@@ -15,6 +15,7 @@ extension SafariExtensionViewController: NSTableViewDelegate, NSTableViewDataSou
1515 tableView. delegate = self
1616 tableView. dataSource = self
1717 tableView. menu? . autoenablesItems = true
18+ tableView. registerForDraggedTypes ( [ dragDropType] )
1819 }
1920
2021
@@ -53,4 +54,73 @@ extension SafariExtensionViewController: NSTableViewDelegate, NSTableViewDataSou
5354 @IBAction func tableDoubleClick( _ sender: Any ? ) {
5455 restoreMenuItem ( sender: sender)
5556 }
57+
58+ // MARK: reorder rows
59+
60+ func tableView( _ tableView: NSTableView , pasteboardWriterForRow row: Int ) -> NSPasteboardWriting ? {
61+ let item = NSPasteboardItem ( )
62+ item. setString ( String ( row) , forType: dragDropType)
63+ return item
64+ }
65+
66+ func tableView( _ tableView: NSTableView , validateDrop info: NSDraggingInfo , proposedRow row: Int , proposedDropOperation dropOperation: NSTableView . DropOperation ) -> NSDragOperation {
67+ if dropOperation == . above {
68+ return . move
69+ }
70+ return [ ]
71+ }
72+
73+ func tableView( _ tableView: NSTableView , acceptDrop info: NSDraggingInfo , row: Int , dropOperation: NSTableView . DropOperation ) -> Bool {
74+ let originalRow = Int ( ( info. draggingPasteboard. pasteboardItems? . first!. string ( forType: . string) ) !) ?? - 5
75+ if originalRow == - 5 { return false }
76+
77+ var newRow = row
78+ // When you drag an item downwards, the "new row" index is actually --1. Remember dragging operation is `.above`.
79+ if originalRow < newRow {
80+ newRow = row - 1
81+ }
82+
83+ // Animate the rows
84+ tableView. beginUpdates ( )
85+ tableView. moveRow ( at: originalRow, to: newRow)
86+ tableView. endUpdates ( )
87+
88+ // Persist the ordering by saving your data model
89+ let trackItem = sessions [ originalRow] //saving item
90+ sessions. remove ( at: originalRow) //removing from old position
91+ sessions. insert ( trackItem, at: newRow) //inserting at new pos
92+
93+ return true
94+
95+
96+ /*
97+ var oldIndexes = [Int]()
98+ info.enumerateDraggingItems(options: [], for: tableView, classes: [NSPasteboardItem.self], searchOptions: [:]) { (item, i, pointer) in
99+ if let str = (item.item as! NSPasteboardItem).string(forType: self.dragDropType), let index = Int(str) {
100+ oldIndexes.append(index)
101+ }
102+ }
103+
104+ var oldIndexOffset = 0
105+ var newIndexOffset = 0
106+
107+ // For simplicity, the code below uses `tableView.moveRowAtIndex` to move rows around directly.
108+ // You may want to move rows in your content array and then call `tableView.reloadData()` instead.
109+ tableView.beginUpdates()
110+ for oldIndex in oldIndexes {
111+ if oldIndex < row {
112+ tableView.moveRow(at: oldIndex + oldIndexOffset, to: row - 1)
113+ sessions.swapAt(oldIndex + oldIndexOffset, row - 1)
114+ oldIndexOffset -= 1
115+ } else {
116+ tableView.moveRow(at: oldIndex, to: row + newIndexOffset)
117+ sessions.swapAt(oldIndex, row + newIndexOffset)
118+ newIndexOffset += 1
119+ }
120+ }
121+ tableView.endUpdates()
122+ */
123+ return true
124+ }
125+
56126}
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