Inputs are more modulable (they also have a common history and clipboard). Search is now fully functional, and some other stuff

3 files changed, 256 insertions, 203 deletions

diff --git a/src/core.py b/src/core.py
index e41df02b..40d727b4 100644
--- a/src/core.py
+++ b/src/core.py
@@ -155,7 +155,6 @@ class Core(object):
         self.xmpp.add_event_handler("roster_update", self.on_roster_update)
         self.xmpp.add_event_handler("changed_status", self.on_presence)
 
-        # self.__debug_fill_roster()
 
     def grow_information_win(self):
         """
@@ -486,13 +485,10 @@ class Core(object):
         """
         """
         jid = presence['from']
-        log.debug('Presence Received: %s\n' % presence)
         contact = roster.get_contact_by_jid(jid.bare)
-        log.debug('Contact: %s\n' % contact)
         if not contact:
             return
         resource = contact.get_resource_by_fulljid(jid.full)
-        log.debug('Resource: %s\n' % resource)
         if not resource:
             return
         status = presence['type']
@@ -504,34 +500,6 @@ class Core(object):
         if isinstance(self.current_tab(), RosterInfoTab):
             self.refresh_window()
 
-    def __debug_fill_roster(self):
-        for i in range(10):
-            jid = 'contact%s@fion%s.org'%(i,i)
-            contact = Contact(jid)
-            contact.set_ask('wat')
-            contact.set_subscription('both')
-            roster.add_contact(contact, jid)
-            contact.set_name('%s %s fion'%(i,i))
-            roster.edit_groups_of_contact(contact, ['hello'])
-        for i in range(10):
-            jid = 'test%s@bernard%s.org'%(i,i)
-            contact = Contact(jid)
-            contact.set_ask('wat')
-            contact.set_subscription('both')
-            roster.add_contact(contact, jid)
-            contact.set_name('%s test'%(i))
-            roster.edit_groups_of_contact(contact, ['hello'])
-        for i in range(10):
-            jid = 'pouet@top%s.org'%(i)
-            contact = Contact(jid)
-            contact.set_ask('wat')
-            contact.set_subscription('both')
-            roster.add_contact(contact, jid)
-            contact.set_name('%s oula'%(i))
-            roster.edit_groups_of_contact(contact, ['hello'])
-        if isinstance(self.current_tab(), RosterInfoTab):
-            self.refresh_window()
-
     def on_roster_update(self, iq):
         """
         A subscription changed, or we received a roster item
@@ -1374,20 +1342,13 @@ class Core(object):
         if not key:
             return
         res = self.current_tab().on_input(key)
-        if not res:
-            return
-        if key in ('^J', '\n') and isinstance(res, str):
-            self.execute(res)
-        else :
-            # we did "enter" with an empty input in the roster
-            self.on_roster_enter_key(res)
+        self.refresh_window()
 
     def on_roster_enter_key(self, roster_row):
         """
         when enter is pressed on the roster window
         """
         if isinstance(roster_row, Contact):
-            # roster_row.toggle_folded()
             if not self.get_conversation_by_jid(roster_row.get_bare_jid()):
                 self.open_conversation_window(roster_row.get_bare_jid())
             else:
@@ -1427,7 +1388,6 @@ class Core(object):
             muc.send_private_message(self.xmpp, self.current_tab().get_name(), line)
         if isinstance(self.current_tab(), PrivateTab) or\
                 isinstance(self.current_tab(), ConversationTab):
-            log.debug('ALLO ICI\n\n')
             self.add_message_to_text_buffer(self.current_tab().get_room(), line, None, self.own_nick)
         elif isinstance(self.current_tab(), MucTab):
             muc.send_groupchat_message(self.xmpp, self.current_tab().get_name(), line)
diff --git a/src/tab.py b/src/tab.py
index 01ffeb42..5086735b 100644
--- a/src/tab.py
+++ b/src/tab.py
@@ -216,7 +216,7 @@ class MucTab(Tab):
         self.info_header = window.MucInfoWin(1, (self.width//10)*9, self.height-3-self.core.information_win_size, 0, stdscr, self.visible)
         self.info_win = window.TextWin(self.core.information_win_size, (self.width//10)*9, self.height-2-self.core.information_win_size, 0, stdscr, self.visible)
         self.tab_win = window.GlobalInfoBar(1, self.width, self.height-2, 0, stdscr, self.visible)
-        self.input = window.Input(1, self.width, self.height-1, 0, stdscr, self.visible)
+        self.input = window.MessageInput(1, self.width, self.height-1, 0, stdscr, self.visible)
 
