wxPython/wx/py/editwindow.py

   1 """EditWindow class."""
   2
   3 __author__ = "Patrick K. O'Brien <pobrien@orbtech.com>"
   4 __cvsid__ = "$Id$"
   5 __revision__ = "$Revision$"[11:-2]
   6
   7 import wx
   8 from wx import stc
   9
  10 import keyword
  11 import os
  12 import sys
  13 import time
  14
  15 import dispatcher
  16 from version import VERSION
  17
  18 try:
  19     True
  20 except NameError:
  21     True = 1==1
  22     False = 1==0
  23
  24 if wx.Platform == '__WXMSW__':
  25     FACES = { 'times'  : 'Times New Roman',
  26               'mono'   : 'Courier New',
  27               'helv'   : 'Lucida Console',
  28               'lucida' : 'Lucida Console',
  29               'other'  : 'Comic Sans MS',
  30               'size'   : 10,
  31               'lnsize' : 9,
  32               'backcol': '#FFFFFF',
  33             }
  34 else:  # GTK
  35     FACES = { 'times'  : 'Times',
  36               'mono'   : 'Courier',
  37               'helv'   : 'Helvetica',
  38               'other'  : 'new century schoolbook',
  39               'size'   : 12,
  40               'lnsize' : 10,
  41               'backcol': '#FFFFFF',
  42             }
  43
  44
  45 class EditWindow(stc.StyledTextCtrl):
  46     """EditWindow based on StyledTextCtrl."""
  47
  48     revision = __revision__
  49
  50     def __init__(self, parent, id=-1, pos=wx.DefaultPosition,
  51                  size=wx.DefaultSize, style=wx.CLIP_CHILDREN | wx.SUNKEN_BORDER):
  52         """Create EditWindow instance."""
  53         stc.StyledTextCtrl.__init__(self, parent, id, pos, size, style)
  54         self.__config()
  55         stc.EVT_STC_UPDATEUI(self, id, self.OnUpdateUI)
  56         dispatcher.connect(receiver=self._fontsizer, signal='FontIncrease')
  57         dispatcher.connect(receiver=self._fontsizer, signal='FontDecrease')
  58         dispatcher.connect(receiver=self._fontsizer, signal='FontDefault')
  59
  60     def _fontsizer(self, signal):
  61         """Receiver for Font* signals."""
  62         size = self.GetZoom()
  63         if signal == 'FontIncrease':
  64             size += 1
  65         elif signal == 'FontDecrease':
  66             size -= 1
  67         elif signal == 'FontDefault':
  68             size = 0
  69         self.SetZoom(size)
  70
  71     def __config(self):
  72         """Configure shell based on user preferences."""
  73         self.SetMarginType(1, stc.STC_MARGIN_NUMBER)
  74         self.SetMarginWidth(1, 40)
  75
  76         self.SetLexer(stc.STC_LEX_PYTHON)
  77         self.SetKeyWords(0, ' '.join(keyword.kwlist))
  78
  79         self.setStyles(FACES)
  80         self.SetViewWhiteSpace(False)
  81         self.SetTabWidth(4)
  82         self.SetUseTabs(False)
  83         # Do we want to automatically pop up command completion options?
  84         self.autoComplete = True
  85         self.autoCompleteIncludeMagic = True
  86         self.autoCompleteIncludeSingle = True
  87         self.autoCompleteIncludeDouble = True
  88         self.autoCompleteCaseInsensitive = True
  89         self.AutoCompSetIgnoreCase(self.autoCompleteCaseInsensitive)
  90         self.autoCompleteAutoHide = True
  91         self.AutoCompSetAutoHide(self.autoCompleteAutoHide)
  92         self.AutoCompStops(' .,;:([)]}\'"\\<>%^&+-=*/|`')
  93         # Do we want to automatically pop up command argument help?
  94         self.autoCallTip = True
  95         self.CallTipSetBackground(wx.Colour(255, 255, 232))
  96         self.SetWrapMode(False)
  97         try:
  98             self.SetEndAtLastLine(False)
  99         except AttributeError:
 100             pass
 101
 102     def setStyles(self, faces):
 103         """Configure font size, typeface and color for lexer."""
