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"""
Windows relevant for the listing tabs, not much else
"""
import logging
log = logging.getLogger(__name__)
import curses
from . import Win, g_lock
from theming import to_curses_attr, get_theme
class ListWin(Win):
"""
A list (with no depth, so not for the roster) that can be
scrolled up and down, with one selected line at a time
"""
def __init__(self, columns, with_headers=True):
Win.__init__(self)
self._columns = columns # a dict {'column_name': tuple_index}
self._columns_sizes = {} # a dict {'column_name': size}
self.sorted_by = (None, None) # for example: ('name', '↑')
self.lines = [] # a list of dicts
self._selected_row = 0
self._starting_pos = 0 # The column number from which we start the refresh
@property
def pos(self):
if len(self.lines) > self.height:
return len(self.lines)
else:
return 0
def empty(self):
"""
emtpy the list and reset some important values as well
"""
self.lines = []
self._selected_row = 0
self._starting_pos = 0
def resize_columns(self, dic):
"""
Resize the width of the columns
"""
self._columns_sizes = dic
def sort_by_column(self, col_name, asc=True):
"""
Sort the list by the given column, ascendant or descendant
"""
if not col_name:
return
elif asc:
self.lines.sort(key=lambda x: x[self._columns[col_name]])
else:
self.lines.sort(key=lambda x: x[self._columns[col_name]],
reverse=True)
self.refresh()
curses.doupdate()
def add_lines(self, lines):
"""
Append some lines at the end of the list
"""
if not lines:
return
self.lines.extend(lines)
def set_lines(self, lines):
"""
Set the lines to another list
"""
if not lines:
return
self.lines = lines
def get_selected_row(self):
"""
Return the tuple representing the selected row
"""
if self._selected_row is not None and self.lines:
return self.lines[self._selected_row]
return None
def refresh(self):
log.debug('Refresh: %s', self.__class__.__name__)
with g_lock:
self._win.erase()
lines = self.lines[self._starting_pos:self._starting_pos+self.height]
for y, line in enumerate(lines):
x = 0
for col in self._columns.items():
try:
txt = line[col[1]] or ''
except KeyError:
txt = ''
size = self._columns_sizes[col[0]]
txt += ' ' * (size-len(txt))
if not txt:
continue
if line is self.lines[self._selected_row]:
self.addstr(y, x, txt[:size], to_curses_attr(get_theme().COLOR_INFORMATION_BAR))
else:
self.addstr(y, x, txt[:size])
x += size
self._refresh()
def move_cursor_down(self):
"""
Move the cursor Down
"""
if not self.lines:
return
if self._selected_row < len(self.lines) - 1:
self._selected_row += 1
while self._selected_row >= self._starting_pos + self.height:
self._starting_pos += self.height // 2
if self._starting_pos < 0:
self._starting_pos = 0
return True
def move_cursor_up(self):
"""
Move the cursor Up
"""
if not self.lines:
return
if self._selected_row > 0:
self._selected_row -= 1
while self._selected_row < self._starting_pos:
self._starting_pos -= self.height // 2
return True
def scroll_down(self):
if not self.lines:
return
self._selected_row += self.height
if self._selected_row > len(self.lines) - 1:
self._selected_row = len(self.lines) -1
while self._selected_row >= self._starting_pos + self.height:
self._starting_pos += self.height // 2
if self._starting_pos < 0:
self._starting_pos = 0
return True
def scroll_up(self):
if not self.lines:
return
self._selected_row -= self.height + 1
if self._selected_row < 0:
self._selected_row = 0
while self._selected_row < self._starting_pos:
self._starting_pos -= self.height // 2
return True
class ColumnHeaderWin(Win):
"""
A class displaying the column's names
"""
def __init__(self, columns):
Win.__init__(self)
self._columns = columns
self._columns_sizes = {}
self._column_sel = ''
self._column_order = ''
self._column_order_asc = False
def resize_columns(self, dic):
self._columns_sizes = dic
def get_columns(self):
return self._columns
def refresh(self):
log.debug('Refresh: %s', self.__class__.__name__)
with g_lock:
self._win.erase()
x = 0
for col in self._columns:
txt = col
if col in self._column_order:
if self._column_order_asc:
txt += get_theme().CHAR_COLUMN_ASC
else:
txt += get_theme().CHAR_COLUMN_DESC
#⇓⇑↑↓⇧⇩▲▼
size = self._columns_sizes[col]
txt += ' ' * (size-len(txt))
if col in self._column_sel:
self.addstr(0, x, txt, to_curses_attr(get_theme().COLOR_COLUMN_HEADER_SEL))
else:
self.addstr(0, x, txt, to_curses_attr(get_theme().COLOR_COLUMN_HEADER))
x += size
self._refresh()
def sel_column(self, dic):
self._column_sel = dic
def get_sel_column(self):
return self._column_sel
def set_order(self, order):
self._column_order = self._column_sel
self._column_order_asc = order
def get_order(self):
if self._column_sel == self._column_order:
return self._column_order_asc
else:
return False
def sel_column_left(self):
if self._column_sel in self._columns:
index = self._columns.index(self._column_sel)
if index > 1:
index = index -1
else:
index = 0
else:
index = 0
self._column_sel = self._columns[index]
self.refresh()
def sel_column_right(self):
if self._column_sel in self._columns:
index = self._columns.index(self._column_sel)
if index < len(self._columns)-2:
index = index +1
else:
index = len(self._columns) -1
else:
index = len(self._columns) - 1
self._column_sel = self._columns[index]
self.refresh()
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