From 1e8d5236d1661849deee54d7d2ea1e9325f54c0f Mon Sep 17 00:00:00 2001
From: Magne Sjaastad <magne.sjaastad@ceetron.com>
Date: Thu, 21 Mar 2013 11:04:47 +0100
Subject: [PATCH] Disable paste if no available clipboard data p4#: 21025

---
 .../ProjectDataModel/RimUiTreeView.cpp        | 29 +++++++++++++++++--
 .../ProjectDataModel/RimUiTreeView.h          |  5 +++-
 2 files changed, 30 insertions(+), 4 deletions(-)

diff --git a/ApplicationCode/ProjectDataModel/RimUiTreeView.cpp b/ApplicationCode/ProjectDataModel/RimUiTreeView.cpp
index 59b7afd9ce..72ae486ed8 100644
--- a/ApplicationCode/ProjectDataModel/RimUiTreeView.cpp
+++ b/ApplicationCode/ProjectDataModel/RimUiTreeView.cpp
@@ -43,6 +43,9 @@ RimUiTreeView::RimUiTreeView(QWidget *parent /*= 0*/)
     : QTreeView(parent)
 {
     setHeaderHidden(true);
+
+    m_pasteAction = new QAction(QString("Paste"), this);
+    connect(m_pasteAction, SIGNAL(triggered()), SLOT(slotPastePdmObjects()));
 }
 
 //--------------------------------------------------------------------------------------------------
@@ -57,12 +60,15 @@ RimUiTreeView::~RimUiTreeView()
 //--------------------------------------------------------------------------------------------------
 void RimUiTreeView::contextMenuEvent(QContextMenuEvent* event)
 {
+    m_pasteAction->setEnabled(hasClipboardValidData());
+
     RimUiTreeModelPdm* myModel = dynamic_cast<RimUiTreeModelPdm*>(model());
     if (myModel)
     {
         caf::PdmUiTreeItem* uiItem = myModel->getTreeItemFromIndex(currentIndex());
         if (uiItem && uiItem->dataObject())
         {
+
             // Range filters
             if (dynamic_cast<RimReservoirView*>(uiItem->dataObject().p()))
             {
@@ -172,7 +178,7 @@ void RimUiTreeView::contextMenuEvent(QContextMenuEvent* event)
             {
                 QMenu menu;
                 menu.addAction(QString("Copy"), this, SLOT(slotCopyPdmObjectToClipboard()));
-                menu.addAction(QString("Paste"), this, SLOT(slotPastePdmObjects()));
+                menu.addAction(m_pasteAction);
                 menu.addAction(QString("Close"), this, SLOT(slotCloseCase()));
                 menu.addAction(QString("New View"), this, SLOT(slotAddView()));
                 menu.addAction(QString("New Grid Case Group"), this, SLOT(slotAddCaseGroup()));
@@ -182,14 +188,14 @@ void RimUiTreeView::contextMenuEvent(QContextMenuEvent* event)
             {
                 QMenu menu;
                 menu.addAction(QString("New Grid Case Group"), this, SLOT(slotAddCaseGroup()));
-                menu.addAction(QString("Paste"), this, SLOT(slotPastePdmObjects()));
+                menu.addAction(m_pasteAction);
                 menu.addAction(QString("Close"), this, SLOT(slotDeleteObjectFromPdmPointersField()));
                 menu.exec(event->globalPos());
             }
             else if (dynamic_cast<RimCaseCollection*>(uiItem->dataObject().p()))
             {
                 QMenu menu;
-                menu.addAction(QString("Paste"), this, SLOT(slotPastePdmObjects()));
+                menu.addAction(m_pasteAction);
                 menu.exec(event->globalPos());
             }
         }
@@ -968,3 +974,20 @@ void RimUiTreeView::keyPressEvent(QKeyEvent* keyEvent)
     QTreeView::keyPressEvent(keyEvent);
 }
 
+//--------------------------------------------------------------------------------------------------
+/// 
+//--------------------------------------------------------------------------------------------------
+bool RimUiTreeView::hasClipboardValidData()
+{
+    QClipboard* clipboard = QApplication::clipboard();
+    if (clipboard)
+    {
+        if (dynamic_cast<const MimeDataWithIndexes*>(clipboard->mimeData()))
+        {
+            return true;
+        }
+    }
+
+    return false;
+}
+
diff --git a/ApplicationCode/ProjectDataModel/RimUiTreeView.h b/ApplicationCode/ProjectDataModel/RimUiTreeView.h
index 07dc53f5cb..db6f4b9ca4 100644
--- a/ApplicationCode/ProjectDataModel/RimUiTreeView.h
+++ b/ApplicationCode/ProjectDataModel/RimUiTreeView.h
@@ -89,10 +89,13 @@ signals:
     void selectedObjectChanged( caf::PdmObject* pdmObject );
 
 private:
-
     void createPdmObjectsFromClipboard(caf::PdmObjectGroup* objectGroup);
+    bool hasClipboardValidData();
 
     virtual void keyPressEvent(QKeyEvent* keyEvent);
+
+private:
+    QAction* m_pasteAction;
 };