From dec97dfa65a1d4cb27fe166e07a4783746127327 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Va=CC=81clav=20Slavi=CC=81k?= <vaclav@slavik.io>
Date: Thu, 6 Oct 2016 17:33:49 +0200
Subject: [PATCH] OS X: Implement support wxCOL_REORDERABLE

wxDataViewCtrl were always reorderable in wxOSX, regardless of the
presence of wxCOL_REORDERABLE. Fix in the code to respect per-column
flag in a somewhat hacky, but recommended by Apple, way of making this
setting, which is normally global for the entire control, apply to
individual columns.
---
 src/osx/cocoa/dataview.mm | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/src/osx/cocoa/dataview.mm b/src/osx/cocoa/dataview.mm
index 427945316c..ce010ba232 100644
--- a/src/osx/cocoa/dataview.mm
+++ b/src/osx/cocoa/dataview.mm
@@ -1697,6 +1697,15 @@ outlineView:(NSOutlineView*)outlineView
     }
 }
 
+-(void) outlineView:(NSOutlineView *)outlineView mouseDownInHeaderOfTableColumn:(NSTableColumn *)tableColumn
+{
+    // Implements per-column reordering in NSTableView per Apple's Q&A:
+    // https://developer.apple.com/library/content/qa/qa1503/_index.html
+    wxDataViewColumn* const
+        col([static_cast<wxDVCNSTableColumn*>(tableColumn) getColumnPointer]);
+    [outlineView setAllowsColumnReordering:col->IsReorderable()];
+}
+
 -(BOOL) outlineView:(NSOutlineView*)outlineView shouldCollapseItem:(id)item
 {
     wxUnusedVar(outlineView);