     def resize(self, stdscr):
         """
@@ -244,14 +244,17 @@ class MucTab(Tab):
         self.input.refresh()
 
     def on_input(self, key):
-        self.key_func = {
+        key_func = {
             "\t": self.completion,
             "^I": self.completion,
             "M-i": self.completion,
             "KEY_BTAB": self.last_words_completion,
+            "^J": self.on_enter,
+            "^M": self.on_enter,
+            "\n": self.on_enter
             }
-        if key in self.key_func:
-            return self.key_func[key]()
+        if key in key_func:
+            return key_func[key]()
         return self.input.do_command(key)
 
     def completion(self):
@@ -271,7 +274,6 @@ class MucTab(Tab):
         for msg in self._room.messages[:-40:-1]:
             if not msg:
                 continue
-            log.debug('line: %s\n'%msg)
             for char in char_we_dont_want:
                 msg.txt = msg.txt.replace(char, ' ')
             for word in msg.txt.split():
@@ -279,6 +281,12 @@ class MucTab(Tab):
                     words.append(word)
         self.input.auto_completion(words, False)
 
+    def on_enter(self):
+        """
+        When enter is pressed, send the message to the Muc
+        """
+        self.core.execute(self.input.key_enter())
+
     def get_color_state(self):
         return self._room.color_state
 
@@ -313,7 +321,7 @@ class MucTab(Tab):
         self.info_win.resize(self.core.information_win_size, (self.width//10)*9, self.height-2-self.core.information_win_size, 0, stdscr, self.visible)
 
     def just_before_refresh(self):
-        self.input.move_cursor_to_pos()
+        return
 
     def on_close(self):
         return
@@ -329,7 +337,7 @@ class PrivateTab(Tab):
         self.info_header = window.PrivateInfoWin(1, self.width, self.height-3-self.core.information_win_size, 0, stdscr, self.visible)
         self.info_win = window.TextWin(self.core.information_win_size, self.width, self.height-2-self.core.information_win_size, 0, stdscr, self.visible)
         self.tab_win = window.GlobalInfoBar(1, self.width, self.height-2, 0, stdscr, self.visible)
-        self.input = window.Input(1, self.width, self.height-1, 0, stdscr, self.visible)
+        self.input = window.MessageInput(1, self.width, self.height-1, 0, stdscr, self.visible)
 
     def resize(self, stdscr):
         Tab.resize(self, stdscr)
@@ -359,8 +367,21 @@ class PrivateTab(Tab):
         return self._room.name
 
     def on_input(self, key):
+        key_func = {
+            "^J": self.on_enter,
+            "^M": self.on_enter,
+            "\n": self.on_enter
+            }
+        if key in key_func:
+            return key_func[key]()
         return self.input.do_command(key)
 
