smartlist: do not add clear conversation on swarm

Change-Id: Iec99bb41a15b0721f7985fb031a29601b8cb675f

src/mainview/components/ConversationListView.qml

@@ -139,6 +139,7 @@ ListView {
 
             responsibleAccountId = LRCInstance.currentAccountId
             responsibleConvUid = item.convId
+            isSwarm = item.isSwarm
             contactType = item.contactType
 
             userProfile.responsibleConvUid = item.convId

src/mainview/components/ConversationSmartListContextMenu.qml

@@ -32,6 +32,7 @@ ContextMenuAutoLoader {
 
     property string responsibleAccountId: ""
     property string responsibleConvUid: ""
+    property bool isSwarm: false
     property int contactType: Profile.Type.INVALID
     property bool hasCall: {
         if (responsibleAccountId && responsibleConvUid)
@@ -55,6 +56,18 @@ ContextMenuAutoLoader {
                             false)
             }
         },
+        GeneralMenuItem {
+            id: clearConversation
+
+            canTrigger: !isSwarm
+            itemName: JamiStrings.clearConversation
+            iconSource: "qrc:/images/icons/place_audiocall-24px.svg"
+            onClicked: {
+                MessagesAdapter.clearConversationHistory(
+                            responsibleAccountId,
+                            responsibleConvUid)
+            }
+        },
         GeneralMenuItem {
             id: startAudioCall