize a new display order tracker.
+            int newDisplayOrder = 0;
+
+            // Move the bookmarks.
+            for (const BookmarkStruct &bookmarkStruct : *bookmarksExceptSelectedListPointer)
+            {
+                // Set the bookmark's display order if it has changed.
+                if (bookmarkStruct.displayOrder != newDisplayOrder)
+                    BookmarksDatabase::updateDisplayOrder(bookmarkStruct.id, newDisplayOrder);
+
+                // Increment the new display order.
+                ++newDisplayOrder;
+
+                // Check to see if this is the drop display order.
+                if (bookmarkStruct.displayOrder == dropDisplayOrder)
+                {
+                    // Add all of the bookmarks being moved to this point.
+                    for (const int databaseId : *databaseIdsMovingListPointer)
+                    {
+                        // Update the display order for each bookmark.
+                        BookmarksDatabase::updateDisplayOrder(databaseId, newDisplayOrder);
+
+                        // Increment the new display order.
+                        ++newDisplayOrder;
+                    }
+                }
+            }
+
+            break;
+        }
+
+        case QAbstractItemView::OnViewport:
+
+            // Get a list of all the bookmarks except those selected.
+            QList<BookmarkStruct> *bookmarksExceptSelectedListPointer = BookmarksDatabase::getBookmarksExcept(databaseIdsMovingListPointer);
+
+            // Initialize a new display order tracker.
+            int newDisplayOrder = 0;
+
+            // Move the bookmarks.
+            for (const BookmarkStruct &bookmarkStruct : *bookmarksExceptSelectedListPointer)
+            {
+                // Set the bookmark's display order if it has changed.
+                if (bookmarkStruct.displayOrder != newDisplayOrder)
+                    BookmarksDatabase::updateDisplayOrder(bookmarkStruct.id, newDisplayOrder);
+
+                // Increment the new display order.
+                ++newDisplayOrder;
+            }
+
+            // Add all of the bookmarks being moved to the end of the list.
+            for (const int databaseId : *databaseIdsMovingListPointer)
+            {
+                // Update the display order for each bookmark.
+                BookmarksDatabase::updateDisplayOrder(databaseId, newDisplayOrder);
+
+                // Increment the new display order.
+                ++newDisplayOrder;
+            }
+            break;
+    }
+
+    // Emit the bookmarks moved signal.
+    emit bookmarksMoved();
+}