+    def on_enter(self):
+        """
+        When enter is pressed, send the message to the Muc
+        """
+        self.core.execute(self.input.key_enter())
+
     def on_lose_focus(self):
         self._room.set_color_state(theme.COLOR_TAB_NORMAL)
         self._room.remove_line_separator()
@@ -395,17 +416,6 @@ class RosterInfoTab(Tab):
     A tab, splitted in two, containing the roster and infos
     """
     def __init__(self, stdscr, core):
-        self.single_key_commands = {
-            "^J": self.on_enter,
-            "^M": self.on_enter,
-            "\n": self.on_enter,
-            ' ': self.on_space,
-            "/": self.on_slash,
-            "KEY_UP": self.move_cursor_up,
-            "KEY_DOWN": self.move_cursor_down,
-            "o": self.toggle_offline_show,
-            "^F": self.start_search,
-            }
         Tab.__init__(self, stdscr, core)
         self.name = "Roster"
         roster_width = self.width//2
@@ -415,7 +425,8 @@ class RosterInfoTab(Tab):
         self.info_win = window.TextWin(self.height-2, info_width, 0, roster_width+1, stdscr, self.visible)
         self.roster_win = window.RosterWin(self.height-2-3, roster_width, 0, 0, stdscr, self.visible)
         self.contact_info_win = window.ContactInfoWin(3, roster_width, self.height-2-3, 0, stdscr, self.visible)
-        self.input = window.Input(1, self.width, self.height-1, 0, stdscr, self.visible, False, "Enter commands with “/”. “o”: toggle offline show")
+        self.default_help_message = window.HelpText(1, self.width, self.height-1, 0, stdscr, self.visible, "Enter commands with “/”. “o”: toggle offline show")
+        self.input = self.default_help_message
         self.set_color_state(theme.COLOR_TAB_NORMAL)
 
     def resize(self, stdscr):
@@ -447,19 +458,22 @@ class RosterInfoTab(Tab):
         self._color_state = color
 
     def on_input(self, key):
-        if self.input.input_mode:
-            ret = self.input.do_command(key)
-            roster._contact_filter = (jid_and_name_match, self.input.text)
-            # if the input is empty, go back to command mode
-            if self.input.is_empty() and not self.input._instructions:
-                self.input.input_mode = False
-                curses.curs_set(0)
-                self.input.rewrite_text()
-            if self.input._instructions:
-                return True
-            return ret
-        if key in self.single_key_commands:
-            return self.single_key_commands[key]()
+        key_commands = {
+            "^J": self.on_enter,
+            "^M": self.on_enter,
+            "\n": self.on_enter,
+            ' ': self.on_space,
+            "/": self.on_slash,
+            "KEY_UP": self.move_cursor_up,
+            "KEY_DOWN": self.move_cursor_down,
+            "o": self.toggle_offline_show,
+            "^F": self.start_search,
+            }
+        res = self.input.do_command(key)
+        if res:
+            return res
+        if key in key_commands:
+            return key_commands[key]()
 
     def toggle_offline_show(self):
         """
@@ -476,9 +490,19 @@ class RosterInfoTab(Tab):
         """
         '/' is pressed, we enter "input mode"
         """
-        self.input.input_mode = True
         curses.curs_set(1)
-        self.on_input("/") # we add the slash
+        self.input = window.CommandInput(1, self.width, self.height-1, 0, self.default_help_message, self.visible, "", self.reset_help_message, self.execute_slash_command)
+        self.input.do_command("/") # we add the slash
+
+    def reset_help_message(self, _=None):
+        curses.curs_set(0)
+        self.input = self.default_help_message
+        return True
+
+    def execute_slash_command(self, txt):
+        if txt.startswith('/'):
+            self.core.execute(txt)
+        return self.reset_help_message()
 
     def on_lose_focus(self):
         self._color_state = theme.COLOR_TAB_NORMAL
@@ -518,6 +542,7 @@ class RosterInfoTab(Tab):
 
     def on_enter(self):
         selected_row = self.roster_win.get_selected_row()
+        self.core.on_roster_enter_key(selected_row)
         return selected_row
 
     def start_search(self):
@@ -526,15 +551,17 @@ class RosterInfoTab(Tab):
         in it.
         """
         curses.curs_set(1)
-        roster._contact_filter = (jid_and_name_match, self.input.text)
-        self.input.input_mode = True
-        self.input.start_command(self.on_search_terminate, self.on_search_terminate, '[search]')
+        self.input = window.CommandInput(1, self.width, self.height-1, 0, self.default_help_message, self.visible, "[Search]", self.on_search_terminate, self.on_search_terminate, self.set_roster_filter)
         return True
 
