Revert "Fix #2072 (only resize a tab if the size changed since the last display)"

This reverts commit b46f0f5e26.

Conflicts:
	src/tabs/muclisttab.py

Doing this made the unresized elements refresh in the old subwins,
causing glitches and weirdness. And anyway, the only problematic
element is the TextWin (rebuilding all the lines of a buffer is
expensive), but it already checks if the width changed.

src/core/core.py

@@ -1582,7 +1582,9 @@ class Core(object):
         self.resize_global_information_win()
         with g_lock:
             for tab in self.tabs:
-                if not config.get('lazy_resize', True):
+                if config.get('lazy_resize', True):
+                    tab.need_resize = True
+                else:
                     tab.resize()
             if self.tabs:
                 self.full_screen_redraw()

src/tabs/basetabs.py

@@ -96,10 +96,10 @@ class Tab(object):
         self._state = 'normal'
         self._prev_state = None
 
+        self.need_resize = False
         self.key_func = {}      # each tab should add their keys in there
                                 # and use them in on_input
         self.commands = {}      # and their own commands
-        self._saved_size = (-1, -1)
 
 
     @property
@@ -185,13 +185,6 @@ class Tab(object):
         elif not self._prev_state:
             self._state = 'normal'
 
-    def push_size(self):
-        self._saved_size = (self.height, self.width)
-
-    @property
-    def need_resize(self):
-        return self._saved_size != (self.height, self.width)
-
     @staticmethod
     def resize(scr):
         with g_lock:

src/tabs/conversationtab.py

@@ -260,6 +260,7 @@ class ConversationTab(ChatTab):
                 callback=callback)
 
     def resize(self):
+        self.need_resize = False
         if self.size.tab_degrade_y:
             display_bar = False
             info_win_height = 0
@@ -282,7 +283,6 @@ class ConversationTab(ChatTab):
                                     - tab_win_height,
                                 0)
         self.input.resize(1, self.width, self.height - 1, 0)
-        self.push_size()
 
     def refresh(self):
         if self.need_resize:

src/tabs/data_forms.py

@@ -57,6 +57,7 @@ class DataFormsTab(Tab):
             self.form_win.on_input(key)
 
     def resize(self):
+        self.need_resize = False
         self.topic_win.resize(1, self.width, 0, 0)
         self.form_win.resize(self.height - 3 - Tab.tab_win_height(),
                              self.width, 1, 0)
@@ -64,7 +65,6 @@ class DataFormsTab(Tab):
         self.help_win_dyn.resize(1, self.width,
                                  self.height - 2 - Tab.tab_win_height(), 0)
         self.lines = []
-        self.push_size()
 
     def refresh(self):
         if self.need_resize:

src/tabs/muctab.py

@@ -796,7 +796,7 @@ class MucTab(ChatTab):
         """
         Resize the whole window. i.e. all its sub-windows
         """
-        log.debug('RESIZE PLS')
+        self.need_resize = False
         if config.get("hide_user_list", False) or self.size.tab_degrade_x:
             display_user_list = False
             text_width = self.width
@@ -833,7 +833,6 @@ class MucTab(ChatTab):
                                     - tab_win_height,
                                 0)
         self.input.resize(1, self.width, self.height-1, 0)
-        self.push_size()
 
     def refresh(self):
         if self.need_resize:

src/tabs/privatetab.py

@@ -237,6 +237,8 @@ class PrivateTab(ChatTab):
             self.parent_muc.command_info(user)
 
     def resize(self):
+        self.need_resize = False
+
         if self.size.tab_degrade_y:
             info_win_height = 0
             tab_win_height = 0
@@ -252,7 +254,6 @@ class PrivateTab(ChatTab):
                                     - tab_win_height,
                                 0)
         self.input.resize(1, self.width, self.height-1, 0)
-        self.push_size()
 
     def refresh(self):
         if self.need_resize:

src/tabs/rostertab.py

@@ -266,6 +266,7 @@ class RosterInfoTab(Tab):
         self.core.command_last_activity(jid)
 
     def resize(self):
+        self.need_resize = False
         if self.size.tab_degrade_x:
             display_info = False
             roster_width = self.width
@@ -301,7 +302,6 @@ class RosterInfoTab(Tab):
                                roster_width, 0, 0)
         self.input.resize(1, self.width, self.height-1, 0)
         self.default_help_message.resize(1, self.width, self.height-1, 0)
-        self.push_size()
 
     def completion(self):
         # Check if we are entering a command (with the '/' key)

src/tabs/xmltab.py

@@ -164,6 +164,7 @@ class XMLTab(Tab):
         self.core.close_tab()
 
     def resize(self):
+        self.need_resize = False
         if self.size.tab_degrade_y:
             info_win_size = 0
             tab_win_height = 0
@@ -179,7 +180,6 @@ class XMLTab(Tab):
                                     - tab_win_height,
                                 0)
         self.input.resize(1, self.width, self.height-1, 0)
-        self.push_size()
 
     def refresh(self):
         if self.need_resize: