class ErrorScreen(BaseScreen):
"""Display a traceback within curses.
"""
def __init__(self, screen, traceback_):
"""Takes the screen where the error occured and the traceback.
"""
self.screen = screen
self.colors = screen.colors
self.blocks = screen.blocks
self.traceback_ = traceback_
self.win = self.screen.win
self.win.clear()
self.win.refresh()
# BaseScreen contracts
# ====================
ui_chars = (ord('q'), curses.KEY_UP, curses.KEY_DOWN, curses.KEY_LEFT,
curses.KEY_PPAGE, curses.KEY_NPAGE, curses.KEY_BACKSPACE)
def resize(self):
try:
self.lines = format_tb(self.W - 1, self.traceback_)
self.area = ScrollArea(self.H, len(self.lines), 0)
self.draw()
except:
logger.critical(traceback.format_exc())
def react(self, c):
try:
if c in (ord('q'), curses.KEY_BACKSPACE, ascii.BS, ascii.ESC,
curses.KEY_LEFT):
return self.screen
elif c == curses.KEY_UP: # up
self.area.move_cursor(0)
self.area.scroll(-1)
elif c == curses.KEY_DOWN: # down
self.area.move_cursor(self.area.numrows - 1)
self.area.scroll(1)
elif c == curses.KEY_PPAGE: # page up
self.area.page_up()
elif c == curses.KEY_NPAGE: # page down
self.area.page_down()
self.draw()
except:
logger.critical(traceback.format_exc())
# Writes
# ======
def draw(self):
# Clear the screen and then draw our rows.
# ========================================
self.win.clear()
self.win.refresh()
for index, rownum in self.area:
self.win.addstr(rownum, 0, self.lines[index])
# Continuation indicators
# =======================
color = self.colors.BLUE
if self.area.start > 0:
c = curses.ACS_UARROW
else:
c = ord(' ')
self.win.addch(0, self.W, c, color)
if self.area.end_ < self.area.numitems:
c = curses.ACS_LANTERN
else:
c = ord(' ')
self.win.addch(self.H - 1, self.W, c, color)
# Commit
# ======
self.win.refresh()
class ErrorScreen(BaseScreen):
"""Display a traceback within curses.
"""
def __init__(self, screen, traceback_):
"""Takes the screen where the error occured and the traceback.
"""
self.screen = screen
self.colors = screen.colors
self.blocks = screen.blocks
self.traceback_ = traceback_
self.win = self.screen.win
self.win.clear()
self.win.refresh()
# BaseScreen contracts
# ====================
ui_chars = ( ord('q')
, curses.KEY_UP
, curses.KEY_DOWN
, curses.KEY_LEFT
, curses.KEY_PPAGE
, curses.KEY_NPAGE
, curses.KEY_BACKSPACE
)
def resize(self):
try:
self.lines = format_tb(self.W-1, self.traceback_)
self.area = ScrollArea(self.H, len(self.lines), 0)
self.draw()
except:
logger.critical(traceback.format_exc())
def react(self, c):
try:
if c in ( ord('q')
, curses.KEY_BACKSPACE
, ascii.BS
, ascii.ESC
, curses.KEY_LEFT
):
return self.screen
elif c == curses.KEY_UP: # up
self.area.move_cursor(0)
self.area.scroll(-1)
elif c == curses.KEY_DOWN: # down
self.area.move_cursor(self.area.numrows-1)
self.area.scroll(1)
elif c == curses.KEY_PPAGE: # page up
self.area.page_up()
elif c == curses.KEY_NPAGE: # page down
self.area.page_down()
self.draw()
except:
logger.critical(traceback.format_exc())
# Writes
# ======
def draw(self):
# Clear the screen and then draw our rows.
# ========================================
self.win.clear()
self.win.refresh()
for index, rownum in self.area:
self.win.addstr(rownum,0,self.lines[index])
# Continuation indicators
# =======================
color = self.colors.BLUE
if self.area.start > 0:
c = curses.ACS_UARROW
else:
c = ord(' ')
self.win.addch(0,self.W,c,color)
if self.area.end_ < self.area.numitems:
c = curses.ACS_LANTERN
else:
c = ord(' ')
self.win.addch(self.H-1,self.W,c,color)
# Commit
# ======
self.win.refresh()
