From bbd402fcffcaafbfff4629fc155aacc1566f1143 Mon Sep 17 00:00:00 2001
From: Francisco Ryan Tolmasky I <francisco@280north.com>
Date: Tue, 20 Apr 2010 23:51:18 -0700
Subject: [PATCH] Partial fix for HTML5 drag and drop with collection views.

Reviewed by me.
---
 AppKit/CPCollectionView.j | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/AppKit/CPCollectionView.j b/AppKit/CPCollectionView.j
index cf91c32cd..10c017f23 100644
--- a/AppKit/CPCollectionView.j
+++ b/AppKit/CPCollectionView.j
@@ -590,6 +590,14 @@
 
 - (void)mouseDragged:(CPEvent)anEvent
 {
+    var locationInWindow = [anEvent locationInWindow],
+        mouseDownLocationInWindow = [_mouseDownEvent locationInWindow];
+
+    // FIXME: This is because Safari's drag hysteresis is 3px x 3px
+    if ((ABS(locationInWindow.x - mouseDownLocationInWindow.x) < 3) &&
+        (ABS(locationInWindow.y - mouseDownLocationInWindow.y) < 3))
+        return;
+
     if (![_delegate respondsToSelector:@selector(collectionView:dragTypesForItemsAtIndexes:)])
         return;