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.AutoCompSetAutoHide(False)
  91         self.AutoCompStops(' .,;:([)]}\'"\\<>%^&+-=*/|`')
  92         # Do we want to automatically pop up command argument help?
  93         self.autoCallTip = True
  94         self.CallTipSetBackground(wx.Colour(255, 255, 232))
  95         self.SetWrapMode(False)
  96         try:
  97             self.SetEndAtLastLine(False)
  98         except AttributeError:
  99             pass
 100
 101     def setStyles(self, faces):
 102         """Configure font size, typeface and color for lexer."""
 103
 104         # Default style
 105         self.StyleSetSpec(stc.STC_STYLE_DEFAULT,
 106                           "face:%(mono)s,size:%(size)d,back:%(backcol)s" % \
 107                           faces)
 108
 109         self.StyleClearAll()
 110
 111         # Built in styles
 112         self.StyleSetSpec(stc.STC_STYLE_LINENUMBER,
 113                           "back:#C0C0C0,face:%(mono)s,size:%(lnsize)d" % faces)
 114         self.StyleSetSpec(stc.STC_STYLE_CONTROLCHAR,
 115                           "face:%(mono)s" % faces)
 116         self.StyleSetSpec(stc.STC_STYLE_BRACELIGHT,
 117                           "fore:#0000FF,back:#FFFF88")
 118         self.StyleSetSpec(stc.STC_STYLE_BRACEBAD,
 119                           "fore:#FF0000,back:#FFFF88")
 120
 121         # Python styles
 122         self.StyleSetSpec(stc.STC_P_DEFAULT,
 123                           "face:%(mono)s" % faces)
 124         self.StyleSetSpec(stc.STC_P_COMMENTLINE,
 125                           "fore:#007F00,face:%(mono)s" % faces)
 126         self.StyleSetSpec(stc.STC_P_NUMBER,
 127                           "")
 128         self.StyleSetSpec(stc.STC_P_STRING,
 129                           "fore:#7F007F,face:%(mono)s" % faces)
 130         self.StyleSetSpec(stc.STC_P_CHARACTER,
 131                           "fore:#7F007F,face:%(mono)s" % faces)
 132         self.StyleSetSpec(stc.STC_P_WORD,
 133                           "fore:#00007F,bold")
 134         self.StyleSetSpec(stc.STC_P_TRIPLE,
 135                           "fore:#7F0000")
 136         self.StyleSetSpec(stc.STC_P_TRIPLEDOUBLE,
 137                           "fore:#000033,back:#FFFFE8")
 138         self.StyleSetSpec(stc.STC_P_CLASSNAME,
 139                           "fore:#0000FF,bold")
 140         self.StyleSetSpec(stc.STC_P_DEFNAME,
 141                           "fore:#007F7F,bold")
 142         self.StyleSetSpec(stc.STC_P_OPERATOR,
 143                           "")
 144         self.StyleSetSpec(stc.STC_P_IDENTIFIER,
 145                           "")
 146         self.StyleSetSpec(stc.STC_P_COMMENTBLOCK,
 147                           "fore:#7F7F7F")
 148         self.StyleSetSpec(stc.STC_P_STRINGEOL,
 149                           "fore:#000000,face:%(mono)s,back:#E0C0E0,eolfilled" % faces)
 150
 151     def OnUpdateUI(self, event):
 152         """Check for matching braces."""
 153         # If the auto-complete window is up let it do its thing.
 154         if self.AutoCompActive() or self.CallTipActive():
 155             return
 156         braceAtCaret = -1
 157         braceOpposite = -1
 158         charBefore = None
 159         caretPos = self.GetCurrentPos()
 160         if caretPos > 0:
 161             charBefore = self.GetCharAt(caretPos - 1)
 162             styleBefore = self.GetStyleAt(caretPos - 1)
 163
 164         # Check before.
 165         if charBefore and chr(charBefore) in '[]{}()' \
 166         and styleBefore == stc.STC_P_OPERATOR:
 167             braceAtCaret = caretPos - 1
 168
 169         # Check after.
 170         if braceAtCaret < 0:
 171             charAfter = self.GetCharAt(caretPos)
 172             styleAfter = self.GetStyleAt(caretPos)
 173             if charAfter and chr(charAfter) in '[]{}()' \
 174             and styleAfter == stc.STC_P_OPERATOR:
 175                 braceAtCaret = caretPos
 176
 177         if braceAtCaret >= 0:
 178             braceOpposite = self.BraceMatch(braceAtCaret)
 179
 180         if braceAtCaret != -1  and braceOpposite == -1:
 181             self.BraceBadLight(braceAtCaret)
 182         else:
 183             self.BraceHighlight(braceAtCaret, braceOpposite)
 184
 185     def CanCopy(self):
 186         """Return True if text is selected and can be copied."""
 187         return self.GetSelectionStart() != self.GetSelectionEnd()
 188
 189     def CanCut(self):
 190         """Return True if text is selected and can be cut."""
 191         return self.CanCopy() and self.CanEdit()
 192
 193     def CanEdit(self):
 194         """Return True if editing should succeed."""
 195         return not self.GetReadOnly()
 196
 197     def CanPaste(self):
 198         """Return True if pasting should succeed."""
 199         return stc.StyledTextCtrl.CanPaste(self) and self.CanEdit()