+    def set_roster_filter(self, txt):
+        roster._contact_filter = (jid_and_name_match, txt)
+
     def on_search_terminate(self, txt):
         curses.curs_set(0)
         roster._contact_filter = None
-        return True
+        self.reset_help_message()
+        return False
 
     def just_before_refresh(self):
         return
@@ -556,7 +583,7 @@ class ConversationTab(Tab):
         self.info_header = window.ConversationInfoWin(1, self.width, self.height-3-self.core.information_win_size, 0, stdscr, self.visible)
         self.info_win = window.TextWin(self.core.information_win_size, self.width, self.height-2-self.core.information_win_size, 0, stdscr, self.visible)
         self.tab_win = window.GlobalInfoBar(1, self.width, self.height-2, 0, stdscr, self.visible)
-        self.input = window.Input(1, self.width, self.height-1, 0, stdscr, self.visible)
+        self.input = window.MessageInput(1, self.width, self.height-1, 0, stdscr, self.visible)
 
     def resize(self, stdscr):
         Tab.resize(self, stdscr)
@@ -588,8 +615,22 @@ class ConversationTab(Tab):
         return self._name
 
     def on_input(self, key):
+        key_func = {
+            "^J": self.on_enter,
+            "^M": self.on_enter,
+            "\n": self.on_enter
+            }
+        if key in key_func:
+            return key_func[key]()
         return self.input.do_command(key)
 
+
+    def on_enter(self):
+        """
+        When enter is pressed, send the message to the Muc
+        """
+        self.core.execute(self.input.key_enter())
+
     def on_lose_focus(self):
         self.set_color_state(theme.COLOR_TAB_NORMAL)
         self._text_buffer.remove_line_separator()
diff --git a/src/window.py b/src/window.py
index 88683853..db8d2822 100644
--- a/src/window.py
+++ b/src/window.py
@@ -598,25 +598,54 @@ class TextWin(Win):
         self.visible = visible
         self._resize(height, width, y, x, stdscr, visible)
 
+class HelpText(Win):
+    """
+    A buffer just displaying a read-only message.
+    Usually used to replace an Input when the tab is in
+    command mode.
+    """
+    def __init__(self, height, width, y, x, parent_win, visible, text=''):
+        self.visible = visible
+        Win.__init__(self, height, width, y, x, parent_win)
+        self.txt = text
+
+    def resize(self, height, width, y, x, stdscr, visible):
+        self._resize(height, width, y, x, stdscr, visible)
+
+    def refresh(self):
+        if not self.visible:
+            return
+        with g_lock:
+            self._win.erase()
+            self.addstr(0, 0, self.txt[:self.width-1], curses.color_pair(theme.COLOR_INFORMATION_BAR))
+            self.finish_line(theme.COLOR_INFORMATION_BAR)
+            self._refresh()
+
+    def do_command(self, key):
+        return False
+
 class Input(Win):
     """
-    The line where text is entered
-    It can be in input mode or in commmand mode.
-    Command mode means that single_key_commands can be entered, handled
-    by the Tab object, while this input just displays an help text.
+    The simplest Input possible, provides just a way to edit a single line
+    of text. It also has a clipboard, common to all Inputs.
+    Doesn't have any history.
+    It doesn't do anything when enter is pressed either.
+    This should be herited for all kinds of Inputs, for example MessageInput
+    or the little inputs in dataforms, etc, adding specific features (completion etc)
+    It features two kinds of completion, but they have to be called from outside (the Tab),
+    passing the list of items that can be used to complete. The completion can be used
+    in a very flexible way.
     """
-    def __init__(self, height, width, y, x, stdscr, visible, input_mode=True, help_text=''):
+    clipboard = '' # A common clipboard for all the inputs, this makes
+    # it easy cut and paste text between various input
+    def __init__(self, height, width, y, x, stdscr, visible):
         self.key_func = {
             "KEY_LEFT": self.key_left,
             "M-D": self.key_left,
             "KEY_RIGHT": self.key_right,
             "M-C": self.key_right,
-            "KEY_UP": self.key_up,
-            "M-A": self.key_up,
             "KEY_END": self.key_end,
             "KEY_HOME": self.key_home,
-            "KEY_DOWN": self.key_down,
-            "M-B": self.key_down,
             "KEY_DC": self.key_dc,
             '^D': self.key_dc,
             'M-b': self.jump_word_left,
@@ -629,69 +658,13 @@ class Input(Win):
             'M-f': self.jump_word_right,
             "KEY_BACKSPACE": self.key_backspace,
             '^?': self.key_backspace,
-            '^J': self.on_enter,
-            '\n': self.on_enter,
             }
 
