Lib/lib-stdwin/textwin.py

   1 # Module 'textwin'
   2
   3 # Text windows, a subclass of gwin
   4
   5 import stdwin
   6 import gwin
   7 from stdwinevents import *
   8
   9
  10 def fixsize(w):
  11         docwidth, docheight = w.text.getrect()[1]
  12         winheight = w.getwinsize()[1]
  13         if winheight > docheight: docheight = winheight
  14         w.setdocsize(0, docheight)
  15         fixeditmenu(w)
  16
  17 def cut(w, m, id):
  18         s = w.text.getfocustext()
  19         if s:
  20                 stdwin.setcutbuffer(0, s)
  21                 w.text.replace('')
  22                 fixsize(w)
  23
  24 def copy(w, m, id):
  25         s = w.text.getfocustext()
  26         if s:
  27                 stdwin.setcutbuffer(0, s)
  28                 fixeditmenu(w)
  29
  30 def paste(w, m, id):
  31         w.text.replace(stdwin.getcutbuffer(0))
  32         fixsize(w)
  33
  34 def addeditmenu(w):
  35         m = w.editmenu = w.menucreate('Edit')
  36         m.action = []
  37         m.additem('Cut', 'X')
  38         m.action.append(cut)
  39         m.additem('Copy', 'C')
  40         m.action.append(copy)
  41         m.additem('Paste', 'V')
  42         m.action.append(paste)
  43
  44 def fixeditmenu(w):
  45         m = w.editmenu
  46         f = w.text.getfocus()
  47         can_copy = (f[0] < f[1])
  48         m.enable(1, can_copy)
  49         if not w.readonly:
  50                 m.enable(0, can_copy)
  51                 m.enable(2, (stdwin.getcutbuffer(0) <> ''))
  52
  53 def draw(w, area):                      # Draw method
  54         w.text.draw(area)
  55
  56 def size(w, newsize):                   # Size method
  57         w.text.move((0, 0), newsize)
  58         fixsize(w)
  59
  60 def close(w):                           # Close method
  61         del w.text  # Break circular ref
  62         gwin.close(w)
  63
  64 def char(w, c):                         # Char method
  65         w.text.replace(c)
  66         fixsize(w)
  67
  68 def backspace(w):                       # Backspace method
  69         void = w.text.event(WE_COMMAND, w, WC_BACKSPACE)
  70         fixsize(w)
  71
  72 def arrow(w, detail):                   # Arrow method
  73         w.text.arrow(detail)
  74         fixeditmenu(w)
  75
  76 def mdown(w, detail):                   # Mouse down method
  77         void = w.text.event(WE_MOUSE_DOWN, w, detail)
  78         fixeditmenu(w)
  79
  80 def mmove(w, detail):                   # Mouse move method
  81         void = w.text.event(WE_MOUSE_MOVE, w, detail)
  82
  83 def mup(w, detail):                     # Mouse up method
  84         void = w.text.event(WE_MOUSE_UP, w, detail)
  85         fixeditmenu(w)
  86
  87 def activate(w):                        # Activate method
  88         fixeditmenu(w)
  89
  90 def open(title, str):                   # Display a string in a window
  91         w = gwin.open(title)
  92         w.readonly = 0
  93         w.text = w.textcreate((0, 0), w.getwinsize())
  94         w.text.replace(str)
  95         w.text.setfocus(0, 0)
  96         addeditmenu(w)
  97         fixsize(w)
  98         w.draw = draw
  99         w.size = size
 100         w.close = close
 101         w.mdown = mdown
 102         w.mmove = mmove
 103         w.mup = mup
 104         w.char = char
 105         w.backspace = backspace
 106         w.arrow = arrow
 107         w.activate = activate
 108         return w
 109
 110 def open_readonly(title, str):          # Same with char input disabled
 111         w = open(title, str)
 112         w.readonly = 1
 113         w.char = w.backspace = gwin.nop
 114         # Disable Cut and Paste menu item; leave Copy alone
 115         w.editmenu.enable(0, 0)
 116         w.editmenu.enable(2, 0)
 117         return w