From 334be268bf75b863f7c912ae28bab46f7bbc325a Mon Sep 17 00:00:00 2001
From: Aqua-sama <aqua@iserlohn-fortress.net>
Date: Sun, 4 Feb 2018 17:27:58 +0100
Subject: Bookmarks drag and drop

---
 lib/bookmarks/bookmarksmodel.cpp | 75 +++++++++++++++++++++++++++++++++-------
 1 file changed, 62 insertions(+), 13 deletions(-)

(limited to 'lib/bookmarks/bookmarksmodel.cpp')

diff --git a/lib/bookmarks/bookmarksmodel.cpp b/lib/bookmarks/bookmarksmodel.cpp
index 418d456..ba537ba 100644
--- a/lib/bookmarks/bookmarksmodel.cpp
+++ b/lib/bookmarks/bookmarksmodel.cpp
@@ -7,6 +7,8 @@
  */
 
 #include "bookmarksmodel.h"
+#include <QMimeData>
+#include <QBuffer>
 
 BookmarksModel::BookmarksModel(QStyle *style, QObject *parent)
     : QAbstractItemModel(parent)
@@ -166,10 +168,10 @@ Qt::ItemFlags BookmarksModel::flags(const QModelIndex &index) const
     case BookmarkItem::Root:
         break;
     case BookmarkItem::Folder:
-        flags |= Qt::ItemIsEditable;
+        flags |= Qt::ItemIsEditable | Qt::ItemIsDragEnabled | Qt::ItemIsDropEnabled;
         break;
     case BookmarkItem::Bookmark:
-        flags |= Qt::ItemIsEnabled | Qt::ItemNeverHasChildren;
+        flags |= Qt::ItemIsEnabled | Qt::ItemNeverHasChildren | Qt::ItemIsDragEnabled;
         break;
     }
     return flags;
@@ -253,19 +255,18 @@ bool BookmarksModel::setData(const QModelIndex &index, const QVariant &value, in
 
     case BookmarkItem::Bookmark:
         if(role == TitleRole && (node->title != value.toString())) {
-                node->title = value.toString();
-                modified = true;
-                emit dataChanged(this->index(node, 0), this->index(node, 1));
-                //emit dataChanged(index, index);
-                return true;
+            node->title = value.toString();
+            modified = true;
+            emit dataChanged(this->index(node, 0), this->index(node, 1));
+            //emit dataChanged(index, index);
+            return true;
 
         } else if(role == OpenUrlRole && (node->href != value.toString())) {
-                node->href = value.toString();
-                modified = true;
-                emit dataChanged(this->index(node, 0), this->index(node, 1));
-                //emit dataChanged(index, index);
-                return true;
-
+            node->href = value.toString();
+            modified = true;
+            emit dataChanged(this->index(node, 0), this->index(node, 1));
+            //emit dataChanged(index, index);
+            return true;
         }
         return false;
     }
@@ -327,3 +328,51 @@ void BookmarksModel::expandItems(QTreeView *view, BookmarkItem *root)
         }
     }
 }
+QMimeData *BookmarksModel::mimeData(const QModelIndexList &indexes) const
+{
+    auto *qMimeData = new QMimeData();
+    QByteArray data;
+
+    for(const QModelIndex &idx : indexes) {
+        if(idx.column() != 0 || !idx.isValid())
+            continue;
+
+        QByteArray encodedData;
+        QBuffer buffer(&encodedData);
+        buffer.open(QBuffer::ReadWrite);
+        Xbel writer(&buffer);
+        writer.write(static_cast<BookmarkItem *>(idx.internalPointer()));
+
+        data.append(encodedData);
+    }
+
+    qMimeData->setData(mimeTypes().first(), data);
+
+    return qMimeData;
+}
+
+bool BookmarksModel::dropMimeData(const QMimeData *data, Qt::DropAction action, int row, int column, const QModelIndex &parent)
+{
+    if(action == Qt::IgnoreAction)
+        return true;
+
+    // invalid format or column
+    if(!data->hasFormat(mimeTypes().first()) || column > 0)
+        return false;
+
+    QByteArray bytes = data->data(mimeTypes().first());
+
+    QBuffer buffer(&bytes);
+    buffer.open(QIODevice::ReadOnly);
+
+    Xbel reader(&buffer);
+    auto *parentItem = static_cast<BookmarkItem *>(parent.internalPointer());
+    Q_CHECK_PTR(parentItem);
+
+    beginInsertRows(parent, parentItem->row(), parentItem->row());
+    reader.read(parentItem);
+    endInsertRows();
+
+    modified = true;
+    return true;
+}
-- 
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