         Win.__init__(self, height, width, y, x, stdscr)
-        self.input_mode = input_mode
-        self.help_text = help_text # the text displayed in command_mode
         self.visible = visible
-        self.history = []
         self.text = ''
-        self.clipboard = None
         self.pos = 0            # cursor position
         self.line_pos = 0 # position (in self.text) of
-        # the first char to display on the screen
-        self.histo_pos = 0
-        self.hit_list = [] # current possible completion (normal)
-        self.last_completion = None # Contains the last nickname completed,
-                                    # if last key was a tab
-        # These are used when the user is entering a comand
-        self._on_cancel = None
-        self._on_terminate = None
-        self._instructions = ""  # a string displayed before the input, read-only
-
-    def on_enter(self):
-        """
-        Called when Enter is pressed
-        """
-        if not self._instructions:
-            return self.get_text()
-        self.on_terminate()
-        return True
-
-    def start_command(self, on_cancel, on_terminate, instructions):
-        """
-        Start a command, with an instruction, and two callbacks.
-        on_terminate is called when the command is successfull
-        on_cancel is called when the command is canceled
-        """
-        assert isinstance(instructions, str)
-        self._on_cancel = on_cancel
-        self._on_terminate = on_terminate
-        self._instructions = instructions
-
-    def cancel_command(self):
-        """
-        Call it to cancel the current command
-        """
-        self._on_cancel()
-        self._on_cancel = None
-        self._on_terminate = None
-        self._instructions = ''
-        return self.get_text()
-
-    def on_terminate(self):
-        """
-        Call it to terminate the command. Returns the content of the input
-        """
-        txt = self.get_text()
-        self._on_terminate(txt)
-        self._on_terminate = None
-        self._on_cancel = None
-        self._instructions = ''
-        return txt
 
     def is_empty(self):
         return len(self.text) == 0
@@ -716,6 +689,7 @@ class Input(Win):
         diff = self.pos+self.line_pos-previous_space
         for i in range(diff):
             self.key_left()
+        return True
 
     def jump_word_right(self):
         """
@@ -729,6 +703,7 @@ class Input(Win):
         diff = next_space - (self.pos+self.line_pos)
         for i in range(diff):
             self.key_right()
+        return True
 
     def delete_word(self):
         """
@@ -743,6 +718,7 @@ class Input(Win):
         for i in range(diff):
             self.key_backspace(False)
         self.rewrite_text()
+        return True
 
     def delete_end_of_line(self):
         """
@@ -750,9 +726,10 @@ class Input(Win):
         """
         if len(self.text) == self.pos+self.line_pos:
             return              # nothing to cut
-        self.clipboard = self.text[self.pos+self.line_pos:]
+        Input.clipboard = self.text[self.pos+self.line_pos:]
         self.text = self.text[:self.pos+self.line_pos]
         self.key_end()
+        return True
 
     def delete_begining_of_line(self):
         """
@@ -760,18 +737,20 @@ class Input(Win):
         """
         if self.pos+self.line_pos == 0:
             return
-        self.clipboard = self.text[:self.pos+self.line_pos]
+        Input.clipboard = self.text[:self.pos+self.line_pos]
         self.text = self.text[self.pos+self.line_pos:]
         self.key_home()
+        return True
 
     def paste_clipboard(self):
         """
         Insert what is in the clipboard at the cursor position
         """
-        if not self.clipboard or len(self.clipboard) == 0:
+        if not Input.clipboard or len(Input.clipboard) == 0:
             return
-        for letter in self.clipboard:
+        for letter in Input.clipboard:
             self.do_command(letter)
+        return True
 
