class CommandView(gtk.Entry):
"""The area where the user enters commands to be sent to the MUD."""
def __init__(self, gui):
gtk.Entry.__init__(self)
self.realm = gui.realm
self.gui = gui
self.tabdict = Trie()
self.hist = CommandHistory(200)
self.connect('key-press-event', self.key_pressed_cb)
self.modify_font(pango.FontDescription('monospace 8'))
def key_pressed_cb(self, widget, event):
"""The user's pressed a key.
First, this checks to see if there is a macro bound for the keychord,
and if there is then it is run; if not, the key is handled by PyGTK.
"""
chord = from_gtk_event(event)
if not self.gui.realm.maybe_do_macro(chord):
#not a macro, so keep processing.
return False
return True
def history_up(self):
"""Move up (ie, back in time) one command in the history."""
#cursor will be at the end of the line, as it has no left gravity.
self.set_text(self.hist.advance())
self.set_position(-1)
def history_down(self):
"""Move down (ie, forwards in time) one command in the history."""
self.set_text(self.hist.retreat())
self.set_position(-1)
def get_all_text(self):
"""Finger-saving mathod to get all the text from the buffer."""
bytes = self.get_chars(0, -1)
return bytes.decode('utf-8')
def escape_pressed(self):
"""Add the current line to the list of previous commands, and clear
the buffer.
"""
self.hist.add_command(self.get_all_text())
self.set_text('')
def submit_line(self):
"""Send the current line to the MUD and clear the buffer."""
text = self.get_all_text()
#self.set_text('')
self.select_region(0,-1)
self.realm.receive_gui_line(text)
if not self.realm.server_echo:
self.hist.add_command(text)
def tab_complete(self):
"""Tab-completion."""
line = self.get_all_text()
#cursor position as an integer from the start of the line
ind = self.get_position()
line, ind = self.tabdict.complete(line, ind)
self.set_text(line)
#move the cursor to where the tabdict wants it
self.set_position(ind)
def add_line_to_tabdict(self, line):
"""Add all the new words in the line to our tabdict."""
self.tabdict.add_line(line)
class TestCommandHistory:
def setUp(self):
self.c = CommandHistory(5)
def test_adds_new_command_to_buffer(self):
self.c.add_command("foo")
r = self.c.advance()
assert r == 'foo', r
def test_doesnt_add_dupes(self):
self.c.add_command("spam")
self.c.add_command("foo")
self.c.add_command("foo")
assert self.c.advance() == 'foo'
assert self.c.advance() == 'spam'
def test_is_LIFO_wrt_commands(self):
self.c.add_command("foo")
self.c.add_command('bar')
self.c.add_command("baz")
assert self.c.advance() == 'baz'
assert self.c.advance() == 'bar'
assert self.c.advance() == 'foo'
def test_doesnt_add_blanks_to_history(self):
self.c.add_command("foo")
self.c.add_command(" ")
assert self.c.advance() == 'foo'
def test_has_maximum_buffer_size(self):
cs = 'foo bar baz qux spam eggs'.split()
for c in cs:
self.c.add_command(c)
res = [self.c.advance() for _ in range(6)]
assert res == ['eggs', 'spam', 'qux', 'baz', 'bar', 'bar'], res
def test_moving_back_and_forth(self):
for c in reversed('foo bar baz spam eggs'.split()):
self.c.add_command(c)
assert self.c.advance() == 'foo'
assert self.c.advance() == 'bar'
assert self.c.advance() == 'baz'
assert self.c.retreat() == 'bar'
def test_goes_back_to_start_on_normal_addition(self):
self.c.add_command("foo")
self.c.add_command("bar")
self.c.advance()
self.c.add_command('baz')
assert self.c.advance() == 'baz'
def test_goes_back_to_start_on_blank(self):
self.c.add_command('foo')
self.c.add_command('baz')
self.c.advance()
self.c.add_command("")
assert self.c.advance() == 'baz'
def test_no_strange_stuff_on_bogus_retreat(self):
self.c.add_command("foo")
self.c.add_command("bar")
self.c.add_command("baz")
assert self.c.retreat() == ''
def test_advance_with_empty_buffer_reutrns_empty_string(self):
assert self.c.advance() == ''