very basic prototype for delete undo

the idea is to just hide applets at first and then offer a really delete and undo buttons

Change-Id: I4d869cb58f5c0fb0163d5d4d6b265af860d8727e

src/plasma/plasma.h

@@ -253,7 +253,8 @@ public:
         ActiveStatus = 2, /**< The Item is active **/
         NeedsAttentionStatus = 3, /**< The Item needs attention **/
         RequiresAttentionStatus = 4, /**< The Item needs persistent attention **/
-        AcceptingInputStatus = 5 /**< The Item is accepting input **/
+        AcceptingInputStatus = 5, /**< The Item is accepting input **/
+        AwaitingDeletionStatus = -1 /**< The user asked to delete this applet*/
     };
     Q_ENUMS(ItemStatus)
 

src/plasma/private/applet_p.cpp

@@ -220,6 +220,13 @@ void AppletPrivate::askDestroy()
         return; //don't double delete
     }
 
+    if (itemStatus == Types::AwaitingDeletionStatus) {
+        transient = true;
+        cleanUpAndDelete();
+    } else {
+        q->setStatus(Types::AwaitingDeletionStatus);
+    }
+    /*
     if (q->isContainment()) {
         QMessageBox *box = new QMessageBox(QMessageBox::Warning, i18nc("@title:window %1 is the name of the containment", "Remove %1", q->title()), i18nc("%1 is the name of the containment", "Do you really want to remove this %1?", q->title()), QMessageBox::StandardButtons(QMessageBox::Yes | QMessageBox::No));
         box->setWindowFlags((Qt::WindowFlags)(box->windowFlags() | Qt::WA_DeleteOnClose));
@@ -238,10 +245,9 @@ void AppletPrivate::askDestroy()
         });
 
         return;
-    }
+    }*/
+
     
-    transient = true;
-    cleanUpAndDelete();
 }
 
 void AppletPrivate::globalShortcutChanged()

src/plasma/private/containment_p.cpp

@@ -115,6 +115,9 @@ void ContainmentPrivate::configChanged()
 
 void ContainmentPrivate::checkStatus(Plasma::Types::ItemStatus appletStatus)
 {
+    if (appletStatus == Types::AwaitingDeletionStatus) {
+        return;
+    }
     //qDebug() << "================== "<< appletStatus << q->status();
     if (appletStatus == q->status()) {
         emit q->statusChanged(appletStatus);

src/scriptengines/qml/plasmoid/appletinterface.cpp

@@ -72,6 +72,7 @@ AppletInterface::AppletInterface(DeclarativeAppletScript *script, const QVariant
 
     connect(applet(), &Plasma::Applet::statusChanged,
             this, &AppletInterface::statusChanged);
+
     connect(applet(), &Plasma::Applet::activated,
             this, &AppletInterface::activated);