 104
 105         # Default style
 106         self.StyleSetSpec(stc.STC_STYLE_DEFAULT,
 107                           "face:%(mono)s,size:%(size)d,back:%(backcol)s" % \
 108                           faces)
 109
 110         self.StyleClearAll()
 111
 112         # Built in styles
 113         self.StyleSetSpec(stc.STC_STYLE_LINENUMBER,
 114                           "back:#C0C0C0,face:%(mono)s,size:%(lnsize)d" % faces)
 115         self.StyleSetSpec(stc.STC_STYLE_CONTROLCHAR,
 116                           "face:%(mono)s" % faces)
 117         self.StyleSetSpec(stc.STC_STYLE_BRACELIGHT,
 118                           "fore:#0000FF,back:#FFFF88")
 119         self.StyleSetSpec(stc.STC_STYLE_BRACEBAD,
 120                           "fore:#FF0000,back:#FFFF88")
 121
 122         # Python styles
 123         self.StyleSetSpec(stc.STC_P_DEFAULT,
 124                           "face:%(mono)s" % faces)
 125         self.StyleSetSpec(stc.STC_P_COMMENTLINE,
 126                           "fore:#007F00,face:%(mono)s" % faces)
 127         self.StyleSetSpec(stc.STC_P_NUMBER,
 128                           "")
 129         self.StyleSetSpec(stc.STC_P_STRING,
 130                           "fore:#7F007F,face:%(mono)s" % faces)
 131         self.StyleSetSpec(stc.STC_P_CHARACTER,
 132                           "fore:#7F007F,face:%(mono)s" % faces)
 133         self.StyleSetSpec(stc.STC_P_WORD,
 134                           "fore:#00007F,bold")
 135         self.StyleSetSpec(stc.STC_P_TRIPLE,
 136                           "fore:#7F0000")
 137         self.StyleSetSpec(stc.STC_P_TRIPLEDOUBLE,
 138                           "fore:#000033,back:#FFFFE8")
 139         self.StyleSetSpec(stc.STC_P_CLASSNAME,
 140                           "fore:#0000FF,bold")
 141         self.StyleSetSpec(stc.STC_P_DEFNAME,
 142                           "fore:#007F7F,bold")
 143         self.StyleSetSpec(stc.STC_P_OPERATOR,
 144                           "")
 145         self.StyleSetSpec(stc.STC_P_IDENTIFIER,
 146                           "")
 147         self.StyleSetSpec(stc.STC_P_COMMENTBLOCK,
 148                           "fore:#7F7F7F")
 149         self.StyleSetSpec(stc.STC_P_STRINGEOL,
 150                           "fore:#000000,face:%(mono)s,back:#E0C0E0,eolfilled" % faces)
 151
 152     def OnUpdateUI(self, event):
 153         """Check for matching braces."""
 154         # If the auto-complete window is up let it do its thing.
 155         if self.AutoCompActive() or self.CallTipActive():
 156             return
 157         braceAtCaret = -1
 158         braceOpposite = -1
 159         charBefore = None
 160         caretPos = self.GetCurrentPos()
 161         if caretPos > 0:
 162             charBefore = self.GetCharAt(caretPos - 1)
 163             styleBefore = self.GetStyleAt(caretPos - 1)
 164
 165         # Check before.
 166         if charBefore and chr(charBefore) in '[]{}()' \
 167         and styleBefore == stc.STC_P_OPERATOR:
 168             braceAtCaret = caretPos - 1
 169
 170         # Check after.
 171         if braceAtCaret < 0:
 172             charAfter = self.GetCharAt(caretPos)
 173             styleAfter = self.GetStyleAt(caretPos)
 174             if charAfter and chr(charAfter) in '[]{}()' \
 175             and styleAfter == stc.STC_P_OPERATOR:
 176                 braceAtCaret = caretPos
 177
 178         if braceAtCaret >= 0:
 179             braceOpposite = self.BraceMatch(braceAtCaret)
 180
 181         if braceAtCaret != -1  and braceOpposite == -1:
 182             self.BraceBadLight(braceAtCaret)
 183         else:
 184             self.BraceHighlight(braceAtCaret, braceOpposite)
 185
 186     def CanCopy(self):
 187         """Return True if text is selected and can be copied."""
 188         return self.GetSelectionStart() != self.GetSelectionEnd()
 189
 190     def CanCut(self):
 191         """Return True if text is selected and can be cut."""
 192         return self.CanCopy() and self.CanEdit()
 193
 194     def CanEdit(self):
 195         """Return True if editing should succeed."""
 196         return not self.GetReadOnly()
 197
 198     def CanPaste(self):
 199         """Return True if pasting should succeed."""
 200         return stc.StyledTextCtrl.CanPaste(self) and self.CanEdit()