     def key_dc(self):
         """
@@ -782,36 +761,7 @@ class Input(Win):
             return              # end of line, nothing to delete
         self.text = self.text[:self.pos+self.line_pos]+self.text[self.pos+self.line_pos+1:]
         self.rewrite_text()
-
-    def key_up(self):
-        """
-        Get the previous line in the history
-        """
-        if not len(self.history):
-            return
-        self._win.erase()
-        if self.histo_pos >= 0:
-            self.histo_pos -= 1
-        self.text = self.history[self.histo_pos+1]
-        self.key_end()
-
-    def key_down(self):
-        """
-        Get the next line in the history
-        """
-        if not len(self.history):
-            return
-        self.reset_completion()
-        if self.histo_pos < len(self.history)-1:
-            self.histo_pos += 1
-            self.text = self.history[self.histo_pos]
-            self.key_end()
-        else:
-            self.histo_pos = len(self.history)-1
-            self.text = ''
-            self.pos = 0
-            self.line_pos = 0
-            self.rewrite_text()
+        return True
 
     def key_home(self):
         """
@@ -821,6 +771,7 @@ class Input(Win):
         self.pos = 0
         self.line_pos = 0
         self.rewrite_text()
+        return True
 
     def key_end(self, reset=False):
         """
@@ -835,6 +786,7 @@ class Input(Win):
             self.pos = len(self.text)
             self.line_pos = 0
         self.rewrite_text()
+        return True
 
     def key_left(self):
         """
@@ -847,6 +799,7 @@ class Input(Win):
         elif self.pos >= 1:
             self.pos -= 1
         self.rewrite_text()
+        return True
 
     def key_right(self):
         """
@@ -860,6 +813,7 @@ class Input(Win):
         elif self.pos < len(self.text):
             self.pos += 1
         self.rewrite_text()
+        return True
 
     def key_backspace(self, reset=True):
         """
@@ -873,6 +827,7 @@ class Input(Win):
         self.key_left()
         if reset:
             self.rewrite_text()
+        return True
 
     def auto_completion(self, user_list, add_after=True):
         """
@@ -885,6 +840,7 @@ class Input(Win):
             self.shell_completion(user_list, add_after)
         else:
             self.normal_completion(user_list, add_after)
+        return True
 
     def reset_completion(self):
         """
@@ -977,7 +933,7 @@ class Input(Win):
         if key in self.key_func:
             return self.key_func[key]()
         if not key or len(key) > 1:
-            return    # ignore non-handled keyboard shortcuts
+            return False   # ignore non-handled keyboard shortcuts
         self.reset_completion()
         self.text = self.text[:self.pos+self.line_pos]+key+self.text[self.pos+self.line_pos:]
         (y, x) = self._win.getyx()
@@ -987,38 +943,22 @@ class Input(Win):
             self.pos += 1
         if reset:
             self.rewrite_text()
+        return True
 
     def get_text(self):
         """
         Clear the input and return the text entered so far
         """
-        txt = self.text
-        self.text = ''
-        self.pos = 0
-        self.line_pos = 0
-        if len(txt) != 0:
-            self.history.append(txt)
-            self.histo_pos = len(self.history)-1
-        self.rewrite_text()
-        return txt
+        return self.text
 
     def rewrite_text(self):
         """
         Refresh the line onscreen, from the pos and pos_line
         """
         with g_lock:
-            self.clear_text()
-            if self.input_mode:
-                self.addstr(self._instructions, curses.color_pair(theme.COLOR_INFORMATION_BAR))
-                if self._instructions:
-                    self.addstr(' ')
-                self.addstr(self.text[self.line_pos:self.line_pos+self.width-1])
-            else:
-                self.addstr(self.help_text, curses.color_pair(theme.COLOR_INFORMATION_BAR))
-                self.finish_line(theme.COLOR_INFORMATION_BAR)
+            self._win.erase()
+            self.addstr(self.text[self.line_pos:self.line_pos+self.width-1])
             cursor_pos = self.pos
-            if self._instructions:
-                cursor_pos += 1 + len(self._instructions)
             self.addstr(0, cursor_pos, '') # WTF, this works but .move() doesn't…
             self._refresh()
 
