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