def display_help(self):
'''Display the single file help screen'''
# customize header
help_header = "%s: %s"
logging.debug("self.screen is =%s", self.screen)
if self.screen in self.help_dict:
help_header = help_header % (_("Help"),
self.help_dict[self.screen][1])
help_text = self.get_help_text(self.help_dict[self.screen][0])
else:
help_header = help_header % (_("Help"), _("Not Available"))
help_text = _("Help for this screen is not available")
self.main_win.set_header_text(help_header)
help_text = convert_paragraph(help_text, self.win_size_x - 5)
logging.debug("help_text #lines=%d, text is \n%s", len(help_text),
help_text)
area = WindowArea(x_loc=0,
y_loc=1,
scrollable_lines=(len(help_text) + 1))
area.lines = self.win_size_y - 1
area.columns = self.win_size_x
self.scroll_region = ScrollWindow(area, window=self.center_win)
self.scroll_region.add_paragraph(help_text, start_x=(area.x_loc + 3))
self.center_win.activate_object(self.scroll_region)
def get_log_data(self):
'''Attempt to read in the install log file. If an error occurs,
the log_data is set to a string explaining the cause, if possible.
'''
if self.log_data is None:
log_file = None
try:
try:
log_file = open(self.install_profile.log_location)
log_data = log_file.read()
except (OSError, IOError), error:
self.log_data = _("Could not read log file:\n\t%s") % \
error.strerror
finally:
if log_file is not None:
log_file.close()
max_chars = self.win_size_x - 4
self.log_data = convert_paragraph(log_data, max_chars)
return self.log_data
def add_paragraph(self,
text,
start_y=0,
start_x=0,
max_y=None,
max_x=None):
'''Add a block of text to the window
Add a paragraph to the screen. If a string is passed in, it is
converted using convert_paragraph. If a list of strings is passed in,
each string will fit in the space alloted (long lines will be
truncated). Any lines that would be printed past max_y will not be
printed.
The number of lines used is returned.
'''
logging.log(
LOG_LEVEL_INPUT, "add_paragraph: start_y=%d, start_x=%d, "
"max_y=%s, max_x=%s", start_y, start_x, max_y, max_x)
win_size_y, win_size_x = self.window.getmaxyx()
start_y += self.border_size[0]
if max_y is None:
max_y = win_size_y - start_y - self.border_size[0]
if max_x is None:
max_x = win_size_x
max_chars = max_x - start_x - self.border_size[1] * 2
y_index = start_y
if isinstance(text, basestring):
text = convert_paragraph(text, max_chars)
for line in text:
logging.log(LOG_LEVEL_INPUT, "add_paragraph:add_text: y_index=%d, "
"line=%s\n", y_index, line)
self.add_text(line, y_index, start_x, max_chars)
y_index += 1
if y_index > max_y + start_y:
logging.warn(
"Could not fit all text in space for the "
"paragraph. Last line:\n%s", line)
break
return y_index - start_y
def _show(self):
'''Prepare a text summary from the install_profile and display it
to the user in a ScrollWindow
'''
y_loc = 1
y_loc += self.center_win.add_paragraph(SummaryScreen.PARAGRAPH, y_loc)
y_loc += 1
summary_text = self.build_summary()
# Wrap the summary text, accounting for the INDENT (used below in
# the call to add_paragraph)
max_chars = self.win_size_x - SummaryScreen.INDENT - 1
summary_text = convert_paragraph(summary_text, max_chars)
area = WindowArea(x_loc=0, y_loc=y_loc,
scrollable_lines=(len(summary_text)+1))
area.lines = self.win_size_y - y_loc
area.columns = self.win_size_x
scroll_region = ScrollWindow(area, window=self.center_win)
scroll_region.add_paragraph(summary_text, start_x=SummaryScreen.INDENT)
self.center_win.activate_object(scroll_region)
def test_convert_paragraph(self):
''' test convert_paragraph() '''
c0 = '\u3042' # 2 columns
c1 = '\u3044' # 2 columns
c2 = ' ' # 1 column (white space)
c3 = '\u3046' # 2 columns
c4 = '\u3048' # 2 columns
s = c0 + c1 + c2 + c3 + c4
if if_wrap_on_whitespace():
self.assertEqual(convert_paragraph(s, 10), [s])
self.assertEqual(convert_paragraph(s, 9), [s])
self.assertEqual(convert_paragraph(s, 8), [s[:3], s[3:].lstrip()])
self.assertEqual(convert_paragraph(s, 7), [s[:3], s[3:].lstrip()])
self.assertEqual(convert_paragraph(s, 6), [s[:3], s[3:].lstrip()])
self.assertEqual(convert_paragraph(s, 5), [s[:3], s[3:].lstrip()])
self.assertEqual(convert_paragraph(s, 4), [s[:2], s[2:].lstrip()])
else:
self.assertEqual(convert_paragraph(s, 10), [s])
self.assertEqual(convert_paragraph(s, 9), [s])
self.assertEqual(convert_paragraph(s, 8), [s[:4], s[4:].lstrip()])
self.assertEqual(convert_paragraph(s, 7), [s[:4], s[4:].lstrip()])
self.assertEqual(convert_paragraph(s, 6), [s[:3], s[3:].lstrip()])
self.assertEqual(convert_paragraph(s, 5), [s[:3], s[3:].lstrip()])
self.assertEqual(convert_paragraph(s, 4), [s[:2], s[2:].lstrip()])