@@ -1028,13 +968,125 @@ class Input(Win):
         self.rewrite_text()
 
     def clear_text(self):
+        self.text = ''
+        self.pos = 0
+        self.line_pos = 0
+        self.rewrite_text()
+
+class MessageInput(Input):
+    """
+    The input featuring history and that is being used in
+    Conversation, Muc and Private tabs
+    """
+    history = list()            # The history is common to all MessageInput
+
+    def __init__(self, height, width, y, x, stdscr, visible):
+        Input.__init__(self, height, width, y, x, stdscr, visible)
+        self.histo_pos = 0
+        self.key_func["KEY_UP"] = self.key_up
+        self.key_func["M-A"] =  self.key_up
+        self.key_func["KEY_DOWN"] = self.key_down
+        self.key_func["M-B"] = self.key_down
+
+    def key_up(self):
+        """
+        Get the previous line in the history
+        """
+        if not len(MessageInput.history):
+            return
+        self.reset_completion()
         self._win.erase()
+        if self.histo_pos >= 0:
+            self.histo_pos -= 1
+        self.text = MessageInput.history[self.histo_pos+1]
+        self.key_end()
+
+    def key_down(self):
+        """
+        Get the next line in the history
+        """
+        if not len(MessageInput.history):
+            return
+        self.reset_completion()
+        if self.histo_pos < len(MessageInput.history)-1:
+            self.histo_pos += 1
+            self.text = self.history[self.histo_pos]
+            self.key_end()
+        else:
+            self.histo_pos = len(MessageInput.history)-1
+            self.text = ''
+            self.pos = 0
+            self.line_pos = 0
+            self.rewrite_text()
+
+    def key_enter(self):
+        txt = self.get_text()
+        if len(txt) != 0:
+            self.history.append(txt)
+            self.histo_pos = len(self.history)-1
+        self.clear_text()
+        return txt
 
-    def move_cursor_to_pos(self):
+class CommandInput(Input):
+    """
+    An input with an help message in the left, with three given callbacks:
+    one when when successfully 'execute' the command and when we abort it.
+    The last callback is optional and is called on any input key
+    This input is used, for example, in the RosterTab when, to replace the
+    HelpMessage when a command is started
+    The on_input callback
+    """
+    def __init__(self, height, width, y, x, stdscr, visible,
+                 help_message, on_abort, on_success, on_input=None):
+        Input.__init__(self, height, width, y, x, stdscr, visible)
+        self.on_abort = on_abort
+        self.on_success = on_success
+        self.on_input = on_input
+        self.help_message = help_message
+        self.key_func['^J'] = self.success
+        self.key_func['^M'] = self.success
+        self.key_func['\n'] = self.success
+        self.key_func['^G'] = self.abort
+
+    def do_command(self, key):
+        res = Input.do_command(self, key)
+        if self.on_input:
+            self.on_input(self.get_text())
+        log.debug('do_command returns : %s\n' % res)
+        return res
+
+    def success(self):
+        """
+        call the success callback, passing the text as argument
+        """
+        self.on_input = None
+        log.debug('before on_success')
+        res = self.on_success(self.get_text())
+        log.debug('after on_success, res: %s'%res)
+        return  res
+
+    def abort(self):
+        """
+        Call the abort callback, passing the text as argument
+        """
+        self.on_input = None
+        return self.on_abort(self.get_text())
+
+    def rewrite_text(self):
         """
-        move the cursor at the current pos
+        Rewrite the text just like a normal input, but with the instruction
+        on the left
         """
-        return
+        with g_lock:
+            self._win.erase()
+            self.addstr(self.help_message, curses.color_pair(theme.COLOR_INFORMATION_BAR))
+            cursor_pos = self.pos + len(self.help_message)
+            if len(self.help_message):
+                self.addstr(' ')
+                cursor_pos += 1
+            self.addstr(self.text[self.line_pos:self.line_pos+self.width-1])
+            self.addstr(0, cursor_pos, '') # WTF, this works but .move() doesn't…
+            self._refresh()
 
 class VerticalSeparator(Win):
     """