def show_help( self, wait_for_input ):
self.set_status_line( _("Press any key to continue"), False )
self.textwindow.erase()
line_num = self.win_height - 4
for line in COPYRIGHT_MESSAGES:
newline = line.center( self.win_width )
self.textwindow.addnstr( line_num, 0,
newline, self.win_width, self.CP_NORMAL )
line_num += 1
for line_num, line in enumerate( HELP_MESSAGES ):
if isinstance( line, str ):
newline = line.center( self.win_width )
else:
newline = "%%0%ds - %%s" % ( self.win_width // 2 )
newline = newline % ( line[0], line[1] )
self.textwindow.addnstr( line_num, 0,
newline, self.win_width, self.CP_NORMAL )
self.textwindow.refresh()
if wait_for_input:
self.textwindow.getch()
self.set_status_line( self.DEFAULT_STATUS_MESSAGE, False )
self.draw_screen()
def next_difference( self, direction ):
line, current_pos = self.get_line_of_next_diff( direction )
# If there are no more differences, we have
# nothing to do
if line is None:
this_line_status = self.lines[self.mycursor.line_num].status
if direction > 0:
if this_line_status == difflinetypes.IDENTICAL:
return _("After last difference")
else:
return _("At last difference")
else:
if this_line_status == difflinetypes.IDENTICAL:
return _("Before first difference")
else:
return _("At first difference")
next_line_pos = self.get_line_of_end_of_diff(
direction, line, current_pos )
if direction < 0:
# If we're going backwards, we jump to the
# beginning of this difference
current_pos = next_line_pos
if current_pos <= self.top_line:
scroll = True
else:
scroll = False
else:
if next_line_pos >= ( self.bot_line - 1 ):
scroll = True
else:
scroll = False
if scroll:
self.scroll_to_line( current_pos )
else:
self.move_cursor_and_refresh( current_pos - self.top_line, False )
def __init__( self, diffmodel, filename_left=None, filename_right=None,
filemanager=None ):
self.diffmodel = diffmodel
self.filename_left = filename_left
self.filename_right = filename_right
self.filemanager = filemanager
self.top_line = 0
self.bot_line = None
self.first_col = 0
self.mycursor = NCursesView.Cursor( directions.LEFT, 0 )
self.win_height = None # Modify these in test code
self.win_width = None #
self.DEFAULT_STATUS_MESSAGE = _("Press SHIFT-H for help")
def run( self, debug_actions ):
self.v.set_status_line( _("Editing line. Press ESC to finish."), True )
self.v.mycursor.column_status = cursor_column_state.COLUMN_SINGLE
self.v.refresh_cursor_line()
if debug_actions is None:
self.main_loop()
else:
for action in debug_actions:
if isinstance( action, str ):
action = ord( action )
keep_going = self.process_keypress( action )
if not keep_going:
break
else:
return -1
self.v.mycursor.column_status = cursor_column_state.COLUMN_ALL
self.v.refresh_cursor_line()
self.v.set_status_line( self.v.DEFAULT_STATUS_MESSAGE, False )
def process_keypress( self, key, remaining_dbg_acts=None,
wait_for_input=True ):
status_line = -1
keep_going = True
if key == ord( "q" ): # Quit
keep_going = False
elif key == ord( "h" ) or key == curses.KEY_LEFT:
status_line = self.move_cursor( directions.LEFT, False )
elif key == ord( "l" ) or key == curses.KEY_RIGHT:
status_line = self.move_cursor( directions.RIGHT, False )
elif key == ord( "j" ) or key == curses.KEY_DOWN:
status_line = self.move_cursor( directions.DOWN, False )
elif key == ord( "k" ) or key == curses.KEY_UP:
status_line = self.move_cursor( directions.UP, False )
elif key == ord( "[" ): # Copy lines right to left
status_line = self.copy_lines( directions.LEFT )
elif key == ord( "]" ): # Copy lines left to right
status_line = self.copy_lines( directions.RIGHT )
elif key == ord( "a" ): # Add a line
status_line = self.add_line()
elif key == ord( "d" ): # Delete selected lines
status_line = self.delete_lines()
# Edit mode disabled
#elif key == ord( "e" ): # Edit mode
# status_line = NCursesViewEditMode( self ).run( remaining_dbg_acts )
elif key == ord( "J" ): # Extend selection down
status_line = self.move_cursor( directions.DOWN, True )
elif key == ord( "K" ): # Extend selection up
status_line = self.move_cursor( directions.UP, True )
elif key == ord( "." ) or key == curses.KEY_NPAGE: # Page down
status_line = self.change_page( 1, False )
elif key == ord( "," ) or key == curses.KEY_PPAGE: # Page up
status_line = self.change_page( -1, False )
elif key == ord( ">" ): # Extend selection 1 page down
status_line = self.change_page( 1, True )
elif key == ord( "<" ): # Extend selection 1 page up
status_line = self.change_page( -1, True )
elif key == ord( "n" ) or key == curses.KEY_F8: # Next difference
status_line = self.next_difference( 1 )
elif key == ord( "p" ) or key == curses.KEY_F7: # Previous difference
status_line = self.next_difference( -1 )
elif key == ord( "z" ): # Scroll left
status_line = self.scroll_horizontal( -1 )
elif key == ord( "x" ): # Scroll right
status_line = self.scroll_horizontal( 1 )
elif key == ord( "s" ): # Save
assert( self.filemanager )
status = self.filemanager.save( self.diffmodel, self.mycursor.lr )
if status == save_status.STATUS_SAVED:
self.diffmodel.set_save_point( self.mycursor.lr )
self.set_status_line( _("File saved."), True )
self.draw_header_window()
self.set_top_line( self.top_line )
self.draw_screen()
elif status == save_status.STATUS_NOCHANGES:
self.set_status_line( _("No changes were made in this file."),
True )
elif key == ord( "H" ): # Help
self.show_help( wait_for_input )
# We have already reset the status after showing the help
status_line = -1
if status_line is None:
self.set_status_line( self.DEFAULT_STATUS_MESSAGE, False )
elif status_line == -1:
pass # An unused key was pressed
else:
self.set_status_line( status_line )
return keep_going
import itertools
from lib.misc.constants import cursor_column_state
from lib.misc.constants import difflinetypes
from lib.misc.constants import directions
from lib.misc.constants import save_status
from lib.misc.translation import _
from lib.views.ncursesvieweditmode import NCursesViewEditMode
NEXT_DIFF_MARGIN = 3
HELP_MESSAGES = [
"",
_("Diffident Help"),
"",
( _("Quit"), _("q") ),
( _("Move left/right"), _("h/l or Arrow Keys") ),
( _("Move up/down"), _("k/j or Arrow Keys") ),
( _("Select line up/down"), _("K/J") ),
( _("Next/Previous difference"), _("n/p or F8/F7") ),
( _("Page up/down"), _(",/. or PageUp/Down") ),
( _("Select page up/down"), _("</>") ),
( _("Scroll left/right"), _("z/x") ),
( _("Copy left/right"), _("[/]") ),
( _("Insert line"), _("a") ),
( _("Delete line(s)"), _("d") ),
( _("Save changes"), _("s") ),
]
