From 2ca14edbb5fa27ad39f596e92e640a38e94ac4f8 Mon Sep 17 00:00:00 2001
From: Madhur Garg <madhurgarg96@gmail.com>
Date: Tue, 16 Jul 2019 00:54:40 +0530
Subject: Fixed repeated query for messages on pressing PageUp

---
 poezio/mam.py           | 3 +++
 poezio/tabs/basetabs.py | 6 +++++-
 2 files changed, 8 insertions(+), 1 deletion(-)

diff --git a/poezio/mam.py b/poezio/mam.py
index a6cd05f6..7b22e5a1 100644
--- a/poezio/mam.py
+++ b/poezio/mam.py
@@ -57,6 +57,7 @@ async def query(self, remote_jid, start, end, top):
             for msg in rsm['mam']['results']:
                 msgs.append(msg)
                 if msg_count == 10:
+                    self.query_id = 0
                     timestamp = datetime.now()
                     add_line(text_buffer, 'End of MAM query: ', timestamp, 'MAM', top)
                     self.core.refresh_window()
@@ -76,6 +77,7 @@ async def query(self, remote_jid, start, end, top):
                 message = forwarded['stanza']
                 add_line(text_buffer, message['body'], timestamp, str(message['from']), top)
                 self.core.refresh_window()
+    self.query_id = 0
     timestamp = datetime.now()
     add_line(text_buffer, 'End of MAM query: ', timestamp, 'MAM', top)
 
@@ -101,6 +103,7 @@ def mam_scroll(self):
     self.text_win.pos += self.text_win.height - 1
     if self.text_win.pos + self.text_win.height > len(self.text_win.built_lines):
         asyncio.ensure_future(query(self, remote_jid, start, end, top))
+        self.query_id = 1
         self.text_win.pos = len(self.text_win.built_lines) - self.text_win.height
         if self.text_win.pos < 0:
             self.text_win.pos = 0
diff --git a/poezio/tabs/basetabs.py b/poezio/tabs/basetabs.py
index f23b3fd9..ccd3a9d0 100644
--- a/poezio/tabs/basetabs.py
+++ b/poezio/tabs/basetabs.py
@@ -474,6 +474,7 @@ class ChatTab(Tab):
             jid = JID(jid)
         assert jid.domain
         self._jid = jid
+        self.query_id = 0
 
         self._name = jid.full  # type: Optional[str]
         self.text_win = None
@@ -959,7 +960,10 @@ class ChatTab(Tab):
         return self.text_win.scroll_down(1)
 
     def on_scroll_up(self):
-        return mam.mam_scroll(self)
+        if self.query_id == 0:
+            return mam.mam_scroll(self)
+        else:
+            return self.text_win.scroll_up(self.text_win.height - 1)
 
     def on_scroll_down(self):
         return self.text_win.scroll_down(self.text_win.height - 1)
-- 
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