ChatViewerAdapter simplified: "intent" chat taken from ChatManager. No need to...

ChatViewerAdapter simplified: "intent" chat taken from ChatManager. No need to recreate adapter to open new chat.

app/src/main/java/com/xabber/android/ui/ChatViewer.java

@@ -58,7 +58,6 @@ public class ChatViewer extends ChatScrollerActivity {
         LinearLayout chatScrollIndicatorLayout = (LinearLayout) findViewById(R.id.chat_scroll_indicator);
 
         chatScroller.createView(viewPager, chatScrollIndicatorLayout);
-        chatScroller.initChats();
     }
 
     @Override

app/src/main/java/com/xabber/android/ui/ContactList.java

@@ -155,7 +155,6 @@ public class ContactList extends ChatIntentActivity implements OnAccountChangedL
             LinearLayout chatScrollIndicatorLayout = (LinearLayout) findViewById(R.id.chat_scroll_indicator);
 
             chatScroller.createView(viewPager, chatScrollIndicatorLayout);
-            chatScroller.initChats();
         }
 
         toolbar.setOnClickListener(this);
@@ -313,7 +312,11 @@ public class ContactList extends ChatIntentActivity implements OnAccountChangedL
                 case ACTION_ATTENTION:
                 case ACTION_SHORTCUT:
                     action = null;
-                    startChat(ChatManager.getInstance().getSelectedChat());
+                    if (isDualPanelView) {
+                        chatScroller.update();
+                    } else {
+                        startActivity(ChatViewer.createChatViewerIntent(this));
+                    }
             }
         }
 
@@ -429,7 +432,12 @@ public class ContactList extends ChatIntentActivity implements OnAccountChangedL
                 startActivity(ConferenceAdd.createIntent(this));
                 return true;
             case R.id.action_chat_list:
-                startChat(null);
+                ChatManager.getInstance().setSelectedChat(null);
+                if (isDualPanelView) {
+                    chatScroller.update();
+                } else {
+                    startActivity(ChatViewer.createChatViewerIntent(this));
+                }
                 return true;
             default:
                 return super.onOptionsItemSelected(item);
@@ -482,7 +490,6 @@ public class ContactList extends ChatIntentActivity implements OnAccountChangedL
         ChatManager.getInstance().setSelectedChat(null);
 
         if (isDualPanelView) {
-            chatScroller.initChats();
             chatScroller.update();
         }
     }
@@ -573,7 +580,6 @@ public class ContactList extends ChatIntentActivity implements OnAccountChangedL
         ChatManager.getInstance().setInitialChat(abstractContact);
         ChatManager.getInstance().setSelectedChat(abstractContact);
         if (isDualPanelView) {
-            chatScroller.initChats();
             chatScroller.update();
         } else {
             startActivity(ChatViewer.createChatViewerIntent(this));
@@ -624,7 +630,6 @@ public class ContactList extends ChatIntentActivity implements OnAccountChangedL
 
         if (ChatManager.getInstance().getInitialChat().equals(chat)) {
             ChatManager.getInstance().setInitialChat(null);
-            chatScroller.initChats();
         }
 
         chatScroller.update();

app/src/main/java/com/xabber/android/ui/adapter/ChatViewerAdapter.java

@@ -9,6 +9,7 @@ import android.view.ViewGroup;
 import com.xabber.android.data.entity.BaseEntity;
 import com.xabber.android.data.message.AbstractChat;
 import com.xabber.android.data.message.MessageManager;
+import com.xabber.android.data.message.chat.ChatManager;
 import com.xabber.android.ui.ChatViewerFragment;
 import com.xabber.android.ui.RecentChatFragment;
 import com.xabber.xmpp.address.Jid;
@@ -26,24 +27,12 @@ public class ChatViewerAdapter extends FragmentStatePagerAdapter {
     /**
      * Intent sent while opening chat activity.
      */
-    private final AbstractChat intent;
     private ArrayList<AbstractChat> activeChats;
     private Fragment currentFragment;
 
-    public ChatViewerAdapter(FragmentManager fragmentManager, BaseEntity chat) {
-        super(fragmentManager);
-
-        activeChats = new ArrayList<>(MessageManager.getInstance().getActiveChats());
-        intent = MessageManager.getInstance().getOrCreateChat(chat.getAccount(), Jid.getBareAddress(chat.getUser()));
-
-        updateChats();
-    }
-
     public ChatViewerAdapter(FragmentManager fragmentManager) {
         super(fragmentManager);
-
         activeChats = new ArrayList<>(MessageManager.getInstance().getActiveChats());
-        intent = null;
         updateChats();
     }
 
@@ -72,6 +61,13 @@ public class ChatViewerAdapter extends FragmentStatePagerAdapter {
 
     public boolean updateChats() {
         ArrayList<AbstractChat> newChats = new ArrayList<>(MessageManager.getInstance().getActiveChats());
+        BaseEntity initialChat = ChatManager.getInstance().getInitialChat();
+
+        AbstractChat intent = null;
+
+        if (initialChat != null) {
+            intent = MessageManager.getInstance().getOrCreateChat(initialChat.getAccount(), Jid.getBareAddress(initialChat.getUser()));
+        }
 
         if (intent != null && !newChats.contains(intent)) {
             newChats.add(intent);

app/src/main/java/com/xabber/android/ui/helper/ChatScroller.java

@@ -63,20 +63,8 @@ public class ChatScroller implements
     public void createView(ViewPager viewPager, LinearLayout chatScrollIndicatorLayout) {
         this.viewPager = viewPager;
         this.chatScrollIndicatorAdapter = new ChatScrollIndicatorAdapter(activity, chatScrollIndicatorLayout);
-    }
 
-    public void onHide() {
-        MessageManager.getInstance().removeVisibleChat();
-    }
-
-    public void initChats() {
-
-        if (chatManager.getInitialChat() != null) {
-            chatViewerAdapter = new ChatViewerAdapter(activity.getFragmentManager(), chatManager.getInitialChat());
-        } else {
         chatViewerAdapter = new ChatViewerAdapter(activity.getFragmentManager());
-        }
-
         viewPager.setAdapter(chatViewerAdapter);
         viewPager.setOnPageChangeListener(this);
 
@@ -87,6 +75,10 @@ public class ChatScroller implements
         chatScrollIndicatorAdapter.update(chatViewerAdapter.getActiveChats());
     }
 
+    public void onHide() {
+        MessageManager.getInstance().removeVisibleChat();
+    }
+
     public void update() {
         if (!isInitialized()) {
             return;