mirror of https://github.com/python/cpython
Sync to ESR's current version
This commit is contained in:
Andrew M. Kuchling
parent
8f790fe459
commit
e8d7dbfe42
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@ -15,7 +15,7 @@ def rectangle(win, uly, ulx, lry, lrx):
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win.addch(lry, lrx, curses.ACS_LRCORNER)
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win.addch(lry, ulx, curses.ACS_LLCORNER)
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class textbox:
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class Textbox:
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"""Editing widget using the interior of a window object.
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Supports the following Emacs-like key bindings:
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@ -25,6 +25,7 @@ class textbox:
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Ctrl-E Go to right edge (nospaces off) or end of line (nospaces on).
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Ctrl-F Cursor right, wrapping to next line when appropriate.
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Ctrl-G Terminate, returning the window contents.
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Ctrl-H Delete character backward.
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Ctrl-J Terminate if the window is 1 line, otherwise insert newline.
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Ctrl-K If line is blank, delete it, otherwise clear to end of line.
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Ctrl-L Refresh screen
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@ -36,6 +37,7 @@ class textbox:
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is not possible. The following synonyms are supported where possible:
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KEY_LEFT = Ctrl-B, KEY_RIGHT = Ctrl-F, KEY_UP = Ctrl-P, KEY_DOWN = Ctrl-N
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KEY_BACKSPACE = Ctrl-h
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"""
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def __init__(self, win):
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self.win = win
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@ -43,26 +45,25 @@ class textbox:
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self.maxy = self.maxy - 1
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self.maxx = self.maxx - 1
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self.stripspaces = 1
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self.lastcmd = None
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win.keypad(1)
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def firstblank(self, y):
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"Go to the location of the first blank on the given line."
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(oldy, oldx) = self.win.getyx()
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self.win.move(y, self.maxx-1)
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last = self.maxx-1
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last = self.maxx
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while 1:
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if last == 0:
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break
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if ascii.ascii(self.win.inch(y, last)) != ascii.SP:
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last = last + 1
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break
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elif last == 0:
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break
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last = last - 1
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self.win.move(oldy, oldx)
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return last
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def do_command(self, ch):
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"Process a single editing command."
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(y, x) = self.win.getyx()
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self.lastcmd = ch
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if ascii.isprint(ch):
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if y < self.maxy or x < self.maxx:
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# The try-catch ignores the error we trigger from some curses
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@ -72,9 +73,9 @@ class textbox:
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self.win.addch(ch)
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except ERR:
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pass
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elif ch == ascii.SOH: # Ctrl-a
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elif ch == ascii.SOH: # ^a
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self.win.move(y, 0)
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elif ch in (ascii.STX, curses.KEY_LEFT): # Ctrl-b
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elif ch in (ascii.STX,curses.KEY_LEFT, ascii.BS,curses.KEY_BACKSPACE):
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if x > 0:
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self.win.move(y, x-1)
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elif y == 0:
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@ -83,43 +84,44 @@ class textbox:
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self.win.move(y-1, self.firstblank(y-1))
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else:
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self.win.move(y-1, self.maxx)
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elif ch == ascii.EOT: # Ctrl-d
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if ch in (ascii.BS, curses.KEY_BACKSPACE):
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self.win.delch()
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elif ch == ascii.ENQ: # Ctrl-e
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elif ch == ascii.EOT: # ^d
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self.win.delch()
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elif ch == ascii.ENQ: # ^e
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if self.stripspaces:
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self.win.move(y, self.firstblank(y, maxx))
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else:
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self.win.move(y, self.maxx)
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elif ch in (ascii.ACK, curses.KEY_RIGHT): # Ctrl-f
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elif ch in (ascii.ACK, curses.KEY_RIGHT): # ^f
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if x < self.maxx:
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self.win.move(y, x+1)
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elif y == self.maxx:
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elif y == self.maxy:
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pass
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else:
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self.win.move(y+1, 0)
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elif ch == ascii.BEL: # Ctrl-g
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elif ch == ascii.BEL: # ^g
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return 0
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elif ch == ascii.NL: # Ctrl-j
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elif ch == ascii.NL: # ^j
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if self.maxy == 0:
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return 0
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elif y < self.maxy:
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self.win.move(y+1, 0)
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elif ch == ascii.VT: # Ctrl-k
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elif ch == ascii.VT: # ^k
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if x == 0 and self.firstblank(y) == 0:
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self.win.deleteln()
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else:
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self.win.clrtoeol()
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elif ch == ascii.FF: # Ctrl-l
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elif ch == ascii.FF: # ^l
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self.win.refresh()
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elif ch in (ascii.SO, curses.KEY_DOWN): # Ctrl-n
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elif ch in (ascii.SO, curses.KEY_DOWN): # ^n
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if y < self.maxy:
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self.win.move(y+1, x)
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elif ch == ascii.SI: # Ctrl-o
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elif ch == ascii.SI: # ^o
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self.win.insertln()
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elif ch in (ascii.DLE, curses.KEY_UP): # Ctrl-p
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elif ch in (ascii.DLE, curses.KEY_UP): # ^p
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if y > 0:
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self.win.move(y-1, x)
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self.win.refresh()
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return 1
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def gather(self):
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@ -128,6 +130,7 @@ class textbox:
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for y in range(self.maxy+1):
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self.win.move(y, 0)
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stop = self.firstblank(y)
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#sys.stderr.write("y=%d, firstblank(y)=%d\n" % (y, stop))
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if stop == 0 and self.stripspaces:
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continue
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for x in range(self.maxx+1):
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@ -144,8 +147,11 @@ class textbox:
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ch = self.win.getch()
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if validate:
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ch = validate(ch)
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if not ch:
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continue
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if not self.do_command(ch):
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break
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self.win.refresh()
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return self.gather()
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if __name__ == '__main__':
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@ -153,7 +159,7 @@ if __name__ == '__main__':
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win = curses.newwin(4, 9, 15, 20)
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rectangle(stdscr, 14, 19, 19, 29)
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stdscr.refresh()
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return textbox(win).edit()
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return Textbox(win).edit()
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str = curses.wrapper(test_editbox)
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print str
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