From 25e646e9b638f381f1de6c766c0bf38854df8f5d Mon Sep 17 00:00:00 2001
From: Frank Reininghaus <frank78ac@googlemail.com>
Date: Wed, 30 Apr 2014 09:34:32 +0200
Subject: [PATCH] Update the "Paste" action only if it is necessary

Updating this action is only required if the clipboard contents change,
or if the "is writable" state of the current location changes. In all
other cases, an update of this action should be prevented because it
can be very expensive if many files are in the clipboard.

In particular, the update when the selection changes could make
changing the current item in the view very slow.

BUG: 333903
REVIEW: 117782
FIXED-IN: 4.13.1
---
 dolphin/src/dolphinmainwindow.cpp | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/dolphin/src/dolphinmainwindow.cpp b/dolphin/src/dolphinmainwindow.cpp
index 28169cfb59..7117c09bad 100644
--- a/dolphin/src/dolphinmainwindow.cpp
+++ b/dolphin/src/dolphinmainwindow.cpp
@@ -217,6 +217,7 @@ DolphinMainWindow::DolphinMainWindow() :
         toggleSplitView();
     }
     updateEditActions();
+    updatePasteAction();
     updateViewActions();
     updateGoActions();
 
@@ -356,6 +357,7 @@ void DolphinMainWindow::changeUrl(const KUrl& url)
     if (view) {
         view->setUrl(url);
         updateEditActions();
+        updatePasteAction();
         updateViewActions();
         updateGoActions();
         setUrlAsCaption(url);
@@ -1455,6 +1457,7 @@ void DolphinMainWindow::setActiveViewContainer(DolphinViewContainer* viewContain
 
     updateHistory();
     updateEditActions();
+    updatePasteAction();
     updateViewActions();
     updateGoActions();
 
@@ -1817,7 +1820,6 @@ void DolphinMainWindow::updateEditActions()
         deleteWithTrashShortcut->setEnabled(capabilities.supportsDeleting() && !enableMoveToTrash);
         cutAction->setEnabled(capabilities.supportsMoving());
     }
-    updatePasteAction();
 }
 
 void DolphinMainWindow::updateViewActions()